Initial commit

.gitignore

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+## Generic ignorable patterns and files
+*~
+.*.swp
+*bak*
+tags
+*.vim

CMakeLists.txt

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+cmake_minimum_required(VERSION 2.6)
+project(samviewer)
+
+set(CMAKE_CXX_STANDARD 11)
+
+set(PROJECT_NAME_CAPITALIZED "SAM-Viewer")
+set(PROJECT_LINK_URL "https://github.com/stujones11/SAM-Viewer")
+set(PROJECT_LINK_TEXT "github.com/stujones11/SAM-Viewer")
+
+set(VERSION_MAJOR 0)
+set(VERSION_MINOR 1)
+set(VERSION_PATCH 0)
+set(VERSION_STRING "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
+
+add_definitions(-DUSE_CMAKE_CONFIG_H)
+
+configure_file (
+	"${PROJECT_SOURCE_DIR}/src/cmake_config.h.in"
+	"${PROJECT_SOURCE_DIR}/src/cmake_config.h"
+)
+
+if(NOT IRRLICHT_INCLUDE_DIR)
+	set(IRRLICHT_INCLUDE_DIR "/usr/include/irrlicht")
+endif()
+
+if(NOT IRRLICHT_LIBRARY)
+	set(IRRLICHT_LIBRARY "/usr/local/lib/libIrrlicht.so")
+endif()
+
+include_directories(
+   ${IRRLICHT_INCLUDE_DIR}
+   ${PROJECT_SOURCE_DIR}/src
+)
+file(GLOB SRCS src/*.cpp)
+file(MAKE_DIRECTORY "bin")
+
+set(EXECUTABLE_OUTPUT_PATH "${CMAKE_SOURCE_DIR}/bin")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3")
+
+add_executable(${PROJECT_NAME} ${SRCS})
+target_link_libraries(${PROJECT_NAME} ${IRRLICHT_LIBRARY})
+

LICENSE

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+MIT License
+
+Copyright (c) 2018 
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

LICENSE.txt

@@ -0,0 +1,57 @@
+SAM-Viewer
+==========
+
+License of SAM-Viewer source code
+---------------------------------
+
+Copyright (C) 2018, Stuart Jones - (MIT License)
+
+License of SAM-Viewer media
+---------------------------
+
+Includes all textures and models contained in this distribution.
+
+Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
+
+Minetest media files:
+
+ character.b3d
+ character.png
+ pickaxe.png
+ blank.png
+
+Copyright (C) 2010-2018 celeron55, Perttu Ahola
+
+Irrlicht media files:
+
+ fontlucida.png
+
+All other media files:
+
+Copyright (C) 2018, Stuart Jones - (CC BY-SA 3.0)
+
+Irrlicht
+--------
+
+This program uses the Irrlicht Engine. http://irrlicht.sourceforge.net/
+
+The Irrlicht Engine License:
+
+  Copyright (C) 2002-2015 Nikolaus Gebhardt
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgement in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be clearly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+

README.md

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+SAM-Viewer
+==========
+
+**Skin & Model Viewer - Version 0.1.0**
+
+A simple 3d mesh viewer built with Irrlicht rendering engine.
+
+Features
+--------
+
+* Wielded item or 'attachment' model support.
+* Multiple textures, up to 6 material layers.
+* Mesh debug view. (wire-frame, skeleton and normals)
+* Animation playback amd frame controls.
+
+Supported Formats
+-----------------
+
+Compatible with all mesh formats supported by Irrlicht engine.
+
+* B3D files (.b3d)
+* DirectX (.x)
+* Alias Wavefront Maya (.obj)
+* 3D Studio meshes (.3ds)
+* Lightwave Objects (.lwo)
+* COLLADA 1.4 (.xml, .dae)
+
+Installation
+------------
+
+For now this assumes you are using some sane linux distro and have
+a c++11 compliant compiler, although I am pretty sure it could be
+made to work on any platform or device that meets the requirements.
+
+**Requirements:** cmake, opengl, Irrlicht
+```
+cmake .
+make -j2
+```
+
+**CMake options:** (defaults)
+```
+IRRLICHT_INCLUDE_DIR=/usr/include/irrlicht
+IRRLICHT_LIBRARY="/usr/local/lib/libIrrlicht.so"
+```
+
+**Example:**
+```
+cmake . -DIRRLICHT_LIBRARY="/usr/lib/libIrrlicht.so"`
+```
+
+Controls
+--------
+
+| Control                       | Action                                                         |
+|-------------------------------|----------------------------------------------------------------|
+| Left mouse button + move      | Trackball style rotation                                       |
+| Mouse wheel                   | Zoom                                                           |
+| +                             | Zoom in                                                        |
+| -                             | Zoom out                                                       |
+| Arrow keys                    | Rotate around X and Y axes in 15 degree steps                  |
+| Z, X                          | Rotate around Z axis in 15 degree steps                        |
+| Home                          | Reset zoom and rotation                                        |
+| F5                            | Reload textures                                                |
+| Space                         | Jump (experimental)                                            |
+
+To Do
+-----
+
+* Improve file-browser.
+* Basic lighting.
+* Image capture tools.
+
+Screenshot
+----------
+
+![Imgur](https://i.imgur.com/xIS7pRj.png)
+

assets/sam_icon.svg

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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg61"
+   width="682.66669"
+   height="682.66669"
+   viewBox="0 0 682.66669 682.66669"
+   sodipodi:docname="sam_head.svg"
+   inkscape:version="0.92.1 r15371">
+  <metadata
+     id="metadata67">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs65" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1023"
+     id="namedview63"
+     showgrid="false"
+     inkscape:zoom="0.86696537"
+     inkscape:cx="341.33334"
+     inkscape:cy="177.24884"
+     inkscape:window-x="0"
+     inkscape:window-y="34"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg61" />
+  <image
+     width="682.66669"
+     height="682.66669"
+     preserveAspectRatio="none"
+     style="image-rendering:optimizeQuality"
+     xlink:href="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAgAAAAIACAYAAAD0eNT6AAAABmJLR0QA/wD/AP+gvaeTAAAACXBI
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+f 24/312/3 54/311/3 187/448/3 176/449/3

src/cmake_config.h.in

@@ -0,0 +1,5 @@
+// Template for cmake_config.h
+
+#define D_ABOUT_LINK_URL "@PROJECT_LINK_URL@"
+#define D_ABOUT_LINK_TEXT "@PROJECT_LINK_TEXT@"
+#define D_VERSION "@VERSION_STRING@"

src/config.cpp

@@ -0,0 +1,82 @@
+#include <fstream>
+#include <stdlib.h>
+
+#include "config.h"
+
+Vector::Vector(const std::string &str)
+{
+	sscanf(str.c_str(), "%f,%f,%f", &x, &y, &z);
+}
+
+bool Config::load()
+{
+	std::ifstream file(filename.c_str());
+	if (!file)
+		return false;
+
+	std::string line;
+	while (std::getline(file, line))
+	{
+		auto index = line.find("=");
+		std::string key = line.substr(0, index);
+		std::string value = line.substr(index + 1);
+		config[key] = value;
+	}
+	file.close();
+	return true;
+}
+
+bool Config::save()
+{
+	std::ofstream file(filename.c_str());
+	if (!file)
+		return false;
+
+	for(std::map<std::string, std::string>::iterator it = config.begin();
+		it != config.end(); it++)
+	{
+		file << it->first << "=" << it->second << "\n";
+	}
+	file.close();
+	return true;
+}
+
+bool Config::hasKey(const std::string &key) const
+{
+	return config.find(key) != config.end();
+}
+
+void Config::set(const std::string &key, const std::string &value)
+{
+	config[key] = value;
+}
+
+const std::string &Config::get(const std::string &key) const
+{
+	return config.find(key)->second;
+}
+
+const char *Config::getCStr(const std::string &key) const
+{
+	return get(key).c_str();
+}
+
+int Config::getInt(const std::string &key) const
+{
+	return atoi(getCStr(key));
+}
+
+int Config::getHex(const std::string &key) const
+{
+	return std::stoul(get(key), nullptr, 16);
+}
+
+bool Config::getBool(const std::string &key) const
+{	
+	return get(key) == "true";
+}
+
+Vector Config::getVector(const std::string &key) const
+{
+	return Vector(get(key));
+}

src/config.h

@@ -0,0 +1,37 @@
+#ifndef D_CONFIG_H
+#define D_CONFIG_H
+
+#include <map>
+
+class Vector
+{
+public:
+	Vector() : x(0), y(0), z(0) {}
+	Vector(float x, float y, float z) : x(x), y(y), z(z) {}
+	Vector(const std::string &str);
+	float x;
+	float y;
+	float z;
+};
+
+class Config
+{
+public:
+	Config(const std::string &filename) : filename(filename) {}
+	bool load();
+	bool save();
+	bool hasKey(const std::string &key) const;
+	void set(const std::string &key, const std::string &value);
+	const std::string &get(const std::string &key) const;
+	const char *getCStr(const std::string &key) const;
+	int getInt(const std::string &key) const;
+	int getHex(const std::string &key) const;
+	bool getBool(const std::string &key) const;
+	Vector getVector(const std::string &key) const;
+
+private:
+	std::map<std::string, std::string> config;
+	std::string filename;
+};
+
+#endif // D_CONFIG_H

src/dialog.cpp

@@ -0,0 +1,492 @@
+#include <stdlib.h>
+#include <iostream>
+#include <irrlicht.h>
+
+#ifdef USE_CMAKE_CONFIG_H
+#include "cmake_config.h"
+#else
+#define D_ABOUT_LINK_URL "https://github.com/stujones11/SAM-Viewer"
+#define D_ABOUT_LINK_TEXT "github.com/stujones11/SAM-Viewer"
+#define D_VERSION "0.0.0"
+#endif
+
+#include "config.h"
+#include "scene.h"
+#include "dialog.h"
+
+static inline void open_url(std::string url)
+{
+	system((std::string("xdg-open \"") + url + std::string("\"")).c_str());
+}
+
+HyperlinkCtrl::HyperlinkCtrl(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+	const rect<s32> &rectangle, const wchar_t *title, std::string url) :
+	IGUIElement(EGUIET_ELEMENT, env, parent, id, rectangle),
+	url(url),
+	is_active(false)
+{
+	IGUIStaticText *text = env->addStaticText(title,
+		rect<s32>(0,0,rectangle.getWidth(),20), false, false, this);
+	text->setOverrideColor(SColor(255,0,0,255));
+	text->setTextAlignment(EGUIA_CENTER, EGUIA_CENTER);
+}
+
+void HyperlinkCtrl::draw()
+{
+	if (is_active)
+	{
+		IVideoDriver *driver = Environment->getVideoDriver();
+		rect<s32> pos = getAbsolutePosition();
+		vector2di end = pos.LowerRightCorner;
+		vector2di start = end - vector2di(pos.getWidth(), 0);
+		driver->draw2DLine(start, end, SColor(255,0,0,255));
+	}
+	IGUIElement::draw();
+}
+
+bool HyperlinkCtrl::OnEvent(const SEvent &event)
+{
+	if (event.EventType == EET_GUI_EVENT)
+	{
+		if (event.GUIEvent.EventType == EGET_ELEMENT_HOVERED)
+			is_active = true;
+		else if (event.GUIEvent.EventType == EGET_ELEMENT_LEFT)
+			is_active = false;
+	}
+	else if (is_active && event.EventType == EET_MOUSE_INPUT_EVENT &&
+		event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN)
+	{
+		open_url(url);
+	}
+	return IGUIElement::OnEvent(event);
+}
+
+static inline bool isValidHexString(std::string hex)
+{
+	return (hex.length() == 6 &&
+		hex.find_first_not_of("0123456789abcdefABCDEF") == std::string::npos);
+}
+
+ColorCtrl::ColorCtrl(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+	const rect<s32> &rectangle, const wchar_t *label) :
+	IGUIElement(EGUIET_ELEMENT, env, parent, id, rectangle)
+{
+	IVideoDriver *driver = env->getVideoDriver();
+	IGUIStaticText *text = env->addStaticText(label, rect<s32>(0,0,160,20),
+		false, false, this);
+	IGUIEditBox *edit = env->addEditBox(L"", rect<s32>(180,0,250,20), true,
+		this, E_DIALOG_ID_COLOR_EDIT);
+	edit->setMax(6);
+	edit->setToolTipText(L"Hex color string RRGGBB");
+
+	ITexture *texture = driver->findTexture("color_preview");
+	if (!texture)
+	{
+		IImage *image = driver->createImage(ECF_A8R8G8B8, dimension2du(30,20));
+		image->fill(SColor(255,255,255,255));
+		texture = driver->addTexture("color_preview", image);
+		image->drop();
+	}
+	IGUIImage *preview = env->addImage(rect<s32>(270,0,300,20), this,
+		E_DIALOG_ID_COLOR_PREVIEW);
+	preview->setImage(texture);
+}
+
+void ColorCtrl::setColor(const std::string &hex)
+{
+	if (!isValidHexString(hex))
+		return;
+
+	stringw text = hex.c_str();
+	IGUIEditBox *edit = (IGUIEditBox*)
+		getElementFromId(E_DIALOG_ID_COLOR_EDIT);
+	if (edit)
+		edit->setText(text.c_str());
+	IGUIImage *preview = (IGUIImage*)
+		getElementFromId(E_DIALOG_ID_COLOR_PREVIEW);
+	if (preview)
+	{
+		SColor color;
+		color.color = std::stoul(hex, nullptr, 16);
+		color.setAlpha(255);
+		preview->setColor(color);
+	}
+}
+
+std::string ColorCtrl::getColor() const
+{
+	std::string hex = "";
+	IGUIEditBox *edit = (IGUIEditBox*)
+		getElementFromId(E_DIALOG_ID_COLOR_EDIT);
+	if (edit)
+		hex = stringc(edit->getText()).c_str();
+	return hex;
+}
+
+bool ColorCtrl::OnEvent(const SEvent &event)
+{
+	if (event.EventType == EET_GUI_EVENT &&
+		event.GUIEvent.EventType == EGET_EDITBOX_CHANGED &&
+		event.GUIEvent.Caller->getID() == E_DIALOG_ID_COLOR_EDIT)
+	{
+		IGUIEditBox *edit = (IGUIEditBox*)event.GUIEvent.Caller;
+		std::string hex = stringc(edit->getText()).c_str();
+		setColor(hex);
+	}
+	return IGUIElement::OnEvent(event);
+}
+
+AboutDialog::AboutDialog(IGUIEnvironment *env, IGUIElement *parent,
+	s32 id, const rect<s32> &rectangle) :
+	IGUIElement(EGUIET_ELEMENT, env, parent, id, rectangle)
+{
+	IVideoDriver *driver = env->getVideoDriver();
+	ITexture *icon = driver->findTexture("sam_icon_128.png");
+	if (!icon)
+		icon = driver->getTexture("sam_icon_128.png");
+	if (icon)
+	{
+		IGUIImage *image = env->addImage(rect<s32>(86,10,214,138), this);
+		image->setImage(icon);
+
+	}
+	ITexture *title = driver->findTexture("title.png");
+	if (!title)
+		title = driver->getTexture("title.png");
+	if (title)
+	{
+		IGUIImage *image = env->addImage(rect<s32>(50,140,250,170), this);
+		image->setImage(title);
+	}
+	stringw desc = stringw("Skin & Model Viewer - Version ") + D_VERSION;
+	IGUIStaticText *text;
+	text = env->addStaticText(desc.c_str(), rect<s32>(20,175,280,195),
+		false, false, this);
+	text->setTextAlignment(EGUIA_CENTER, EGUIA_CENTER);
+
+	HyperlinkCtrl *link = new HyperlinkCtrl(env, this,
+		E_DIALOG_ID_ABOUT_LINK, rect<s32>(32,200,268,216),
+		stringw(D_ABOUT_LINK_TEXT).c_str(), D_ABOUT_LINK_URL);
+	link->drop();
+
+	IGUIButton *button = env->addButton(rect<s32>(110,235,190,265), this,
+		E_DIALOG_ID_ABOUT_OK, L"OK");
+}
+
+
+SettingsDialog::SettingsDialog(IGUIEnvironment *env, IGUIElement *parent,
+	s32 id, const rect<s32> &rectangle, Config *conf) :
+	IGUIElement(EGUIET_ELEMENT, env, parent, id, rectangle),
+	conf(conf)
+{
+	IGUITabControl *tabs = env->addTabControl(rect<s32>(2,2,398,250),
+		this, true, true);
+
+	IGUITab *tab_general = tabs->addTab(L"General");
+	IGUITab *tab_debug = tabs->addTab(L"Debug");
+	IGUIStaticText *text;
+	IGUIEditBox *edit;
+	IGUISpinBox *spin;
+	IGUICheckBox *check;
+	IGUIButton *button;
+	ColorCtrl *color;
+
+	color = new ColorCtrl(env, tab_general, E_DIALOG_ID_BG_COLOR,
+		rect<s32>(20,20,320,40), L"Background Color:");
+	color->setColor(conf->get("bg_color"));
+	color->drop();
+
+	color = new ColorCtrl(env, tab_general, E_DIALOG_ID_GRID_COLOR,
+		rect<s32>(20,50,320,70), L"Grid Color:");
+	color->setColor(conf->get("grid_color"));
+	color->drop();
+
+	text = env->addStaticText(L"Wield Attachment Bone:", rect<s32>(20,80,180,100),
+		false, false, tab_general, -1);
+	stringw bone_name = conf->getCStr("wield_bone");
+	edit = env->addEditBox(bone_name.c_str(), rect<s32>(200,80,320,100),
+		true, tab_general, E_DIALOG_ID_WIELD_BONE);
+
+	text = env->addStaticText(L"Default Screen Width:",
+		rect<s32>(20,110,180,130), false, false, tab_general, -1);
+	spin = env->addSpinBox(L"", rect<s32>(200,110,270,130),
+		true, tab_general, E_DIALOG_ID_SCREEN_WIDTH);
+	spin->setValue(conf->getInt("screen_width"));
+	spin->setDecimalPlaces(0);
+
+	text = env->addStaticText(L"Default Screen Height:",
+		rect<s32>(20,140,180,160), false, false, tab_general, -1);
+	spin = env->addSpinBox(L"", rect<s32>(200,140,270,160),
+		true, tab_general, E_DIALOG_ID_SCREEN_HEIGHT);
+	spin->setValue(conf->getInt("screen_height"));
+	spin->setDecimalPlaces(0);
+
+	check = env->addCheckBox(false, rect<s32>(20,20,380,40), tab_debug,
+		E_DIALOG_ID_DEBUG_BBOX, L"Show bounding boxes");
+	check->setChecked(conf->getInt("debug_flags") & EDS_BBOX);
+	check = env->addCheckBox(false, rect<s32>(20,50,380,70), tab_debug,
+		E_DIALOG_ID_DEBUG_NORMALS, L"Show vertex normals");
+	check->setChecked(conf->getInt("debug_flags") & EDS_NORMALS);
+	check = env->addCheckBox(false, rect<s32>(20,80,380,100), tab_debug,
+		E_DIALOG_ID_DEBUG_SKELETON, L"Show skeleton");
+	check->setChecked(conf->getInt("debug_flags") & EDS_SKELETON);
+	check = env->addCheckBox(false, rect<s32>(20,110,380,130), tab_debug,
+		E_DIALOG_ID_DEBUG_WIREFRANE, L"Wireframe overaly");
+	check->setChecked(conf->getInt("debug_flags") & EDS_MESH_WIRE_OVERLAY);
+	check = env->addCheckBox(false, rect<s32>(20,140,380,160), tab_debug,
+		E_DIALOG_ID_DEBUG_ALPHA, L"Use transparent material");
+	check->setChecked(conf->getInt("debug_flags") & EDS_HALF_TRANSPARENCY);
+	check = env->addCheckBox(false, rect<s32>(20,170,380,190),	tab_debug,
+		E_DIALOG_ID_DEBUG_BUFFERS, L"Show all mesh buffers");
+	check->setChecked(conf->getInt("debug_flags") & EDS_BBOX_BUFFERS);
+
+	button = env->addButton(rect<s32>(315,255,395,285), this,
+		E_DIALOG_ID_SETTINGS_OK, L"OK");
+	button = env->addButton(rect<s32>(230,255,310,285), this,
+		E_DIALOG_ID_SETTINGS_CANCEL, L"Cancel");
+}
+
+bool SettingsDialog::isBoxChecked(s32 id) const
+{
+	IGUICheckBox *check = (IGUICheckBox*)getElementFromId(id, true);
+	if (check)
+		return check->isChecked();
+
+	return false;
+}
+
+bool SettingsDialog::OnEvent(const SEvent &event)
+{
+	if (event.EventType == EET_GUI_EVENT &&
+		event.GUIEvent.EventType == EGET_BUTTON_CLICKED &&
+		event.GUIEvent.Caller->getID() == E_DIALOG_ID_SETTINGS_OK)
+	{
+		IGUIEditBox *edit;
+		IGUISpinBox *spin;
+		ColorCtrl *color;
+
+		color = (ColorCtrl*)getElementFromId(E_DIALOG_ID_BG_COLOR, true);
+		if (color)
+		{
+			const std::string hex = color->getColor();
+			if (isValidHexString(hex))
+				conf->set("bg_color", hex);
+		}
+		color = (ColorCtrl*)getElementFromId(E_DIALOG_ID_GRID_COLOR, true);
+		if (color)
+		{
+			const std::string hex = color->getColor();
+			if (isValidHexString(hex))
+				conf->set("grid_color", hex);
+		}
+		edit = (IGUIEditBox*)
+			getElementFromId(E_DIALOG_ID_WIELD_BONE, true);
+		std::string bone = stringc(edit->getText()).c_str();
+		conf->set("wield_bone", bone);
+
+		spin = (IGUISpinBox*)
+			getElementFromId(E_DIALOG_ID_SCREEN_WIDTH, true);
+		u32 width = spin->getValue();
+		conf->set("screen_width", std::to_string(width));
+		spin = (IGUISpinBox*)
+			getElementFromId(E_DIALOG_ID_SCREEN_HEIGHT, true);
+		u32 height = spin->getValue();
+		conf->set("screen_height", std::to_string(height));
+
+		u32 flags = 0;
+		if (isBoxChecked(E_DIALOG_ID_DEBUG_BBOX))
+			flags |= EDS_BBOX;
+		if (isBoxChecked(E_DIALOG_ID_DEBUG_NORMALS))
+			flags |= EDS_NORMALS;
+		if (isBoxChecked(E_DIALOG_ID_DEBUG_SKELETON))
+			flags |= EDS_SKELETON;
+		if (isBoxChecked(E_DIALOG_ID_DEBUG_WIREFRANE))
+			flags |= EDS_MESH_WIRE_OVERLAY;
+		if (isBoxChecked(E_DIALOG_ID_DEBUG_ALPHA))
+			flags |= EDS_HALF_TRANSPARENCY;
+		if (isBoxChecked(E_DIALOG_ID_DEBUG_BUFFERS))
+			flags |= EDS_BBOX_BUFFERS;
+		conf->set("debug_flags", std::to_string(flags));
+	}
+	return IGUIElement::OnEvent(event);
+}
+
+TexturesDialog::TexturesDialog(IGUIEnvironment *env, IGUIElement *parent,
+	s32 id, const rect<s32> &rectangle, Config *conf, ISceneManager *smgr) :
+	IGUIElement(EGUIET_ELEMENT, env, parent, id, rectangle),
+	conf(conf),
+	smgr(smgr)
+{
+	IGUITabControl *tabs = env->addTabControl(rect<s32>(2,2,398,250), this,
+		true, true);
+
+	IGUITab *tab_model = tabs->addTab(L"Model");
+	IGUITab *tab_wield = tabs->addTab(L"Wield");
+	IGUIStaticText *text;
+	IGUIEditBox *edit;
+	IGUIButton *button;
+	stringw fn;
+	std::string key;
+
+	ITexture *image = getTexture("browse.png");
+	ISceneNode *model = smgr->getSceneNodeFromId(E_SCENE_ID_MODEL);
+	ISceneNode *wield = smgr->getSceneNodeFromId(E_SCENE_ID_WIELD);
+	u32 mc_model = (model) ? model->getMaterialCount() : 0;
+	u32 mc_wield = (wield) ? wield->getMaterialCount() : 0;
+
+	for (s32 i = 0; i < 6; ++i)
+	{
+		s32 top = i * 30 + 20;
+		stringw num = stringw(i + 1);
+
+		key = "model_texture_" + std::to_string(i + 1);
+		fn = conf->getCStr(key);
+		text = env->addStaticText(num.c_str(), rect<s32>(15,top,25,top+20),
+			false, false, tab_model, -1);
+		edit = env->addEditBox(fn.c_str(), rect<s32>(35,top,350,top+20),
+			true, tab_model, E_TEXTURE_ID_MODEL + i);
+		edit->setEnabled(i < mc_model);
+		edit->setOverrideColor(SColor(255,255,0,0));
+		edit->enableOverrideColor(false);
+		button = env->addButton(rect<s32>(360,top,380,top+20), tab_model,
+			E_BUTTON_ID_MODEL + i);
+		button->setToolTipText(L"Browse");
+		if (image)
+		{
+			button->setImage(image);
+			button->setUseAlphaChannel(true);
+			button->setDrawBorder(false);
+		}
+		button->setEnabled(i < mc_model);
+
+		key = "wield_texture_" + std::to_string(i + 1);
+		fn = conf->getCStr(key);
+		text = env->addStaticText(num.c_str(), rect<s32>(15,top,25,top+20),
+			false, false, tab_wield, -1);
+		edit = env->addEditBox(fn.c_str(), rect<s32>(35,top,350,top+20),
+			true, tab_wield, E_TEXTURE_ID_WIELD + i);
+		edit->setEnabled(i < mc_wield);
+		edit->setOverrideColor(SColor(255,255,0,0));
+		edit->enableOverrideColor(false);
+		button = env->addButton(rect<s32>(360,top,380,top+20), tab_wield,
+			E_BUTTON_ID_WIELD + i);
+		if (image)
+		{
+			button->setImage(image);
+			button->setUseAlphaChannel(true);
+			button->setDrawBorder(false);
+		}
+		button->setEnabled(i < mc_wield);
+	}
+	button = env->addButton(rect<s32>(315,255,395,285), this,
+		E_DIALOG_ID_TEXTURES_OK, L"OK");
+	button = env->addButton(rect<s32>(230,255,310,285), this,
+		E_DIALOG_ID_TEXTURES_CANCEL, L"Cancel");
+}
+
+ITexture *TexturesDialog::getTexture(const io::path &filename)
+{
+	IVideoDriver *driver = Environment->getVideoDriver();
+	ITexture *texture = driver->findTexture(filename);
+	if (!texture)
+		texture = driver->getTexture(filename);
+	return texture;
+}
+
+bool TexturesDialog::OnEvent(const SEvent &event)
+{
+	if (event.EventType == EET_GUI_EVENT)
+	{
+		s32 id = event.GUIEvent.Caller->getID();
+		if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUS_LOST)
+		{
+			if (event.GUIEvent.Caller->getType() == EGUIET_EDIT_BOX)
+			{
+				IGUIEditBox *edit = (IGUIEditBox*)event.GUIEvent.Caller;
+				if (edit)
+				{
+					stringc fn = stringc(edit->getText()).c_str();
+					edit->enableOverrideColor(!(getTexture(fn)));
+				}
+			}
+		}
+		else if (event.GUIEvent.EventType == EGET_BUTTON_CLICKED)
+		{
+			if (id == E_DIALOG_ID_TEXTURES_OK)
+			{
+				ISceneNode *model = smgr->getSceneNodeFromId(E_SCENE_ID_MODEL);
+				ISceneNode *wield = smgr->getSceneNodeFromId(E_SCENE_ID_WIELD);
+				IGUIEditBox *edit;
+
+				for (s32 i = 0; i < 6; ++i)
+				{
+					std::string idx = std::to_string(i + 1);
+					edit = (IGUIEditBox*)
+						getElementFromId(E_TEXTURE_ID_MODEL + i, true);
+					if (edit && model && i < model->getMaterialCount())
+					{
+						stringc fn = stringc(edit->getText()).c_str();
+						ITexture *texture = getTexture(fn);
+						if (texture)
+						{
+							std::string key = "model_texture_" + idx;
+							conf->set(key, fn.c_str());
+							SMaterial &material = model->getMaterial(i);
+							material.TextureLayer[0].Texture = texture;
+						}
+					}
+					edit = (IGUIEditBox*)
+						getElementFromId(E_TEXTURE_ID_WIELD + i, true);
+					if (edit && wield && i < wield->getMaterialCount())
+					{
+						stringc fn = stringc(edit->getText()).c_str();
+						ITexture *texture = getTexture(fn);
+						if (texture)
+						{
+							std::string key = "wield_texture_" + idx;
+							conf->set(key, fn.c_str());
+							SMaterial &material = wield->getMaterial(i);
+							material.TextureLayer[0].Texture = texture;
+						}
+					}
+				}
+			}
+			else
+			{
+				for (s32 i = 0; i < 6; ++i)
+				{
+					if (id == E_BUTTON_ID_MODEL + i)
+					{
+						Environment->addFileOpenDialog(L"Open Image File",
+							 true, this, E_TEXTURE_ID_MODEL + i);
+						break;
+					}
+					else if (id == E_BUTTON_ID_WIELD + i)
+					{
+						Environment->addFileOpenDialog(L"Open Image File",
+							 true, this, E_TEXTURE_ID_WIELD + i);
+						break;
+					}
+				}
+			}
+		}
+		else if (event.GUIEvent.EventType == EGET_FILE_SELECTED)
+		{
+			IGUIFileOpenDialog *dialog =
+				(IGUIFileOpenDialog*)event.GUIEvent.Caller;
+
+			stringw fn = stringw(dialog->getFileName());
+			if (!fn.empty())
+			{
+				s32 id = dialog->getID();
+				IGUIEditBox *edit = (IGUIEditBox*)getElementFromId(id, true);
+				if (edit)
+				{
+					edit->setText(fn.c_str());
+					edit->enableOverrideColor(!(getTexture(fn)));
+				}
+			}
+		}
+	}
+	return IGUIElement::OnEvent(event);
+}

src/dialog.h

@@ -0,0 +1,109 @@
+#ifndef D_DIALOG_H
+#define D_DIALOG_H
+
+using namespace irr;
+using namespace core;
+using namespace scene;
+using namespace gui;
+using namespace video;
+
+enum
+{
+	E_DIALOG_ID_ABOUT = 0x1000,
+	E_DIALOG_ID_SETTINGS,
+	E_DIALOG_ID_BG_COLOR,
+	E_DIALOG_ID_GRID_COLOR,
+	E_DIALOG_ID_COLOR_EDIT,
+	E_DIALOG_ID_COLOR_PREVIEW,
+	E_DIALOG_ID_WIELD_BONE,
+	E_DIALOG_ID_SCREEN_WIDTH,
+	E_DIALOG_ID_SCREEN_HEIGHT,
+	E_DIALOG_ID_DEBUG_BBOX,
+	E_DIALOG_ID_DEBUG_NORMALS,
+	E_DIALOG_ID_DEBUG_SKELETON,
+	E_DIALOG_ID_DEBUG_WIREFRANE,
+	E_DIALOG_ID_DEBUG_ALPHA,
+	E_DIALOG_ID_DEBUG_BUFFERS,
+	E_DIALOG_ID_ABOUT_OK,
+	E_DIALOG_ID_ABOUT_LINK,
+	E_DIALOG_ID_SETTINGS_OK,
+	E_DIALOG_ID_SETTINGS_CANCEL,
+	E_DIALOG_ID_TEXTURES,
+	E_DIALOG_ID_TEXTURES_OK,
+	E_DIALOG_ID_TEXTURES_CANCEL
+};
+
+enum
+{
+	E_TEXTURE_ID_MODEL = 0x2000,
+	E_TEXTURE_ID_WIELD = 0x2010,
+	E_BUTTON_ID_MODEL = 0x2020,
+	E_BUTTON_ID_WIELD = 0x2030
+};
+
+class Config;
+
+class HyperlinkCtrl : public IGUIElement
+{
+public:
+	HyperlinkCtrl(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+		const rect<s32> &rectangle, const wchar_t *title, std::string url);
+	virtual ~HyperlinkCtrl() {}
+	virtual void draw();
+	virtual bool OnEvent(const SEvent &event);
+
+private:
+	std::string url;
+	bool is_active;
+};
+
+class ColorCtrl : public IGUIElement
+{
+public:
+	ColorCtrl(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+		const rect<s32> &rectangle, const wchar_t *label);
+	virtual ~ColorCtrl() {}
+	virtual bool OnEvent(const SEvent &event);
+	void setColor(const std::string &hex);
+	std::string getColor() const;
+};
+
+class AboutDialog : public IGUIElement
+{
+public:
+	AboutDialog(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+		const rect<s32> &rectangle);
+	virtual ~AboutDialog() {}
+};
+
+class SettingsDialog : public IGUIElement
+{
+public:
+	SettingsDialog(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+		const rect<s32> &rectangle, Config *conf);
+	virtual ~SettingsDialog() {}
+	virtual bool OnEvent(const SEvent &event);
+
+private:
+	bool isBoxChecked(s32 id) const;
+	void colorFromHexStr(const std::string &hex);
+
+	Config *conf;
+};
+
+class TexturesDialog : public IGUIElement
+{
+public:
+	TexturesDialog(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+		const rect<s32> &rectangle, Config *conf, ISceneManager *smgr);
+	virtual ~TexturesDialog() {}
+	virtual bool OnEvent(const SEvent &event);
+
+private:
+	ITexture *getTexture(const io::path &filename);
+
+	Config *conf;
+	ISceneManager *smgr;
+};
+
+#endif // D_DIALOG_H

src/gui.cpp

@@ -0,0 +1,573 @@
+#include <stdlib.h>
+#include <iostream>
+#include <irrlicht.h>
+
+#include "config.h"
+#include "scene.h"
+#include "dialog.h"
+#include "gui.h"
+
+VertexCtrl::VertexCtrl(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+	const rect<s32> &rectangle, f32 step, const wchar_t *label) :
+	IGUIElement(EGUIET_ELEMENT, env, parent, id, rectangle),
+	vertex(0)
+{
+	IGUIStaticText *text = env->addStaticText(label,
+		rect<s32>(0,0,20,20), false, false, this);
+
+	IGUISpinBox *spin = env->addSpinBox(L"", rect<s32>(20,0,120,20),
+		true, this, E_GUI_ID_VERTEX);
+	spin->setDecimalPlaces(2);
+	spin->setValue(0);
+	spin->setStepSize(step);
+	spin->setRange(-1000, 1000);
+}
+
+void VertexCtrl::setValue(const f32 &value)
+{
+	IGUISpinBox *spin = (IGUISpinBox*)getElementFromId(E_GUI_ID_VERTEX);
+	if (spin)
+	{
+		spin->setValue(value);
+		vertex = value;
+	}
+}
+
+bool VertexCtrl::OnEvent(const SEvent &event)
+{
+	if (event.EventType == EET_GUI_EVENT)
+	{
+		if (event.GUIEvent.EventType == EGET_SPINBOX_CHANGED)
+		{
+			IGUISpinBox *spin = (IGUISpinBox*)event.GUIEvent.Caller;
+			if (spin)
+				vertex = spin->getValue();
+		}
+	}
+	else if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUS_LOST)
+	{
+		setValue(vertex);
+	}
+	return IGUIElement::OnEvent(event);
+}
+
+VectorCtrl::VectorCtrl(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+	const rect<s32> &rectangle, f32 step, const wchar_t *label) :
+	IGUIElement(EGUIET_ELEMENT, env, parent, id, rectangle),
+	vector(vector3df(0,0,0))
+{
+	IGUIStaticText *text = env->addStaticText(label,
+		rect<s32>(10,0,150,20), false, false, this);
+
+	VertexCtrl *x = new VertexCtrl(env, this, E_GUI_ID_VECTOR_X,
+		rect<s32>(10,30,150,50), step, L"X");
+	x->drop();
+	VertexCtrl *y = new VertexCtrl(env, this, E_GUI_ID_VECTOR_Y,
+		rect<s32>(10,60,150,80), step, L"Y");
+	y->drop();
+	VertexCtrl *z = new VertexCtrl(env, this, E_GUI_ID_VECTOR_Z,
+		rect<s32>(10,90,150,110), step, L"Z");
+	z->drop();
+}
+
+void VectorCtrl::setVector(const vector3df &vec)
+{
+	vector = vec;
+	VertexCtrl *vertex;
+	vertex = (VertexCtrl*)getElementFromId(E_GUI_ID_VECTOR_X);
+	if (vertex)
+		vertex->setValue(vector.X);
+	vertex = (VertexCtrl*)getElementFromId(E_GUI_ID_VECTOR_Y);
+	if (vertex)
+		vertex->setValue(vector.Y);
+	vertex = (VertexCtrl*)getElementFromId(E_GUI_ID_VECTOR_Z);
+	if (vertex)
+		vertex->setValue(vector.Z);
+}
+
+bool VectorCtrl::OnEvent(const SEvent &event)
+{
+	if (event.EventType == EET_GUI_EVENT &&
+		event.GUIEvent.EventType == EGET_SPINBOX_CHANGED)
+	{
+		VertexCtrl *vertex = (VertexCtrl*)event.GUIEvent.Caller->getParent();
+		if (vertex)
+		{
+			switch (vertex->getID())
+			{
+			case E_GUI_ID_VECTOR_X:
+				vector.X = vertex->getValue();
+				break;
+			case E_GUI_ID_VECTOR_Y:
+				vector.Y = vertex->getValue();
+				break;
+			case E_GUI_ID_VECTOR_Z:
+				vector.Z = vertex->getValue();
+				break;
+			default:
+				break;
+			}
+			SEvent new_event = event;
+			new_event.GUIEvent.Caller = this;
+			return IGUIElement::OnEvent(new_event);
+		}
+	}
+	return IGUIElement::OnEvent(event);
+}
+
+AnimCtrl::AnimCtrl(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+	const rect<s32> &rectangle) :
+	IGUIElement(EGUIET_ELEMENT, env, parent, id, rectangle),
+	button_id(E_GUI_ID_PAUSE)
+{
+	IVideoDriver *driver = env->getVideoDriver();
+	ITexture *image;
+	IGUIButton *button;
+
+	image = driver->getTexture("skip_rev.png");
+	button = env->addButton(rect<s32>(0,4,23,27), this,
+		E_GUI_ID_SKIP_REV);
+	button->setImage(image);
+	button->setUseAlphaChannel(true);
+
+	image = driver->getTexture("play_rev.png");
+	button = env->addButton(rect<s32>(24,4,47,27), this,
+		E_GUI_ID_PLAY_REV);
+	button->setImage(image);
+	button->setUseAlphaChannel(true);
+
+	image = driver->getTexture("pause.png");
+	button = env->addButton(rect<s32>(48,4,71,27), this,
+		E_GUI_ID_PAUSE);
+	button->setImage(image);
+	button->setUseAlphaChannel(true);
+
+	image = driver->getTexture("play_fwd.png");
+	button = env->addButton(rect<s32>(72,4,95,27), this,
+		E_GUI_ID_PLAY_FWD);
+	button->setImage(image);
+	button->setUseAlphaChannel(true);
+
+	image = driver->getTexture("skip_fwd.png");
+	button = env->addButton(rect<s32>(96,4,119,27), this,
+		E_GUI_ID_SKIP_FWD);
+	button->setImage(image);
+	button->setUseAlphaChannel(true);
+}
+
+bool AnimCtrl::OnEvent(const SEvent &event)
+{
+	if (event.EventType == EET_GUI_EVENT)
+	{
+		if (event.GUIEvent.EventType == EGET_BUTTON_CLICKED)
+		{
+			reset(true);
+			IGUIButton *button = (IGUIButton*)event.GUIEvent.Caller;
+			button->setEnabled(false);
+			button->setPressed(true);
+			button_id = button->getID();
+		}
+		else if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUS_LOST)
+		{
+			if (button_id == E_GUI_ID_SKIP_FWD ||
+				button_id == E_GUI_ID_SKIP_REV)
+			{
+				reset(true);
+				IGUIButton *button = (IGUIButton*)
+					getElementFromId(E_GUI_ID_PAUSE);
+				if (button)
+					button->setPressed(true);
+				button_id = E_GUI_ID_PAUSE;
+			}
+		}
+	}
+	return IGUIElement::OnEvent(event);
+}
+
+void AnimCtrl::reset(bool enabled)
+{
+	const list<IGUIElement*> &children = getChildren();
+	list<IGUIElement*>::ConstIterator iter = children.begin();
+	while (iter != children.end())
+	{
+		if ((*iter)->getType() == EGUIET_BUTTON)
+		{
+			IGUIButton *button = (IGUIButton*)(*iter);
+			button->setEnabled(enabled);
+			button->setPressed(false);
+		}
+		++iter;
+	}
+}
+
+ToolBox::ToolBox(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+		const rect<s32> &rectangle, ISceneNode *node) :
+	IGUIElement(EGUIET_ELEMENT, env, parent, id, rectangle)
+{
+	smgr = node->getSceneManager();
+	node_id = node->getID();
+
+	IGUIWindow *dialog = (IGUIWindow*)parent;
+	dialog->setDraggable(false);
+	VectorCtrl *position = new VectorCtrl(env, this, E_GUI_ID_POSITION,
+		rect<s32>(10,0,150,120), 1.0, L"Position:");
+
+	VectorCtrl *rotation = new VectorCtrl(env, this, E_GUI_ID_ROTATION,
+		rect<s32>(10,130,150,250), 15.0, L"Rotation:");
+
+	IGUIStaticText *text;
+	text = env->addStaticText(L"Scale:",
+		rect<s32>(20,260,150,280), false, false, this);
+
+	text = env->addStaticText(L"%",
+		rect<s32>(20,290,40,310), false, false, this);
+
+	IGUISpinBox *scale = env->addSpinBox(L"", rect<s32>(40,290,140,310),
+		true, this, E_GUI_ID_SCALE);
+
+	scale->setDecimalPlaces(0);
+	scale->setStepSize(10.0);
+	scale->setRange(0, 1000);
+
+	position->setVector(node->getPosition());
+	position->drop();
+	rotation->setVector(node->getRotation());
+	rotation->drop();
+	scale->setValue(node->getScale().Y * 100);
+
+	text = env->addStaticText(L"Transparency:",
+		rect<s32>(20,330,150,350), false, false, this);
+
+	IGUIComboBox *combo = env->addComboBox(rect<s32>(20,360,140,380),
+		this, E_GUI_ID_MATERIAL);
+	combo->addItem(L"Opaque");
+	combo->addItem(L"Alpha Channel");
+	combo->addItem(L"Alpha Test");
+
+	switch (node->getMaterial(0).MaterialType)
+	{
+	case EMT_TRANSPARENT_ALPHA_CHANNEL:
+		combo->setSelected(1);
+		break;
+	case EMT_TRANSPARENT_ALPHA_CHANNEL_REF:
+		combo->setSelected(2);
+		break;
+	default:
+		break;
+	}
+}
+
+bool ToolBox::OnEvent(const SEvent &event)
+{
+	if (event.EventType == EET_GUI_EVENT)
+	{
+		s32 id = event.GUIEvent.Caller->getID();
+		if (event.GUIEvent.EventType == EGET_SPINBOX_CHANGED)
+		{
+			ISceneNode *node = smgr->getSceneNodeFromId(node_id);
+			if (node)
+			{
+				IGUIElement *elem = (IGUIElement*)event.GUIEvent.Caller;
+				switch(id)
+				{
+				case E_GUI_ID_POSITION:
+				{
+					VectorCtrl *position = (VectorCtrl*)elem;
+					node->setPosition(position->getVector());
+					break;
+				}
+				case E_GUI_ID_ROTATION:
+				{
+					VectorCtrl *rotation = (VectorCtrl*)elem;
+					node->setRotation(rotation->getVector());
+					break;
+				}
+				case E_GUI_ID_SCALE:
+				{
+					IGUISpinBox *spin = (IGUISpinBox*)elem;
+					f32 s = spin->getValue() / 100;
+					node->setScale(vector3df(s,s,s));
+					break;
+				}
+				default:
+					break;
+				}
+			}
+		}
+		else if(event.GUIEvent.EventType == EGET_COMBO_BOX_CHANGED)
+		{
+			ISceneNode *node = smgr->getSceneNodeFromId(node_id);
+			if (node)
+			{
+				IGUIComboBox *combo = (IGUIComboBox*)event.GUIEvent.Caller;
+				switch (combo->getSelected())
+				{
+				case 0:
+					node->setMaterialType(EMT_SOLID);
+					break;
+				case 1:
+					node->setMaterialType(EMT_TRANSPARENT_ALPHA_CHANNEL);
+					break;
+				case 2:
+					node->setMaterialType(EMT_TRANSPARENT_ALPHA_CHANNEL_REF);
+					break;
+				}
+			}
+		}
+	}
+	return IGUIElement::OnEvent(event);
+}
+
+GUI::GUI(IrrlichtDevice *device, Config *config) :
+	device(device),
+	conf(config),
+	has_focus(false)
+{
+	IGUIEnvironment *env = device->getGUIEnvironment();
+	IGUISkin *skin = env->getSkin();
+	IGUIFont *font = env->getFont("fontlucida.png");
+	if (font)
+		skin->setFont(font);
+
+	skin->setColor(EGDC_3D_FACE, SColor(255,232,232,232));
+	skin->setColor(EGDC_3D_DARK_SHADOW, SColor(255,160,160,160));
+	skin->setColor(EGDC_3D_HIGH_LIGHT, SColor(255,248,248,248));
+	skin->setColor(EGDC_3D_LIGHT, SColor(255,255,255,255));
+	skin->setColor(EGDC_3D_SHADOW, SColor(255,196,196,196));
+	skin->setColor(EGDC_ACTIVE_BORDER, SColor(255,232,232,232));
+	skin->setColor(EGDC_INACTIVE_BORDER, SColor(255,232,232,232));
+	skin->setColor(EGDC_GRAY_EDITABLE, SColor(255,172,172,172));
+	skin->setColor(EGDC_GRAY_TEXT, SColor(255,96,96,96));
+	skin->setColor(EGDC_ACTIVE_CAPTION, SColor(255,16,16,16));
+	skin->setColor(EGDC_INACTIVE_CAPTION, SColor(255,64,64,64));
+
+	for (s32 i=0; i < EGDC_COUNT; ++i)
+	{
+		SColor col = skin->getColor((EGUI_DEFAULT_COLOR)i);
+		col.setAlpha(255);
+		skin->setColor((EGUI_DEFAULT_COLOR)i, col);
+	}
+}
+
+void GUI::initMenu()
+{
+	IGUIEnvironment *env = device->getGUIEnvironment();
+	IGUIContextMenu *menu = env->addMenu(0, E_GUI_ID_MENU);
+	menu->addItem(L"File", -1, true, true);
+	menu->addItem(L"Edit", -1, true, true);
+	menu->addItem(L"View", -1, true, true);
+	menu->addItem(L"Help", -1, true, true);
+
+	IGUIContextMenu *submenu;
+	submenu = menu->getSubMenu(0);
+	submenu->addItem(L"Load Model Mesh", E_GUI_ID_LOAD_MODEL_MESH);
+	submenu->addItem(L"Load Wield Mesh", E_GUI_ID_LOAD_WIELD_MESH);
+	submenu->addSeparator();
+	submenu->addItem(L"Save Configuration", E_GUI_ID_SAVE_CONFIG);
+	submenu->addSeparator();
+	submenu->addItem(L"Quit", E_GUI_ID_QUIT);
+
+	submenu = menu->getSubMenu(1);
+	submenu->addItem(L"Textures", E_GUI_ID_TEXTURES_DIALOG);
+	submenu->addSeparator();
+	submenu->addItem(L"Preferences", E_GUI_ID_SETTINGS_DIALOG);
+
+	submenu = menu->getSubMenu(2);
+	submenu->addItem(L"Model Toolbox", E_GUI_ID_TOOLBOX_MODEL, true, false,
+		false, true);
+	submenu->addItem(L"Wield Toolbox", E_GUI_ID_TOOLBOX_WIELD, true, false,
+		false, true);
+	submenu->addSeparator();
+	submenu->addItem(L"Show Grid", E_GUI_ID_SHOW_GRID, true, false,
+		true, true);
+	submenu->addItem(L"Show Axes", E_GUI_ID_SHOW_AXES, true, false,
+		true, true);
+	submenu->addSeparator();
+	submenu->addItem(L"Projection", -1, true, true);
+	submenu->addItem(L"Filters", -1, true, true);
+	submenu->addSeparator();
+	submenu->addItem(L"Show Wield Item", E_GUI_ID_ENABLE_WIELD, true, false,
+		conf->getBool("wield_show"), true);
+	submenu->addItem(L"Backface Culling", E_GUI_ID_BACK_FACE_CULL, true, false,
+		conf->getBool("backface_cull"), true);
+	submenu->addSeparator();
+	submenu->addItem(L"Model Debug Info", E_GUI_ID_DEBUG_INFO, true, false,
+		conf->getBool("debug_info"), true);
+
+	submenu = menu->getSubMenu(2)->getSubMenu(6);
+	submenu->addItem(L"Perspective", E_GUI_ID_PERSPECTIVE, true, false,
+		!conf->getBool("ortho"), true);
+	submenu->addItem(L"Orthogonal", E_GUI_ID_ORTHOGONAL, true, false,
+		conf->getBool("ortho"), true);
+
+	submenu = menu->getSubMenu(2)->getSubMenu(7);
+	submenu->addItem(L"Bilinear", E_GUI_ID_BILINEAR, true, false,
+		conf->getBool("bilinear"), true);
+	submenu->addItem(L"Trilinear", E_GUI_ID_TRILINEAR, true, false,
+		conf->getBool("trilinear"), true);
+	submenu->addItem(L"Anisotropic", E_GUI_ID_ANISOTROPIC, true, false,
+		conf->getBool("anisotropic"), true);
+
+	submenu = menu->getSubMenu(3);
+	submenu->addItem(L"About", E_DIALOG_ID_ABOUT);
+}
+
+void GUI::initToolBar()
+{
+	IVideoDriver *driver = device->getVideoDriver();
+	IGUIEnvironment *env = device->getGUIEnvironment();
+	IGUIStaticText *text;
+	IGUISpinBox *spin;
+
+	IGUIToolBar *toolbar = env->addToolBar(0, E_GUI_ID_TOOLBAR);
+	text = env->addStaticText(L"Animation:",
+		rect<s32>(20,5,120,25), false, false, toolbar);
+
+	text = env->addStaticText(L"Start",
+		rect<s32>(130,5,160,25), false, false, toolbar);
+	spin = env->addSpinBox(L"", rect<s32>(170,5,230,25),
+		true, toolbar, E_GUI_ID_ANIM_START);
+	spin->setDecimalPlaces(0);
+	spin->setRange(0, 10000);
+
+	text = env->addStaticText(L"End",
+		rect<s32>(255,5,280,25), false, false, toolbar);
+	spin = env->addSpinBox(L"", rect<s32>(290,5,350,25),
+		true, toolbar, E_GUI_ID_ANIM_END);
+	spin->setDecimalPlaces(0);
+	spin->setRange(0, 10000);
+
+	text = env->addStaticText(L"Speed",
+		rect<s32>(370,5,410,25), false, false, toolbar);
+	spin = env->addSpinBox(L"", rect<s32>(420,5,480,25),
+		true, toolbar, E_GUI_ID_ANIM_SPEED);
+	spin->setDecimalPlaces(0);
+	spin->setRange(0, 10000);
+
+	text = env->addStaticText(L"Frame",
+		rect<s32>(495,5,535,25), false, false, toolbar);
+	spin = env->addSpinBox(L"", rect<s32>(550,5,610,25),
+		true, toolbar, E_GUI_ID_ANIM_FRAME);
+	spin->setDecimalPlaces(0);
+	spin->setRange(0, 10000);
+
+	s32 w = driver->getScreenSize().Width;
+	AnimCtrl *anim = new AnimCtrl(env, toolbar, E_GUI_ID_ANIM_CTRL,
+		rect<s32>(w-120,0,w,30));
+	anim->drop();
+}
+
+void GUI::showToolBox(s32 id)
+{
+	ISceneManager *smgr = device->getSceneManager();
+	IGUIEnvironment *env = device->getGUIEnvironment();
+	IGUIElement *root = env->getRootGUIElement();
+	if (root->getElementFromId(id, true))
+		return;
+
+	switch (id)
+	{
+	case E_GUI_ID_TOOLBOX_MODEL:
+	{
+		IVideoDriver *driver = device->getVideoDriver();
+		s32 w = driver->getScreenSize().Width;
+		ISceneNode *node = smgr->getSceneNodeFromId(E_SCENE_ID_MODEL);
+		IGUIWindow *window = env->addWindow(rect<s32>(w-160,54,w,490),
+			false, L"Model Properties", root, id);
+		ToolBox *toolbox = new ToolBox(env, window, id,
+			rect<s32>(0,30,160,800), node);
+		toolbox->drop();
+		env->setFocus(window);
+		break;
+	}
+	case E_GUI_ID_TOOLBOX_WIELD:
+	{
+		ISceneNode *node = smgr->getSceneNodeFromId(E_SCENE_ID_WIELD);
+		IGUIWindow *window = env->addWindow(rect<s32>(0,54,160,490),
+			false, L"Wield Properties", root, id);
+		ToolBox *toolbox = new ToolBox(env, window, id,
+			rect<s32>(0,30,160,800), node);
+		toolbox->drop();
+		env->setFocus(window);
+		break;
+	}
+	default:
+		break;
+	}
+}
+
+void GUI::closeToolBox(s32 id)
+{
+	IGUIElement *elem = getElement(id);
+	if (elem)
+		elem->remove();
+}
+
+void GUI::reloadToolBox(s32 id)
+{
+	IGUIElement *elem = getElement(id);
+	if (elem)
+	{
+		elem->remove();
+		showToolBox(id);
+	}
+}
+
+void GUI::moveElement(s32 id, const vector2di &move)
+{
+	IGUIElement *elem = getElement(id);
+	if (elem)
+	{
+		vector2di pos = elem->getRelativePosition().UpperLeftCorner + move;
+		elem->setRelativePosition(position2di(pos.X, pos.Y));
+	}
+}
+
+void GUI::showTexturesDialog()
+{
+	IGUIEnvironment *env = device->getGUIEnvironment();
+	ISceneManager *smgr = device->getSceneManager();
+	IGUIWindow *window = env->addWindow(getWindowRect(400, 310),
+		true, L"Textures");
+
+	TexturesDialog *dialog = new TexturesDialog(env, window,
+		E_DIALOG_ID_TEXTURES, rect<s32>(0,20,400,310), conf, smgr);
+	dialog->drop();
+}
+
+void GUI::showSettingsDialog()
+{
+	IGUIEnvironment *env = device->getGUIEnvironment();
+	IGUIWindow *window = env->addWindow(getWindowRect(400, 310),
+		true, L"Settings");
+
+	SettingsDialog *dialog = new SettingsDialog(env, window,
+		E_DIALOG_ID_SETTINGS, rect<s32>(0,20,400,310), conf);
+	dialog->drop();
+}
+
+void GUI::showAboutDialog()
+{
+	IGUIEnvironment *env = device->getGUIEnvironment();
+	IGUIWindow *window = env->addWindow(getWindowRect(300, 300),
+		true, L"About");
+
+	AboutDialog *dialog = new AboutDialog(env, window,
+		E_DIALOG_ID_ABOUT, rect<s32>(0,20,300,300));
+	dialog->drop();
+}
+
+IGUIElement *GUI::getElement(s32 id)
+{
+	IGUIEnvironment *env = device->getGUIEnvironment();
+	IGUIElement *root = env->getRootGUIElement();
+	return root->getElementFromId(id, true);
+}
+
+const rect<s32> GUI::getWindowRect(const u32 &width, const u32 &height) const
+{
+	IVideoDriver *driver = device->getVideoDriver();
+	dimension2du s = driver->getScreenSize();
+	vector2di pos = vector2di((s.Width - width) / 2, (s.Height - height) / 2);
+	return rect<s32>(pos, pos + vector2di(width, height));
+}

src/gui.h

@@ -0,0 +1,133 @@
+#ifndef D_GUI_H
+#define D_GUI_H
+
+using namespace irr;
+using namespace core;
+using namespace scene;
+using namespace gui;
+using namespace video;
+
+enum
+{
+	E_GUI_ID_MENU,
+	E_GUI_ID_TOOLBAR,
+	E_GUI_ID_LOAD_MODEL_MESH,
+	E_GUI_ID_LOAD_WIELD_MESH,
+	E_GUI_ID_SAVE_CONFIG,
+	E_GUI_ID_QUIT,
+	E_GUI_ID_TEXTURES_DIALOG,
+	E_GUI_ID_SETTINGS_DIALOG,
+	E_GUI_ID_TOOLBOX_MODEL,
+	E_GUI_ID_TOOLBOX_WIELD,
+	E_GUI_ID_SHOW_GRID,
+	E_GUI_ID_SHOW_AXES,
+	E_GUI_ID_ENABLE_WIELD,
+	E_GUI_ID_BACK_FACE_CULL,
+	E_GUI_ID_ORTHOGONAL,
+	E_GUI_ID_PERSPECTIVE,
+	E_GUI_ID_BILINEAR,
+	E_GUI_ID_TRILINEAR,
+	E_GUI_ID_ANISOTROPIC,
+	E_GUI_ID_DEBUG_INFO,
+	E_GUI_ID_VERTEX,
+	E_GUI_ID_VECTOR_X,
+	E_GUI_ID_VECTOR_Y,
+	E_GUI_ID_VECTOR_Z,
+	E_GUI_ID_POSITION,
+	E_GUI_ID_ROTATION,
+	E_GUI_ID_SCALE,
+	E_GUI_ID_MATERIAL,
+	E_GUI_ID_ANIM_CTRL,
+	E_GUI_ID_ANIM_START,
+	E_GUI_ID_ANIM_END,
+	E_GUI_ID_ANIM_FRAME,
+	E_GUI_ID_ANIM_SPEED,
+	E_GUI_ID_SKIP_REV,
+	E_GUI_ID_PLAY_REV,
+	E_GUI_ID_PAUSE,
+	E_GUI_ID_PLAY_FWD,
+	E_GUI_ID_SKIP_FWD
+};
+
+class Config;
+
+class VertexCtrl : public IGUIElement
+{
+public:
+	VertexCtrl(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+		const rect<s32> &rectangle, f32 step, const wchar_t *label);
+	virtual ~VertexCtrl() {}
+	virtual bool OnEvent(const SEvent &event);
+	f32 getValue() const { return vertex; }
+	void setValue(const f32 &value);
+
+private:
+	f32 vertex;
+};
+
+class VectorCtrl : public IGUIElement
+{
+public:
+	VectorCtrl(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+		const rect<s32> &rectangle, f32 step, const wchar_t *label);
+	virtual ~VectorCtrl() {}
+	virtual bool OnEvent(const SEvent &event);
+	vector3df getVector() const { return vector; }
+	void setVector(const vector3df &vec);
+
+private:
+	vector3df vector;
+};
+
+class AnimCtrl : public IGUIElement
+{
+public:
+	AnimCtrl(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+		const rect<s32> &rectangle);
+	virtual ~AnimCtrl() {}
+	virtual bool OnEvent(const SEvent &event);
+	void reset(bool enabled);
+
+private:
+	s32 button_id;
+};
+
+class ToolBox : public IGUIElement
+{
+public:
+	ToolBox(IGUIEnvironment *env, IGUIElement *parent, s32 id,
+		const rect<s32> &rectangle, ISceneNode *node);
+	virtual ~ToolBox() {}
+	virtual bool OnEvent(const SEvent &event);
+
+private:
+	s32 node_id;
+	ISceneManager *smgr;
+};
+
+class GUI
+{
+public:
+	GUI(IrrlichtDevice *device, Config *config);
+	void initMenu();
+	void initToolBar();
+	void showToolBox(s32 id);
+	void closeToolBox(s32 id);
+	void reloadToolBox(s32 id);
+	IGUIElement *getElement(s32 id);
+	bool getFocused() const { return has_focus; }
+	void setFocused(const bool &focus) { has_focus = focus; }
+	void moveElement(s32 id, const vector2di &move);
+	void showTexturesDialog();
+	void showSettingsDialog();
+	void showAboutDialog();
+
+private:
+	const rect<s32> getWindowRect(const u32 &width, const u32 &height) const;
+
+	IrrlichtDevice *device;
+	Config *conf;
+	bool has_focus;
+};
+
+#endif // D_GUI_H

src/main.cpp

@@ -0,0 +1,74 @@
+#include <stdlib.h>
+#include <iostream>
+#include <irrlicht.h>
+
+#include "config.h"
+#include "viewer.h"
+
+int main()
+{
+	Config *conf = new Config("../bin/config.ini");
+	std::map<std::string, std::string> defaults = {
+		{"model_mesh", "character.b3d"},
+		{"model_position", "0,-10,0"},
+		{"model_rotation", "0,0,0"},
+		{"model_scale", "100"},
+		{"model_material", "14"},
+		{"model_texture_1", "character.png"},
+		{"model_texture_2", "blank.png"},
+		{"model_texture_3", "blank.png"},
+		{"model_texture_4", "blank.png"},
+		{"model_texture_5", "blank.png"},
+		{"model_texture_6", "blank.png"},
+		{"wield_mesh", "pickaxe.obj"},
+		{"wield_position", "0,5,0"},
+		{"wield_rotation", "0,0,0"},
+		{"wield_scale", "400"},
+		{"wield_material", "14"},
+		{"wield_show", "true"},
+		{"wield_bone", "Arm_Right"},
+		{"wield_texture_1", "pickaxe.png"},
+		{"wield_texture_2", "blank.png"},
+		{"wield_texture_3", "blank.png"},
+		{"wield_texture_4", "blank.png"},
+		{"wield_texture_5", "blank.png"},
+		{"wield_texture_6", "blank.png"},
+		{"anim_start", "168"},
+		{"anim_end", "187"},
+		{"anim_speed", "15"},
+		{"ortho", "false"},
+		{"bilinear", "false"},
+		{"trilinear", "false"},
+		{"anisotropic", "false"},
+		{"backface_cull", "true"},
+		{"bg_color", "808080"},
+		{"grid_color", "404040"},
+		{"screen_width", "800"},
+		{"screen_height","600"},
+		{"debug_info", "false"},
+		{"debug_flags", "1"},
+	};
+	conf->load();
+	for (std::map<std::string, std::string>::iterator it = defaults.begin();
+		it != defaults.end(); it++)
+	{
+		if (!conf->hasKey(it->first))
+			conf->set(it->first, it->second);
+	}
+	conf->save();
+
+	u32 width = conf->getInt("screen_width");
+	u32 height = conf->getInt("screen_height");
+	IrrlichtDevice *device = createDevice(EDT_OPENGL,
+		dimension2d<u32>(width, height), 16, false, false, false);
+
+	if (device && conf)
+	{
+		Viewer *viewer = new Viewer(conf);
+		viewer->run(device);
+		device->drop();
+		delete viewer;
+		delete conf;
+	}
+	return 1;
+}

src/scene.cpp

@@ -0,0 +1,320 @@
+#include <stdlib.h>
+#include <iostream>
+#include <irrlicht.h>
+
+#include "config.h"
+#include "scene.h"
+
+Scene::Scene(ISceneNode *parent, ISceneManager *smgr, s32 id) :
+	ISceneNode(parent, smgr, id),
+	conf(0),
+	show_grid(true),
+	show_axes(true)
+{
+	material.Lighting = false;
+	material.MaterialType = EMT_TRANSPARENT_ALPHA_CHANNEL;
+	material.BackfaceCulling = false;
+	grid_color = SColor(64,128,128,128);
+}
+
+bool Scene::load(Config *config)
+{
+	conf = config;
+	if (!loadModelMesh(conf->getCStr("model_mesh")))
+		return false;
+
+	setAttachment();
+	loadWieldMesh(conf->getCStr("wield_mesh"));
+	setBackFaceCulling(conf->getBool("backface_cull"));
+	setGridColor(conf->getHex("grid_color"));
+	return true;
+}
+
+bool Scene::loadModelMesh(const io::path &filename)
+{
+	if (!conf)
+		return false;
+
+	IAnimatedMesh *mesh = SceneManager->getMesh(filename);
+	if (!mesh)
+		return false;
+
+	ISceneNode *wield = getNode(E_SCENE_ID_WIELD);
+	if (wield)
+		wield->setParent(this);
+
+	ISceneNode *model = getNode(E_SCENE_ID_MODEL);
+	if (model)
+	{
+		model->remove();
+		model = 0;
+	}
+	model = SceneManager->addAnimatedMeshSceneNode(mesh, this,
+		E_SCENE_ID_MODEL);
+	if (!model)
+		return false;
+
+	Vector pos = conf->getVector("model_position");
+	Vector rot = conf->getVector("model_rotation");
+	f32 s = (f32)conf->getInt("model_scale") / 100;
+	u32 mat = conf->getInt("model_material");
+
+	model->setMaterialFlag(EMF_LIGHTING, false);
+	model->setPosition(vector3df(pos.x, pos.y, pos.z));
+	model->setRotation(vector3df(rot.x, rot.y, rot.z));
+	model->setScale(vector3df(s,s,s));
+	model->setMaterialType((E_MATERIAL_TYPE)mat);
+	model->setMaterialFlag(EMF_BILINEAR_FILTER,
+		conf->getBool("bilinear"));
+	model->setMaterialFlag(EMF_TRILINEAR_FILTER,
+		conf->getBool("trilinear"));
+	model->setMaterialFlag(EMF_ANISOTROPIC_FILTER,
+		conf->getBool("anisotropic"));
+
+	setDebugInfo(conf->getBool("debug_info"));
+	if (wield)
+		setAttachment();
+
+	loadTextures(model, "model");
+	return true;
+}
+
+bool Scene::loadWieldMesh(const io::path &filename)
+{
+	if (!conf)
+		return false;
+
+	IMesh *mesh = SceneManager->getMesh(filename);
+	if (!mesh)
+		return false;
+
+	ISceneNode *wield = getNode(E_SCENE_ID_WIELD);
+	if (wield)
+	{
+		wield->remove();
+		wield = 0;
+	}
+	wield = SceneManager->addMeshSceneNode(mesh, this,
+		E_SCENE_ID_WIELD);
+
+	if (!wield)
+		return false;
+
+	Vector pos = conf->getVector("wield_position");
+	Vector rot = conf->getVector("wield_rotation");
+	f32 s = (f32)conf->getInt("wield_scale") / 100;
+	u32 mat = conf->getInt("wield_material");
+
+	wield->setMaterialFlag(EMF_LIGHTING, false);
+	wield->setPosition(vector3df(pos.x, pos.y, pos.z));
+	wield->setRotation(vector3df(rot.x, rot.y, rot.z));
+	wield->setScale(vector3df(s,s,s));
+	wield->setVisible(conf->getBool("wield_show"));
+	wield->setMaterialType((E_MATERIAL_TYPE)mat);
+	wield->setMaterialFlag(EMF_BILINEAR_FILTER,
+		conf->getBool("bilinear"));
+	wield->setMaterialFlag(EMF_TRILINEAR_FILTER,
+		conf->getBool("trilinear"));
+	wield->setMaterialFlag(EMF_ANISOTROPIC_FILTER,
+		conf->getBool("anisotropic"));
+	wield->setVisible(conf->getBool("wield_show"));
+
+	setAttachment();
+	loadTextures(wield, "wield");
+	return true;
+}
+
+void Scene::loadTextures(ISceneNode *node, const std::string &prefix)
+{
+	IVideoDriver *driver = SceneManager->getVideoDriver();
+	for (u32 i = 0; i < node->getMaterialCount(); ++i)
+	{
+		std::string key = prefix + "_texture_" + std::to_string(i + 1);
+		io::path fn = conf->getCStr(key);
+		ITexture *texture = driver->getTexture(fn);
+		if (texture)
+			driver->removeTexture(texture);
+		texture = driver->getTexture(fn);
+		if (texture)
+		{
+			SMaterial &material = node->getMaterial(i);
+			material.TextureLayer[0].Texture = texture;
+		}
+	}
+}
+
+ISceneNode *Scene::getNode(s32 id)
+{
+	return SceneManager->getSceneNodeFromId(id);
+}
+
+void Scene::setAttachment()
+{
+	if (!conf)
+		return;
+
+	IAnimatedMeshSceneNode *model =
+		(IAnimatedMeshSceneNode*)getNode(E_SCENE_ID_MODEL);
+	ISceneNode *wield = getNode(E_SCENE_ID_WIELD);
+	if (!model || !wield)
+		return;
+
+	IBoneSceneNode *bone = 0;
+	if (model->getJointCount() > 0)
+	{
+		stringc wield_bone = conf->getCStr("wield_bone");
+		bone = model->getJointNode(wield_bone.c_str());
+	}
+	if (bone)
+		wield->setParent(bone);
+	else
+		wield->setParent(model);
+}
+
+void Scene::setAnimation(const u32 &start, const u32 &end, const s32 &speed)
+{
+	if (!conf)
+		return;
+
+	IAnimatedMeshSceneNode *model =
+		(IAnimatedMeshSceneNode*)getNode(E_SCENE_ID_MODEL);
+
+	if (model)
+	{
+		model->setFrameLoop(start, end);
+		model->setAnimationSpeed(speed);
+	}
+}
+
+void Scene::setFilter(E_MATERIAL_FLAG flag, const bool &is_enabled)
+{
+	ISceneNode *model = getNode(E_SCENE_ID_MODEL);
+	if (model)
+		model->setMaterialFlag(flag, is_enabled);
+
+	ISceneNode *wield = getNode(E_SCENE_ID_WIELD);
+	if (wield)
+		wield->setMaterialFlag(flag, is_enabled);
+}
+
+void Scene::setBackFaceCulling(const bool &is_enabled)
+{
+	ISceneNode *model = getNode(E_SCENE_ID_MODEL);
+	if (model)
+		model->setMaterialFlag(EMF_BACK_FACE_CULLING, is_enabled);
+
+	ISceneNode *wield = getNode(E_SCENE_ID_WIELD);
+	if (wield)
+		wield->setMaterialFlag(EMF_BACK_FACE_CULLING, is_enabled);
+}
+
+void Scene::setDebugInfo(const bool &is_visible)
+{
+	ISceneNode *model = getNode(E_SCENE_ID_MODEL);
+	if (model)
+	{
+		u32 state = (is_visible) ? conf->getInt("debug_flags") : EDS_OFF;
+		model->setDebugDataVisible(state);
+	}
+}
+
+void Scene::rotate(s32 axis, const s32 &step)
+{
+	vector3df rot = getRotation();
+	switch (axis)
+	{
+	case E_SCENE_AXIS_X:
+		rot.X = int(rot.X / step) * step + step;
+		break;
+	case E_SCENE_AXIS_Y:
+		rot.Y = int(rot.Y / step) * step + step;
+		break;
+	case E_SCENE_AXIS_Z:
+		rot.Z = int(rot.Z / step) * step + step;
+		break;
+	}
+	setRotation(rot);
+}
+
+void Scene::refresh()
+{
+	ISceneNode *model = getNode(E_SCENE_ID_MODEL);
+	if (model)
+		loadTextures(model, "model");
+	ISceneNode *wield = getNode(E_SCENE_ID_WIELD);
+	if (wield)
+		loadTextures(wield, "wield");
+}
+
+void Scene::jump()
+{
+	// quick and dirty jump animation to test attachment inertia
+	// this should eventually be improved or removed
+	ISceneNode *model = getNode(E_SCENE_ID_MODEL);
+	if (!model)
+		return;
+
+	Vector p = conf->getVector("model_position");
+	vector3df start = vector3df(p.x,p.y,p.z);
+	vector3df end = start + vector3df(0,10,0);
+	ISceneNodeAnimator *anim =
+		SceneManager->createFlyStraightAnimator(start, end, 380, false, true);
+	model->removeAnimators();
+	model->addAnimator(anim);
+	anim->drop();
+}
+
+void Scene::OnRegisterSceneNode()
+{
+	if (IsVisible)
+		SceneManager->registerNodeForRendering(this);
+
+	ISceneNode::OnRegisterSceneNode();
+}
+
+void Scene::render()
+{
+	if (!show_grid)
+		return;
+
+	IVideoDriver *driver = SceneManager->getVideoDriver();
+	driver->setMaterial(material);
+	driver->setTransform(ETS_WORLD, AbsoluteTransformation);
+
+	SColor grid = grid_color;
+	grid.setAlpha(64);
+	for (f32 n = -10; n <= 10; n += 2)
+	{
+		driver->draw3DLine(vector3df(n,0,-10), vector3df(n,-0,10), grid);
+		driver->draw3DLine(vector3df(-10,0,n), vector3df(10,-0,n), grid);
+	}
+	if (!show_axes)
+		return;
+
+	SColor red(128,255,0,0);
+	SColor green(128,0,255,0);
+	SColor blue(128,0,0,255);
+
+	driver->draw3DLine(vector3df(-10,0,-10), vector3df(-8,0,-10), red);
+	driver->draw3DLine(vector3df(-8,0,-10), vector3df(-8.5,0,-9.8), red);
+	driver->draw3DLine(vector3df(-8,0,-10), vector3df(-8.5,0,-10.2), red);
+
+	driver->draw3DLine(vector3df(-10,0,-10), vector3df(-10,2,-10), green);
+	driver->draw3DLine(vector3df(-10,2,-10), vector3df(-9.8,1.5,-10), green);
+	driver->draw3DLine(vector3df(-10,2,-10), vector3df(-10.2,1.5,-10), green);
+
+	driver->draw3DLine(vector3df(-10,0,-10), vector3df(-10,0,-8), blue);
+	driver->draw3DLine(vector3df(-10,0,-8), vector3df(-9.8,0,-8.5), blue);
+	driver->draw3DLine(vector3df(-10,0,-8), vector3df(-10.2,0,-8.5), blue);
+
+	IGUIEnvironment *env = SceneManager->getGUIEnvironment();
+	IGUIFont *font = env->getFont("fontlucida.png");
+	if (font)
+	{
+		s32 btm = driver->getScreenSize().Height;
+		s32 top = btm - 20;
+		font->draw(L"X", rect<s32>(5,top,15,btm), red);
+		font->draw(L"Y", rect<s32>(15,top,25,btm), green);
+		font->draw(L"Z", rect<s32>(25,top,35,btm), blue);
+	}
+}

src/scene.h

@@ -0,0 +1,64 @@
+#ifndef D_SCENE_H
+#define D_SCENE_H
+
+enum
+{
+	E_SCENE_ID,
+	E_SCENE_ID_MODEL,
+	E_SCENE_ID_WIELD
+};
+
+enum
+{
+	E_SCENE_AXIS_X,
+	E_SCENE_AXIS_Y,
+	E_SCENE_AXIS_Z
+};
+
+using namespace irr;
+using namespace core;
+using namespace scene;
+using namespace gui;
+using namespace video;
+
+class Config;
+
+class Scene : public ISceneNode
+{
+public:
+	Scene(ISceneNode *parent, ISceneManager *mgr, s32 id);
+	~Scene() {}
+	bool load(Config *config);
+	bool loadModelMesh(const io::path &filename);
+	bool loadWieldMesh(const io::path &filename);
+	ISceneNode *getNode(s32 id);
+	void setAttachment();
+	void setAnimation(const u32 &start, const u32 &end, const s32 &speed);
+	void setFilter(E_MATERIAL_FLAG flag, const bool &is_enabled);
+	void setBackFaceCulling(const bool &is_enabled);
+	void setGridColor(SColor color) { grid_color = color; }
+	void setGridVisible(const bool &is_visible) { show_grid = is_visible; }
+	void setAxesVisible(const bool &is_visible) { show_axes = is_visible; }
+	void setDebugInfo(const bool &is_visible);
+	void rotate(s32 axis, const s32 &step);
+	void refresh();
+	void jump();
+
+	virtual void OnRegisterSceneNode();
+	virtual const aabbox3d<f32> &getBoundingBox() const { return box; }
+	virtual SMaterial &getMaterial(u32 i) { return material; }
+	virtual u32 getMaterialCount() const { return 1; }
+	virtual void render();
+
+private:
+	void loadTextures(ISceneNode *node, const std::string &prefix);
+
+	Config *conf;
+	bool show_grid;
+	bool show_axes;
+	SColor grid_color;
+	aabbox3d<f32> box;
+	SMaterial material;
+};
+
+#endif // D_SCENE_H

src/trackball.cpp

@@ -0,0 +1,84 @@
+#include <math.h>
+#include <irrlicht.h>
+
+#include "trackball.h"
+
+Trackball::Trackball(const u32 &width, const u32 &height) :
+	is_clicked(false),
+	is_moving(false)
+{
+	transform.makeIdentity();
+	setBounds(width, height);
+}
+
+vector3df Trackball::getVector(const position2df &pos) const
+{
+	vector3df vect;
+	vect.X = 1.0 * pos.X / screen.Width * 2 - 1.0;
+	vect.Y = 1.0 * pos.Y / screen.Height * 2 - 1.0;
+	vect.Z = 0;
+
+	f32 len = vect.X * vect.X + vect.Y * vect.Y;
+	if (len > 1.0f)
+		vect.normalize();
+	else
+		vect.Z = -sqrt(1.0f - len);
+
+	return vect;
+}
+
+void Trackball::setBounds(const u32 &width, const u32 &height)
+{
+	screen = dimension2di(width, height);
+}
+
+void Trackball::setDragPos(const s32 &x, const s32 &y)
+{
+	drag_pos = position2df(x, y);
+}
+
+void Trackball::animateNode(ISceneNode *node, u32 timeMs)
+{
+	if (!node)
+		return;
+
+	if (!is_moving)
+	{
+		if (is_clicked)
+		{
+			is_moving = true;
+			transform = node->getAbsoluteTransformation();
+			drag_start = drag_pos;
+		}
+	}
+	else
+	{
+		if (is_clicked)
+		{
+			matrix4 rotation;
+			quaternion quat;
+			vector3df start = getVector(drag_start);
+			vector3df end = getVector(drag_pos);
+			vector3df perp = start.crossProduct(end);
+			if (iszero(perp.getLength()))
+			{
+				quat.makeIdentity();
+			}
+			else
+			{
+				quat.X = perp.X;
+				quat.Y = perp.Y;
+				quat.Z = perp.Z;
+				quat.W = start.dotProduct(end);
+			}
+			quat.getMatrix(rotation);
+			rotation *= transform;
+			node->setRotation(rotation.getRotationDegrees());
+			node->updateAbsolutePosition();
+		}
+		else
+		{
+			is_moving = false;
+		}
+	}
+}

src/trackball.h

@@ -0,0 +1,33 @@
+#ifndef D_TRACKBALL_H
+#define D_TRACKBALL_H
+
+using namespace irr;
+using namespace core;
+using namespace scene;
+
+class Trackball : public ISceneNodeAnimator
+{
+public:
+	Trackball(const u32 &width, const u32 &height);
+	~Trackball(void) {}
+	void setBounds(const u32 &width, const u32 &height);
+	void setDragPos(const s32 &x, const s32 &y);
+	void click() { is_clicked = true; }
+	void release() { is_clicked = false; }
+	bool isClicked() const { return is_clicked; }
+	virtual void animateNode(ISceneNode *node, u32 timeMs);
+	virtual ISceneNodeAnimator *createClone(ISceneNode *node,
+		ISceneManager *newManager = 0) { return 0; }
+
+private:
+	vector3df getVector(const position2df &pos) const;
+
+	bool is_clicked;
+	bool is_moving;
+	position2df drag_start;
+	position2df drag_pos;
+	dimension2di screen;
+	matrix4 transform;
+};
+
+#endif // D_TRACKBALL_H

src/viewer.cpp

@@ -0,0 +1,640 @@
+#include <stdlib.h>
+#include <iostream>
+#include <sstream>
+#include <irrlicht.h>
+
+#include "config.h"
+#include "scene.h"
+#include "trackball.h"
+#include "gui.h"
+#include "dialog.h"
+#include "viewer.h"
+
+#define M_ZOOM_IN(fov) std::max(fov - DEGTORAD * 2, PI * 0.0125f)
+#define M_ZOOM_OUT(fov) std::min(fov + DEGTORAD * 2, PI * 0.5f)
+
+Viewer::Viewer(Config *conf) :
+	conf(conf),
+	device(0),
+	camera(0),
+	scene(0),
+	trackball(0),
+	gui(0),
+	animation(0)
+{}
+
+Viewer::~Viewer()
+{
+	if (scene)
+		scene->drop();
+	if (trackball)
+		delete trackball;
+	if (gui)
+		delete gui;
+	if (animation)
+		delete animation;
+}
+
+bool Viewer::run(IrrlichtDevice *irr_device)
+{
+	device = irr_device;
+	device->getFileSystem()->addFileArchive("../assets/");
+	device->getFileSystem()->addFileArchive("../media/");
+	device->getFileSystem()->changeWorkingDirectoryTo("../media/");
+	device->setEventReceiver(this);
+
+	IVideoDriver *driver = device->getVideoDriver();
+	ISceneManager *smgr = device->getSceneManager();
+	IGUIEnvironment *env = device->getGUIEnvironment();
+
+	screen = driver->getScreenSize();
+	trackball = new Trackball(screen.Width, screen.Height);
+	scene = new Scene(smgr->getRootSceneNode(), smgr, E_SCENE_ID);
+	scene->addAnimator(trackball);
+
+	gui = new GUI(device, conf);
+	gui->initMenu();
+	gui->initToolBar();
+
+	if (!scene->load(conf))
+		return false;
+
+	animation = new AnimState(env);
+	animation->load(scene->getNode(E_SCENE_ID_MODEL));
+	animation->setField(E_GUI_ID_ANIM_START, conf->getInt("anim_start"));
+	animation->setField(E_GUI_ID_ANIM_END, conf->getInt("anim_end"));
+	animation->setField(E_GUI_ID_ANIM_SPEED, conf->getInt("anim_speed"));
+	animation->setField(E_GUI_ID_ANIM_FRAME, conf->getInt("anim_start"));
+	scene->setAnimation(conf->getInt("anim_start"),
+		conf->getInt("anim_start"), conf->getInt("anim_speed"));
+
+	camera = smgr->addCameraSceneNode(0, vector3df(0,0,30), vector3df(0,0,0));
+	fov = camera->getFOV();
+	fov_home = fov;
+	jump_time = 0;
+
+	setCaptionFileName(conf->getCStr("model_mesh"));
+	setBackgroundColor(conf->getHex("bg_color"));
+	setProjection();
+
+	while (device->run())
+	{
+		resize();
+		driver->beginScene(true, true, bg_color);
+		smgr->drawAll();
+		env->drawAll();
+		driver->endScene();
+		animation->update(scene->getNode(E_SCENE_ID_MODEL));
+	}
+	return true;
+}
+
+void Viewer::resize()
+{
+	IVideoDriver *driver = device->getVideoDriver();
+	dimension2du dim = driver->getScreenSize();
+	if (screen == dim)
+		return;
+
+	const vector2di move = vector2di(dim.Width - screen.Width, 0);
+	gui->moveElement(E_GUI_ID_TOOLBOX_MODEL, move);
+	gui->moveElement(E_GUI_ID_ANIM_CTRL, move);
+
+	screen = dim;
+	trackball->setBounds(screen.Width, screen.Height);
+	camera->setAspectRatio((f32)screen.Width / (f32)screen.Height);
+	setProjection();
+}
+
+void Viewer::setProjection()
+{
+	f32 width = (f32)screen.Width * fov / 20.0f;
+	f32 height = (f32)screen.Height * fov / 20.0f;
+	ortho.buildProjectionMatrixOrthoLH(width, height, 1.0f, 1000.f);
+
+	if (conf->getBool("ortho"))
+		camera->setProjectionMatrix(ortho, true);
+	else
+		camera->setFOV(fov);
+}
+
+void Viewer::setBackgroundColor(const u32 &color)
+{
+	bg_color.color = color;
+	bg_color.setAlpha(255);
+}
+
+void Viewer::setCaptionFileName(const io::path &filename)
+{
+	io::IFileSystem *fs = device->getFileSystem();
+	stringw caption = fs->getFileBasename(filename) + L" - SAM-Viewer";
+	device->setWindowCaption(caption.c_str());
+}
+
+static inline std::string boolToString(bool b)
+{
+	return (b) ? "true" : "false";
+}
+
+static inline std::string vectorToString(vector3df v)
+{
+	std::ostringstream ss;
+	ss << v.X << "," << v.Y << "," << v.Z;
+	std::string str(ss.str());
+	return str;
+}
+
+bool Viewer::OnEvent(const SEvent &event)
+{
+	if (event.EventType == EET_GUI_EVENT)
+	{
+		if (event.GUIEvent.EventType == EGET_MENU_ITEM_SELECTED)
+		{
+			IGUIContextMenu *menu = (IGUIContextMenu*)event.GUIEvent.Caller;
+			s32 item = menu->getSelectedItem();
+			s32 id = menu->getItemCommandId(item);
+			IGUIEnvironment *env = device->getGUIEnvironment();
+			switch (id)
+			{
+			case E_GUI_ID_LOAD_MODEL_MESH:
+				env->addFileOpenDialog(L"Open main model file", true, 0,
+					E_GUI_ID_LOAD_MODEL_MESH);
+				break;
+			case E_GUI_ID_LOAD_WIELD_MESH:
+				env->addFileOpenDialog(L"Open wield model file", true, 0,
+					E_GUI_ID_LOAD_WIELD_MESH);
+				break;
+			case E_GUI_ID_ENABLE_WIELD:
+			{
+				ISceneNode *wield = scene->getNode(E_SCENE_ID_WIELD);
+				if (wield)
+				{
+					wield->setVisible(menu->isItemChecked(item));
+					conf->set("wield_show",
+						boolToString(menu->isItemChecked(item)));
+				}
+				break;
+			}
+			case E_GUI_ID_QUIT:
+				device->closeDevice();
+				break;
+			case E_GUI_ID_TEXTURES_DIALOG:
+				gui->showTexturesDialog();
+				break;
+			case E_GUI_ID_SETTINGS_DIALOG:
+				gui->showSettingsDialog();
+				break;
+			case E_GUI_ID_TOOLBOX_MODEL:
+			{
+				if (menu->isItemChecked(item))
+					gui->showToolBox(E_GUI_ID_TOOLBOX_MODEL);
+				else
+					gui->closeToolBox(E_GUI_ID_TOOLBOX_MODEL);
+				break;
+			}
+			case E_GUI_ID_TOOLBOX_WIELD:
+			{
+				if (menu->isItemChecked(item))
+					gui->showToolBox(E_GUI_ID_TOOLBOX_WIELD);
+				else
+					gui->closeToolBox(E_GUI_ID_TOOLBOX_WIELD);
+				break;
+			}
+			case E_GUI_ID_SHOW_GRID:
+				scene->setGridVisible(menu->isItemChecked(item));
+				menu->setItemEnabled(item + 1, menu->isItemChecked(item));
+				break;
+			case E_GUI_ID_SHOW_AXES:
+				scene->setAxesVisible(menu->isItemChecked(item));
+				break;
+			case E_GUI_ID_BILINEAR:
+				scene->setFilter(EMF_BILINEAR_FILTER,
+					menu->isItemChecked(item));
+					conf->set("bilinear",
+						boolToString(menu->isItemChecked(item)));
+				break;
+			case E_GUI_ID_TRILINEAR:
+				scene->setFilter(EMF_TRILINEAR_FILTER,
+					menu->isItemChecked(item));
+					conf->set("trilinear",
+						boolToString(menu->isItemChecked(item)));
+				break;
+			case E_GUI_ID_ANISOTROPIC:
+				scene->setFilter(EMF_ANISOTROPIC_FILTER,
+					menu->isItemChecked(item));
+					conf->set("anisotropic",
+						boolToString(menu->isItemChecked(item)));
+				break;
+			case E_GUI_ID_PERSPECTIVE:
+				menu->setItemChecked(item + 1, !menu->isItemChecked(item));
+				conf->set("ortho", boolToString(!menu->isItemChecked(item)));
+				setProjection();
+				break;
+			case E_GUI_ID_ORTHOGONAL:
+				menu->setItemChecked(item - 1, !menu->isItemChecked(item));
+				conf->set("ortho", boolToString(menu->isItemChecked(item)));
+				setProjection();
+				break;
+			case E_GUI_ID_BACK_FACE_CULL:
+				scene->setBackFaceCulling(menu->isItemChecked(item));
+				conf->set("backface_cull",
+					boolToString(menu->isItemChecked(item)));
+				break;
+			case E_GUI_ID_DEBUG_INFO:
+				scene->setDebugInfo(menu->isItemChecked(item));
+				conf->set("debug_info",
+					boolToString(menu->isItemChecked(item)));
+				break;
+			case E_DIALOG_ID_ABOUT:
+				gui->showAboutDialog();
+				break;
+			case E_GUI_ID_SAVE_CONFIG:
+			{
+				ISceneNode *model = scene->getNode(E_SCENE_ID_MODEL);
+				if (model)
+				{
+					conf->set("model_position",
+						vectorToString(model->getPosition()));
+					conf->set("model_rotation",
+						vectorToString(model->getRotation()));
+					conf->set("model_scale",
+						std::to_string(model->getScale().Y * 100));
+					conf->set("model_material",
+						std::to_string(model->getMaterial(0).MaterialType));
+				}
+				ISceneNode *wield = scene->getNode(E_SCENE_ID_WIELD);
+				if (wield)
+				{
+					conf->set("wield_position",
+						vectorToString(wield->getPosition()));
+					conf->set("wield_rotation",
+						vectorToString(wield->getRotation()));
+					conf->set("wield_scale",
+						std::to_string(wield->getScale().Y * 100));
+					conf->set("wield_material",
+						std::to_string(wield->getMaterial(0).MaterialType));
+				}
+				conf->set("anim_start",
+					std::to_string(animation->getField(E_GUI_ID_ANIM_START)));
+				conf->set("anim_end",
+					std::to_string(animation->getField(E_GUI_ID_ANIM_END)));
+				conf->set("anim_speed",
+					std::to_string(animation->getField(E_GUI_ID_ANIM_SPEED)));
+				conf->save();
+				break;
+			}
+			default:
+				break;
+			}
+		}
+		else if (event.GUIEvent.EventType == EGET_FILE_SELECTED)
+		{
+			IGUIFileOpenDialog *dialog =
+				(IGUIFileOpenDialog*)event.GUIEvent.Caller;
+
+			stringc fn = stringc(dialog->getFileName()).c_str();
+			if (!fn.empty())
+			{			
+				s32 id = dialog->getID();
+				switch (id)
+				{
+				case E_GUI_ID_LOAD_MODEL_MESH:
+				{
+					if (scene->loadModelMesh(fn))
+					{
+						ISceneNode *model = scene->getNode(E_SCENE_ID_MODEL);
+						if (model)
+						{
+							animation->load(model);
+							setCaptionFileName(fn);
+							gui->reloadToolBox(E_GUI_ID_TOOLBOX_MODEL);
+							conf->set("model_mesh", fn.c_str());
+						}
+					}
+					break;
+				}
+				case E_GUI_ID_LOAD_WIELD_MESH:
+				{
+					if (scene->loadWieldMesh(fn))
+					{
+						gui->reloadToolBox(E_GUI_ID_TOOLBOX_WIELD);
+						conf->set("wield_mesh", fn.c_str());
+					}
+					break;
+				}
+				default:
+					break;
+				}
+			}
+			gui->setFocused(false);
+		}
+		else if (event.GUIEvent.EventType == EGET_FILE_CHOOSE_DIALOG_CANCELLED)
+		{
+			gui->setFocused(false);
+		}
+		else if (event.GUIEvent.EventType == EGET_ELEMENT_CLOSED)
+		{
+			IGUIContextMenu *menu =
+				(IGUIContextMenu*)gui->getElement(E_GUI_ID_MENU);
+			if (menu)
+			{
+				s32 id = event.GUIEvent.Caller->getID();
+				if (id == E_GUI_ID_TOOLBOX_MODEL)
+					menu->getSubMenu(2)->setItemChecked(0, false);
+				else if (id == E_GUI_ID_TOOLBOX_WIELD)
+					menu->getSubMenu(2)->setItemChecked(1, false);
+			}
+			gui->setFocused(false);
+		}
+		else if (event.GUIEvent.EventType == EGET_BUTTON_CLICKED)
+		{
+			s32 id = event.GUIEvent.Caller->getID();
+			switch (id)
+			{
+			case E_GUI_ID_SKIP_REV:
+				scene->setAnimation(
+					animation->getField(E_GUI_ID_ANIM_START),
+					animation->getField(E_GUI_ID_ANIM_START),
+					animation->getField(E_GUI_ID_ANIM_SPEED));
+				animation->setState(E_ANIM_STATE_PAUSED);
+				gui->setFocused(false);
+				break;
+			case E_GUI_ID_PLAY_REV:
+				scene->setAnimation(
+					animation->getField(E_GUI_ID_ANIM_START),
+					animation->getField(E_GUI_ID_ANIM_END),
+					-animation->getField(E_GUI_ID_ANIM_SPEED));
+				animation->setState(E_ANIM_STATE_PLAY_REV);
+				gui->setFocused(false);
+				break;
+			case E_GUI_ID_PAUSE:
+				scene->setAnimation(
+					animation->getFrame(),
+					animation->getFrame(),
+					animation->getField(E_GUI_ID_ANIM_SPEED));
+				animation->setState(E_ANIM_STATE_PAUSED);
+				gui->setFocused(false);
+				break;
+			case E_GUI_ID_PLAY_FWD:
+				scene->setAnimation(
+					animation->getField(E_GUI_ID_ANIM_START),
+					animation->getField(E_GUI_ID_ANIM_END),
+					animation->getField(E_GUI_ID_ANIM_SPEED));
+				animation->setState(E_ANIM_STATE_PLAY_FWD);
+				gui->setFocused(false);
+				break;
+			case E_GUI_ID_SKIP_FWD:
+				scene->setAnimation(
+					animation->getField(E_GUI_ID_ANIM_END),
+					animation->getField(E_GUI_ID_ANIM_END),
+					animation->getField(E_GUI_ID_ANIM_SPEED));
+				animation->setState(E_ANIM_STATE_PAUSED);
+				gui->setFocused(false);
+				break;
+			case E_DIALOG_ID_SETTINGS_OK:
+				event.GUIEvent.Caller->getParent()->getParent()->remove();
+				gui->setFocused(false);
+				setBackgroundColor(conf->getHex("bg_color"));
+				scene->setGridColor(conf->getHex("grid_color"));
+				scene->setAttachment();
+				scene->setDebugInfo(conf->getBool("debug_info"));
+				break;
+			case E_DIALOG_ID_SETTINGS_CANCEL:
+				event.GUIEvent.Caller->getParent()->getParent()->remove();
+				gui->setFocused(false);
+				break;
+			case E_DIALOG_ID_ABOUT_OK:
+			case E_DIALOG_ID_TEXTURES_OK:
+			case E_DIALOG_ID_TEXTURES_CANCEL:
+				event.GUIEvent.Caller->getParent()->getParent()->remove();
+				gui->setFocused(false);
+				break;
+			default:
+				break;
+			}
+		}
+		else if (event.GUIEvent.EventType == EGET_SPINBOX_CHANGED)
+		{
+			s32 id = event.GUIEvent.Caller->getID();
+			switch (id)
+			{
+			case E_GUI_ID_ANIM_START:
+			case E_GUI_ID_ANIM_END:
+			{
+				if (animation->getState() != E_ANIM_STATE_PAUSED)
+				{
+					IAnimatedMeshSceneNode *model = (IAnimatedMeshSceneNode*)
+						scene->getNode(E_SCENE_ID_MODEL);
+					scene->setAnimation(
+						animation->getField(E_GUI_ID_ANIM_START),
+						animation->getField(E_GUI_ID_ANIM_END),
+						model->getAnimationSpeed());
+				}
+				break;
+			}
+			case E_GUI_ID_ANIM_SPEED:
+			{
+				IAnimatedMeshSceneNode *model = (IAnimatedMeshSceneNode*)
+					scene->getNode(E_SCENE_ID_MODEL);
+				s32 speed = animation->getField(E_GUI_ID_ANIM_SPEED);
+				if (animation->getState() == E_ANIM_STATE_PLAY_REV)
+					speed = -speed;
+
+				model->setAnimationSpeed(speed);
+				break;
+			}
+			case E_GUI_ID_ANIM_FRAME:
+			{
+				if (animation->getState() == E_ANIM_STATE_PAUSED)
+				{
+					u32 frame = animation->getField(E_GUI_ID_ANIM_FRAME);
+					scene->setAnimation(frame, frame,
+						animation->getField(E_GUI_ID_ANIM_SPEED));
+				}
+				break;
+			}
+			default:
+				break;
+			}
+		}
+		else if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUS_LOST)
+		{
+			gui->setFocused(false);
+		}
+		else if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUSED)
+		{
+			gui->setFocused(true);
+			trackball->release();
+		}
+	}
+	else if (event.EventType == EET_KEY_INPUT_EVENT &&
+		event.KeyInput.PressedDown)
+	{
+		switch (event.KeyInput.Key)
+		{
+		case KEY_HOME:
+		{
+			scene->setRotation(vector3df(0,0,0));
+			fov = fov_home;
+			setProjection();
+			break;
+		}
+		case KEY_SPACE:
+		{
+			u32 now_time = device->getTimer()->getTime() + 1000;
+			if (jump_time + 800 < now_time)
+			{
+				jump_time = now_time;
+				scene->jump();
+			}
+			break;
+		}
+		case KEY_LEFT:
+			scene->rotate(E_SCENE_AXIS_Y, 15);
+			break;
+		case KEY_RIGHT:
+			scene->rotate(E_SCENE_AXIS_Y, -15);
+			break;
+		case KEY_UP:
+			scene->rotate(E_SCENE_AXIS_X, -15);
+			break;
+		case KEY_DOWN:
+			scene->rotate(E_SCENE_AXIS_X, 15);
+			break;
+		case KEY_KEY_Z:
+			scene->rotate(E_SCENE_AXIS_Z, -15);
+			break;
+		case KEY_KEY_X:
+			scene->rotate(E_SCENE_AXIS_Z, 15);
+			break;
+		case KEY_PLUS:
+			fov = M_ZOOM_IN(fov);
+			setProjection();
+			break;
+		case KEY_MINUS:
+			fov = M_ZOOM_OUT(fov);
+			setProjection();
+			break;
+		case KEY_F5:
+			scene->refresh();
+			break;
+		default:
+			break;
+		}
+	}
+	else if (event.EventType == EET_MOUSE_INPUT_EVENT && !gui->getFocused())
+	{
+		switch (event.MouseInput.Event)
+		{
+		case EMIE_LMOUSE_LEFT_UP:
+			trackball->release();
+			break;
+		case EMIE_MOUSE_MOVED:
+		{
+			if (event.MouseInput.isLeftPressed() && !trackball->isClicked())
+				trackball->click();
+
+			trackball->setDragPos(event.MouseInput.X, event.MouseInput.Y);
+			break;
+
+		}
+		case EMIE_MOUSE_WHEEL:
+		{
+			if (event.MouseInput.Wheel < 0)
+				fov = M_ZOOM_OUT(fov);
+			else
+				fov = M_ZOOM_IN(fov);
+			setProjection();
+			break;
+		}
+		default:
+			break;
+		}
+	}
+	return false;
+}
+
+AnimState::AnimState(IGUIEnvironment *env) :
+	env(env),
+	frame(0),
+	max(0),
+	state(E_ANIM_STATE_PAUSED)
+{}
+
+void AnimState::load(ISceneNode *node)
+{
+	IAnimatedMeshSceneNode *model =	(IAnimatedMeshSceneNode*)node;
+	if (!model)
+		return;
+
+	IGUIToolBar *toolbar = getToolBar();
+	if (!toolbar)
+		return;
+
+	max = model->getEndFrame();
+	model->setFrameLoop(0, 0);
+	state = E_ANIM_STATE_PAUSED;
+
+	setField(E_GUI_ID_ANIM_START, 0);
+	setField(E_GUI_ID_ANIM_END, max);
+	setField(E_GUI_ID_ANIM_FRAME, 0);
+
+	bool enabled = (max > 0);
+	const list<IGUIElement*> &children = toolbar->getChildren();
+	list<IGUIElement*>::ConstIterator iter = children.begin();
+	while (iter != children.end())
+	{
+		if ((*iter)->getID() == E_GUI_ID_ANIM_CTRL)
+		{
+			AnimCtrl *anim = (AnimCtrl*)(*iter);
+			anim->reset(enabled);
+			if (enabled)
+			{
+				IGUIButton *button =
+					(IGUIButton*)anim->getElementFromId(E_GUI_ID_PAUSE, true);
+				button->setPressed(true);
+			}
+		}
+		else if ((*iter)->getType() != EGUIET_STATIC_TEXT)
+		{
+			(*iter)->setEnabled(enabled);
+		}
+		++iter;
+	}
+}
+
+void AnimState::update(ISceneNode *node)
+{
+	IAnimatedMeshSceneNode *model =	(IAnimatedMeshSceneNode*)node;
+	frame = model->getFrameNr();
+	setField(E_GUI_ID_ANIM_FRAME, frame);
+}
+
+IGUIToolBar *AnimState::getToolBar()
+{
+	IGUIElement *root = env->getRootGUIElement();
+	return (IGUIToolBar*)root->getElementFromId(E_GUI_ID_TOOLBAR, true);
+}
+
+u32 AnimState::getField(s32 id)
+{
+	IGUIToolBar *toolbar = getToolBar();
+	if (!toolbar)
+		return 0;
+
+	IGUISpinBox *spin;
+	spin = (IGUISpinBox*)toolbar->getElementFromId(id, true);
+	return spin->getValue();
+}
+
+void AnimState::setField(s32 id, const u32 &value)
+{
+	IGUIToolBar *toolbar = getToolBar();
+	if (!toolbar)
+		return;
+
+	IGUISpinBox *spin;
+	spin = (IGUISpinBox*)toolbar->getElementFromId(id, true);
+	spin->setRange(0, max);
+	spin->setValue(std::min(value, max));
+}

src/viewer.h

@@ -0,0 +1,78 @@
+#ifndef D_VIEWER_H
+#define D_VIEWER_H
+
+using namespace irr;
+using namespace core;
+using namespace scene;
+using namespace gui;
+using namespace video;
+
+class Config;
+class Scene;
+class Trackball;
+class GUI;
+
+enum
+{
+	E_ANIM_STATE_PLAY_FWD,
+	E_ANIM_STATE_PLAY_REV,
+	E_ANIM_STATE_PAUSED
+};
+
+enum
+{
+	E_PROJECTION_PERSPECTIVE,
+	E_PROJECTION_ORTHOGRAPHIC
+};
+
+class AnimState
+{
+public:
+	AnimState(IGUIEnvironment *env);
+	void load(ISceneNode *node);
+	void update(ISceneNode *node);
+	void setField(s32 id, const u32 &value);
+	void setState(s32 id) { state = id; }
+	u32 getField(s32 id);
+	u32 getFrame() { return frame; }
+	s32 getState() { return state; }
+
+private:
+	IGUIToolBar *getToolBar();
+
+	IGUIEnvironment *env;
+	u32 frame;
+	u32 max;
+	s32 state;
+};
+
+class Viewer : public IEventReceiver
+{
+public:
+	Viewer(Config *conf);
+	~Viewer();
+	bool run(IrrlichtDevice *irr_device);
+	virtual bool OnEvent(const SEvent &event);
+
+private:
+	void resize();
+	void setProjection();
+	void setBackgroundColor(const u32 &color);
+	void setCaptionFileName(const io::path &filename);
+
+	Config *conf;
+	IrrlichtDevice *device;
+	ICameraSceneNode *camera;
+	Scene *scene;
+	Trackball *trackball;
+	GUI *gui;
+	AnimState *animation;
+	matrix4 ortho;
+	f32 fov;
+	f32 fov_home;
+	dimension2du screen;
+	SColor bg_color;
+	u32 jump_time;
+};
+
+#endif // D_VIEWER_H