325 lines
9.4 KiB
C++
325 lines
9.4 KiB
C++
// Copyright (C) 2002-2008 Nikolaus Gebhardt
|
|
// This file is part of the "Irrlicht Engine".
|
|
// For conditions of distribution and use, see copyright notice in irrlicht.h
|
|
//
|
|
// created by Dean Wadsworth aka Varmint Dec 31 2007
|
|
|
|
#include "CVolumeLightSceneNode.h"
|
|
#include "IVideoDriver.h"
|
|
#include "ISceneManager.h"
|
|
#include "S3DVertex.h"
|
|
#include "os.h"
|
|
|
|
namespace irr
|
|
{
|
|
namespace scene
|
|
{
|
|
|
|
//! constructor
|
|
CVolumeLightSceneNode::CVolumeLightSceneNode(ISceneNode* parent, ISceneManager* mgr,
|
|
s32 id, const u32 subdivU, const u32 subdivV,
|
|
const video::SColor foot,
|
|
const video::SColor tail,
|
|
const core::vector3df& position,
|
|
const core::vector3df& rotation, const core::vector3df& scale)
|
|
: IVolumeLightSceneNode(parent, mgr, id, position, rotation, scale),
|
|
LPDistance(8.0f), SubdivideU(subdivU), SubdivideV(subdivV),
|
|
FootColour(foot), TailColour(tail),
|
|
LightDimensions(core::vector3df(1.0f, 1.2f, 1.0f))
|
|
{
|
|
#ifdef _DEBUG
|
|
setDebugName("CVolumeLightSceneNode");
|
|
#endif
|
|
|
|
Buffer = new SMeshBuffer();
|
|
if (Buffer)
|
|
{
|
|
Buffer->setHardwareMappingHint(EHM_STATIC);
|
|
constructLight();
|
|
}
|
|
}
|
|
|
|
|
|
CVolumeLightSceneNode::~CVolumeLightSceneNode()
|
|
{
|
|
if (Buffer)
|
|
Buffer->drop();
|
|
}
|
|
|
|
|
|
void CVolumeLightSceneNode::addToBuffer(const video::S3DVertex& v)
|
|
{
|
|
const s32 tnidx = Buffer->Vertices.linear_reverse_search(v);
|
|
const bool alreadyIn = (tnidx != -1);
|
|
u16 nidx = (u16)tnidx;
|
|
if (!alreadyIn) {
|
|
nidx = (u16)Buffer->Vertices.size();
|
|
Buffer->Indices.push_back(nidx);
|
|
Buffer->Vertices.push_back(v);
|
|
} else
|
|
Buffer->Indices.push_back(nidx);
|
|
}
|
|
|
|
|
|
void CVolumeLightSceneNode::constructLight()
|
|
{
|
|
const core::vector3df lightPoint(0, -(LPDistance*LightDimensions.Y), 0);
|
|
const f32 ax = LightDimensions.X * 0.5f; // X Axis
|
|
const f32 az = LightDimensions.Z * 0.5f; // Z Axis
|
|
|
|
Buffer->Vertices.clear();
|
|
Buffer->Vertices.reallocate(6+12*(SubdivideU+SubdivideV));
|
|
Buffer->Indices.clear();
|
|
Buffer->Indices.reallocate(6+12*(SubdivideU+SubdivideV));
|
|
//draw the bottom foot.. the glowing region
|
|
addToBuffer(video::S3DVertex(-ax, 0, az, 0,0,0, FootColour, 0, 1));
|
|
addToBuffer(video::S3DVertex(ax , 0, az, 0,0,0, FootColour, 1, 1));
|
|
addToBuffer(video::S3DVertex(ax , 0,-az, 0,0,0, FootColour, 1, 0));
|
|
|
|
addToBuffer(video::S3DVertex(ax , 0,-az, 0,0,0, FootColour, 1, 0));
|
|
addToBuffer(video::S3DVertex(-ax, 0,-az, 0,0,0, FootColour, 0, 0));
|
|
addToBuffer(video::S3DVertex(-ax, 0, az, 0,0,0, FootColour, 0, 1));
|
|
|
|
f32 tu = 0.f;
|
|
const f32 tuStep = 1.f/SubdivideU;
|
|
f32 bx = -ax;
|
|
const f32 bxStep = LightDimensions.X * tuStep;
|
|
// Slices in X/U space
|
|
for (u32 i = 0; i <= SubdivideU; ++i)
|
|
{
|
|
// These are the two endpoints for a slice at the foot
|
|
core::vector3df end1(bx, 0.0f, -az);
|
|
core::vector3df end2(bx, 0.0f, az);
|
|
|
|
end1 -= lightPoint; // get a vector from point to lightsource
|
|
end1.normalize(); // normalize vector
|
|
end1 *= LightDimensions.Y; // multiply it out by shootlength
|
|
|
|
end1.X += bx; // Add the original point location to the vector
|
|
end1.Z -= az;
|
|
|
|
// Do it again for the other point.
|
|
end2 -= lightPoint;
|
|
end2.normalize();
|
|
end2 *= LightDimensions.Y;
|
|
|
|
end2.X += bx;
|
|
end2.Z += az;
|
|
|
|
addToBuffer(video::S3DVertex(bx , 0, az, 0,0,0, FootColour, tu, 1));
|
|
addToBuffer(video::S3DVertex(bx , 0, -az, 0,0,0, FootColour, tu, 0));
|
|
addToBuffer(video::S3DVertex(end2.X , end2.Y, end2.Z, 0,0,0, TailColour, tu, 1));
|
|
|
|
addToBuffer(video::S3DVertex(bx , 0, -az, 0,0,0, FootColour, tu, 0));
|
|
addToBuffer(video::S3DVertex(end1.X , end1.Y, end1.Z, 0,0,0, TailColour, tu, 0));
|
|
addToBuffer(video::S3DVertex(end2.X , end2.Y, end2.Z, 0,0,0, TailColour, tu, 1));
|
|
|
|
//back side
|
|
addToBuffer(video::S3DVertex(-end2.X , end2.Y, -end2.Z, 0,0,0, TailColour, tu, 1));
|
|
addToBuffer(video::S3DVertex(-bx , 0, -az, 0,0,0, FootColour, tu, 1));
|
|
addToBuffer(video::S3DVertex(-bx , 0, az, 0,0,0, FootColour, tu, 0));
|
|
|
|
addToBuffer(video::S3DVertex(-bx , 0, az, 0,0,0, FootColour, tu, 0));
|
|
addToBuffer(video::S3DVertex(-end1.X , end1.Y, -end1.Z, 0,0,0, TailColour, tu, 0));
|
|
addToBuffer(video::S3DVertex(-end2.X , end2.Y, -end2.Z, 0,0,0, TailColour, tu, 1));
|
|
tu += tuStep;
|
|
bx += bxStep;
|
|
}
|
|
|
|
f32 tv = 0.f;
|
|
const f32 tvStep = 1.f/SubdivideV;
|
|
f32 bz = -az;
|
|
const f32 bzStep = LightDimensions.Z * tvStep;
|
|
// Slices in Z/V space
|
|
for(u32 i = 0; i <= SubdivideV; ++i)
|
|
{
|
|
// These are the two endpoints for a slice at the foot
|
|
core::vector3df end1(-ax, 0.0f, bz);
|
|
core::vector3df end2(ax, 0.0f, bz);
|
|
|
|
end1 -= lightPoint; // get a vector from point to lightsource
|
|
end1.normalize(); // normalize vector
|
|
end1 *= LightDimensions.Y; // multiply it out by shootlength
|
|
|
|
end1.X -= ax; // Add the original point location to the vector
|
|
end1.Z += bz;
|
|
|
|
// Do it again for the other point.
|
|
end2 -= lightPoint;
|
|
end2.normalize();
|
|
end2 *= LightDimensions.Y;
|
|
|
|
end2.X += ax;
|
|
end2.Z += bz;
|
|
|
|
addToBuffer(video::S3DVertex(-ax , 0, bz, 0,0,0, FootColour, 0, tv));
|
|
addToBuffer(video::S3DVertex(ax , 0, bz, 0,0,0, FootColour, 1, tv));
|
|
addToBuffer(video::S3DVertex(end2.X , end2.Y, end2.Z, 0,0,0, TailColour, 1, tv));
|
|
|
|
addToBuffer(video::S3DVertex(end2.X , end2.Y, end2.Z, 0,0,0, TailColour, 1, tv));
|
|
addToBuffer(video::S3DVertex(end1.X , end1.Y, end1.Z, 0,0,0, TailColour, 0, tv));
|
|
addToBuffer(video::S3DVertex(-ax , 0, bz, 0,0,0, FootColour, 0, tv));
|
|
|
|
//back side
|
|
addToBuffer(video::S3DVertex(ax , 0, -bz, 0,0,0, FootColour, 0, tv));
|
|
addToBuffer(video::S3DVertex(-ax , 0, -bz, 0,0,0, FootColour, 1, tv));
|
|
addToBuffer(video::S3DVertex(-end2.X , end2.Y, -end2.Z, 0,0,0, TailColour, 1, tv));
|
|
|
|
addToBuffer(video::S3DVertex(-end2.X , end2.Y, -end2.Z, 0,0,0, TailColour, 1, tv));
|
|
addToBuffer(video::S3DVertex(-end1.X , end1.Y, -end1.Z, 0,0,0, TailColour, 0, tv));
|
|
addToBuffer(video::S3DVertex(ax , 0, -bz, 0,0,0, FootColour, 0, tv));
|
|
tv += tvStep;
|
|
bz += bzStep;
|
|
}
|
|
|
|
Buffer->recalculateBoundingBox();
|
|
|
|
Buffer->Material.MaterialType = video::EMT_ONETEXTURE_BLEND;
|
|
Buffer->Material.MaterialTypeParam = pack_texureBlendFunc( video::EBF_SRC_COLOR, video::EBF_SRC_ALPHA, video::EMFN_MODULATE_1X );
|
|
|
|
Buffer->Material.Lighting = false;
|
|
Buffer->Material.ZWriteEnable = false;
|
|
|
|
Buffer->setDirty(EBT_VERTEX_AND_INDEX);
|
|
}
|
|
|
|
|
|
//! renders the node.
|
|
void CVolumeLightSceneNode::render()
|
|
{
|
|
if (!Buffer)
|
|
return;
|
|
|
|
video::IVideoDriver* driver = SceneManager->getVideoDriver();
|
|
driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
|
|
|
|
driver->setMaterial(Buffer->Material);
|
|
driver->drawMeshBuffer(Buffer);
|
|
}
|
|
|
|
|
|
//! returns the axis aligned bounding box of this node
|
|
const core::aabbox3d<f32>& CVolumeLightSceneNode::getBoundingBox() const
|
|
{
|
|
return Buffer->BoundingBox;
|
|
}
|
|
|
|
|
|
void CVolumeLightSceneNode::OnRegisterSceneNode()
|
|
{
|
|
if (IsVisible)
|
|
{
|
|
SceneManager->registerNodeForRendering(this, ESNRP_TRANSPARENT);
|
|
}
|
|
ISceneNode::OnRegisterSceneNode();
|
|
}
|
|
|
|
|
|
//! returns the material based on the zero based index i. To get the amount
|
|
//! of materials used by this scene node, use getMaterialCount().
|
|
//! This function is needed for inserting the node into the scene hirachy on a
|
|
//! optimal position for minimizing renderstate changes, but can also be used
|
|
//! to directly modify the material of a scene node.
|
|
video::SMaterial& CVolumeLightSceneNode::getMaterial(u32 i)
|
|
{
|
|
return Buffer->Material;
|
|
}
|
|
|
|
|
|
//! returns amount of materials used by this scene node.
|
|
u32 CVolumeLightSceneNode::getMaterialCount() const
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
|
|
void CVolumeLightSceneNode::setSubDivideU (const u32 inU)
|
|
{
|
|
SubdivideU = inU;
|
|
constructLight();
|
|
}
|
|
|
|
|
|
void CVolumeLightSceneNode::setSubDivideV (const u32 inV)
|
|
{
|
|
SubdivideV = inV;
|
|
constructLight();
|
|
}
|
|
|
|
|
|
void CVolumeLightSceneNode::setFootColour(const video::SColor inColouf)
|
|
{
|
|
FootColour = inColouf;
|
|
constructLight();
|
|
}
|
|
|
|
|
|
void CVolumeLightSceneNode::setTailColour(const video::SColor inColouf)
|
|
{
|
|
TailColour = inColouf;
|
|
constructLight();
|
|
}
|
|
|
|
|
|
//! Writes attributes of the scene node.
|
|
void CVolumeLightSceneNode::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options) const
|
|
{
|
|
ISceneNode::serializeAttributes(out, options);
|
|
|
|
out->addFloat("lpDistance", LPDistance);
|
|
out->addInt("subDivideU", SubdivideU);
|
|
out->addInt("subDivideV", SubdivideV);
|
|
|
|
out->addColor("footColour", FootColour);
|
|
out->addColor("tailColour", TailColour);
|
|
|
|
out->addVector3d("lightDimension", LightDimensions);
|
|
}
|
|
|
|
|
|
//! Reads attributes of the scene node.
|
|
void CVolumeLightSceneNode::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options)
|
|
{
|
|
LPDistance = in->getAttributeAsFloat("lpDistance");
|
|
LPDistance = core::max_(LPDistance, 8.0f);
|
|
|
|
SubdivideU = in->getAttributeAsInt("subDivideU");
|
|
SubdivideU = core::max_(SubdivideU, 1u);
|
|
|
|
SubdivideV = in->getAttributeAsInt("subDivideV");
|
|
SubdivideV = core::max_(SubdivideV, 1u);
|
|
|
|
FootColour = in->getAttributeAsColor("footColour");
|
|
TailColour = in->getAttributeAsColor("tailColour");
|
|
|
|
LightDimensions = in->getAttributeAsVector3d("lightDimension");
|
|
|
|
constructLight();
|
|
|
|
ISceneNode::deserializeAttributes(in, options);
|
|
}
|
|
|
|
|
|
//! Creates a clone of this scene node and its children.
|
|
ISceneNode* CVolumeLightSceneNode::clone(ISceneNode* newParent, ISceneManager* newManager)
|
|
{
|
|
if (!newParent)
|
|
newParent = Parent;
|
|
if (!newManager)
|
|
newManager = SceneManager;
|
|
|
|
CVolumeLightSceneNode* nb = new CVolumeLightSceneNode(newParent,
|
|
newManager, ID, SubdivideU, SubdivideV, FootColour, TailColour, RelativeTranslation);
|
|
|
|
nb->cloneMembers(this, newManager);
|
|
nb->Buffer->Material = Buffer->Material;
|
|
|
|
nb->drop();
|
|
return nb;
|
|
}
|
|
|
|
|
|
} // end namespace scene
|
|
} // end namespace irr
|
|
|