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irrlicht/source/Irrlicht/C3DSMeshFileLoader.cpp

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// Copyright (C) 2002-2007 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#include "IrrCompileConfig.h"
#ifdef _IRR_COMPILE_WITH_3DS_LOADER_
#include "C3DSMeshFileLoader.h"
#include "os.h"
#include "SMeshBuffer.h"
#include "SAnimatedMesh.h"
#include "IReadFile.h"
namespace irr
{
namespace scene
{
// Primary chunk
const u16 C3DS_MAIN3DS = 0x4D4D;
// Main Chunks
const u16 C3DS_EDIT3DS = 0x3D3D;
const u16 C3DS_KEYF3DS = 0xB000;
const u16 C3DS_VERSION = 0x0002;
const u16 C3DS_MESHVERSION = 0x3D3E;
// sub chunks of C3DS_EDIT3DS
const u16 C3DS_EDIT_MATERIAL = 0xAFFF;
const u16 C3DS_EDIT_OBJECT = 0x4000;
// sub chunks of C3DS_EDIT_MATERIAL
const u16 C3DS_MATNAME = 0xA000;
const u16 C3DS_MATAMBIENT = 0xA010;
const u16 C3DS_MATDIFFUSE = 0xA020;
const u16 C3DS_MATSPECULAR = 0xA030;
const u16 C3DS_MATSHININESS = 0xA040;
const u16 C3DS_MATSHIN2PCT = 0xA041;
const u16 C3DS_TRANSPARENCY = 0xA050;
const u16 C3DS_TWO_SIDE = 0xA081;
const u16 C3DS_WIRE = 0xA085;
const u16 C3DS_SHADING = 0xA100;
const u16 C3DS_MATTEXMAP = 0xA200;
const u16 C3DS_MATSPECMAP = 0xA204;
const u16 C3DS_MATOPACMAP = 0xA210;
const u16 C3DS_MATREFLMAP = 0xA220;
const u16 C3DS_MATBUMPMAP = 0xA230;
const u16 C3DS_MATMAPFILE = 0xA300;
const u16 C3DS_MAT_TEXTILING = 0xA351;
const u16 C3DS_MAT_USCALE = 0xA354;
const u16 C3DS_MAT_VSCALE = 0xA356;
const u16 C3DS_MAT_UOFFSET = 0xA358;
const u16 C3DS_MAT_VOFFSET = 0xA35A;
// subs of C3DS_EDIT_OBJECT
const u16 C3DS_OBJTRIMESH = 0x4100;
// subs of C3DS_OBJTRIMESH
const u16 C3DS_TRIVERT = 0x4110;
const u16 C3DS_POINTFLAGARRAY= 0x4111;
const u16 C3DS_TRIFACE = 0x4120;
const u16 C3DS_TRIFACEMAT = 0x4130;
const u16 C3DS_TRIUV = 0x4140;
const u16 C3DS_TRISMOOTH = 0x4150;
const u16 C3DS_TRIMATRIX = 0x4160;
const u16 C3DS_MESHCOLOR = 0x4165;
const u16 C3DS_DIRECT_LIGHT = 0x4600;
const u16 C3DS_DL_INNER_RANGE= 0x4659;
const u16 C3DS_DL_OUTER_RANGE= 0x465A;
const u16 C3DS_DL_MULTIPLIER = 0x465B;
const u16 C3DS_CAMERA = 0x4700;
const u16 C3DS_CAM_SEE_CONE = 0x4710;
const u16 C3DS_CAM_RANGES = 0x4720;
// subs of C3DS_KEYF3DS
const u16 C3DS_KF_HDR = 0xB00A;
const u16 C3DS_AMBIENT_TAG = 0xB001;
const u16 C3DS_OBJECT_TAG = 0xB002;
const u16 C3DS_CAMERA_TAG = 0xB003;
const u16 C3DS_TARGET_TAG = 0xB004;
const u16 C3DS_LIGHTNODE_TAG = 0xB005;
const u16 C3DS_KF_SEG = 0xB008;
const u16 C3DS_KF_CURTIME = 0xB009;
const u16 C3DS_KF_NODE_HDR = 0xB010;
const u16 C3DS_PIVOTPOINT = 0xB013;
const u16 C3DS_BOUNDBOX = 0xB014;
const u16 C3DS_POS_TRACK_TAG = 0xB020;
const u16 C3DS_ROT_TRACK_TAG = 0xB021;
const u16 C3DS_SCL_TRACK_TAG = 0xB022;
const u16 C3DS_NODE_ID = 0xB030;
// different color chunk types
const u16 C3DS_COL_RGB = 0x0010;
const u16 C3DS_COL_TRU = 0x0011;
const u16 C3DS_COL_LIN_24 = 0x0012;
const u16 C3DS_COL_LIN_F = 0x0013;
// percentage chunk types
const u16 C3DS_PERCENTAGE_I = 0x0030;
const u16 C3DS_PERCENTAGE_F = 0x0031;
//! Constructor
C3DSMeshFileLoader::C3DSMeshFileLoader(IMeshManipulator* manip,io::IFileSystem* fs, video::IVideoDriver* driver)
: FileSystem(fs), Driver(driver), Vertices(0), Indices(0), SmoothingGroups(0), TCoords(0),
CountVertices(0), CountFaces(0), CountTCoords(0), Mesh(0), Manipulator(manip)
{
TransformationMatrix.makeIdentity();
if (FileSystem)
FileSystem->grab();
if (Driver)
Driver->grab();
}
//! destructor
C3DSMeshFileLoader::~C3DSMeshFileLoader()
{
cleanUp();
if (FileSystem)
FileSystem->drop();
if (Driver)
Driver->drop();
if (Mesh)
Mesh->drop();
}
//! returns true if the file maybe is able to be loaded by this class
//! based on the file extension (e.g. ".bsp")
bool C3DSMeshFileLoader::isALoadableFileExtension(const c8* filename)
{
return strstr(filename, ".3ds")!=0;
}
//! creates/loads an animated mesh from the file.
//! \return Pointer to the created mesh. Returns 0 if loading failed.
//! If you no longer need the mesh, you should call IAnimatedMesh::drop().
//! See IReferenceCounted::drop() for more information.
IAnimatedMesh* C3DSMeshFileLoader::createMesh(io::IReadFile* file)
{
ChunkData data;
readChunkData(file, data);
if (data.header.id != C3DS_MAIN3DS )
return 0;
CurrentMaterial.clear();
Materials.clear();
MeshBufferNames.clear();
cleanUp();
if (Mesh)
Mesh->drop();
Mesh = new SMesh();
if (readChunk(file, &data))
{
// success
SAnimatedMesh* am = new SAnimatedMesh();
am->Type = EAMT_3DS;
for (u32 i=0; i<Mesh->getMeshBufferCount(); ++i)
{
SMeshBuffer* mb = ((SMeshBuffer*)Mesh->getMeshBuffer(i));
// drop empty buffers
if (mb->getIndexCount() == 0 || mb->getVertexCount() == 0)
{
Mesh->MeshBuffers.erase(i--);
mb->drop();
}
else
mb->recalculateBoundingBox();
}
Mesh->recalculateBoundingBox();
am->addMesh(Mesh);
am->recalculateBoundingBox();
Mesh->drop();
Mesh = 0;
return am;
}
Mesh->drop();
Mesh = 0;
return 0;
}
bool C3DSMeshFileLoader::readPercentageChunk(io::IReadFile* file,
ChunkData* chunk, f32& percentage)
{
ChunkData data;
readChunkData(file, data);
short intpercentage;
float fpercentage;
switch(data.header.id)
{
case C3DS_PERCENTAGE_I:
{
// read short
file->read(&intpercentage, 2);
#ifdef __BIG_ENDIAN__
intpercentage = os::Byteswap::byteswap(intpercentage);
#endif
percentage=intpercentage/100.0f;
data.read += 2;
}
break;
case C3DS_PERCENTAGE_F:
{
// read float
file->read(&fpercentage, sizeof(float));
data.read += sizeof(float);
#ifdef __BIG_ENDIAN__
percentage = os::Byteswap::byteswap(fpercentage);
#else
percentage = (f32)fpercentage;
#endif
}
break;
default:
{
// unknown percentage chunk
os::Printer::log("Unknown percentage chunk in 3Ds file.", ELL_WARNING);
file->seek(data.header.length - data.read, true);
data.read += data.header.length - data.read;
}
}
chunk->read += data.read;
return true;
}
bool C3DSMeshFileLoader::readColorChunk(io::IReadFile* file, ChunkData* chunk,
video::SColor& out)
{
ChunkData data;
readChunkData(file, data);
u8 c[3];
f32 cf[3];
switch(data.header.id)
{
case C3DS_COL_TRU:
case C3DS_COL_LIN_24:
{
// read 8 bit data
file->read(c, sizeof(c));
out.set(255, c[0], c[1], c[2]);
data.read += sizeof(c);
}
break;
case C3DS_COL_RGB:
case C3DS_COL_LIN_F:
{
// read float data
file->read(cf, sizeof(cf));
#ifdef __BIG_ENDIAN__
cf[0] = os::Byteswap::byteswap(cf[0]);
cf[1] = os::Byteswap::byteswap(cf[1]);
cf[2] = os::Byteswap::byteswap(cf[2]);
#endif
out.set(255, (s32)(cf[0]*255.0f), (s32)(cf[1]*255.0f), (s32)(cf[2]*255.0f));
data.read += sizeof(cf);
}
break;
default:
{
// unknown color chunk size
os::Printer::log("Unknown size of color chunk in 3Ds file.", ELL_WARNING);
file->seek(data.header.length - data.read, true);
data.read += data.header.length - data.read;
}
}
chunk->read += data.read;
return true;
}
bool C3DSMeshFileLoader::readMaterialChunk(io::IReadFile* file, ChunkData* parent)
{
u16 matSection=0;
while(parent->read < parent->header.length)
{
ChunkData data;
readChunkData(file, data);
switch(data.header.id)
{
case C3DS_MATNAME:
{
c8* c = new c8[data.header.length - data.read];
file->read(c, data.header.length - data.read);
if (strlen(c))
CurrentMaterial.Name = c;
data.read += data.header.length - data.read;
delete [] c;
}
break;
case C3DS_MATAMBIENT:
readColorChunk(file, &data, CurrentMaterial.Material.AmbientColor);
break;
case C3DS_MATDIFFUSE:
readColorChunk(file, &data, CurrentMaterial.Material.DiffuseColor);
break;
case C3DS_MATSPECULAR:
readColorChunk(file, &data, CurrentMaterial.Material.SpecularColor);
break;
case C3DS_MATSHININESS:
readPercentageChunk(file, &data, CurrentMaterial.Material.Shininess);
break;
case C3DS_TRANSPARENCY:
{
f32 percentage;
readPercentageChunk(file, &data, percentage);
if (percentage>0.0f)
{
CurrentMaterial.Material.MaterialTypeParam=percentage;
CurrentMaterial.Material.MaterialType=video::EMT_TRANSPARENT_VERTEX_ALPHA;
}
else
{
CurrentMaterial.Material.MaterialType=video::EMT_SOLID;
}
}
break;
case C3DS_WIRE:
CurrentMaterial.Material.Wireframe=true;
break;
case C3DS_TWO_SIDE:
CurrentMaterial.Material.BackfaceCulling=false;
break;
case C3DS_SHADING:
{
s16 flags;
file->read(&flags, 2);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
switch (flags)
{
case 0:
CurrentMaterial.Material.Wireframe=true;
break;
case 1:
CurrentMaterial.Material.Wireframe=false;
CurrentMaterial.Material.GouraudShading=false;
break;
case 2:
CurrentMaterial.Material.Wireframe=false;
CurrentMaterial.Material.GouraudShading=true;
break;
default:
// phong and metal missing
break;
}
data.read += data.header.length - data.read;
}
break;
case C3DS_MATTEXMAP:
case C3DS_MATSPECMAP:
case C3DS_MATOPACMAP:
case C3DS_MATREFLMAP:
case C3DS_MATBUMPMAP:
{
matSection=data.header.id;
#if 0 // Should contain a percentage chunk, but does not work with the meshes
f32 percentage=0;
if (matSection!=C3DS_MATREFLMAP)
readPercentageChunk(file, &data, percentage);
#endif
}
break;
case C3DS_MATMAPFILE:
{
// read texture file name
c8* c = new c8[data.header.length - data.read];
file->read(c, data.header.length - data.read);
if (matSection == C3DS_MATTEXMAP)
CurrentMaterial.Filename[0] = c;
else if (matSection == C3DS_MATSPECMAP)
CurrentMaterial.Filename[1] = c;
else if (matSection == C3DS_MATOPACMAP)
CurrentMaterial.Filename[2] = c;
else if (matSection == C3DS_MATREFLMAP)
CurrentMaterial.Filename[3] = c;
else if (matSection == C3DS_MATBUMPMAP)
CurrentMaterial.Filename[4] = c;
data.read += data.header.length - data.read;
delete [] c;
}
break;
case C3DS_MAT_TEXTILING:
{
s16 flags;
file->read(&flags, 2);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
data.read += 2;
}
break;
case C3DS_MAT_USCALE:
case C3DS_MAT_VSCALE:
case C3DS_MAT_UOFFSET:
case C3DS_MAT_VOFFSET:
{
f32 value;
file->read(&value, 4);
#ifdef __BIG_ENDIAN__
value = os::Byteswap::byteswap(value);
#endif
data.read += 4;
}
break;
default:
// ignore chunk
file->seek(data.header.length - data.read, true);
data.read += data.header.length - data.read;
}
parent->read += data.read;
}
Materials.push_back(CurrentMaterial);
CurrentMaterial.clear();
return true;
}
bool C3DSMeshFileLoader::readTrackChunk(io::IReadFile* file, ChunkData& data,
IMeshBuffer* mb, const core::vector3df& pivot)
{
u16 flags;
u32 flags2;
// Track flags
file->read(&flags, 2);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
file->read(&flags2, 4);
#ifdef __BIG_ENDIAN__
flags2 = os::Byteswap::byteswap(flags2);
#endif
file->read(&flags2, 4);
#ifdef __BIG_ENDIAN__
flags2 = os::Byteswap::byteswap(flags2);
#endif
// Num keys
file->read(&flags2, 4);
#ifdef __BIG_ENDIAN__
flags2 = os::Byteswap::byteswap(flags2);
#endif
file->read(&flags2, 4);
#ifdef __BIG_ENDIAN__
flags2 = os::Byteswap::byteswap(flags2);
#endif
// TCB flags
file->read(&flags, 2);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
data.read += 20;
f32 angle=0.0f;
if (data.header.id== C3DS_ROT_TRACK_TAG)
{
// Angle
file->read(&angle, sizeof(f32));
#ifdef __BIG_ENDIAN__
angle = os::Byteswap::byteswap(angle);
#endif
data.read += sizeof(f32);
}
core::vector3df vec;
file->read(&vec.X, sizeof(f32));
file->read(&vec.Y, sizeof(f32));
file->read(&vec.Z, sizeof(f32));
#ifdef __BIG_ENDIAN__
vec.X = os::Byteswap::byteswap(vec.X);
vec.Y = os::Byteswap::byteswap(vec.X);
vec.Z = os::Byteswap::byteswap(vec.X);
#endif
data.read += 12;
vec-=pivot;
// apply transformation to mesh buffer
if (false)//mb)
{
video::S3DVertex *vertices=(video::S3DVertex*)mb->getVertices();
if (data.header.id==C3DS_POS_TRACK_TAG)
{
for (u32 i=0; i<mb->getVertexCount(); ++i)
vertices[i].Pos+=vec;
}
else if (data.header.id==C3DS_ROT_TRACK_TAG)
{
//TODO
}
else if (data.header.id==C3DS_SCL_TRACK_TAG)
{
//TODO
}
}
// skip further frames
file->seek(data.header.length - data.read, true);
data.read += data.header.length - data.read;
return true;
}
bool C3DSMeshFileLoader::readFrameChunk(io::IReadFile* file, ChunkData* parent)
{
ChunkData data;
//KF_HDR is always at the beginning
readChunkData(file, data);
if (data.header.id != C3DS_KF_HDR)
return false;
else
{
u16 flags;
file->read(&flags, 2);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
c8* c = new c8[data.header.length - data.read-4];
file->read(c, data.header.length - data.read-4);
file->read(&flags, 2);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
data.read += data.header.length - data.read;
parent->read += data.read;
delete [] c;
}
IMeshBuffer* mb=0;
core::vector3df pivot,bboxCenter;
while(parent->read < parent->header.length)
{
readChunkData(file, data);
switch(data.header.id)
{
case C3DS_OBJECT_TAG:
{
mb=0;
pivot.set(0.0f, 0.0f, 0.0f);
}
break;
case C3DS_KF_SEG:
{
u32 flags;
file->read(&flags, 4);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
file->read(&flags, 4);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
data.read += 8;
}
break;
case C3DS_KF_NODE_HDR:
{
s16 flags;
c8* c = new c8[data.header.length - data.read-6];
file->read(c, data.header.length - data.read-6);
// search mesh buffer to apply these transformations to
for (u32 i=0; i<MeshBufferNames.size(); ++i)
{
if (MeshBufferNames[i]==c)
{
mb=Mesh->getMeshBuffer(i);
break;
}
}
file->read(&flags, 2);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
file->read(&flags, 2);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
file->read(&flags, 2);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
data.read += data.header.length - data.read;
delete [] c;
}
break;
case C3DS_KF_CURTIME:
{
u32 flags;
file->read(&flags, 4);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
data.read += 4;
}
break;
case C3DS_NODE_ID:
{
u16 flags;
file->read(&flags, 2);
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
data.read += 2;
}
break;
case C3DS_PIVOTPOINT:
{
file->read(&pivot.X, sizeof(f32));
file->read(&pivot.Y, sizeof(f32));
file->read(&pivot.Z, sizeof(f32));
#ifdef __BIG_ENDIAN__
pivot.X = os::Byteswap::byteswap(pivot.X);
pivot.Y = os::Byteswap::byteswap(pivot.Y);
pivot.Z = os::Byteswap::byteswap(pivot.Z);
#endif
data.read += 12;
}
break;
case C3DS_BOUNDBOX:
{
core::aabbox3df bbox;
// abuse bboxCenter as temporary variable
file->read(&bboxCenter.X, sizeof(f32));
file->read(&bboxCenter.Y, sizeof(f32));
file->read(&bboxCenter.Z, sizeof(f32));
#ifdef __BIG_ENDIAN__
bboxCenter.X = os::Byteswap::byteswap(bboxCenter.X);
bboxCenter.Y = os::Byteswap::byteswap(bboxCenter.Y);
bboxCenter.Z = os::Byteswap::byteswap(bboxCenter.Z);
#endif
bbox.reset(bboxCenter);
file->read(&bboxCenter.X, sizeof(f32));
file->read(&bboxCenter.Y, sizeof(f32));
file->read(&bboxCenter.Z, sizeof(f32));
#ifdef __BIG_ENDIAN__
bboxCenter.X = os::Byteswap::byteswap(bboxCenter.X);
bboxCenter.Y = os::Byteswap::byteswap(bboxCenter.Y);
bboxCenter.Z = os::Byteswap::byteswap(bboxCenter.Z);
#endif
bbox.addInternalPoint(bboxCenter);
bboxCenter=bbox.getCenter();
data.read += 24;
}
break;
case C3DS_POS_TRACK_TAG:
case C3DS_ROT_TRACK_TAG:
case C3DS_SCL_TRACK_TAG:
readTrackChunk(file, data, mb, bboxCenter-pivot);
break;
default:
// ignore chunk
file->seek(data.header.length - data.read, true);
data.read += data.header.length - data.read;
}
parent->read += data.read;
data.read=0;
}
return true;
}
bool C3DSMeshFileLoader::readChunk(io::IReadFile* file, ChunkData* parent)
{
while(parent->read < parent->header.length)
{
ChunkData data;
readChunkData(file, data);
switch(data.header.id)
{
case C3DS_VERSION:
{
u16 version;
file->read(&version, sizeof(u16));
#ifdef __BIG_ENDIAN__
version = os::Byteswap::byteswap(version);
#endif
file->seek(data.header.length - data.read - 2, true);
data.read += data.header.length - data.read;
if (version != 0x03)
os::Printer::log("3ds file version is other than 3.", ELL_ERROR);
}
break;
case C3DS_EDIT_MATERIAL:
readMaterialChunk(file, &data);
break;
case C3DS_KEYF3DS:
readFrameChunk(file, &data);
break;
case C3DS_EDIT3DS:
break;
case C3DS_MESHVERSION:
case 0x01:
{
u32 version;
file->read(&version, sizeof(u32));
#ifdef __BIG_ENDIAN__
version = os::Byteswap::byteswap(version);
#endif
data.read += sizeof(u32);
}
break;
case C3DS_EDIT_OBJECT:
{
core::stringc name;
readString(file, data, name);
readObjectChunk(file, &data);
composeObject(file, name);
}
break;
default:
// ignore chunk
file->seek(data.header.length - data.read, true);
data.read += data.header.length - data.read;
}
parent->read += data.read;
}
return true;
}
bool C3DSMeshFileLoader::readObjectChunk(io::IReadFile* file, ChunkData* parent)
{
while(parent->read < parent->header.length)
{
ChunkData data;
readChunkData(file, data);
switch(data.header.id)
{
case C3DS_OBJTRIMESH:
readObjectChunk(file, &data);
break;
case C3DS_TRIVERT:
readVertices(file, data);
break;
case C3DS_POINTFLAGARRAY:
{
u16 numVertex, flags;
file->read(&numVertex, sizeof(u16));
#ifdef __BIG_ENDIAN__
numVertex= os::Byteswap::byteswap(numVertex);
#endif
for (u16 i=0; i<numVertex; ++i)
{
file->read(&flags, sizeof(u16));
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
}
data.read += (numVertex+1)*sizeof(u16);
}
break;
case C3DS_TRIFACE:
readIndices(file, data);
readObjectChunk(file, &data); // read smooth and material groups
break;
case C3DS_TRIFACEMAT:
readMaterialGroup(file, data);
break;
case C3DS_TRIUV: // getting texture coordinates
readTextureCoords(file, data);
break;
case C3DS_TRIMATRIX:
{
f32 mat[4][3];
file->read(&mat, 12*sizeof(f32));
TransformationMatrix.makeIdentity();
for (int i=0; i<4; ++i)
{
for (int j=0; j<3; ++j)
{
#ifdef __BIG_ENDIAN__
TransformationMatrix(i,j)=os::Byteswap::byteswap(mat[i][j]);
#else
TransformationMatrix(i,j)=mat[i][j];
#endif
}
}
data.read += 12*sizeof(f32);
}
break;
case C3DS_MESHCOLOR:
{
u8 flag;
file->read(&flag, sizeof(u8));
++data.read;
}
break;
case C3DS_TRISMOOTH: // TODO
{
SmoothingGroups = new u32[CountFaces];
file->read(SmoothingGroups, CountFaces*sizeof(u32));
#ifdef __BIG_ENDIAN__
for (u16 i=0; i<CountFaces; ++i)
SmoothingGroups[i] = os::Byteswap::byteswap(SmoothingGroups[i]);
#endif
data.read += CountFaces*sizeof(u32);
}
break;
default:
// ignore chunk
file->seek(data.header.length - data.read, true);
data.read += data.header.length - data.read;
}
parent->read += data.read;
}
return true;
}
void C3DSMeshFileLoader::composeObject(io::IReadFile* file, const core::stringc& name)
{
if (Mesh->getMeshBufferCount() != Materials.size())
loadMaterials(file);
if (MaterialGroups.empty())
{
// no material group, so add all
SMaterialGroup group;
group.faceCount = CountFaces;
group.faces = new u16[group.faceCount];
for (u32 i=0; i<group.faceCount; ++i)
group.faces[i] = i;
MaterialGroups.push_back(group);
// if we've got no material, add one without a texture
if (Materials.empty())
{
SCurrentMaterial m;
Materials.push_back(m);
SMeshBuffer* mb = new scene::SMeshBuffer();
Mesh->addMeshBuffer(mb);
mb->getMaterial() = Materials[0].Material;
mb->drop();
// add an empty mesh buffer name
core::stringc c = "";
MeshBufferNames.push_back(c);
}
}
for (u32 i=0; i<MaterialGroups.size(); ++i)
{
SMeshBuffer* mb = 0;
video::SMaterial* mat=0;
u32 mbPos;
// -3 because we add three vertices at once
u32 maxPrimitives = core::min_(Driver->getMaximalPrimitiveCount(), (u32)((1<<16)-1))-3; // currently hardcoded s16 max value for index pointers
// find mesh buffer for this group
for (mbPos=0; mbPos<Materials.size(); ++mbPos)
{
if (MaterialGroups[i].MaterialName == Materials[mbPos].Name)
{
mb = (SMeshBuffer*)Mesh->getMeshBuffer(mbPos);
mat=&Materials[mbPos].Material;
MeshBufferNames[mbPos]=name;
break;
}
}
if (mb != 0)
{
// add geometry to the buffer.
video::S3DVertex vtx;
core::vector3df vec;
vtx.Color=mat->DiffuseColor;
if (mat->MaterialType==video::EMT_TRANSPARENT_VERTEX_ALPHA)
{
vtx.Color.setAlpha((int)(255.0f*mat->MaterialTypeParam));
}
vtx.Normal.set(0,0,0);
for (s32 f=0; f<MaterialGroups[i].faceCount; ++f)
{
u32 vtxCount = mb->Vertices.size();
if (vtxCount>maxPrimitives)
{
IMeshBuffer* tmp = mb;
mb = new SMeshBuffer();
Mesh->addMeshBuffer(mb);
mb->drop();
Mesh->MeshBuffers[mbPos] = Mesh->MeshBuffers.getLast();
Mesh->MeshBuffers[Mesh->MeshBuffers.size()-1] = tmp;
mb->getMaterial() = *mat;
vtxCount=0;
}
for (s32 v=0; v<3; ++v)
{
s32 idx = Indices[MaterialGroups[i].faces[f]*4 +v];
if (CountVertices > idx)
{
vtx.Pos.X = Vertices[idx*3 + 0];
vtx.Pos.Z = Vertices[idx*3 + 1];
vtx.Pos.Y = Vertices[idx*3 + 2];
// TransformationMatrix.transformVect(vtx.Pos);
}
if (CountTCoords > idx)
{
vtx.TCoords.X = TCoords[idx*2 + 0];
vtx.TCoords.Y = 1.0f -TCoords[idx*2 + 1];
}
mb->Vertices.push_back(vtx);
}
// compute normal
core::plane3d<f32> pl(mb->Vertices[vtxCount].Pos, mb->Vertices[vtxCount+2].Pos,
mb->Vertices[vtxCount+1].Pos);
mb->Vertices[vtxCount].Normal = pl.Normal;
mb->Vertices[vtxCount+1].Normal = pl.Normal;
mb->Vertices[vtxCount+2].Normal = pl.Normal;
// add indices
mb->Indices.push_back(vtxCount);
mb->Indices.push_back(vtxCount+2);
mb->Indices.push_back(vtxCount+1);
}
}
else
os::Printer::log("Found no matching material for Group in 3ds file.", ELL_WARNING);
}
cleanUp();
}
core::stringc C3DSMeshFileLoader::getTextureFileName(const core::stringc& texture,
core::stringc& model)
{
s32 idx = -1;
idx = model.findLast('/');
if (idx == -1)
idx = model.findLast('\\');
if (idx == -1)
return core::stringc();
core::stringc p = model.subString(0, idx+1);
p.append(texture);
return p;
}
void C3DSMeshFileLoader::loadMaterials(io::IReadFile* file)
{
// create a mesh buffer for every material
core::stringc modelFilename = file->getFileName();
if (Materials.empty())
os::Printer::log("No materials found in 3ds file.", ELL_INFORMATION);
MeshBufferNames.reallocate(Materials.size());
for (u32 i=0; i<Materials.size(); ++i)
{
MeshBufferNames.push_back("");
SMeshBuffer* m = new scene::SMeshBuffer();
Mesh->addMeshBuffer(m);
m->getMaterial() = Materials[i].Material;
if (Materials[i].Filename[0].size())
{
video::ITexture* texture = Driver->getTexture(Materials[i].Filename[0].c_str());
if (!texture)
{
core::stringc fname = getTextureFileName(
Materials[i].Filename[0], modelFilename);
if (fname.size())
texture = Driver->getTexture(fname.c_str());
}
if (!texture)
os::Printer::log("Could not load a texture for entry in 3ds file",
Materials[i].Filename[0].c_str(), ELL_WARNING);
else
m->getMaterial().Textures[0] = texture;
}
if (Materials[i].Filename[2].size())
{
video::ITexture* texture = Driver->getTexture(Materials[i].Filename[2].c_str());
if (!texture)
{
core::stringc fname = getTextureFileName(
Materials[i].Filename[2], modelFilename);
if (fname.size())
texture = Driver->getTexture(fname.c_str());
}
if (!texture)
{
os::Printer::log("Could not load a texture for entry in 3ds file",
Materials[i].Filename[2].c_str(), ELL_WARNING);
}
else
{
m->getMaterial().Textures[0] = texture;
m->getMaterial().MaterialType = video::EMT_TRANSPARENT_ADD_COLOR;
}
}
if (Materials[i].Filename[3].size())
{
video::ITexture* texture = Driver->getTexture(Materials[i].Filename[3].c_str());
if (!texture)
{
core::stringc fname = getTextureFileName(
Materials[i].Filename[3], modelFilename);
if (fname.size())
texture = Driver->getTexture(fname.c_str());
}
if (!texture)
{
os::Printer::log("Could not load a texture for entry in 3ds file",
Materials[i].Filename[3].c_str(), ELL_WARNING);
}
else
{
m->getMaterial().Textures[1] = m->getMaterial().Textures[0];
m->getMaterial().Textures[0] = texture;
m->getMaterial().MaterialType = video::EMT_REFLECTION_2_LAYER;
}
}
if (Materials[i].Filename[4].size())
{
video::ITexture* texture = Driver->getTexture(Materials[i].Filename[4].c_str());
if (!texture)
{
core::stringc fname = getTextureFileName(
Materials[i].Filename[4], modelFilename);
if (fname.size())
texture = Driver->getTexture(fname.c_str());
}
if (!texture)
os::Printer::log("Could not load a texture for entry in 3ds file",
Materials[i].Filename[4].c_str(), ELL_WARNING);
else
{
m->getMaterial().Textures[1] = texture;
Driver->makeNormalMapTexture(texture, 9.0f);
m->getMaterial().MaterialType=video::EMT_PARALLAX_MAP_SOLID;
m->getMaterial().MaterialTypeParam=0.035f;
}
}
m->drop();
}
}
void C3DSMeshFileLoader::cleanUp()
{
delete [] Vertices;
CountVertices = 0;
Vertices = 0;
delete [] Indices;
Indices = 0;
CountFaces = 0;
delete [] SmoothingGroups;
SmoothingGroups = 0;
delete [] TCoords;
TCoords = 0;
CountTCoords = 0;
MaterialGroups.clear();
}
void C3DSMeshFileLoader::readTextureCoords(io::IReadFile* file, ChunkData& data)
{
file->read(&CountTCoords, sizeof(CountTCoords));
#ifdef __BIG_ENDIAN__
CountTCoords = os::Byteswap::byteswap(CountTCoords);
#endif
data.read += sizeof(CountTCoords);
s32 tcoordsBufferByteSize = CountTCoords * sizeof(f32) * 2;
if (data.header.length - data.read != tcoordsBufferByteSize)
{
os::Printer::log("Invalid size of tcoords found in 3ds file.", ELL_WARNING);
return;
}
TCoords = new f32[CountTCoords * 3];
file->read(TCoords, tcoordsBufferByteSize);
#ifdef __BIG_ENDIAN__
for (int i=0;i<CountTCoords*2;i++) TCoords[i] = os::Byteswap::byteswap(TCoords[i]);
#endif
data.read += tcoordsBufferByteSize;
}
void C3DSMeshFileLoader::readMaterialGroup(io::IReadFile* file, ChunkData& data)
{
SMaterialGroup group;
readString(file, data, group.MaterialName);
file->read(&group.faceCount, sizeof(group.faceCount));
#ifdef __BIG_ENDIAN__
group.faceCount = os::Byteswap::byteswap(group.faceCount);
#endif
data.read += sizeof(group.faceCount);
// read faces
group.faces = new u16[group.faceCount];
file->read(group.faces, sizeof(u16) * group.faceCount);
#ifdef __BIG_ENDIAN__
for (u32 i=0;i<group.faceCount;++i)
group.faces[i] = os::Byteswap::byteswap(group.faces[i]);
#endif
data.read += sizeof(u16) * group.faceCount;
MaterialGroups.push_back(group);
}
void C3DSMeshFileLoader::readIndices(io::IReadFile* file, ChunkData& data)
{
file->read(&CountFaces, sizeof(CountFaces));
#ifdef __BIG_ENDIAN__
CountFaces = os::Byteswap::byteswap(CountFaces);
#endif
data.read += sizeof(CountFaces);
s32 indexBufferByteSize = CountFaces * sizeof(u16) * 4;
// Indices are u16s.
// After every 3 Indices in the array, there follows an edge flag.
Indices = new u16[CountFaces * 4];
file->read(Indices, indexBufferByteSize);
#ifdef __BIG_ENDIAN__
for (int i=0;i<CountFaces*4;++i)
Indices[i] = os::Byteswap::byteswap(Indices[i]);
#endif
data.read += indexBufferByteSize;
}
void C3DSMeshFileLoader::readVertices(io::IReadFile* file, ChunkData& data)
{
file->read(&CountVertices, sizeof(CountVertices));
#ifdef __BIG_ENDIAN__
CountVertices = os::Byteswap::byteswap(CountVertices);
#endif
data.read += sizeof(CountVertices);
s32 vertexBufferByteSize = CountVertices * sizeof(f32) * 3;
if (data.header.length - data.read != vertexBufferByteSize)
{
os::Printer::log("Invalid size of vertices found in 3ds file.", ELL_WARNING);
return;
}
Vertices = new f32[CountVertices * 3];
file->read(Vertices, vertexBufferByteSize);
#ifdef __BIG_ENDIAN__
for (int i=0;i<CountVertices*3;i++) Vertices[i] = os::Byteswap::byteswap(Vertices[i]);
#endif
data.read += vertexBufferByteSize;
}
void C3DSMeshFileLoader::readChunkData(io::IReadFile* file, ChunkData& data)
{
file->read(&data.header, sizeof(ChunkHeader));
#ifdef __BIG_ENDIAN__
data.header.id = os::Byteswap::byteswap(data.header.id);
data.header.length = os::Byteswap::byteswap(data.header.length);
#endif
data.read += sizeof(ChunkHeader);
}
void C3DSMeshFileLoader::readString(io::IReadFile* file, ChunkData& data, core::stringc& out)
{
c8 c = 1;
out = "";
while (c)
{
file->read(&c, sizeof(c8));
if (c)
out.append(c);
++data.read;
}
}
} // end namespace scene
} // end namespace irr
#endif // _IRR_COMPILE_WITH_3DS_LOADER_
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