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irrlicht/source/Irrlicht/CMS3DMeshFileLoader.cpp

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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// 2019 additional alignment and big_endian fixes by Corto and Salas00
// 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_MS3D_LOADER_
#include "IReadFile.h"
#include "os.h"
#include "CMS3DMeshFileLoader.h"
#include "CSkinnedMesh.h"
namespace irr
{
namespace scene
{
#ifdef _DEBUG
#define _IRR_DEBUG_MS3D_LOADER_
#endif
// byte-align structures
#include "irrpack.h"
namespace {
// File header
struct MS3DHeader
{
char ID[10];
int Version;
} PACK_STRUCT;
// Vertex information
struct MS3DVertex
{
u8 pad1[3];
u8 Flags;
float Vertex[3];
char BoneID;
u8 RefCount;
u8 pad2[2];
} PACK_STRUCT;
#define MS3DVERTEX_NUM_PAD_BYTES 5
// Triangle information
struct MS3DTriangle
{
u16 Flags;
u16 VertexIndices[3];
float VertexNormals[3][3];
float S[3], T[3];
u8 SmoothingGroup;
u8 GroupIndex;
u8 pad1[2];
} PACK_STRUCT;
#define MS3DTRIANGLE_NUM_PAD_BYTES 2
// Material information
struct MS3DMaterial
{
char Name[32];
float Ambient[4];
float Diffuse[4];
float Specular[4];
float Emissive[4];
float Shininess; // 0.0f - 128.0f
float Transparency; // 0.0f - 1.0f
u8 Mode; // 0, 1, 2 is unused now
char Texture[128];
char Alphamap[128];
u8 pad1[3];
} PACK_STRUCT;
#define MS3DMATERIAL_NUM_PAD_BYTES 3
// Joint information
struct MS3DJoint
{
u8 pad[3];
u8 Flags;
char Name[32];
char ParentName[32];
float Rotation[3];
float Translation[3];
u16 NumRotationKeyframes;
u16 NumTranslationKeyframes;
} PACK_STRUCT;
#define MS3DJOINT_NUM_PAD_BYTES 3
// Keyframe data
struct MS3DKeyframe
{
float Time;
float Parameter[3];
} PACK_STRUCT;
// vertex weights in 1.8.x
struct MS3DVertexWeights
{
char boneIds[3];
u8 weights[3];
} PACK_STRUCT;
} // end namespace
// Default alignment
#include "irrunpack.h"
// Get float encoded in little endian in way not causing troubles when floats have to be memory aligned.
static inline float get_unaligned_le_float(const u8 *ptr)
{
union {
u8 u[4];
float f;
} tmp;
#ifdef __BIG_ENDIAN__
tmp.u[0] = ptr[3];
tmp.u[1] = ptr[2];
tmp.u[2] = ptr[1];
tmp.u[3] = ptr[0];
#else
tmp.f = *(float*)ptr;
#endif
return tmp.f;
}
struct SGroup
{
core::stringc Name;
core::array<u16> VertexIds;
u16 MaterialIdx;
};
//! Constructor
CMS3DMeshFileLoader::CMS3DMeshFileLoader(video::IVideoDriver *driver)
: Driver(driver), AnimatedMesh(0)
{
#ifdef _DEBUG
setDebugName("CMS3DMeshFileLoader");
#endif
}
//! returns true if the file maybe is able to be loaded by this class
//! based on the file extension (e.g. ".bsp")
bool CMS3DMeshFileLoader::isALoadableFileExtension(const io::path& filename) const
{
return core::hasFileExtension ( filename, "ms3d" );
}
//! 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* CMS3DMeshFileLoader::createMesh(io::IReadFile* file)
{
if (!file)
return 0;
AnimatedMesh = new CSkinnedMesh();
if ( load(file) )
{
AnimatedMesh->finalize();
}
else
{
AnimatedMesh->drop();
AnimatedMesh = 0;
}
return AnimatedMesh;
}
//! loads a milkshape file
bool CMS3DMeshFileLoader::load(io::IReadFile* file)
{
if (!file)
return false;
// find file size
const long fileSize = file->getSize();
// read whole file
u8* buffer = new u8[fileSize];
size_t read = file->read(buffer, fileSize);
if (read != (size_t)fileSize)
{
delete [] buffer;
os::Printer::log("Could not read full file. Loading failed", file->getFileName(), ELL_ERROR);
return false;
}
// read header
const u8 *pPtr = (u8*)((void*)buffer);
MS3DHeader *pHeader = (MS3DHeader*)pPtr;
pPtr += sizeof(MS3DHeader);
if ( strncmp( pHeader->ID, "MS3D000000", 10 ) != 0 )
{
delete [] buffer;
os::Printer::log("Not a valid Milkshape3D Model File. Loading failed", file->getFileName(), ELL_ERROR);
return false;
}
#ifdef __BIG_ENDIAN__
pHeader->Version = os::Byteswap::byteswap(pHeader->Version);
#endif
if ( pHeader->Version < 3 || pHeader->Version > 4 )
{
delete [] buffer;
os::Printer::log("Only Milkshape3D version 3 and 4 (1.3 to 1.8) is supported. Loading failed", file->getFileName(), ELL_ERROR);
return false;
}
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Loaded header version", core::stringc(pHeader->Version).c_str());
#endif
// get pointers to data
// vertices
u16 numVertices = *(u16*)pPtr;
#ifdef __BIG_ENDIAN__
numVertices = os::Byteswap::byteswap(numVertices);
#endif
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Load vertices", core::stringc(numVertices).c_str());
#endif
pPtr += sizeof(u16);
MS3DVertex *vertices = new MS3DVertex[numVertices];
if (pPtr + ((sizeof(MS3DVertex) - MS3DVERTEX_NUM_PAD_BYTES) * numVertices) > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found.", file->getFileName(), ELL_ERROR);
return false;
}
for (u16 tmp=0; tmp<numVertices; ++tmp)
{
//printf("&vertices[tmp].Vertex[0] = %p (%d)\n", &vertices[tmp].Vertex[0], (int)((long long)(&vertices[tmp].Vertex[0]) % 4));
memcpy(&vertices[tmp].Flags, pPtr, sizeof(struct MS3DVertex) - MS3DVERTEX_NUM_PAD_BYTES);
#ifdef __BIG_ENDIAN__
vertices[tmp].Vertex[0] = os::Byteswap::byteswap(vertices[tmp].Vertex[0]);
vertices[tmp].Vertex[1] = os::Byteswap::byteswap(vertices[tmp].Vertex[1]);
vertices[tmp].Vertex[2] = -os::Byteswap::byteswap(vertices[tmp].Vertex[2]);
#else
vertices[tmp].Vertex[2] = -vertices[tmp].Vertex[2];
#endif
// Go to the next vertex structure
pPtr += sizeof(struct MS3DVertex) - MS3DVERTEX_NUM_PAD_BYTES;
}
// triangles
u16 numTriangles = *(u16*)pPtr;
#ifdef __BIG_ENDIAN__
numTriangles = os::Byteswap::byteswap(numTriangles);
#endif
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Load Triangles", core::stringc(numTriangles).c_str());
#endif
pPtr += sizeof(u16);
MS3DTriangle *triangles = new MS3DTriangle[numTriangles];
if (pPtr + ((sizeof(MS3DTriangle) - MS3DTRIANGLE_NUM_PAD_BYTES) * numTriangles) > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found.", file->getFileName(), ELL_ERROR);
return false;
}
for (u16 tmp=0; tmp<numTriangles; ++tmp)
{
memcpy(&triangles[tmp].Flags, pPtr, sizeof(struct MS3DTriangle) - MS3DTRIANGLE_NUM_PAD_BYTES);
#ifdef __BIG_ENDIAN__
triangles[tmp].Flags = os::Byteswap::byteswap(triangles[tmp].Flags);
for (u16 j=0; j<3; ++j)
{
triangles[tmp].VertexIndices[j] = os::Byteswap::byteswap(triangles[tmp].VertexIndices[j]);
triangles[tmp].VertexNormals[j][0] = os::Byteswap::byteswap(triangles[tmp].VertexNormals[j][0]);
triangles[tmp].VertexNormals[j][1] = os::Byteswap::byteswap(triangles[tmp].VertexNormals[j][1]);
triangles[tmp].VertexNormals[j][2] = -os::Byteswap::byteswap(triangles[tmp].VertexNormals[j][2]);
triangles[tmp].S[j] = os::Byteswap::byteswap(triangles[tmp].S[j]);
triangles[tmp].T[j] = os::Byteswap::byteswap(triangles[tmp].T[j]);
}
#else
triangles[tmp].VertexNormals[0][2] = -triangles[tmp].VertexNormals[0][2];
triangles[tmp].VertexNormals[1][2] = -triangles[tmp].VertexNormals[1][2];
triangles[tmp].VertexNormals[2][2] = -triangles[tmp].VertexNormals[2][2];
#endif
// Go to the next triangle structure
pPtr += sizeof(struct MS3DTriangle) - MS3DTRIANGLE_NUM_PAD_BYTES;
}
// groups
u16 numGroups = *(u16*)pPtr;
#ifdef __BIG_ENDIAN__
numGroups = os::Byteswap::byteswap(numGroups);
#endif
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Load Groups", core::stringc(numGroups).c_str());
#endif
pPtr += sizeof(u16);
core::array<SGroup> groups;
groups.reallocate(numGroups);
//store groups
u32 i;
for (i=0; i<numGroups; ++i)
{
groups.push_back(SGroup());
SGroup& grp = groups.getLast();
// The byte flag is before the name, so add 1
grp.Name = ((const c8*) pPtr) + 1;
pPtr += 33; // name and 1 byte flags
u16 triangleCount = *(u16*)pPtr;
#ifdef __BIG_ENDIAN__
triangleCount = os::Byteswap::byteswap(triangleCount);
#endif
pPtr += sizeof(u16);
grp.VertexIds.reallocate(triangleCount);
//pPtr += sizeof(u16) * triangleCount; // triangle indices
for (u16 j=0; j<triangleCount; ++j)
{
#ifdef __BIG_ENDIAN__
grp.VertexIds.push_back(os::Byteswap::byteswap(*(u16*)pPtr));
#else
grp.VertexIds.push_back(*(u16*)pPtr);
#endif
pPtr += sizeof (u16);
}
grp.MaterialIdx = *(u8*)pPtr;
if (grp.MaterialIdx == 255)
grp.MaterialIdx = 0;
pPtr += sizeof(c8); // material index
if (pPtr > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found.", file->getFileName(), ELL_ERROR);
return false;
}
}
// load materials
u16 numMaterials = *(u16*)pPtr;
#ifdef __BIG_ENDIAN__
numMaterials = os::Byteswap::byteswap(numMaterials);
#endif
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Load Materials", core::stringc(numMaterials).c_str());
#endif
pPtr += sizeof(u16);
if(numMaterials == 0)
{
// if there are no materials, add at least one buffer
AnimatedMesh->addMeshBuffer();
}
MS3DMaterial *material = new MS3DMaterial;
for (i=0; i<numMaterials; ++i)
{
memcpy(material, pPtr, sizeof(struct MS3DMaterial) - MS3DMATERIAL_NUM_PAD_BYTES);
#ifdef __BIG_ENDIAN__
for (u16 j=0; j<4; ++j)
material->Ambient[j] = os::Byteswap::byteswap(material->Ambient[j]);
for (u16 j=0; j<4; ++j)
material->Diffuse[j] = os::Byteswap::byteswap(material->Diffuse[j]);
for (u16 j=0; j<4; ++j)
material->Specular[j] = os::Byteswap::byteswap(material->Specular[j]);
for (u16 j=0; j<4; ++j)
material->Emissive[j] = os::Byteswap::byteswap(material->Emissive[j]);
material->Shininess = os::Byteswap::byteswap(material->Shininess);
material->Transparency = os::Byteswap::byteswap(material->Transparency);
#endif
pPtr += (sizeof(MS3DMaterial) - MS3DMATERIAL_NUM_PAD_BYTES);
if (pPtr > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found.", file->getFileName(), ELL_ERROR);
return false;
}
scene::SSkinMeshBuffer *tmpBuffer = AnimatedMesh->addMeshBuffer();
tmpBuffer->Material.MaterialType = video::EMT_SOLID;
tmpBuffer->Material.AmbientColor = video::SColorf(material->Ambient[0], material->Ambient[1], material->Ambient[2], material->Ambient[3]).toSColor ();
tmpBuffer->Material.DiffuseColor = video::SColorf(material->Diffuse[0], material->Diffuse[1], material->Diffuse[2], material->Diffuse[3]).toSColor ();
tmpBuffer->Material.EmissiveColor = video::SColorf(material->Emissive[0], material->Emissive[1], material->Emissive[2], material->Emissive[3]).toSColor ();
tmpBuffer->Material.SpecularColor = video::SColorf(material->Specular[0], material->Specular[1], material->Specular[2], material->Specular[3]).toSColor ();
tmpBuffer->Material.Shininess = material->Shininess;
core::stringc TexturePath(material->Texture);
if (TexturePath.trim()!="")
{
TexturePath=stripPathFromString(file->getFileName(),true) + stripPathFromString(TexturePath,false);
tmpBuffer->Material.setTexture(0, Driver->getTexture(TexturePath));
}
core::stringc AlphamapPath=(const c8*)material->Alphamap;
if (AlphamapPath.trim()!="")
{
AlphamapPath=stripPathFromString(file->getFileName(),true) + stripPathFromString(AlphamapPath,false);
tmpBuffer->Material.setTexture(2, Driver->getTexture(AlphamapPath));
}
}
delete material;
// animation time
f32 framesPerSecond = get_unaligned_le_float(pPtr);
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("FPS", core::stringc(framesPerSecond).c_str());
#endif
pPtr += sizeof(float) * 2; // fps and current time
if (framesPerSecond<1.f)
framesPerSecond=1.f;
AnimatedMesh->setAnimationSpeed(framesPerSecond);
// ignore, calculated inside SkinnedMesh
// s32 frameCount = *(int*)pPtr;
#ifdef __BIG_ENDIAN__
// frameCount = os::Byteswap::byteswap(frameCount);
#endif
pPtr += sizeof(int);
u16 jointCount = *(u16*)pPtr;
#ifdef __BIG_ENDIAN__
jointCount = os::Byteswap::byteswap(jointCount);
#endif
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Joints", core::stringc(jointCount).c_str());
#endif
pPtr += sizeof(u16);
if (pPtr > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found.", file->getFileName(), ELL_ERROR);
return false;
}
core::array<core::stringc> parentNames;
parentNames.reallocate(jointCount);
// load joints
for (i=0; i<jointCount; ++i)
{
u32 j;
MS3DJoint *pJoint = new MS3DJoint;
//printf("&pJoint->Rotation[0] = %p (%d)\n", &pJoint->Rotation[0], (int)((long long)(&pJoint->Rotation[0]) % 4));
memcpy(&pJoint->Flags, pPtr, sizeof(MS3DJoint) - MS3DJOINT_NUM_PAD_BYTES);
#ifdef __BIG_ENDIAN__
for (j=0; j<3; ++j)
pJoint->Rotation[j] = os::Byteswap::byteswap(pJoint->Rotation[j]);
for (j=0; j<3; ++j)
pJoint->Translation[j] = os::Byteswap::byteswap(pJoint->Translation[j]);
pJoint->NumRotationKeyframes= os::Byteswap::byteswap(pJoint->NumRotationKeyframes);
pJoint->NumTranslationKeyframes = os::Byteswap::byteswap(pJoint->NumTranslationKeyframes);
#endif
pPtr = pPtr + sizeof(MS3DJoint) - MS3DJOINT_NUM_PAD_BYTES;
if (pPtr > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found.", file->getFileName(), ELL_ERROR);
return false;
}
ISkinnedMesh::SJoint *jnt = AnimatedMesh->addJoint();
jnt->Name = pJoint->Name;
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Joint", jnt->Name.c_str());
os::Printer::log("Rotation keyframes", core::stringc(pJoint->NumRotationKeyframes).c_str());
os::Printer::log("Translation keyframes", core::stringc(pJoint->NumTranslationKeyframes).c_str());
#endif
jnt->LocalMatrix.makeIdentity();
jnt->LocalMatrix.setRotationRadians(
core::vector3df(pJoint->Rotation[0], pJoint->Rotation[1], pJoint->Rotation[2]) );
// convert right-handed to left-handed
jnt->LocalMatrix[2]=-jnt->LocalMatrix[2];
jnt->LocalMatrix[6]=-jnt->LocalMatrix[6];
jnt->LocalMatrix[8]=-jnt->LocalMatrix[8];
jnt->LocalMatrix[9]=-jnt->LocalMatrix[9];
jnt->LocalMatrix.setTranslation(
core::vector3df(pJoint->Translation[0], pJoint->Translation[1], -pJoint->Translation[2]) );
jnt->Animatedposition.set(jnt->LocalMatrix.getTranslation());
jnt->Animatedrotation.set(jnt->LocalMatrix.getRotationDegrees());
parentNames.push_back( (c8*)pJoint->ParentName );
/*if (pJoint->NumRotationKeyframes ||
pJoint->NumTranslationKeyframes)
HasAnimation = true;
*/
MS3DKeyframe* kf = new MS3DKeyframe;
// get rotation keyframes
const u16 numRotationKeyframes = pJoint->NumRotationKeyframes;
for (j=0; j < numRotationKeyframes; ++j)
{
memcpy(kf, pPtr, sizeof(MS3DKeyframe));
//printf("rotation kf = %p (%d)\n", kf, (int)((long long)kf % 4));
#ifdef __BIG_ENDIAN__
kf->Time = os::Byteswap::byteswap(kf->Time);
for (u32 l=0; l<3; ++l)
kf->Parameter[l] = os::Byteswap::byteswap(kf->Parameter[l]);
#endif
pPtr += sizeof(MS3DKeyframe);
if (pPtr > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found.", file->getFileName(), ELL_ERROR);
return false;
}
ISkinnedMesh::SRotationKey *k=AnimatedMesh->addRotationKey(jnt);
k->frame = kf->Time * framesPerSecond-1;
core::matrix4 tmpMatrix;
tmpMatrix.setRotationRadians(
core::vector3df(kf->Parameter[0], kf->Parameter[1], kf->Parameter[2]) );
// convert right-handed to left-handed
tmpMatrix[2]=-tmpMatrix[2];
tmpMatrix[6]=-tmpMatrix[6];
tmpMatrix[8]=-tmpMatrix[8];
tmpMatrix[9]=-tmpMatrix[9];
tmpMatrix=jnt->LocalMatrix*tmpMatrix;
// IRR_TEST_BROKEN_QUATERNION_USE: TODO - switched from tmpMatrix to tmpMatrix.getTransposed() for downward compatibility.
// Not tested so far if this was correct or wrong before quaternion fix!
k->rotation = core::quaternion(tmpMatrix.getTransposed());
}
// get translation keyframes
const u16 numTranslationKeyframes = pJoint->NumTranslationKeyframes;
for (j=0; j<numTranslationKeyframes; ++j)
{
memcpy(kf, pPtr, sizeof(MS3DKeyframe));
//printf("translation kf = %p (%d)\n", kf, (int)((long long)kf % 4));
#ifdef __BIG_ENDIAN__
kf->Time = os::Byteswap::byteswap(kf->Time);
for (u32 l=0; l<3; ++l)
kf->Parameter[l] = os::Byteswap::byteswap(kf->Parameter[l]);
#endif
pPtr += sizeof(MS3DKeyframe);
if (pPtr > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found.", file->getFileName(), ELL_ERROR);
return false;
}
ISkinnedMesh::SPositionKey *k=AnimatedMesh->addPositionKey(jnt);
k->frame = kf->Time * framesPerSecond-1;
k->position = core::vector3df
(kf->Parameter[0]+pJoint->Translation[0],
kf->Parameter[1]+pJoint->Translation[1],
-kf->Parameter[2]-pJoint->Translation[2]);
}
delete kf;
delete pJoint;
}
core::array<MS3DVertexWeights> vertexWeights;
f32 weightFactor=0;
if (jointCount && (pHeader->Version == 4) && (pPtr < buffer+fileSize))
{
s32 subVersion = *(s32*)pPtr; // comment subVersion, always 1
#ifdef __BIG_ENDIAN__
subVersion = os::Byteswap::byteswap(subVersion);
#endif
pPtr += sizeof(s32);
for (u32 j=0; j<4; ++j) // four comment groups
{
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Skipping comment group", core::stringc(j+1).c_str());
#endif
u32 numComments = *(u32*)pPtr;
#ifdef __BIG_ENDIAN__
numComments = os::Byteswap::byteswap(numComments);
#endif
pPtr += sizeof(u32);
for (i=0; i<numComments; ++i)
{
// according to scorpiomidget this field does
// not exist for model comments. So avoid to
// read it
if (j!=3)
pPtr += sizeof(s32); // index
s32 commentLength = *(s32*)pPtr;
#ifdef __BIG_ENDIAN__
commentLength = os::Byteswap::byteswap(commentLength);
#endif
pPtr += sizeof(s32);
pPtr += commentLength;
}
if (pPtr > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found.", file->getFileName(), ELL_ERROR);
return false;
}
}
if (pPtr < buffer+fileSize)
{
subVersion = *(s32*)pPtr; // vertex subVersion, 1 or 2
#ifdef __BIG_ENDIAN__
subVersion = os::Byteswap::byteswap(subVersion);
#endif
if (subVersion==1)
weightFactor=1.f/255.f;
else
weightFactor=1.f/100.f;
pPtr += sizeof(s32);
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Reading vertex weights");
#endif
// read vertex weights, ignoring data 'extra' from 1.8.2
vertexWeights.reallocate(numVertices);
const char offset = (subVersion==1)?6:10;
for (i=0; i<numVertices; ++i)
{
vertexWeights.push_back(*(MS3DVertexWeights*)pPtr);
pPtr += offset;
}
if (pPtr > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found.", file->getFileName(), ELL_ERROR);
return false;
}
}
if (pPtr < buffer+fileSize)
{
subVersion = *(s32*)pPtr; // joint subVersion, 1 or 2
#ifdef __BIG_ENDIAN__
subVersion = os::Byteswap::byteswap(subVersion);
#endif
pPtr += sizeof(s32);
// skip joint colors
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Skip joint color");
#endif
pPtr += 3*sizeof(float)*jointCount;
if (pPtr > buffer+fileSize)
{
delete [] buffer;
os::Printer::log("Loading failed. Corrupted data found", file->getFileName(), ELL_ERROR);
return false;
}
}
if (pPtr < buffer+fileSize)
{
subVersion = *(s32*)pPtr; // model subVersion, 1 or 2
#ifdef __BIG_ENDIAN__
subVersion = os::Byteswap::byteswap(subVersion);
#endif
pPtr += sizeof(s32);
#ifdef _IRR_DEBUG_MS3D_LOADER_
os::Printer::log("Skip model extra information");
#endif
// now the model extra information would follow
// we also skip this for now
}
}
//find parent of every joint
for (u32 jointnum=0; jointnum<AnimatedMesh->getAllJoints().size(); ++jointnum)
{
for (u32 j2=0; j2<AnimatedMesh->getAllJoints().size(); ++j2)
{
if (jointnum != j2 && parentNames[jointnum] == AnimatedMesh->getAllJoints()[j2]->Name )
{
AnimatedMesh->getAllJoints()[j2]->Children.push_back(AnimatedMesh->getAllJoints()[jointnum]);
break;
}
}
}
// create vertices and indices, attach them to the joints.
video::S3DVertex v;
core::array<video::S3DVertex> *Vertices;
core::array<u16> Indices;
for (i=0; i<numTriangles; ++i)
{
u32 tmp = groups[triangles[i].GroupIndex].MaterialIdx;
Vertices = &AnimatedMesh->getMeshBuffers()[tmp]->Vertices_Standard;
for (s32 j = 2; j!=-1; --j)
{
const u32 vertidx = triangles[i].VertexIndices[j];
v.TCoords.X = triangles[i].S[j];
v.TCoords.Y = triangles[i].T[j];
v.Normal.X = triangles[i].VertexNormals[j][0];
v.Normal.Y = triangles[i].VertexNormals[j][1];
v.Normal.Z = triangles[i].VertexNormals[j][2];
if(triangles[i].GroupIndex < groups.size() &&
groups[triangles[i].GroupIndex].MaterialIdx < AnimatedMesh->getMeshBuffers().size())
v.Color = AnimatedMesh->getMeshBuffers()[groups[triangles[i].GroupIndex].MaterialIdx]->Material.DiffuseColor;
else
v.Color.set(255,255,255,255);
v.Pos.X = vertices[vertidx].Vertex[0];
v.Pos.Y = vertices[vertidx].Vertex[1];
v.Pos.Z = vertices[vertidx].Vertex[2];
// check if we already have this vertex in our vertex array
s32 index = -1;
for (u32 iV = 0; iV < Vertices->size(); ++iV)
{
if (v == (*Vertices)[iV])
{
index = (s32)iV;
break;
}
}
if (index == -1)
{
index = Vertices->size();
const u32 matidx = groups[triangles[i].GroupIndex].MaterialIdx;
if (vertexWeights.size()==0)
{
const s32 boneid = vertices[vertidx].BoneID;
if ((u32)boneid < AnimatedMesh->getAllJoints().size())
{
ISkinnedMesh::SWeight *w=AnimatedMesh->addWeight(AnimatedMesh->getAllJoints()[boneid]);
w->buffer_id = matidx;
w->strength = 1.0f;
w->vertex_id = index;
}
}
else if (jointCount) // new weights from 1.8.x
{
f32 sum = 1.0f;
s32 boneid = vertices[vertidx].BoneID;
if (((u32)boneid < AnimatedMesh->getAllJoints().size()) && (vertexWeights[vertidx].weights[0] != 0))
{
ISkinnedMesh::SWeight *w=AnimatedMesh->addWeight(AnimatedMesh->getAllJoints()[boneid]);
w->buffer_id = matidx;
sum -= (w->strength = vertexWeights[vertidx].weights[0]*weightFactor);
w->vertex_id = index;
}
boneid = vertexWeights[vertidx].boneIds[0];
if (((u32)boneid < AnimatedMesh->getAllJoints().size()) && (vertexWeights[vertidx].weights[1] != 0))
{
ISkinnedMesh::SWeight *w=AnimatedMesh->addWeight(AnimatedMesh->getAllJoints()[boneid]);
w->buffer_id = matidx;
sum -= (w->strength = vertexWeights[vertidx].weights[1]*weightFactor);
w->vertex_id = index;
}
boneid = vertexWeights[vertidx].boneIds[1];
if (((u32)boneid < AnimatedMesh->getAllJoints().size()) && (vertexWeights[vertidx].weights[2] != 0))
{
ISkinnedMesh::SWeight *w=AnimatedMesh->addWeight(AnimatedMesh->getAllJoints()[boneid]);
w->buffer_id = matidx;
sum -= (w->strength = vertexWeights[vertidx].weights[2]*weightFactor);
w->vertex_id = index;
}
boneid = vertexWeights[vertidx].boneIds[2];
if (((u32)boneid < AnimatedMesh->getAllJoints().size()) && (sum > 0.f))
{
ISkinnedMesh::SWeight *w=AnimatedMesh->addWeight(AnimatedMesh->getAllJoints()[boneid]);
w->buffer_id = matidx;
w->strength = sum;
w->vertex_id = index;
}
// fallback, if no bone chosen. Seems to be an error in the specs
boneid = vertices[vertidx].BoneID;
if ((sum == 1.f) && ((u32)boneid < AnimatedMesh->getAllJoints().size()))
{
ISkinnedMesh::SWeight *w=AnimatedMesh->addWeight(AnimatedMesh->getAllJoints()[boneid]);
w->buffer_id = matidx;
w->strength = 1.f;
w->vertex_id = index;
}
}
Vertices->push_back(v);
}
Indices.push_back(index);
}
}
//create groups
s32 iIndex = -1;
for (i=0; i<groups.size(); ++i)
{
SGroup& grp = groups[i];
if (grp.MaterialIdx >= AnimatedMesh->getMeshBuffers().size())
grp.MaterialIdx = 0;
core::array<u16>& indices = AnimatedMesh->getMeshBuffers()[grp.MaterialIdx]->Indices;
for (u32 k=0; k < grp.VertexIds.size(); ++k)
for (u32 l=0; l<3; ++l)
indices.push_back(Indices[++iIndex]);
}
delete [] buffer;
delete [] triangles;
delete [] vertices;
return true;
}
core::stringc CMS3DMeshFileLoader::stripPathFromString(const core::stringc& inString, bool returnPath) const
{
s32 slashIndex=inString.findLast('/'); // forward slash
s32 backSlash=inString.findLast('\\'); // back slash
if (backSlash>slashIndex) slashIndex=backSlash;
if (slashIndex==-1)//no slashes found
{
if (returnPath)
return core::stringc(); //no path to return
else
return inString;
}
if (returnPath)
return inString.subString(0, slashIndex + 1);
else
return inString.subString(slashIndex+1, inString.size() - (slashIndex+1));
}
} // end namespace scene
} // end namespace irr
#endif
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