LColor3 L3DS::ReadColor(const LChunk &chunk)
{
LColor3 col = black;
GotoChunk(chunk);
switch (chunk.id)
{
case COLOR_F:
col.r = ReadFloat();
col.g = ReadFloat();
col.b = ReadFloat();
break;
case COLOR_24:
col.r = ReadByte()/255.0f;
col.g = ReadByte()/255.0f;
col.b = ReadByte()/255.0f;
break;
case LIN_COLOR_F:
col.r = ReadFloat();
col.g = ReadFloat();
col.b = ReadFloat();
break;
case LIN_COLOR_24:
col.r = ReadByte()/255.0f;
col.g = ReadByte()/255.0f;
col.b = ReadByte()/255.0f;
break;
default:
fprintf(stderr, "L3DS::ReadColor - error this is not a color chunk");
}
return col;
}
void L3DS::ReadFaceList(const LChunk &chunk, LMesh &mesh)
{
// variables
unsigned short count, t;
uint i;
LTri tri;
LChunk ch;
char str[20];
//uint mat;
// consistency checks
if (chunk.id != TRI_FACELIST)
{
ErrorMsg("L3DS::ReadFaceList - internal error: wrong chunk passed as parameter");
return;
}
GotoChunk(chunk);
tri.smoothingGroups = 1;
// read the number of faces
count = ReadShort();
mesh.SetTriangleArraySize(count);
for (i=0; i<count; i++)
{
tri.a = ReadShort();
tri.b = ReadShort();
tri.c = ReadShort();
ReadShort();
mesh.SetTri(tri, i);
}
// now read the optional chunks
ch = ReadChunk();
int mat_id;
while (ch.end <= chunk.end)
{
switch (ch.id)
{
case TRI_MAT_GROUP:
ReadASCIIZ(str, 20);
mat_id=0;
if (FindMaterial(str)!=NULL)
mat_id = FindMaterial(str)->GetID();
mesh.AddMaterial(mat_id);
count = ReadShort();
for (i=0; i<count; i++)
{
t = ReadShort();
mesh.GetTri(t).materialId = mat_id;
}
break;
case TRI_SMOOTH_GROUP:
for (i=0; i<mesh.GetTriangleCount(); i++)
mesh.GetTri(i).smoothingGroups = (ulong) ReadInt();
break;
}
SkipChunk(ch);
ch = ReadChunk();
}
}
float L3DS::ReadPercentage(const LChunk &chunk)
{
GotoChunk(chunk);
switch (chunk.id)
{
case INT_PERCENTAGE:
return (ReadShort()/100.0f);
case FLOAT_PERCENTAGE:
return ReadFloat();
}
fprintf(stderr, "L3DS::ReadPercentage - error, the chunk is not a percentage chunk");
return 0;
}
void L3DS::ReadMap(const LChunk &chunk, LMap& map)
{
LChunk child;
char str[20];
GotoChunk(chunk);
child = ReadChunk();
while (child.end <= chunk.end)
{
switch (child.id)
{
case INT_PERCENTAGE:
map.strength = ReadPercentage(child);
break;
case MAT_MAPNAME:
ReadASCIIZ(str, 20);
strcpy(map.mapName, str);
break;
case MAT_MAP_TILING:
map.tiling = ReadShort();
break;
case MAT_MAP_USCALE:
map.uScale = ReadFloat();
break;
case MAT_MAP_VSCALE:
map.vScale = ReadFloat();
break;
case MAT_MAP_UOFFSET:
map.uOffset = ReadFloat();
break;
case MAT_MAP_VOFFSET:
map.vOffset = ReadFloat();
break;
case MAT_MAP_ANG:
map.angle = ReadFloat();
break;
}
SkipChunk(child);
child = ReadChunk();
}
}
void L3DS::ReadKeyframeData(const LChunk &parent)
{
uint frames = 0;
LChunk node_hdr;
node_hdr.id = NODE_HDR;
char str[20];
LMesh *mesh;
GotoChunk(parent);
if (!FindChunk(node_hdr, parent))
return;
GotoChunk(node_hdr);
ReadASCIIZ(str, 19);
mesh = FindMesh(str);
if (mesh == 0)
return;
GotoChunk(parent);
// read the pivot
//LVector3 pivot = zero3;
LChunk pivotchunk;
pivotchunk.id = PIVOT;
if (FindChunk(pivotchunk, parent))
{
GotoChunk(pivotchunk);
/*pivot.x =*/ ReadFloat();
/*pivot.y =*/ ReadFloat();
/*pivot.z =*/ ReadFloat();
}
GotoChunk(parent);
// read frame 0 from the position track
//LVector3 pos = zero3;
frames = 0;
LChunk poschunk;
poschunk.id = POS_TRACK_TAG;
if (FindChunk(poschunk, parent))
{
GotoChunk(poschunk);
// read the trackheader structure
ReadShort();
ReadInt();
ReadInt();
frames = ReadInt();
if (frames > 0)
{
ReadKeyheader();
/*pos.x =*/ ReadFloat();
/*pos.y =*/ ReadFloat();
/*pos.z =*/ ReadFloat();
}
}
GotoChunk(parent);
// now read the rotation track
//LVector4 rot = zero4;
LChunk rotchunk;
rotchunk.id = ROT_TRACK_TAG;
frames = 0;
if (FindChunk(rotchunk, parent))
{
GotoChunk(rotchunk);
// read the trackheader structure
ReadShort();
ReadInt();
ReadInt();
frames = ReadInt();
if (frames > 0)
{
ReadKeyheader();
/*rot.x =*/ ReadFloat();
/*rot.y =*/ ReadFloat();
/*rot.z =*/ ReadFloat();
/*rot.w =*/ ReadFloat();
}
}
GotoChunk(parent);
// now read the scaling chunk
//LVector3 scale;
//scale.x = 1;
//scale.y = 1;
//scale.z = 1;
LChunk scalechunk;
scalechunk.id = SCL_TRACK_TAG;
frames = 0;
if (FindChunk(scalechunk, parent))
{
GotoChunk(scalechunk);
// read the trackheader structure
ReadShort();
ReadInt();
ReadInt();
frames = ReadInt();
if (frames > 0)
{
ReadKeyheader();
/*scale.x =*/ ReadFloat();
/*scale.y =*/ ReadFloat();
/*scale.z =*/ ReadFloat();
}
}
GotoChunk(parent);
}
void L3DS::ReadMaterial(const LChunk &parent)
{
// variables
LChunk chunk;
LChunk child;
char str[30];
LMaterial mat;
short sh;
GotoChunk(parent);
chunk = ReadChunk();
while (chunk.end <= parent.end)
{
switch (chunk.id)
{
case MAT_NAME:
ReadASCIIZ(str, 30);
mat.SetName(str);
break;
case MAT_AMBIENT:
child = ReadChunk();
mat.SetAmbientColor(ReadColor(child));
break;
case MAT_DIFFUSE:
child = ReadChunk();
mat.SetDiffuseColor(ReadColor(child));
break;
case MAT_SPECULAR:
child = ReadChunk();
mat.SetSpecularColor(ReadColor(child));
break;
case MAT_SHININESS:
child = ReadChunk();
mat.SetShininess(ReadPercentage(child));
break;
case MAT_TRANSPARENCY:
child = ReadChunk();
mat.SetTransparency(ReadPercentage(child));
break;
case MAT_SHADING:
sh = ReadShort();
switch (sh)
{
case 0:
mat.SetShadingType(sWireframe);
break;
case 1:
mat.SetShadingType(sFlat);
break;
case 2:
mat.SetShadingType(sGouraud);
break;
case 3:
mat.SetShadingType(sPhong);
break;
case 4:
mat.SetShadingType(sMetal);
break;
}
break;
case MAT_WIRE:
mat.SetShadingType(sWireframe);
break;
case MAT_TEXMAP:
ReadMap(chunk, mat.GetTextureMap1());
break;
case MAT_TEX2MAP:
ReadMap(chunk, mat.GetTextureMap2());
break;
case MAT_OPACMAP:
ReadMap(chunk, mat.GetOpacityMap());
break;
case MAT_BUMPMAP:
ReadMap(chunk, mat.GetBumpMap());
break;
case MAT_SPECMAP:
ReadMap(chunk, mat.GetSpecularMap());
break;
case MAT_REFLMAP:
// AMZ not really a bugfix but it seems to work!
#if 1
ReadMap(chunk, mat.GetReflectionMap());
#else
child = ReadChunk();
mat.GetReflectionMap().strength = ReadPercentage(child);
SkipChunk(child);
child = ReadChunk();
if (child.id != MAT_MAPNAME)
{
fprintf(stderr, "L3DS::ReadMaterial - error, expected chunk not found");
return;
}
ReadASCIIZ(str, 30);
if (strcmp(str, "") == 0)
strcpy(mat.GetReflectionMap().mapName, "auto");
#endif
break;
}
SkipChunk(chunk);
chunk = ReadChunk();
}
m_materials.push_back(mat);
m_materials[m_materials.size()-1].SetID(uint(m_materials.size())-1);
}
void L3DS::ReadMesh(const LChunk &parent)
{
unsigned short count, i;
LVector4 p;
LMatrix4 m;
LVector2 t;
p.w = 1.0f;
LMesh mesh;
mesh.SetName(m_objName);
GotoChunk(parent);
LChunk chunk = ReadChunk();
while (chunk.end <= parent.end)
{
switch (chunk.id)
{
case TRI_VERTEXLIST:
count = ReadShort();
mesh.SetVertexArraySize(count);
for (i=0; i < count; i++)
{
p.x = ReadFloat();
p.y = ReadFloat();
p.z = ReadFloat();
mesh.SetVertex(p, i);
}
break;
case TRI_FACEMAPPING:
count = ReadShort();
if (mesh.GetVertexCount() == 0)
mesh.SetVertexArraySize(count);
for (i=0; i < count; i++)
{
t.x = ReadFloat();
t.y = ReadFloat();
mesh.SetUV(t, i);
}
break;
case TRI_FACELIST:
ReadFaceList(chunk, mesh);
break;
case TRI_MATRIX:
m._11 = ReadFloat();
m._12 = ReadFloat();
m._13 = ReadFloat();
m._21 = ReadFloat();
m._22 = ReadFloat();
m._23 = ReadFloat();
m._31 = ReadFloat();
m._32 = ReadFloat();
m._33 = ReadFloat();
m._41 = ReadFloat();
m._42 = ReadFloat();
m._43 = ReadFloat();
m._14 = 0.0f;
m._24 = 0.0f;
m._34 = 0.0f;
m._44 = 1.0f;
mesh.SetMatrix(m);
break;
default:
break;
}
SkipChunk(chunk);
if (chunk.end >= parent.end)
break;
chunk = ReadChunk();
}
m_meshes.push_back(mesh);
}
bool L3DS::Read3DS()
{
LChunk mainchunk;
LChunk edit;
edit.id = EDIT3DS;
mainchunk = ReadChunk();
if (mainchunk.id != MAIN3DS)
{
fprintf(stderr, "L3DS::Read3DS - wrong file format");
return false;
}
if (!FindChunk(edit, mainchunk))
return false;
LChunk obj;
LChunk ml;
GotoChunk(edit);
obj.id = MAT_ENTRY;
while (FindChunk(obj, edit))
{
ReadMaterial(obj);
SkipChunk(obj);
}
GotoChunk(edit);
obj.id = EDIT_OBJECT;
{
while (FindChunk(obj, edit))
{
ReadASCIIZ(m_objName, 99);
ml = ReadChunk();
if (ml.id == OBJ_TRIMESH)
ReadMesh(ml);
else
if (ml.id == OBJ_LIGHT)
ReadLight(ml);
else
if (ml.id == OBJ_CAMERA)
ReadCamera(ml);
SkipChunk(obj);
}
}
// read the keyframer data here to find out correct object orientation
LChunk keyframer;
keyframer.id = KFDATA;
LChunk objtrack;
objtrack.id = OBJECT_NODE_TAG;
GotoChunk(mainchunk);
if (FindChunk(keyframer, mainchunk))
{ // keyframer chunk is present
GotoChunk(keyframer);
while (FindChunk(objtrack, keyframer))
{
ReadKeyframeData(objtrack);
SkipChunk(objtrack);
}
}
for (uint i=0; i<m_meshes.size(); i++)
m_meshes[i].Optimize(m_optLevel);
m_pos = 0;
strcpy(m_objName, "");
return true;
}
void L3DS::ReadMesh(const LChunk &parent)
{
//ErrorMsg("RND:: Ok, try load mesh...\n");
unsigned short count, i;
LVector4 p;
LMatrix4 m;
LVector2 t;
p.w = 1.0f;
LMesh mesh;
mesh.SetName(m_objName);
GotoChunk(parent);
LChunk chunk = ReadChunk();
while (chunk.end <= parent.end)
{
//ErrorMsg("RND:: Ochunk.end <= parent.end\n");
switch (chunk.id)
{
case TRI_VERTEXLIST:
//ErrorMsg("RND:: case TRI_VERTEXLIST\n");
count = ReadShort();
mesh.SetVertexArraySize(count);
for (i=0; i < count; i++)
{
p.x = ReadFloat();
p.y = ReadFloat();
p.z = ReadFloat();
mesh.SetVertex(p, i);
}
break;
case TRI_FACEMAPPING:
//ErrorMsg("RND:: case TRI_FACEMAPPING\n");
count = ReadShort();
// printf("RND:: ReadShort");
if (count == 0 ) break;
if (mesh.GetVertexCount() == 0)
mesh.SetVertexArraySize(count);
printf("count: %d",count);
for (i=0; i < count; i++)
{
t.x = ReadFloat();
t.y = ReadFloat();
mesh.SetUV(t, i);
// printf("RND:: set: %f %f",t.x,t.y);
}
break;
case TRI_FACELIST:
//ErrorMsg("RND:: case TRI_FACELIST\n");
ReadFaceList(chunk, mesh);
break;
case TRI_MATRIX:
//ErrorMsg("RND:: case TRI_MATRIX\n");
m._11 = ReadFloat();
m._12 = ReadFloat();
m._13 = ReadFloat();
m._21 = ReadFloat();
m._22 = ReadFloat();
m._23 = ReadFloat();
m._31 = ReadFloat();
m._32 = ReadFloat();
m._33 = ReadFloat();
m._41 = ReadFloat();
m._42 = ReadFloat();
m._43 = ReadFloat();
m._14 = 0.0f;
m._24 = 0.0f;
m._34 = 0.0f;
m._44 = 1.0f;
mesh.SetMatrix(m);
break;
default:
break;
}
SkipChunk(chunk);
if (chunk.end >= parent.end)
break;
chunk = ReadChunk();
}
m_meshes.push_back(mesh);
}
