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();
}
}
/*************
* DESCRIPTION: read a material-chunk
* INPUT: pointer to chunk
* OUTPUT: -
*************/
static void ParsePropMat(HANDLER_DATA *data, CHUNK *mainchunk)
{
CHUNK chunk;
SURFACE *surf;
float perc;
COLOR color, diffuse;
char buf[80];
surf = data->link->SurfaceAdd(data->rc);
if (!surf)
{
data->err = ERR_MEM;
return;
}
do
{
BeginChunk(data, &chunk);
switch (chunk.id)
{
case ID_PROPNAME:
ReadASCIIZ(data, buf);
if (!data->link->SurfaceName(data->rc, surf,buf))
{
data->err = ERR_MEM;
return;
}
break;
case ID_AMBIENT:
ParseColor(data, &color);
data->link->SurfaceAmbient(data->rc, surf,color.r,color.g,color.b);
break;
case ID_DIFFUSE:
ParseColor(data, &diffuse);
data->link->SurfaceDiffuse(data->rc, surf,diffuse.r,diffuse.g,diffuse.b);
break;
case ID_SPECULAR:
ParseColor(data, &color);
data->link->SurfaceSpecular(data->rc, surf,color.r,color.g,color.b);
break;
case ID_SHININESS:
perc = ParsePercentage(data);
data->link->SurfaceRefPhong(data->rc, surf,perc*100.f);
break;
case ID_TRANSPARENCY:
perc = ParsePercentage(data);
data->link->SurfaceTranspar(data->rc, surf,perc*diffuse.r,perc*diffuse.g,perc*diffuse.b);
break;
}
EndChunk(data, &chunk);
}
while (INCHUNK);
}
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);
}
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;
}
/*************
* DESCRIPTION: -
* INPUT: pointer to chunk
* OUTPUT: -
*************/
static void ParseNamedObject(HANDLER_DATA *data, CHUNK *mainchunk)
{
CHUNK chunk;
TRIANGLE *triangle;
TRILIST *ph1,*ph2;
float angle;
UWORD p1, p2, p3;
UWORD *edges;
int i, h;
ReadASCIIZ(data, data->ObjName);
do
{
BeginChunk(data, &chunk);
switch (chunk.id)
{
case ID_TRIANGLE:
ParseTriObject(data, &chunk);
break;
}
EndChunk(data, &chunk);
}
while (INCHUNK);
if (data->TriList && (data->link->type == LINK_RENDERER))
{
// go through all vertices and calculate normals (only for renderer)
for (i = 0; i < data->pointcount; i++)
{
data->VertNorms[i].x = data->VertNorms[i].y = data->VertNorms[i].z = 0.f;
ph1 = data->TriList[i];
while (ph1)
{
for (ph2 = ph1->next; ph2 != NULL; ph2 = ph2->next)
{
if (!ph1->flag || !ph2->flag)
{
// test angle between two triangles
angle = VecAngle(data->TriNorms[ph1->tri], data->TriNorms[ph2->tri]);
// if (angle < 2*PI && angle > /*cos_*/smooth_angle)
if (angle >0 && angle < /*cos_*/data->smooth_angle)
{
if (!ph1->flag)
{
VecAdd(&data->VertNorms[i], &data->TriNorms[ph1->tri], &data->VertNorms[i]);
ph1->flag = TRUE;
data->TriSmooth[ph1->tri] = TRUE;
}
if (!ph2->flag)
{
VecAdd(&data->VertNorms[i], &data->TriNorms[ph2->tri], &data->VertNorms[i]);
ph2->flag = TRUE;
data->TriSmooth[ph2->tri] = TRUE;
}
}
}
}
ph2 = ph1;
ph1 = ph1->next;
delete ph2;
}
VecNormalize(&data->VertNorms[i]);
}
}
if (data->face)
{
data->link->ObjectBegin(data->rc);
data->defaultsurface = data->link->SurfaceAdd(data->rc);
if (!data->defaultsurface)
{
data->err = ERR_MEM;
return;
}
data->link->SurfaceName(data->rc, data->defaultsurface, "default");
data->link->SurfaceDiffuse(data->rc, data->defaultsurface, 0.9f, 0.9f, 0.9f);
data->link->SurfaceAmbient(data->rc, data->defaultsurface, 0.1f, 0.1f, 0.1f);
data->link->SurfaceRefPhong(data->rc, data->defaultsurface, 49.f);
triangle = data->link->TriangleAdd(data->rc, data->facecount,data->defaultsurface,data->mainactor);
if (!triangle)
{
data->err = ERR_MEM;
return;
}
if (data->link->type == LINK_SCENARIO)
{ // modeler needs points,edges and faces seperate
if (data->link->TriangleAddPoints(data->rc, data->pointcount,data->points) == -1)
{
data->err = ERR_MEM;
return;
}
edges = new UWORD[data->facecount*6];
if (!edges)
{
data->err = ERR_MEM;
return;
}
for (i = 0; i < data->facecount; i++)
{
h = i*6;
edges[h++] = data->face[i].p1;
edges[h++] = data->face[i].p2;
edges[h++] = data->face[i].p2;
edges[h++] = data->face[i].p3;
edges[h++] = data->face[i].p3;
edges[h++] = data->face[i].p1;
}
if (data->link->TriangleAddEdges(data->rc, data->facecount*3,edges) == -1)
{
delete edges;
data->err = ERR_MEM;
return;
}
delete edges;
}
for (i = 0; i < data->facecount; i++)
{
p1 = data->face[i].p1;
p2 = data->face[i].p3;
p3 = data->face[i].p2;
if(data->replacesurface)
data->link->TriangleSurface(data->rc, triangle, data->replacesurface);
else
{
if(!data->material[i])
data->link->TriangleSurface(data->rc, triangle, data->defaultsurface);
else
data->link->TriangleSurface(data->rc, triangle, data->material[i]);
}
if (data->link->type == LINK_SCENARIO)
{ // modeler needs edges
data->link->TriangleSetEdges(data->rc, triangle,i*3,i*3+1,i*3+2);
}
else
{
// raystorm renderer needs triangles and normals
data->link->TrianglePoints(data->rc, triangle,&data->points[p1],&data->points[p2],&data->points[p3]);
if (!VecZero(data->TriNorms[i]))
{
// generate smooth triangle when smooth flag is set
if (data->TriSmooth[i])
{
data->link->TriangleVNorm(data->rc, triangle,
VecZero(data->VertNorms[p1]) ? &data->TriNorms[i] : &data->VertNorms[p1],
VecZero(data->VertNorms[p2]) ? &data->TriNorms[i] : &data->VertNorms[p2],
VecZero(data->VertNorms[p3]) ? &data->TriNorms[i] : &data->VertNorms[p3]);
}
}
if(data->mapping)
{
data->link->TriangleUV(data->rc, triangle,
&data->mapping[p1], &data->mapping[p2], &data->mapping[p3]);
}
}
// next triangle
triangle = data->link->TriangleGetNext(data->rc, triangle);
}
data->link->ObjectEnd(data->rc);
}
CleanupMesh(data);
}
/*************
* DESCRIPTION: read faces of object
* INPUT: pointer to chunk
* OUTPUT: -
*************/
static void ParseFaces(HANDLER_DATA *data, CHUNK *mainchunk)
{
CHUNK chunk;
UWORD i, matcount, index, p1, p2, p3;
VECTOR e1, e2;
SURFACE *s;
TRILIST *hp;
char buf[80];
ReadWord(data, (WORD *)&data->facecount, 1); // read number of faces
if (data->facecount == 0)
return;
data->face = new FACE3DS[data->facecount];
if (!data->face)
{
data->err = ERR_MEM;
return;
}
if (!data->replacesurface)
{
data->material = (SURFACE **)malloc(sizeof(SURFACE *)*data->facecount);
if (!data->material)
{
data->err = ERR_MEM;
return;
}
}
ReadWord(data, (WORD *)data->face, 4*data->facecount); // read faces
if (data->link->type == LINK_RENDERER)
{
// do it for renderer only
data->VertNorms = new VECTOR[data->pointcount];
if (!data->VertNorms)
{
data->err = ERR_MEM;
return;
}
data->TriNorms = new VECTOR[data->facecount];
if (!data->TriNorms)
{
data->err = ERR_MEM;
return;
}
memset(data->VertNorms, 0, sizeof(VECTOR)*data->pointcount); // Init normals
data->TriSmooth = new UBYTE[data->facecount];
if (!data->TriSmooth)
{
data->err = ERR_MEM;
return;
}
for (i = 0; i < data->facecount; i++)
{
if (data->replacesurface)
data->material[i] = data->replacesurface;
else
data->material[i] = NULL;
data->TriSmooth[i] = FALSE;
// get three points for the triangle
p1 = data->face[i].p1;
p2 = data->face[i].p3;
p3 = data->face[i].p2;
hp = new TRILIST;
if (!hp)
{
data->err = ERR_MEM;
return;
}
hp->next = data->TriList[p1];
hp->tri = i;
hp->flag = FALSE;
data->TriList[p1] = hp;
hp = new TRILIST;
if (!hp)
{
data->err = ERR_MEM;
return;
}
hp->next = data->TriList[p2];
hp->tri = i;
hp->flag = FALSE;
data->TriList[p2] = hp;
hp = new TRILIST;
if (!hp)
{
data->err = ERR_MEM;
return;
}
hp->next = data->TriList[p3];
hp->tri = i;
hp->flag = FALSE;
data->TriList[p3] = hp;
// calculate normal of triangle
VecSub(&data->points[p3], &data->points[p1], &e1);
VecSub(&data->points[p2], &data->points[p1], &e2);
VecNormCross(&e1, &e2, &data->TriNorms[i]);
}
}
do
{
BeginChunk(data, &chunk);
switch (chunk.id)
{
case ID_MSHMATGROUP:
if (!data->replacesurface)
{
ReadASCIIZ(data, buf);
s = data->link->SurfaceGetByName(data->rc, buf);
ReadWord(data, (WORD*)&matcount, 1);
for (i = 0; i < matcount; i++)
{
ReadWord(data, (WORD*)&index, 1);
data->material[index] = s;
}
}
break;
case ID_SMOOTHGROUP: // no info about this group
break;
}
EndChunk(data, &chunk);
}
while (INCHUNK);
}
