private OpenGLModel load3ds(IOStream fis)
{
OpenGLObject obj = null;
int head_id;
int head_len;
int _siz;
float[] _float;
int[] _pts;
bool done_vertex = false;
bool done_pts = false;
int vertexidx = -1;
int vertexcnt = -1;
String name;
List <OpenGL3DS_Material> matlist; //materials (objects refer to material name)
List <String> objlist; //object names (keyframe data refers to object name)
String objname = "";
int objidx = -1;
OpenGL3DS_Material mat;
String matname = "", fn;
int a, b, keys, u32;
bool ok;
int u16;
OpenGLTranslate trans;
OpenGLRotate rot;
OpenGLScale scale;
OpenGLModel mod;
OpenGLUVMap map;
int mapidx = -1;
int skip = 0;
int parent;
int frameno;
int s;
datapos = 0;
fis.Open(OpenMode.ReadOnly);
data = fis.ReadAll().ToArray();
matlist = new List <OpenGL3DS_Material>();
objlist = new List <String>();
mod = new OpenGLModel();
while (!eof())
{
head_id = readuint16();
head_len = readuint32();
if (head_len == -1)
{
break; //this does happen in some files
}
if (head_len < 6)
{
throw new Exception("head_len < 6 (" + head_len + ")"); //bad file
}
head_len -= 6;
switch (head_id)
{
case 0x4d4d: //main chunk
break;
case 0x3d3d: //mesh chunk
break;
case 0xafff: //material chunk
matname = "";
break;
case 0xa000: //material chunk name
matname = readname(head_len);
break;
case 0xa200: //texture details
break;
case 0xa300: //texture filename
mat = new OpenGL3DS_Material();
fn = readname(head_len);
mat.name = matname;
mat.filename = fn;
matlist.Add(mat);
break;
case 0x4000: //object chunk
objname = readname(-1); //don't skip the whole chunk
if (debug)
{
Console.WriteLine("obj=" + objname);
}
done_vertex = false;
done_pts = false;
break;
case 0x4100: //triangular object chunk
break;
case 0x4110: //vertex list of a polygon
skip = head_len;
if (done_vertex)
{
Console.WriteLine("Warning : 2 vertex lists found for 1 object?"); break;
}
obj = new OpenGLObject();
obj.SetType(GL_TRIANGLES); //3ds only supports triangles
obj.SetName(objname);
mapidx = -1;
mod.ol.Add(obj);
objlist.Add(objname);
_siz = readuint16();
skip -= 2;
vertexidx = obj.GetVertexCount() * 3;
vertexcnt = _siz;
if (_siz == 0)
{
break;
}
_float = new float[_siz * 3];
for (a = 0; a < _siz; a++)
{
for (b = 0; b < 3; b++)
{
_float[a * 3 + b] = readfloat();
skip -= 4;
}
if (debug)
{
// Console.WriteLine(String.format("v=%3.3f,%3.3f,%3.3f", _float[a*3+0] , _float[a*3+1] , _float[a*3+2]));
}
}
obj.AddVertex(_float);
_float = null;
done_vertex = true;
break;
case 0x4120: //Points list
_siz = readuint16();
skip = _siz * 2 * 4;
if (!done_vertex)
{
Console.WriteLine("Warning : pts list before vertex list?"); break;
}
if (done_pts)
{
Console.WriteLine("Warning : 2 pts lists found for 1 object?"); break;
}
if (_siz == 0)
{
break;
}
_pts = new int[3]; //p1,p2,p3,flgs per triangle
for (a = 0; a < _siz; a++)
{
for (b = 0; b < 3; b++)
{
_pts[b] = (short)readuint16();
skip -= 2;
}
readuint16(); //skip flgs
skip -= 2;
obj.AddPoly(_pts);
if (debug)
{
Console.WriteLine("p=" + _pts[0] + "," + _pts[1] + "," + _pts[2]);
}
}
_pts = null;
done_pts = true;
break;
case 0x4130: //object material name
name = readname(head_len);
mapidx++;
map = obj.CreateUVMap();
map.SetName("uvmap" + mapidx);
if (obj != null)
{
//find name in matlist
ok = false;
for (a = 0; a < matlist.Size(); a++)
{
if (matlist.Get(a).name.Equals(name))
{
int idx = mod.AddTexture(matlist.Get(a).filename);
map.SetTextureIndex(idx);
ok = true;
break;
}
}
// if (!ok) throw new Exception("0x4130 : object material name not found in list : " + name);
}
if (debug)
{
Console.WriteLine("mat=" + map.GetTextureIndex());
}
break;
case 0x4140: //texture vertex list (UV)
_siz = readuint16();
skip = _siz * 2 * 4;
if (!done_vertex)
{
Console.WriteLine("Warning:Texture coords (UV) list before vertex list"); break;
}
if (_siz != vertexcnt)
{
Console.WriteLine("Warning:texture list siz != vertex list siz"); break;
}
if (_siz == 0)
{
break;
}
_float = new float[2];
for (a = 0; a < _siz; a++)
{
_float[0] = readfloat(); //U fis okay
skip -= 4;
_float[1] = 1.0f - readfloat(); //V must be inverted
skip -= 4;
obj.AddUV(_float, mapidx);
if (debug)
{
// Console.WriteLine(String.format("t=%3.3f,%3.3f", _float[0] , _float[1]));
}
}
_float = null;
break;
case 0x4160: //obj matrix
//read in 3x3 matrix and show for now
s = 0; //padding to convert to 4x4 matrix
for (a = 0; a < 3 * 3; a++)
{
u32 = readuint32();
if ((a > 0) && (a % 3 == 0))
{
s++;
}
//not sure what this matrix fis for??? But I don't seem to need it
// obj.m.m[a+s] = readfloat();
// if (debug) Console.WriteLine("m=" + obj.m.m[a+s]);
}
obj.GetOrigin().x = readfloat();
obj.GetOrigin().y = readfloat();
obj.GetOrigin().z = readfloat();
if (debug)
{
Console.WriteLine("pos=" + obj.GetOrigin().x + "," + obj.GetOrigin().y + "," + obj.GetOrigin().z);
}
break;
case 0xb000: //keyframe header
break;
case 0xb002: //object node chunk
objidx = -1;
break;
case 0xb010: //keyframe object name
name = readname(-1);
readuint16(); //f1
readuint16(); //f2
parent = readuint16(); //parent
//find name in objlist
objidx = 0;
ok = false;
for (a = 0; a < objlist.Size(); a++)
{
if (objlist.Get(a).Equals(name))
{
ok = true;
break;
}
objidx++;
}
if (!ok)
{
objidx = -1;
}
else
{
obj = mod.ol.Get(objidx);
if (parent != 65535)
{
obj.SetParent(parent);
}
obj = null;
}
//Console.WriteLine("0xb010 : name=" + name + ":objidx=" + objidx + ":parent=" + parent);
break;
case 0xb020: //keyframe pos
skip = head_len;
if (objidx == -1)
{
break;
}
obj = mod.ol.Get(objidx);
u16 = readuint16(); //flgs
skip -= 2;
u32 = readuint32(); //r1
skip -= 4;
u32 = readuint32(); //r2
skip -= 4;
keys = readuint32(); //keys
skip -= 4;
_float = new float[3];
for (a = 0; a < keys; a++)
{
frameno = readuint32(); //frame #
skip -= 4;
u16 = readuint16(); //flgs
skip -= 2;
u32 = 0;
if ((u16 & _3DS_FLG_TENSION) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_CONTINUITY) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_BIAS) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_EASE_TO) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_EASE_FROM) != 0)
{
u32++;
}
if (u32 > 0)
{
datapos += u32 * 4; //all ignored
skip -= u32 * 4;
}
trans = new OpenGLTranslate();
for (b = 0; b < 3; b++)
{
_float[b] = readfloat();
skip -= 4;
}
trans.x = _float[0];
trans.y = _float[1];
trans.z = _float[2];
//Console.WriteLine("pos["+frameno+"]:"+pos.x+","+pos.y+","+pos.z+":flgs="+u16);
obj.GetTranslateMap().Set(frameno, trans);
if (obj.GetMaxFrameCount() < frameno)
{
obj.SetMaxFrameCount(frameno);
}
}
_float = null;
obj = null;
break;
case 0xb021: //keyframe rotate
skip = head_len;
if (objidx == -1)
{
break;
}
obj = mod.ol.Get(objidx);
u16 = readuint16(); //flgs
skip -= 2;
u32 = readuint32(); //r1
skip -= 4;
u32 = readuint32(); //r2
skip -= 4;
keys = readuint32(); //keys
skip -= 4;
_float = new float[4];
for (a = 0; a < keys; a++)
{
frameno = readuint32(); //frame #
skip -= 4;
u16 = readuint16(); //flgs
skip -= 2;
u32 = 0;
if ((u16 & _3DS_FLG_TENSION) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_CONTINUITY) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_BIAS) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_EASE_TO) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_EASE_FROM) != 0)
{
u32++;
}
if (u32 > 0)
{
datapos += u32 * 4; //all ignored
skip -= u32 * 4;
}
rot = new OpenGLRotate();
for (b = 0; b < 4; b++)
{
_float[b] = readfloat();
skip -= 4;
}
rot.angle = _float[0] * 57.2957795f; //convert to degrees
rot.x = _float[1];
rot.y = _float[2];
rot.z = _float[3];
//Console.WriteLine("rot["+frameno+"]:"+rot.angle+","+rot.x+","+rot.y+","+rot.z+":flgs="+u16);
obj.GetRotateMap().Set(frameno, rot);
if (obj.GetMaxFrameCount() < frameno)
{
obj.SetMaxFrameCount(frameno);
}
}
_float = null;
obj = null;
break;
case 0xb022: //keyframe scale
skip = head_len;
if (objidx == -1)
{
break;
}
obj = mod.ol.Get(objidx);
u16 = readuint16(); //flgs
skip -= 2;
u32 = readuint32(); //r1
skip -= 4;
u32 = readuint32(); //r2
skip -= 4;
keys = readuint32(); //keys
skip -= 4;
_float = new float[3];
for (a = 0; a < keys; a++)
{
frameno = readuint32(); //frame #
skip -= 4;
u16 = readuint16(); //flgs
skip -= 2;
u32 = 0;
if ((u16 & _3DS_FLG_TENSION) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_CONTINUITY) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_BIAS) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_EASE_TO) != 0)
{
u32++;
}
if ((u16 & _3DS_FLG_EASE_FROM) != 0)
{
u32++;
}
if (u32 > 0)
{
datapos += u32 * 4; //all ignored
skip -= u32 * 4;
}
scale = new OpenGLScale();
for (b = 0; b < 3; b++)
{
_float[b] = readfloat();
skip -= 4;
}
scale.x = _float[0];
scale.y = _float[1];
scale.z = _float[2];
//Console.WriteLine("scale["+frameno+"]:"+scale.x+","+scale.y+","+scale.z+":flgs="+u16);
obj.GetScaleMap().Set(frameno, scale);
if (obj.GetMaxFrameCount() < frameno)
{
obj.SetMaxFrameCount(frameno);
}
}
_float = null;
obj = null;
break;
default:
skip = head_len;
break;
}
if (skip > 0)
{
datapos += skip;
skip = 0;
}
}
//setup any lights
_siz = mod.ol.Size();
for (a = 0; a < _siz; a++)
{
obj = mod.ol.Get(a);
}
//delete temp lists
matlist.Clear();
objlist.Clear();
return(mod);
}