Mesh _AssembleStandardMesh(ShapeStream shapeStream, Mesh mesh)
{
try
{
if (mesh == null)
mesh = new Mesh();
shapeStream.CheckGuard();
mesh._numFrames = shapeStream.ReadS32();
mesh._numMatFrames = shapeStream.ReadS32();
mesh._parentMesh = shapeStream.ReadS32();
shapeStream.ReadPoint3F(ref mesh._bounds.Min);
shapeStream.ReadPoint3F(ref mesh._bounds.Max);
shapeStream.ReadPoint3F(ref mesh._center);
mesh._radius = shapeStream.ReadF32();
int numVerts = shapeStream.ReadS32();
mesh._verts = mesh._parentMesh < 0 ? shapeStream.ReadPoint3Fs(numVerts) : _shape.Meshes[mesh._parentMesh]._verts;
int numTVerts = shapeStream.ReadS32();
mesh._tverts = mesh._parentMesh < 0 ? shapeStream.ReadPoint2Fs(numTVerts) : _shape.Meshes[mesh._parentMesh]._tverts;
// Version 26 added vertex color and texcoord2.
if (Shape.ReadVersion > 25)
{
int numTVerts2 = shapeStream.ReadS32();
if (numTVerts2 > 0)
{
if (mesh._parentMesh < 0)
mesh._tverts2 = shapeStream.ReadPoint2Fs(numTVerts2);
else
mesh._tverts2 = _shape.Meshes[mesh._parentMesh]._tverts2;
}
int numVColors = shapeStream.ReadS32();
if (numVColors > 0)
{
if (mesh._parentMesh < 0)
mesh._colors = shapeStream.ReadColors(numVColors);
else
mesh._colors = _shape.Meshes[mesh._parentMesh]._colors;
}
}
mesh._norms = mesh._parentMesh < 0 ? shapeStream.ReadPoint3Fs(numVerts) : _shape.Meshes[mesh._parentMesh]._norms;
if (mesh._parentMesh < 0)
shapeStream.ReadU8s(numVerts); // Read past encoded normals
int szPrim;
ushort[] prim16;
int[] prim32;
int szInd;
short[] ind16;
// Version 26 has 32-bit indices.
// We don't, so read them into our 16-bit buffers.
if (Shape.ReadVersion > 25)
{
szPrim = shapeStream.ReadS32();
int[] primIn = shapeStream.ReadS32s(szPrim * 3);
szInd = shapeStream.ReadS32();
int[] indIn = shapeStream.ReadS32s(szInd);
//
prim16 = new ushort[szPrim * 2];
prim32 = new int[szPrim];
int j = 0;
for (int i = 0; i < szPrim; i += 3)
{
prim16[j] = (ushort)primIn[i];
prim16[j + 1] = (ushort)primIn[i + 1];
prim32[j] = primIn[i + 2];
j++;
}
// Copy down the array of indices from 32-bit to 16.
ind16 = new short[szInd];
for (int i = 0; i < szInd; i++)
ind16[i] = (short)indIn[i];
}
else
{
// Copy the _primitives and _indices...how we do this depends on what
// form we want them in when copied...first just get the data
szPrim = shapeStream.ReadS32();
prim16 = shapeStream.ReadU16s(szPrim * 2); // start, numElements
prim32 = shapeStream.ReadS32s(szPrim); // matIndex
szInd = shapeStream.ReadS32();
ind16 = shapeStream.ReadS16s(szInd);
}
// count then Copy...
int cpyPrim, cpyInd;
if (_useTriangles)
_ConvertToTris(prim16, prim32, ind16, szPrim, out cpyPrim, out cpyInd, null, null);
else if (_useOneStrip)
_ConvertToSingleStrip(prim16, prim32, ind16, szPrim, out cpyPrim, out cpyInd, null, null);
else
_LeaveAsMultipleStrips(prim16, prim32, ind16, szPrim, out cpyPrim, out cpyInd, null, null);
mesh._primitives = new DrawPrimitive[cpyPrim];
mesh._indices = new short[cpyInd];
// _primitives and _indices counted and allocated above, now Copy them in
int chkPrim;
int chkInd;
if (_useTriangles)
_ConvertToTris(prim16, prim32, ind16, szPrim, out chkPrim, out chkInd, mesh._primitives, mesh._indices);
else if (_useOneStrip)
_ConvertToSingleStrip(prim16, prim32, ind16, szPrim, out chkPrim, out chkInd, mesh._primitives, mesh._indices);
else
_LeaveAsMultipleStrips(prim16, prim32, ind16, szPrim, out chkPrim, out chkInd, mesh._primitives, mesh._indices);
Assert.Fatal(chkPrim == cpyPrim && chkInd == cpyInd, "TSShapeReader._AssembleStandardMesh - DrawPrimitive conversion error.");
// Read in merge _indices...deprecated
int numMerge = shapeStream.ReadS32();
shapeStream.ReadS16s(numMerge);
mesh._vertsPerFrame = shapeStream.ReadS32();
mesh.SetFlags((Mesh.MeshEnum)shapeStream.ReadU32());
shapeStream.CheckGuard();
}
catch
{ }
return mesh;
}
