public static ushort[] Optimize(ushort[] triangles)
{
fixed(ushort *p = &triangles[0])
{
SetStitchStrips(true);
PrimitiveGroup *pg = null;
ushort num = 0;
bool rc = GenerateStrips(p, (uint)triangles.Length, &pg, &num, false);
if (!rc)
{
throw new Exception();
}
try
{
if (num != 1)
{
throw new Exception();
}
if (pg[0].type != PrimType.PT_STRIP)
{
throw new Exception();
}
ushort[] nidx = new ushort[pg[0].numIndices];
for (int i = 0; i < nidx.Length; ++i)
{
nidx[i] = pg[0].indices[i];
}
return(nidx);
}
finally
{
DeletePrimitiveGroup(pg);
}
}
}
/// <summary>
/// Generate triangle strips from the given triangle indices.
/// </summary>
/// <param name="triangles">The array containing the triangle indices.</param>
/// <returns>Tri-stripped triangle indices</returns>
public static ushort[] GenerateStrips(ushort[] triangles)
{
fixed(ushort *p = &triangles[0])
{
PrimitiveGroup *primGroup = null;
ushort numPrimGroups = 0;
bool success = GenerateStrips(p, (uint)triangles.Length, &primGroup, &numPrimGroups);
if (!success)
{
throw new Exception("Failed to generate triangle strips!");
}
try
{
if (numPrimGroups != 1)
{
throw new Exception("More than 1 primitive group was returned");
}
if (primGroup[0].type != PrimType.PT_STRIP)
{
throw new Exception("Returned primitive group isn't triangle stripped!");
}
ushort[] strippedIndices = new ushort[primGroup[0].numIndices];
for (int i = 0; i < strippedIndices.Length; ++i)
{
strippedIndices[i] = primGroup[0].indices[i];
}
return(strippedIndices);
}
finally
{
DeletePrimitiveGroups(primGroup, numPrimGroups);
}
}
}
public extern static void DeletePrimitiveGroups(PrimitiveGroup *primGroups, ushort numGroups);
public extern static void RemapIndices(PrimitiveGroup *in_primGroups, ushort numGroups, ushort numVerts, PrimitiveGroup **remappedGroups);
public extern static void DeletePrimitiveGroup(PrimitiveGroup *primGroups);