private float[] readVertices(CtmInputStream input, Grid grid, int vcount, float precision)
{
checkTag(input.readLittleInt(), VERT);
int[] intVertices = input.readPackedInts(vcount, Mesh.CTM_POSITION_ELEMENT_COUNT, false);
checkTag(input.readLittleInt(), GIDX);
int[] gridIndices = input.readPackedInts(vcount, 1, false);
for (int i = 1; i < vcount; i++)
{
gridIndices[i] += gridIndices[i - 1];
}
return(CommonAlgorithm.restoreVertices(intVertices, gridIndices, grid, precision));
}
public override void encode(Mesh m, CtmOutputStream output)
{
Grid grid = setupGrid(m.vertices);
SortableVertex[] sorted = sortVertices(grid, m.vertices);
int[] vdeltas = makeVertexDeltas(m.vertices, sorted, grid);
int[] gridIndicies = new int[m.getVertexCount()];
gridIndicies [0] = sorted [0].gridIndex;
for (int i = 1; i < m.getVertexCount(); ++i)
{
gridIndicies [i] = sorted [i].gridIndex - sorted [i - 1].gridIndex;
}
output.writeLittleInt(MG2Decoder.MG2_HEADER_TAG);
output.writeLittleFloat(vertexPrecision);
output.writeLittleFloat(normalPrecision);
grid.writeToStream(output);
output.writeLittleInt(MeshDecoder.VERT);
output.writePackedInts(vdeltas, m.getVertexCount(), Mesh.CTM_POSITION_ELEMENT_COUNT, false);
output.writeLittleInt(MG2Decoder.GIDX);
output.writePackedInts(gridIndicies, m.getVertexCount(), 1, false);
output.writeLittleInt(MeshDecoder.INDX);
int[] indices = reIndexIndices(sorted, m.indices);
rearrangeTriangles(indices);
//write indicies
{
int[] deltas = new int[indices.Length];
Array.Copy(indices, deltas, indices.Length);
makeIndexDeltas(deltas);
output.writePackedInts(deltas, m.getTriangleCount(), 3, false);
}
if (m.hasNormals())
{
for (int i = 1; i < m.getVertexCount(); i++)
{
gridIndicies [i] += gridIndicies [i - 1];
}
float[] restoredv = CommonAlgorithm.restoreVertices(vdeltas, gridIndicies, grid, vertexPrecision);
output.writeLittleInt(MeshDecoder.NORM);
int[] intNormals = makeNormalDeltas(restoredv, m.normals, indices, sorted);
output.writePackedInts(intNormals, m.getVertexCount(), Mesh.CTM_NORMAL_ELEMENT_COUNT, false);
}
foreach (AttributeData ad in m.texcoordinates)
{
output.writeLittleInt(MeshDecoder.TEXC);
output.writeString(ad.name);
output.writeString(ad.materialName);
output.writeLittleFloat(ad.precision);
int[] deltas = makeUVCoordDeltas(ad, sorted);
output.writePackedInts(deltas, m.getVertexCount(), Mesh.CTM_UV_ELEMENT_COUNT, true);
}
foreach (AttributeData ad in m.attributs)
{
output.writeLittleInt(MeshDecoder.ATTR);
output.writeString(ad.name);
output.writeLittleFloat(ad.precision);
int[] deltas = makeAttribDeltas(ad, sorted);
output.writePackedInts(deltas, m.getVertexCount(), Mesh.CTM_ATTR_ELEMENT_COUNT, true);
}
}
