public void decode(ref List <Mesh> meshList)
{
if (decoded)
{
throw new Exception("Ctm File got already decoded");
}
decoded = true;
if (input.readLittleInt() != OCTM)
{
throw new BadFormatException("The CTM file doesn't start with the OCTM tag!");
}
int formatVersion = input.readLittleInt();
int methodTag = input.readLittleInt();
MeshInfo mi = new MeshInfo(input.readLittleInt(), //vertex count
input.readLittleInt(), //triangle count
input.readLittleInt(), //uvmap count
input.readLittleInt(), //attribute count
input.readLittleInt()); //flags
comment = input.readString();
// Uncompress from stream
Mesh ctmMesh = null;
foreach (MeshDecoder md in DECODER)
{
if (md.isFormatSupported(methodTag, formatVersion))
{
ctmMesh = md.decode(mi, input);
break;
}
}
if (ctmMesh == null)
{
throw new IOException("No sutible decoder found for Mesh of compression type: " + unpack(methodTag) + ", version " + formatVersion);
}
// Check mesh integrity
ctmMesh.checkIntegrity();
// Unity only support maximum 65534 vertices per mesh. So large meshes need to be splitted.
if (ctmMesh.vertices.Length > maxNumVerticesPerMesh * 3)
{
SplitMesh(ctmMesh, ref meshList);
}
else
{
meshList.Add(ctmMesh);
}
//return m;
}
private AttributeData readUVData(int vertCount, CtmInputStream input)
{
String name = input.readString();
String matname = input.readString();
float[] data = readFloatArray(input, vertCount, Mesh.CTM_UV_ELEMENT_COUNT);
return(new AttributeData(name, matname, AttributeData.STANDARD_UV_PRECISION, data));
}
private AttributeData readUVData(int vertCount, CtmInputStream input)
{
name = input.readString();
matname = input.readString();
// Array.Clear(UVdataArray, 0, UVdataArray.Length);
UVdataArray = readFloatArray(input, vertCount, Mesh.CTM_UV_ELEMENT_COUNT);
return(new AttributeData(name, matname, AttributeData.STANDARD_UV_PRECISION, UVdataArray));
}
private AttributeData readAttrData(int vertCount, CtmInputStream input)
{
String name = input.readString();
float[] data = readFloatArray(input, vertCount, Mesh.CTM_ATTR_ELEMENT_COUNT);
return new AttributeData(name, null, AttributeData.STANDARD_PRECISION, data);
}
private AttributeData readUvData(CtmInputStream input, int vcount)
{
checkTag(input.readLittleInt(), TEXC);
String name = input.readString();
String material = input.readString();
float precision = input.readLittleFloat();
if (precision <= 0f)
{
throw new InvalidDataException("A uv precision value <= 0.0 was read");
}
int[] intCoords = input.readPackedInts(vcount, Mesh.CTM_UV_ELEMENT_COUNT, true);
float[] data = restoreUVCoords(precision, intCoords);
return(new AttributeData(name, material, precision, data));
}
private AttributeData readAttribute(CtmInputStream input, int vc)
{
checkTag(input.readLittleInt(), ATTR);
String name = input.readString();
float precision = input.readLittleFloat();
if (precision <= 0f) {
throw new InvalidDataException("An attribute precision value <= 0.0 was read");
}
int[] intData = input.readPackedInts(vc, Mesh.CTM_ATTR_ELEMENT_COUNT, true);
float[] data = restoreAttribs(precision, intData);
return new AttributeData(name, null, precision, data);
}
public Mesh decode()
{
if (decoded)
{
throw new Exception("Ctm File got already decoded");
}
decoded = true;
if (input.readLittleInt() != OCTM)
{
throw new BadFormatException("The CTM file doesn't start with the OCTM tag!");
}
int formatVersion = input.readLittleInt();
int methodTag = input.readLittleInt();
MeshInfo mi = new MeshInfo(input.readLittleInt(), //vertex count
input.readLittleInt(), //triangle count
input.readLittleInt(), //uvmap count
input.readLittleInt(), //attribute count
input.readLittleInt()); //flags
comment = input.readString();
// Uncompress from stream
Mesh m = null;
foreach (MeshDecoder md in DECODER)
{
if (md.isFormatSupported(methodTag, formatVersion))
{
m = md.decode(mi, input);
break;
}
}
if (m == null)
{
throw new IOException("No sutible decoder found for Mesh of compression type: " + unpack(methodTag) + ", version " + formatVersion);
}
// Check mesh integrity
m.checkIntegrity();
return(m);
}
private AttributeData readAttribute(CtmInputStream input, int vc)
{
checkTag(input.readLittleInt(), ATTR);
String name = input.readString();
float precision = input.readLittleFloat();
if (precision <= 0f)
{
throw new InvalidDataException("An attribute precision value <= 0.0 was read");
}
int[] intData = input.readPackedInts(vc, Mesh.CTM_ATTR_ELEMENT_COUNT, true);
float[] data = restoreAttribs(precision, intData);
return(new AttributeData(name, null, precision, data));
}
private AttributeData readUvData(CtmInputStream input, int vcount)
{
checkTag(input.readLittleInt(), TEXC);
String name = input.readString();
String material = input.readString();
float precision = input.readLittleFloat();
if (precision <= 0f) {
throw new InvalidDataException("A uv precision value <= 0.0 was read");
}
int[] intCoords = input.readPackedInts(vcount, Mesh.CTM_UV_ELEMENT_COUNT, true);
float[] data = restoreUVCoords(precision, intCoords);
return new AttributeData(name, material, precision, data);
}
