public VertexElementInfo(CommonVertexSemantic semantic, int arrayIndex, CommonFormat format, int offset, int stride)
{
CommonSemantic = semantic;
Semantic = semantic.ToString();
ArrayIndex = arrayIndex;
Format = format;
Offset = offset;
Stride = stride;
}
public VertexElementInfo(string semantic, int arrayIndex, CommonFormat format, int offset, int stride)
{
CommonSemantic = CommonVertexSemantic.Undefined;
Semantic = semantic;
ArrayIndex = arrayIndex;
Format = format;
Offset = offset;
Stride = stride;
}
private static T[] ExtractVertexElements <T>(IFlexibleModelVertexSet vertexSet, CommonVertexSemantic semantic, CommonFormat expectedFormat, Func <IntPtr, T> decode)
{
var elementInfo = vertexSet.ElementInfos.FirstOrDefault(x => x.CommonSemantic == semantic);
if (elementInfo == null)
{
return(null);
}
if (elementInfo.Format != expectedFormat)
{
throw new NotImplementedException($"Only '{expectedFormat}' format is supported for '{typeof(T).Name}' elems at the moment.");
}
var arraySubrange = vertexSet.ArraySubranges[elementInfo.ArrayIndex];
var vertexCount = arraySubrange.Length / elementInfo.Stride;
var elements = new T[vertexCount];
var pCgVertices = arraySubrange.RawDataResource.Map() + arraySubrange.StartOffset;
var pCurrentElem = pCgVertices + elementInfo.Offset;
for (int i = 0; i < vertexCount; i++)
{
elements[i] = decode(pCurrentElem);
pCurrentElem += elementInfo.Stride;
}
arraySubrange.RawDataResource.Unmap(false);
return(elements);
}