/// <summary>
/// Gets the material with the specified usage that is attached to this material.
/// </summary>
protected internal override void OnResolveMaterialPart(MaterialUsage usage, MaterialPart existingInstance)
{
var result = ((MaterialPaintGroup)existingInstance);
var srcCount = materialParts.Count;
var destCount = result.materialParts.Count;
if (srcCount > 0 && destCount > 0)
{
var src = 0;
var dest = 0;
var srcPart = materialParts[0];
var destPart = result.materialParts[0];
var srcType = srcPart.GetType();
var destType = destPart.GetType();
// Source material parts is a super set of destination material parts.
while (dest < destCount)
{
destPart = result.materialParts[dest++];
destType = destPart.GetType();
while (src < srcCount)
{
srcPart = materialParts[src++];
srcType = srcPart.GetType();
if (srcType == destType)
{
srcPart.OnResolveMaterialPart(usage, destPart);
break;
}
}
}
}
}
/// <summary>
/// Gets the material with the specified usage that is attached to this material.
/// </summary>
protected internal virtual void OnResolveMaterialPart(MaterialUsage usage, MaterialPart existingInstance)
{
}