public TriangleCallback()
{
_processTriangle = new ProcessTriangleDelegate(ProcessTriangleUnmanaged);
_native = btTriangleCallbackWrapper_new(
Marshal.GetFunctionPointerForDelegate(_processTriangle));
}
public TriangleCallback()
{
_processTriangle = new ProcessTriangleDelegate(ProcessTriangleUnmanaged);
_native = btTriangleCallbackWrapper_new(
Marshal.GetFunctionPointerForDelegate(_processTriangle));
}
public TriangleCallback()
{
_processTriangle = new ProcessTriangleDelegate(ProcessTriangleUnmanaged);
IntPtr native = btTriangleCallbackWrapper_new(
Marshal.GetFunctionPointerForDelegate(_processTriangle));
InitializeUserOwned(native);
}
/// <summary>
/// Construct primitive definitions and pass to provided processors.
/// </summary>
private static void TraversePrimitives(PrimitiveTopology primitiveTopology, int countVertices,
ProcessPointDelegate processPoint, ProcessLineDelegate processLine, ProcessTriangleDelegate processTriangle)
{
switch (primitiveTopology)
{
case PrimitiveTopology.PointList:
for (var i = 0u; i < countVertices; i++)
{
processPoint(i);
}
break;
case PrimitiveTopology.LineList:
for (var i = 0u; i < countVertices; i += 2)
{
processLine(i, i + 1);
}
break;
case PrimitiveTopology.LineStrip:
for (var i = 0u; i < countVertices - 1; i++)
{
processLine(i, i + 1);
}
break;
case PrimitiveTopology.TriangleList:
for (var i = 0u; i < countVertices; i += 3)
{
processTriangle(i, i + 1, i + 2);
}
break;
case PrimitiveTopology.TriangleStrip:
var flip = false;
for (var i = 0u; i < countVertices - 2; i++)
{
if (flip)
{
processTriangle(i, i + 2, i + 1);
}
else
{
processTriangle(i, i + 1, i + 2);
}
flip = !flip;
}
break;
default:
throw new ArgumentOutOfRangeException(nameof(primitiveTopology), primitiveTopology, default);
}
}
