public VertexArray getSkinWeights()
{
this.requireVertexBufferNotNull();
VertexBuffer vertexBuffer = this.getVertexBuffer();
VertexArray skinWeights = vertexBuffer.getSkinWeights();
if (skinWeights == null)
{
if (this.m_skinWeights == null)
{
VertexArray skinIndices = this.getSkinIndices();
int componentCount = skinIndices.getComponentCount();
int vertexCount = vertexBuffer.getVertexCount();
this.m_skinWeights = new VertexArray(vertexCount, componentCount, 4);
Node[] boneArray = this.getBoneArray();
float[] values = new float[4];
int[] numArray = new int[4];
float[] src = new float[4];
for (int firstVertex = 0; firstVertex < vertexCount; ++firstVertex)
{
for (int index = 0; index < componentCount; ++index)
{
numArray[index] = 0;
}
skinIndices.get(firstVertex, 1, ref values);
int val1 = 0;
int num1 = 0;
for (int index1 = 0; index1 < 4; ++index1)
{
int index2 = (int)(sbyte)values[index1] & (int)byte.MaxValue;
int weight = this.getWeights(boneArray[index2])[firstVertex];
val1 = Math.Min(val1, weight);
num1 += Math.Abs(weight);
numArray[index1] = weight;
}
float num2 = 1f;
if (num1 > 0)
{
num2 /= (float)num1;
}
for (int index = 0; index < componentCount; ++index)
{
src[index] = num1 <= 0 ? (index != 0 ? 0.0f : 1f) : (float)(numArray[index] - val1) * num2;
}
this.m_skinWeights.set(firstVertex, 1, src);
this.m_vertexBuffer.finalVertexData[firstVertex].skinWeight.X = src[0];
this.m_vertexBuffer.finalVertexData[firstVertex].skinWeight.Y = src[1];
this.m_vertexBuffer.finalVertexData[firstVertex].skinWeight.Z = src[2];
this.m_vertexBuffer.finalVertexData[firstVertex].skinWeight.W = src[3];
}
}
skinWeights = this.m_skinWeights;
}
return(skinWeights);
}
public void preparePositionsForSkinning()
{
float[] scaleBias = new float[4];
VertexArray positions = this.getVertexBuffer().getPositions(ref scaleBias);
if (positions.getComponentCount() != 3 || positions.getComponentType() == 4 && (double)scaleBias[0] == 1.0 && ((double)scaleBias[1] == 0.0 && (double)scaleBias[2] == 0.0) && (double)scaleBias[3] == 0.0)
{
return;
}
float[] values = new float[positions.getVertexCount() * positions.getComponentCount()];
VertexArray arr = new VertexArray(positions.getVertexCount(), positions.getComponentCount(), 4);
positions.get(0, positions.getVertexCount(), ref values);
float[] bias = new float[scaleBias.Length - 1];
Array.Copy((Array)scaleBias, 1, (Array)bias, 0, scaleBias.Length - 1);
this.getVertexBuffer().setPositions(arr, scaleBias[0], bias);
}