public RawVertex Clone()
{
RawVertex ret = new RawVertex(position, texCoord, normal, tangent);
ret.blendIndex1 = blendIndex1;
ret.blendIndex2 = blendIndex2;
ret.blendIndex3 = blendIndex3;
ret.blendIndex4 = blendIndex4;
ret.blendWeight1 = blendWeight1;
ret.blendWeight2 = blendWeight2;
ret.blendWeight3 = blendWeight3;
ret.blendWeight4 = blendWeight4;
return(ret);
}
/// <summary>
/// Returns true if two vertices are nearly equal. For example the
/// tangent or normal data does not have to match 100%.
/// Used to optimize vertex buffers and to generate indices.
/// </summary>
/// <param name="a">A</param>
/// <param name="b">B</param>
/// <returns>Bool</returns>
public static bool NearlyEquals(RawVertex a, RawVertex b)
{
//SkinningWithColladaModelsInXna.Helpers.Log.Write("Compare a=" + a.pos + ", " + a.uv + ", "+a.normal+
// " with b=" + b.pos + ", " + b.uv+ ", "+b.normal);
//return false;
// Position has to match, else it is just different vertex
return(a.position == b.position &&
// Ignore blend indices and blend weights, they are the same
// anyway, because they are calculated from the bone distances.
Math.Abs(a.texCoord.X - b.texCoord.X) < 0.001f &&
Math.Abs(a.texCoord.Y - b.texCoord.Y) < 0.001f &&
// Normals and tangents do not have to be very close, we can't see
// any difference between small variations here, but by optimizing
// similar vertices we can improve the overall rendering performance.
(a.normal - b.normal).Length() < 0.1f &&
(a.tangent - b.tangent).Length() < 0.1f);
}
