/// <summary>
/// Generates Tangents and Bitangents for the vertices
/// </summary>
public void GenerateTangentsAndBitangents()
{
var positions = GetPositions();
var normals = GetNormals();
var uvs = GetUvs();
var signedIndices = GetSignedIndices();
TriangleListUtils.CalculateTangentsBitangents(positions, normals, uvs, signedIndices,
out Vector3[] tangents, out Vector3[] bitangents);
public void ThreeVerticesNormalized()
{
var values3d = new List <Vector3> {
new Vector3(1, 0, 0), new Vector3(0, 1, 0), new Vector3(0, 0, 1)
};
var values2d = new List <Vector2> {
new Vector2(1, 0), new Vector2(0, 0), new Vector2(0, 1)
};
TriangleListUtils.CalculateTangentsBitangents(values3d, values3d, values2d,
new List <int> {
0, 1, 2
}, out Vector3[] tangents, out Vector3[] bitangents);
public void ThreeVertices()
{
var values3d = new List <Vector3> {
new Vector3(1, 0, 0), new Vector3(0, 1, 0), new Vector3(0, 0, 1)
};
TriangleListUtils.CalculateSmoothNormals(values3d, new List <int> {
0, 1, 2
}, out Vector3[] normals);
// Ensure vectors are normalized.
Assert.AreEqual(1.0f, normals[0].Length, delta);
Assert.AreEqual(1.0f, normals[1].Length, delta);
Assert.AreEqual(1.0f, normals[2].Length, delta);
}
public void CalculateTangentBitangent()
{
// Don't generate tangents and bitangents if the vertex format doesn't support them.
int vertType = vertSize & 0xF;
if (!(vertType == 3 || vertType == 7))
{
return;
}
List <int> vertexIndices = GetRenderingVertexIndices();
Vector3[] tangents;
Vector3[] bitangents;
TriangleListUtils.CalculateTangentsBitangents(GetPositions(), GetNormals(), GetUv0(), vertexIndices, out tangents, out bitangents);
ApplyTanBitanArray(tangents, bitangents);
}
/// <summary>
/// Generates Tangents and Bitangents for the vertices
/// </summary>
public void GenerateTangentsAndBitangents()
{
List <int> indices = new List <int>();
foreach (var v in Polygons)
{
v.ToTriangles(this);
if (v.PrimitiveType != IOPrimitive.TRIANGLE)
{
continue;
}
indices.AddRange(v.Indicies);
}
var positions = Vertices.Select(e => e.Position).ToList();
var normals = Vertices.Select(e => e.Normal).ToList();
var uvs = HasUVSet(0) ? Vertices.Select(e => e.UVs[0]).ToList(): Vertices.Select(e => Vector2.Zero).ToList();
TriangleListUtils.CalculateTangentsBitangents(positions, normals, uvs, indices, out Vector3[] tangents, out Vector3[] bitangents);
public void NoVertices()
{
TriangleListUtils.CalculateSmoothNormals(new List <Vector3>(), new List <int>(), out Vector3[] normals);
Assert.AreEqual(0, normals.Length);
}