public void AddTriangle2 <AltVertex>(ref List <AltVertex> newVerts, ref List <uint> newIndices, int v1index, ref Vector3 v2, ref Vector3 v3)
where AltVertex : struct, IVertex
{
AltVertex[] triVerts = new AltVertex[3];
triVerts.Initialize();
Vector3 v1Pos = MeshAttr.GetPosition(ref mesh.vertices[v1index]);
MeshAttr.SetPosition(ref triVerts[0], ref v1Pos);
MeshAttr.SetPosition(ref triVerts[1], ref v2);
MeshAttr.SetPosition(ref triVerts[2], ref v3);
v1Pos.Normalize();
for (int i = 0; i < 3; i++)
{
MeshAttr.SetNormal(ref triVerts[i], ref v1Pos);
}
Vector2 uv0 = new Vector2(0.5f, 1);
Vector2 uv1 = new Vector2(0, 0);
Vector2 uv2 = new Vector2(1, 0);
MeshAttr.SetUV(ref triVerts[0], ref uv0);
MeshAttr.SetUV(ref triVerts[1], ref uv1);
MeshAttr.SetUV(ref triVerts[2], ref uv2);
Vector4 c0 = MeshAttr.GetColor(ref mesh.vertices[v1index]);
Vector4 c1 = MeshAttr.GetColor(ref mesh.vertices[v1index]);
Vector4 c2 = MeshAttr.GetColor(ref mesh.vertices[v1index]);
MeshAttr.SetColor(ref triVerts[0], ref c0);
MeshAttr.SetColor(ref triVerts[1], ref c1);
MeshAttr.SetColor(ref triVerts[2], ref c2);
newVerts[v1index] = triVerts[0];
int index = newVerts.Count;
newVerts.Add(triVerts[1]);
newVerts.Add(triVerts[2]);
newIndices.Add((uint)v1index);
newIndices.Add((uint)index++);
newIndices.Add((uint)index++);
}
public void AddTriangle <AltVertex>(ref List <AltVertex> newVerts, ref List <uint> newIndices, ref Vector3 v1, ref Vector3 v2, ref Vector3 v3, bool isAnticlockwise)
where AltVertex : struct, IVertex
{
AltVertex[] triVerts = new AltVertex[3];
triVerts.Initialize();
MeshAttr.SetPosition(ref triVerts[0], ref v1);
MeshAttr.SetPosition(ref triVerts[1], ref v2);
MeshAttr.SetPosition(ref triVerts[2], ref v3);
Vector3 v1N = v1;
v1N.Normalize();
for (int i = 0; i < 3; i++)
{
MeshAttr.SetNormal(ref triVerts[i], ref v1N);
}
Vector2 uv0 = new Vector2(0.5f, 1);
Vector2 uv1 = new Vector2(0, 0);
Vector2 uv2 = new Vector2(1, 0);
MeshAttr.SetUV(ref triVerts[0], ref uv0);
MeshAttr.SetUV(ref triVerts[1], ref uv1);
MeshAttr.SetUV(ref triVerts[2], ref uv2);
int index = newVerts.Count;
for (int i = 0; i < 3; i++)
{
newVerts.Add(triVerts[i]);
}
if (isAnticlockwise)
{
newIndices.Add((uint)index);
newIndices.Add((uint)index + 1);
newIndices.Add((uint)index + 2);
}
else
{
newIndices.Add((uint)index);
newIndices.Add((uint)index + 2);
newIndices.Add((uint)index + 1);
}
}
public void AddNormals()
{
// TODO Currently assuming that we are using triangles, and have
// maximised the vertices.
if (mesh.vertices[0].GetType().GetInterface("INormalVertex") != null)
{
for (int i = 0; i < indices.Length; i += 3)
{
Vector3 pos1 = MeshAttr.GetPosition(ref mesh.vertices[i]);
Vector3 pos2 = MeshAttr.GetPosition(ref mesh.vertices[i + 1]);
Vector3 pos3 = MeshAttr.GetPosition(ref mesh.vertices[i + 2]);
Vector3 a = pos2 - pos1;
Vector3 b = pos3 - pos1;
Vector3 normal = Vector3.Cross(a, b);
normal.Normalize();
MeshAttr.SetNormal(ref mesh.vertices[i], ref normal);
MeshAttr.SetNormal(ref mesh.vertices[i + 1], ref normal);
MeshAttr.SetNormal(ref mesh.vertices[i + 2], ref normal);
}
}
}
public void SetNormal(int index, ref Vector3 normal)
{
MeshAttr.SetNormal(ref vertices[index], ref normal);
}
