public void AddUVs()
{
Vector2 uv1 = new Vector2(0, 1);
Vector2 uv2 = new Vector2(0.5f, 0.1328f);
Vector2 uv3 = new Vector2(1, 1);
for (int i = 0; i < indices.Length; i += 3)
{
MeshAttr.SetUV(ref mesh.vertices[i], ref uv1);
MeshAttr.SetUV(ref mesh.vertices[i + 1], ref uv2);
MeshAttr.SetUV(ref mesh.vertices[i + 2], ref uv3);
}
}
/// <summary>
/// Adds a triangle with vertex format Position, Normal and UV, calculating the normal from the origin, and
/// using a defined UV of top center, bottom left, bottom right.
/// </summary>
/// <typeparam name="AltVertex"></typeparam>
/// <param name="newVerts"></param>
/// <param name="newIndices"></param>
/// <param name="v1"></param>
/// <param name="v2"></param>
/// <param name="v3"></param>
/// <param name="isAnticlockwise"></param>
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);
}
}
/// <summary>
/// Adds a triangle based on the current mesh with the vertex format Position, Normal, UV and Color.
/// It sets the normal for each vertex to the original position vector,
/// UV is set to top center, bottom left, bottom right, with original vert being top center
/// It sets color of all verts to the color of the original vertex.
/// </summary>
/// <typeparam name="AltVertex"></typeparam>
/// <param name="newVerts">The new set of vertices</param>
/// <param name="newIndices">The new set of indices</param>
/// <param name="v1index">The index of the vertex in the original mesh</param>
/// <param name="v2">the position of the first new vertex</param>
/// <param name="v3">the position of the second new vertex</param>
/// <param name="color">The new vertex color</param>"
public void AddTriangle2 <AltVertex>(ref List <AltVertex> newVerts, ref List <uint> newIndices, int v1index, ref Vector3 v2, ref Vector3 v3, Vector4 color)
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);
MeshAttr.SetColor(ref triVerts[0], ref color);
MeshAttr.SetColor(ref triVerts[1], ref color);
MeshAttr.SetColor(ref triVerts[2], ref color);
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++);
}