public void Generate()
{
MeshFilter filter = gameObject.GetComponent <MeshFilter>();
MeshBuilder meshBuilder = new MeshBuilder();
// Face 0 - Front
meshBuilder.Vertices.Add(new Vector3(0, 0, 0f));
meshBuilder.Vertices.Add(new Vector3(1f, 0f, 0f));
meshBuilder.Vertices.Add(new Vector3(0f, 1f, 0f));
meshBuilder.Vertices.Add(new Vector3(1f, 1f, 0f));
meshBuilder.AddTriangle(0, 1, 2);
meshBuilder.AddTriangle(1, 3, 2);
// Face 1 - Up
meshBuilder.Vertices.Add(new Vector3(0.5f, 1f, 0.5f));
meshBuilder.Vertices.Add(new Vector3(0f, 1f, 1f));
meshBuilder.Vertices.Add(new Vector3(1f, 1f, 1f));
meshBuilder.AddTriangle(2, 3, 4);
meshBuilder.AddTriangle(5, 2, 4);
meshBuilder.AddTriangle(4, 3, 6);
meshBuilder.AddTriangle(4, 6, 5);
// Face 2 - Left
meshBuilder.Vertices.Add(new Vector3(0f, 0f, 1f));
meshBuilder.AddTriangle(0, 2, 5);
meshBuilder.AddTriangle(7, 0, 5);
// Face 3 - Back
meshBuilder.Vertices.Add(new Vector3(1f, 0f, 1f));
meshBuilder.AddTriangle(5, 8, 7);
meshBuilder.AddTriangle(6, 8, 5);
// Face 4 - Right
meshBuilder.AddTriangle(3, 1, 6);
meshBuilder.AddTriangle(6, 1, 8);
// Face 5 - Down
meshBuilder.Vertices.Add(new Vector3(0.5f, 0f, 0.5f));
meshBuilder.AddTriangle(9, 1, 0);
meshBuilder.AddTriangle(9, 8, 1);
meshBuilder.AddTriangle(9, 7, 8);
meshBuilder.AddTriangle(9, 0, 7);
MeshProcessing.SubdivideTrianglesIn4(meshBuilder);
MeshProcessing.SubdivideTrianglesIn4(meshBuilder);
MeshProcessing.SubdivideTrianglesIn4(meshBuilder);
MeshProcessing.SubdivideTrianglesIn4(meshBuilder);
// MeshProcessing.SubdivideTriangles(meshBuilder);
// MeshProcessing.SubdivideTriangles(meshBuilder);
// MeshProcessing.SubdivideTriangles(meshBuilder);
// MeshProcessing.SubdivideTriangles(meshBuilder);
for (int i = 0; i < meshBuilder.Vertices.Count; i++)
{
Vector3 v = (meshBuilder.Vertices[i] - 0.5f * Vector3.one).normalized;
Vector2 longlat = new Vector2(Mathf.Atan2(v.x, v.z) + Mathf.PI, Mathf.Acos(v.y));
Vector2 uv = new Vector2(longlat.x / (2f * Mathf.PI), longlat.y / Mathf.PI);
uv.y = 1f - uv.y;
uv.x = 1f - uv.x;
meshBuilder.UVs.Add(uv);
}
int[] triangles = meshBuilder.GetTriangles();
int v1, v2, v3, t1, t2, t3;
float uv1, uv2, uv3;
for (int i = 0; i < triangles.Length / 3; i++)
{
t1 = 3 * i;
t2 = 3 * i + 1;
t3 = 3 * i + 2;
v1 = triangles[t1];
v2 = triangles[t2];
v3 = triangles[t3];
uv1 = meshBuilder.UVs[v1].x;
uv2 = meshBuilder.UVs[v2].x;
uv3 = meshBuilder.UVs[v3].x;
if (!VerifyWrongTriangleUV(uv1, uv2, uv3, v2, v3, t2, t3, meshBuilder))
{
if (!VerifyWrongTriangleUV(uv2, uv1, uv3, v1, v3, t1, t3, meshBuilder))
{
VerifyWrongTriangleUV(uv3, uv2, uv1, v2, v1, t2, t1, meshBuilder);
}
}
}
Mesh mesh = meshBuilder.CreateMesh();
mesh.RecalculateBounds();
filter.mesh = mesh;
}
public void Generate()
{
MeshFilter filter = gameObject.GetComponent <MeshFilter>();
MeshBuilder meshBuilder = new MeshBuilder();
// Face 0 - Front
meshBuilder.Vertices.Add(new Vector3(0, 0, 0f));
meshBuilder.Vertices.Add(new Vector3(1f, 0f, 0f));
meshBuilder.Vertices.Add(new Vector3(0f, 1f, 0f));
meshBuilder.Vertices.Add(new Vector3(1f, 1f, 0f));
meshBuilder.AddTriangle(0, 1, 2);
meshBuilder.AddTriangle(1, 3, 2);
// Face 1 - Up
meshBuilder.Vertices.Add(new Vector3(0.5f, 1f, 0.5f));
meshBuilder.Vertices.Add(new Vector3(0f, 1f, 1f));
meshBuilder.Vertices.Add(new Vector3(1f, 1f, 1f));
meshBuilder.AddTriangle(2, 3, 4);
meshBuilder.AddTriangle(5, 2, 4);
meshBuilder.AddTriangle(4, 3, 6);
meshBuilder.AddTriangle(4, 6, 5);
// Face 2 - Left
meshBuilder.Vertices.Add(new Vector3(0f, 0f, 1f));
meshBuilder.AddTriangle(0, 2, 5);
meshBuilder.AddTriangle(7, 0, 5);
// Face 3 - Back
meshBuilder.Vertices.Add(new Vector3(1f, 0f, 1f));
meshBuilder.AddTriangle(5, 8, 7);
meshBuilder.AddTriangle(6, 8, 5);
// Face 4 - Right
meshBuilder.AddTriangle(3, 1, 6);
meshBuilder.AddTriangle(6, 1, 8);
// Face 5 - Down
meshBuilder.Vertices.Add(new Vector3(0.5f, 0f, 0.5f));
meshBuilder.AddTriangle(9, 1, 0);
meshBuilder.AddTriangle(9, 8, 1);
meshBuilder.AddTriangle(9, 7, 8);
meshBuilder.AddTriangle(9, 0, 7);
MeshProcessing.SubdivideTrianglesIn4(meshBuilder);
MeshProcessing.SubdivideTrianglesIn4(meshBuilder);
MeshProcessing.SubdivideTrianglesIn4(meshBuilder);
MeshProcessing.SubdivideTrianglesIn4(meshBuilder);
// MeshProcessing.SubdivideTriangles(meshBuilder);
// MeshProcessing.SubdivideTriangles(meshBuilder);
// MeshProcessing.SubdivideTriangles(meshBuilder);
// MeshProcessing.SubdivideTriangles(meshBuilder);
for (int i = 0; i < meshBuilder.Vertices.Count; i++)
{
Vector3 v = (meshBuilder.Vertices[i] - 0.5f * Vector3.one).normalized;
Vector2 longlat = new Vector2(Mathf.Atan2(v.x, v.z) + Mathf.PI, Mathf.Acos(v.y));
Vector2 uv = new Vector2(longlat.x / (2f * Mathf.PI), longlat.y / Mathf.PI);
uv.y = 1f - uv.y;
meshBuilder.UVs.Add(uv);
}
Mesh mesh = meshBuilder.CreateMesh();
filter.mesh = mesh;
}