/**
* Remove @triangles from this mesh.
*/
public static bool DeleteTriangles(qe_Mesh mesh, List <qe_Triangle> triangles)
{
List <qe_Triangle> trianglesToRemove = new List <qe_Triangle>(triangles);
trianglesToRemove.Distinct();
if (trianglesToRemove.Count == mesh.faces.Length)
{
Debug.LogWarning("Cannot delete every triangle on a mesh!");
return(false);
}
int subMeshCount = mesh.cloneMesh.subMeshCount;
for (int i = 0; i < subMeshCount; i++)
{
List <int> remove = new List <int>();
List <int> tris = mesh.GetIndices(i).ToList();
for (int n = 0; n < tris.Count; n += 3)
{
int index = trianglesToRemove.IndexOf(tris[n], tris[n + 1], tris[n + 2]);
if (index > -1)
{
remove.Add(n + 0);
remove.Add(n + 1);
remove.Add(n + 2);
trianglesToRemove.RemoveAt(index);
}
}
remove.Sort();
List <int> rebuilt = new List <int>();
int removeIndex = 0;
for (int n = 0; n < tris.Count; n++)
{
if (removeIndex < remove.Count && n == remove[removeIndex])
{
removeIndex++;
continue;
}
rebuilt.Add(tris[n]);
}
mesh.SetIndices(i, rebuilt.ToArray());
}
RemoveUnusedVertices(ref mesh.cloneMesh);
mesh.CacheElements();
return(true);
}
public static void Facetize(qe_Mesh qmesh)
{
Mesh mesh = qmesh.cloneMesh;
int triangleCount = mesh.triangles.Length;
bool boneWeights_isNull = mesh.boneWeights.NullOrEmpty();
bool colors_isNull = mesh.colors.NullOrEmpty();
bool colors32_isNull = mesh.colors32.NullOrEmpty();
bool normals_isNull = mesh.normals.NullOrEmpty();
bool tangents_isNull = mesh.tangents.NullOrEmpty();
bool uv_isNull = mesh.uv.NullOrEmpty();
bool uv2_isNull = mesh.uv2.NullOrEmpty();
#if UNITY_5
bool uv3_isNull = mesh.uv3.NullOrEmpty();
bool uv4_isNull = mesh.uv4.NullOrEmpty();
#endif
bool vertices_isNull = mesh.vertices.NullOrEmpty();
BoneWeight[] boneWeights = boneWeights_isNull ? null : new BoneWeight[triangleCount];
Color[] colors = colors_isNull ? null : new Color[triangleCount];
Color32[] colors32 = colors32_isNull ? null : new Color32[triangleCount];
Vector3[] normals = normals_isNull ? null : new Vector3[triangleCount];
Vector4[] tangents = tangents_isNull ? null : new Vector4[triangleCount];
Vector2[] uv = uv_isNull ? null : new Vector2[triangleCount];
Vector2[] uv2 = uv2_isNull ? null : new Vector2[triangleCount];
#if UNITY_5
Vector2[] uv3 = uv3_isNull ? null : new Vector2[triangleCount];
Vector2[] uv4 = uv4_isNull ? null : new Vector2[triangleCount];
#endif
Vector3[] vertices = new Vector3[triangleCount];
// cache mesh arrays because accessing them through the reference is slooooow
Vector3[] mVertices = mesh.vertices;
BoneWeight[] mBoneWeights = mesh.boneWeights;
Color[] mColors = mesh.colors;
Color32[] mColors32 = mesh.colors32;
Vector3[] mNormals = mesh.normals;
Vector4[] mTangents = mesh.tangents;
Vector2[] mUv = mesh.uv;
Vector2[] mUv2 = mesh.uv2;
#if UNITY_5
Vector2[] mUv3 = mesh.uv3;
Vector2[] mUv4 = mesh.uv4;
#endif
int index = 0;
int[][] triangles = new int[mesh.subMeshCount][];
for (int i = 0; i < mesh.subMeshCount; i++)
{
triangles[i] = qmesh.GetIndices(i);
for (int t = 0; t < triangles[i].Length; t++)
{
int n = triangles[i][t];
if (!boneWeights_isNull)
{
boneWeights[index] = mBoneWeights[n];
}
if (!colors_isNull)
{
colors[index] = mColors[n];
}
if (!colors32_isNull)
{
colors32[index] = mColors32[n];
}
if (!normals_isNull)
{
normals[index] = mNormals[n];
}
if (!tangents_isNull)
{
tangents[index] = mTangents[n];
}
if (!uv_isNull)
{
uv[index] = mUv[n];
}
if (!uv2_isNull)
{
uv2[index] = mUv2[n];
}
#if UNITY_5
if (!uv3_isNull)
{
uv3[index] = mUv3[n];
}
if (!uv4_isNull)
{
uv4[index] = mUv4[n];
}
#endif
if (!vertices_isNull)
{
vertices[index] = mVertices[n];
}
triangles[i][t] = index;
index++;
}
}
mesh.vertices = vertices;
mesh.boneWeights = boneWeights;
mesh.colors = colors;
mesh.colors32 = colors32;
mesh.normals = normals;
mesh.tangents = tangents;
mesh.uv = uv;
mesh.uv2 = uv2;
#if UNITY_5
mesh.uv3 = uv3;
mesh.uv4 = uv4;
#endif
for (int i = 0; i < mesh.subMeshCount; i++)
{
qmesh.SetIndices(i, triangles[i]);
}
mesh.RecalculateNormals();
qmesh.CacheElements();
}