public static UMesh DecimateMeshBasic(Mesh sourceMesh, UMatrix transform, float quality, bool recalculateNormals, DecimationAlgorithm.StatusReportCallback statusCallback = null)
{
var algorithm = MeshDecimation.CreateAlgorithm(Algorithm.FastQuadraticMesh);
algorithm.MaxVertexCount = ushort.MaxValue;
if (statusCallback != null)
{
algorithm.StatusReport += statusCallback;
}
int totalTriangleCount = sourceMesh.Indices.Length / 3;
int targetTriangleCount = UMath.CeilToInt(totalTriangleCount * quality);
//var destMesh = MeshDecimation.DecimateMeshLossless( sourceMesh);
var destMesh = MeshDecimation.DecimateMesh(algorithm, sourceMesh, targetTriangleCount);
var newMeshVertices = FromSimplifyVertices(destMesh.Vertices);
if (statusCallback != null)
{
algorithm.StatusReport -= statusCallback;
}
return(CreateMesh(null, newMeshVertices, destMesh, recalculateNormals));
}
/// <summary>
/// Decimates an array of meshes, and combines them into one mesh.
/// </summary>
/// <param name="meshes">The meshes to decimate.</param>
/// <param name="transforms">The mesh transforms.</param>
/// <param name="materials">The mesh materials, with submesh materials.</param>
/// <param name="meshBones">The bones for each mesh.</param>
/// <param name="quality">The desired quality.</param>
/// <param name="recalculateNormals">If normals should be recalculated.</param>
/// <param name="resultMaterials">The resulting materials array.</param>
/// <param name="mergedBones">The output merged bones.</param>
/// <param name="statusCallback">The optional status report callback.</param>
/// <returns>The decimated mesh.</returns>
public static UMesh DecimateMeshes(UMesh[] meshes, UMatrix[] transforms, UMaterial[][] materials, UTransform[][] meshBones, float quality, bool recalculateNormals, out UMaterial[] resultMaterials, out UTransform[] mergedBones, DecimationAlgorithm.StatusReportCallback statusCallback = null)
{
if (meshes == null)
{
throw new ArgumentNullException("meshes");
}
else if (meshes.Length == 0)
{
throw new ArgumentException("You have to simplify at least one mesh.", "meshes");
}
else if (transforms == null)
{
throw new ArgumentNullException("transforms");
}
else if (transforms.Length != meshes.Length)
{
throw new ArgumentException("The array of transforms must match the length of the meshes array.", "transforms");
}
else if (materials == null)
{
throw new ArgumentNullException("materials");
}
else if (materials.Length != meshes.Length)
{
throw new ArgumentException("If materials are provided, the length of the array must match the length of the meshes array.", "materials");
}
else if (meshBones != null && meshBones.Length != meshes.Length)
{
throw new ArgumentException("If mesh bones are provided, the length of the array must match the length of the meshes array.", "meshBones");
}
int totalVertexCount = 0;
int totalSubMeshCount = 0;
for (int meshIndex = 0; meshIndex < meshes.Length; meshIndex++)
{
UMesh mesh = meshes[meshIndex];
totalVertexCount += mesh.vertexCount;
totalSubMeshCount += mesh.subMeshCount;
var meshMaterials = materials[meshIndex];
if (meshMaterials == null)
{
throw new ArgumentException(string.Format("The mesh materials for index {0} is null!", meshIndex), "materials");
}
else if (meshMaterials.Length != mesh.subMeshCount)
{
throw new ArgumentException(string.Format("The mesh materials at index {0} don't match the submesh count! ({1} != {2})", meshIndex, meshMaterials.Length, mesh.subMeshCount), "materials");
}
for (int i = 0; i < meshMaterials.Length; i++)
{
if (meshMaterials[i] == null)
{
throw new ArgumentException(string.Format("The mesh material index {0} at material array index {1} is null!", i, meshIndex), "materials");
}
}
}
int totalTriangleCount = 0;
var vertices = new List <Vector3d>(totalVertexCount);
var indices = new List <int[]>(totalSubMeshCount);
List <Vector3> normals = null;
List <Vector4> tangents = null;
List <Vector2> uv1 = null;
List <Vector2> uv2 = null;
List <Vector2> uv3 = null;
List <Vector2> uv4 = null;
List <Vector4> colors = null;
List <BoneWeight> boneWeights = null;
List <UMatrix> usedBindposes = null;
List <UTransform> usedBones = null;
List <UMaterial> usedMaterials = new List <UMaterial>(totalSubMeshCount);
Dictionary <UMaterial, int> materialMap = new Dictionary <UMaterial, int>();
int currentVertexCount = 0;
for (int meshIndex = 0; meshIndex < meshes.Length; meshIndex++)
{
var mesh = meshes[meshIndex];
var transform = transforms[meshIndex];
var meshMaterials = materials[meshIndex];
var bones = (meshBones != null ? meshBones[meshIndex] : null);
int meshVertexCount = mesh.vertexCount;
var meshVertices = mesh.vertices;
var meshNormals = mesh.normals;
var meshTangents = mesh.tangents;
var meshUV1 = mesh.uv;
var meshUV2 = mesh.uv2;
var meshUV3 = mesh.uv3;
var meshUV4 = mesh.uv4;
var meshColors = mesh.colors;
var meshBoneWeights = mesh.boneWeights;
var meshBindposes = mesh.bindposes;
if (bones != null && meshBoneWeights != null && meshBoneWeights.Length > 0 && meshBindposes != null && meshBindposes.Length > 0 && bones.Length == meshBindposes.Length)
{
if (usedBindposes == null)
{
usedBindposes = new List <UMatrix>(meshBindposes);
usedBones = new List <UTransform>(bones);
}
else
{
bool bindPoseMismatch = false;
int[] boneIndices = new int[bones.Length];
for (int i = 0; i < bones.Length; i++)
{
int usedBoneIndex = usedBones.IndexOf(bones[i]);
if (usedBoneIndex == -1)
{
usedBoneIndex = usedBones.Count;
usedBones.Add(bones[i]);
usedBindposes.Add(meshBindposes[i]);
}
else
{
if (meshBindposes[i] != usedBindposes[usedBoneIndex])
{
bindPoseMismatch = true;
}
}
boneIndices[i] = usedBoneIndex;
}
// If any bindpose is mismatching, we correct it first
if (bindPoseMismatch)
{
var correctedBindposes = new UMatrix[meshBindposes.Length];
for (int i = 0; i < meshBindposes.Length; i++)
{
int usedBoneIndex = boneIndices[i];
correctedBindposes[i] = usedBindposes[usedBoneIndex];
}
TransformVertices(meshVertices, meshBoneWeights, meshBindposes, correctedBindposes);
}
// Then we remap the bones
RemapBones(meshBoneWeights, boneIndices);
}
}
// Transforms the vertices
TransformVertices(meshVertices, ref transform);
AddToList(vertices, meshVertices, currentVertexCount, totalVertexCount);
AddToList(ref normals, meshNormals, currentVertexCount, meshVertexCount, totalVertexCount, new Vector3(1f, 0f, 0f));
AddToList(ref tangents, meshTangents, currentVertexCount, meshVertexCount, totalVertexCount, new Vector4(0f, 0f, 1f, 1f)); // Is the default value correct?
AddToList(ref uv1, meshUV1, currentVertexCount, meshVertexCount, totalVertexCount, new Vector2());
AddToList(ref uv2, meshUV2, currentVertexCount, meshVertexCount, totalVertexCount, new Vector2());
AddToList(ref uv3, meshUV3, currentVertexCount, meshVertexCount, totalVertexCount, new Vector2());
AddToList(ref uv4, meshUV4, currentVertexCount, meshVertexCount, totalVertexCount, new Vector2());
AddToList(ref colors, meshColors, currentVertexCount, meshVertexCount, totalVertexCount);
AddToList(ref boneWeights, meshBoneWeights, currentVertexCount, meshVertexCount, totalVertexCount);
int subMeshCount = mesh.subMeshCount;
for (int subMeshIndex = 0; subMeshIndex < subMeshCount; subMeshIndex++)
{
var subMeshMaterial = meshMaterials[subMeshIndex];
int[] subMeshIndices = mesh.GetTriangles(subMeshIndex);
if (currentVertexCount > 0)
{
for (int i = 0; i < subMeshIndices.Length; i++)
{
subMeshIndices[i] += currentVertexCount;
}
}
totalTriangleCount += subMeshIndices.Length / 3;
int mergeWithIndex;
if (materialMap.TryGetValue(subMeshMaterial, out mergeWithIndex))
{
int[] currentIndices = indices[mergeWithIndex];
indices[mergeWithIndex] = MergeArrays(currentIndices, subMeshIndices);
}
else
{
materialMap.Add(subMeshMaterial, indices.Count);
usedMaterials.Add(subMeshMaterial);
indices.Add(subMeshIndices);
}
}
currentVertexCount += meshVertices.Length;
}
quality = UMath.Clamp01(quality);
int targetTriangleCount = UMath.CeilToInt(totalTriangleCount * quality);
var sourceMesh = new Mesh(vertices.ToArray(), indices.ToArray());
if (normals != null)
{
sourceMesh.Normals = normals.ToArray();
}
if (tangents != null)
{
sourceMesh.Tangents = tangents.ToArray();
}
if (uv1 != null)
{
sourceMesh.UV1 = uv1.ToArray();
}
if (uv2 != null)
{
sourceMesh.UV2 = uv2.ToArray();
}
if (uv3 != null)
{
sourceMesh.UV3 = uv3.ToArray();
}
if (uv4 != null)
{
sourceMesh.UV4 = uv4.ToArray();
}
if (colors != null)
{
sourceMesh.Colors = colors.ToArray();
}
if (boneWeights != null)
{
sourceMesh.BoneWeights = boneWeights.ToArray();
}
var algorithm = MeshDecimation.CreateAlgorithm(Algorithm.Default);
algorithm.MaxVertexCount = ushort.MaxValue;
if (statusCallback != null)
{
algorithm.StatusReport += statusCallback;
}
var destMesh = MeshDecimation.DecimateMesh(algorithm, sourceMesh, targetTriangleCount);
var newMeshVertices = FromSimplifyVertices(destMesh.Vertices);
if (statusCallback != null)
{
algorithm.StatusReport -= statusCallback;
}
var bindposes = (usedBindposes != null ? usedBindposes.ToArray() : null);
resultMaterials = usedMaterials.ToArray();
mergedBones = (usedBones != null ? usedBones.ToArray() : null);
return(CreateMesh(bindposes, newMeshVertices, destMesh, recalculateNormals));
}
/// <summary>
/// Decimates a mesh.
/// </summary>
/// <param name="mesh">The mesh to decimate.</param>
/// <param name="transform">The mesh transform.</param>
/// <param name="quality">The desired quality.</param>
/// <param name="recalculateNormals">If normals should be recalculated.</param>
/// <param name="statusCallback">The optional status report callback.</param>
/// <returns>The decimated mesh.</returns>
public static UMesh DecimateMesh(UMesh mesh, UMatrix transform, float quality, bool recalculateNormals, DecimationAlgorithm.StatusReportCallback statusCallback = null)
{
if (mesh == null)
{
throw new ArgumentNullException("mesh");
}
int subMeshCount = mesh.subMeshCount;
var meshVertices = mesh.vertices;
var meshNormals = mesh.normals;
var meshTangents = mesh.tangents;
var meshUV1 = mesh.uv;
var meshUV2 = mesh.uv2;
var meshUV3 = mesh.uv3;
var meshUV4 = mesh.uv4;
var meshColors = mesh.colors;
var meshBoneWeights = mesh.boneWeights;
var meshBindposes = mesh.bindposes;
int totalTriangleCount = 0;
var meshIndices = new int[subMeshCount][];
for (int i = 0; i < subMeshCount; i++)
{
meshIndices[i] = mesh.GetTriangles(i);
totalTriangleCount += meshIndices[i].Length / 3;
}
// Transforms the vertices
TransformVertices(meshVertices, ref transform);
var vertices = ToSimplifyVertices(meshVertices);
quality = UMath.Clamp01(quality);
int targetTriangleCount = UMath.CeilToInt(totalTriangleCount * quality);
var sourceMesh = new Mesh(vertices, meshIndices);
if (meshNormals != null && meshNormals.Length > 0)
{
sourceMesh.Normals = ToSimplifyVec(meshNormals);
}
if (meshTangents != null && meshTangents.Length > 0)
{
sourceMesh.Tangents = ToSimplifyVec(meshTangents);
}
if (meshUV1 != null && meshUV1.Length > 0)
{
sourceMesh.UV1 = ToSimplifyVec(meshUV1);
}
if (meshUV2 != null && meshUV2.Length > 0)
{
sourceMesh.UV2 = ToSimplifyVec(meshUV2);
}
if (meshUV3 != null && meshUV3.Length > 0)
{
sourceMesh.UV3 = ToSimplifyVec(meshUV3);
}
if (meshUV4 != null && meshUV4.Length > 0)
{
sourceMesh.UV4 = ToSimplifyVec(meshUV4);
}
if (meshColors != null && meshColors.Length > 0)
{
sourceMesh.Colors = ToSimplifyVec(meshColors);
}
if (meshBoneWeights != null && meshBoneWeights.Length > 0)
{
sourceMesh.BoneWeights = ToSimplifyBoneWeights(meshBoneWeights);
}
var algorithm = MeshDecimation.CreateAlgorithm(Algorithm.Default);
algorithm.MaxVertexCount = ushort.MaxValue;
if (statusCallback != null)
{
algorithm.StatusReport += statusCallback;
}
//var destMesh = MeshDecimation.DecimateMeshLossless( sourceMesh);
var destMesh = MeshDecimation.DecimateMesh(algorithm, sourceMesh, targetTriangleCount);
var newMeshVertices = FromSimplifyVertices(destMesh.Vertices);
if (statusCallback != null)
{
algorithm.StatusReport -= statusCallback;
}
return(CreateMesh(meshBindposes, newMeshVertices, destMesh, recalculateNormals));
}