public void Awake()
{
Stopwatch sw = Stopwatch.StartNew();
Vector3[] points = ori.mesh.vertices;
if (useEight)
{
EightBlockTree eightTree = new EightBlockTree();
points = eightTree.Build(points, 5);
}
QuickHull3D hull = new QuickHull3D();
hull.Build(points);
Vector3[] vertices = hull.GetVertices();
int[] faceIndices = hull.GetFaces();
Mesh mesh = new Mesh {
vertices = vertices, triangles = faceIndices
};
col.mesh = mesh;
sw.Stop();
Debug.Log(sw.Elapsed);
}
private Mesh CalcMesh(string _path, bool _useEightBlocks, int _blockLv)
{
var oriMesh = AssetDatabase.LoadAssetAtPath <GameObject>(_path);
List <Vector3> allPoints = new List <Vector3>(1024);
foreach (var mesh in oriMesh.GetComponentsInChildren <SkinnedMeshRenderer>())
{
allPoints.AddRange(mesh.sharedMesh.vertices);
}
foreach (var mesh in oriMesh.GetComponentsInChildren <MeshFilter>())
{
allPoints.AddRange(mesh.sharedMesh.vertices);
}
Vector3[] points = allPoints.ToArray();
AppendLogLine(_path);
AppendLogLine(" Ori Vertexs:", points.Length.ToString());
if (_useEightBlocks)
{
EightBlockTree eightTree = new EightBlockTree();
points = eightTree.Build(points, _blockLv);
AppendLogLine(" EightBlockTree Vertexs:", points.Length.ToString());
}
QuickHull3D hull = new QuickHull3D();
hull.Build(points);
Vector3[] vertices = hull.GetVertices();
int[] faceIndices = hull.GetFaces();
Mesh newMesh = new Mesh {
vertices = vertices, triangles = faceIndices
};
AppendLogLine(" End vertices:", vertices.Length.ToString());
AppendLogLine(" End faceIndices:", faceIndices.Length.ToString());
return(newMesh);
}
public void Evaluate(int SpreadMax)
{
if (this.FPinInVector.PinIsChanged)
{
List <Point3d> points = new List <Point3d>();
#region Initialize List
for (int i = 0; i < this.FPinInVector.SliceCount; i++)
{
double x, y, z;
this.FPinInVector.GetValue3D(i, out x, out y, out z);
points.Add(new Point3d(x, y, z));
}
#endregion
#region Compute Hull
QuickHull3D q = new QuickHull3D();
q.build(points.ToArray());
Point3d[] vertices = q.getVertices();
int[][] faces = q.getFaces();
#endregion
#region Output
this.FPinOutVertices.SliceCount = vertices.Length;
for (int i = 0; i < vertices.Length; i++)
{
this.FPinOutVertices.SetValue3D(i, vertices[i].x, vertices[i].y, vertices[i].z);
}
this.FPinOutIndices.SliceCount = faces.Length * 3;
int idx = 0;
for (int i = 0; i < faces.Length; i++)
{
this.FPinOutIndices.SetValue(idx, faces[i][0]);
this.FPinOutIndices.SetValue(idx + 1, faces[i][1]);
this.FPinOutIndices.SetValue(idx + 2, faces[i][2]);
idx += 3;
}
#endregion
}
}
/**
* Run for a simple demonstration of QuickHull3D.
*/
public static void main(string[] args)
{
// x y z coordinates of 6 points
Point3d[] points = new Point3d[]
{
new Point3d(0.0, 0.0, 0.0),
new Point3d(1.0, 0.5, 0.0),
new Point3d(2.0, 0.0, 0.0),
new Point3d(0.5, 0.5, 0.5),
new Point3d(0.0, 0.0, 2.0),
new Point3d(0.1, 0.2, 0.3),
new Point3d(0.0, 2.0, 0.0),
};
QuickHull3D hull = new QuickHull3D();
hull.build(points);
// System.out.println ("Vertices:");
// Point3d[] vertices = hull.getVertices();
// for (int i=0; i<vertices.Length; i++)
// {
// Point3d pnt = vertices[i];
// System.out.println (pnt.x + " " + pnt.y + " " + pnt.z);
// }
// System.out.println ("Faces:");
// int[][] faceIndices = hull.getFaces();
//
// for (int i=0; i<vertices.Length; i++)
// {
// for (int k=0; k<faceIndices[i].Length; k++)
// {
// System.out.print (faceIndices[i][k] + " ");
// }
// System.out.println ("");
// }
}
void Start()
{
MeshFilter[] meshFilters = GetComponentsInChildren <MeshFilter>(); //包括了自己所以要跳过
CombineInstance[] combine = new CombineInstance[meshFilters.Length - 1];
Material[] mats = new Material[meshFilters.Length - 1];
Matrix4x4 matrix = transform.worldToLocalMatrix;
int index = 0;
for (int i = 1; i < meshFilters.Length; i++)
{
MeshFilter mf = meshFilters[i];
MeshRenderer mr = meshFilters[i].GetComponent <MeshRenderer>();
if (mr == null)
{
continue;
}
combine[index].mesh = mf.sharedMesh;
combine[index].transform = matrix * mf.transform.localToWorldMatrix;
mr.enabled = false;
mats[index] = mr.sharedMaterial;
index++;
}
MeshFilter thisMeshFilter = GetComponent <MeshFilter>();
Mesh mesh = new Mesh {
name = "Combined"
};
thisMeshFilter.mesh = mesh;
mesh.CombineMeshes(combine, false);
MeshRenderer thisMeshRenderer = GetComponent <MeshRenderer>();
thisMeshRenderer.sharedMaterials = mats;
thisMeshRenderer.enabled = true;
MeshCollider thisMeshCollider = GetComponent <MeshCollider>();
if (thisMeshCollider != null)
{
Stopwatch sw = Stopwatch.StartNew();
Vector3[] points = mesh.vertices;
EightBlockTree eightTree = new EightBlockTree();
points = eightTree.Build(points, 8);
QuickHull3D hull = new QuickHull3D();
hull.Build(points);
Vector3[] vertices = hull.GetVertices();
int[] faceIndices = hull.GetFaces();
Mesh colMesh = new Mesh {
vertices = vertices, triangles = faceIndices
};
sw.Stop();
Debug.Log(sw.Elapsed);
thisMeshCollider.sharedMesh = colMesh;
}
else
{
thisMeshCollider = gameObject.AddComponent <MeshCollider>();
thisMeshCollider.sharedMesh = mesh;
thisMeshCollider.convex = true;
}
}
private void GenerateConvexHull(Hull hull, Vector3[] meshVertices, int[] meshIndices, Mesh destMesh)
{
// Generate array of input points
int totalFaces = hull.selectedFaces.Count;
Point3d[] inputPoints = new Point3d[totalFaces * 3];
for (int i = 0; i < hull.selectedFaces.Count; i++)
{
int faceIndex = hull.selectedFaces[i];
Vector3 p0 = meshVertices[meshIndices[faceIndex * 3]];
Vector3 p1 = meshVertices[meshIndices[faceIndex * 3 + 1]];
Vector3 p2 = meshVertices[meshIndices[faceIndex * 3 + 2]];
inputPoints[i * 3] = new Point3d(p0.x, p0.y, p0.z);
inputPoints[i * 3 + 1] = new Point3d(p1.x, p1.y, p1.z);
inputPoints[i * 3 + 2] = new Point3d(p2.x, p2.y, p2.z);
}
// Calculate the convex hull
QuickHull3D qHull = new QuickHull3D();
try
{
qHull.build(inputPoints);
}
catch (System.Exception)
{
Debug.LogError("Could not generate hull for " + this.name + "'s '" + hull.name + "' (input " + inputPoints.Length + " points)");
}
// Get calculated hull vertices and indices
Point3d[] hullVertices = qHull.getVertices();
int[][] hullFaceIndices = qHull.getFaces();
hull.numColliderFaces = hullFaceIndices.Length;
Debug.Log("Calculated collider for '" + hull.name + "' has " + hullFaceIndices.Length + " faces");
if (hullFaceIndices.Length >= 256)
{
hull.hasColliderError = true;
return;
}
// Convert to dest vertices
Vector3[] destVertices = new Vector3[hullVertices.Length];
for (int i = 0; i < destVertices.Length; i++)
{
destVertices[i] = new Vector3((float)hullVertices[i].x, (float)hullVertices[i].y, (float)hullVertices[i].z);
}
// Convert to dest incices
List <int> destIndices = new List <int>();
for (int i = 0; i < hullFaceIndices.Length; i++)
{
int faceVerts = hullFaceIndices[i].Length;
for (int j = 1; j < faceVerts - 1; j++)
{
destIndices.Add(hullFaceIndices[i][0]);
destIndices.Add(hullFaceIndices[i][j]);
destIndices.Add(hullFaceIndices[i][j + 1]);
}
}
int[] destIndicesArray = new int[destIndices.Count];
for (int i = 0; i < destIndices.Count; i++)
{
destIndicesArray[i] = destIndices[i];
}
// Push to collision mesh
hull.collisionMesh.vertices = destVertices;
hull.collisionMesh.triangles = destIndicesArray;
hull.collisionMesh.RecalculateBounds();
}
