void StructureSphere(SphereStructureMode mode, Matrix4x4 local2world)
{
Mesh mesh = transform.GetComponent <MeshFilter>().sharedMesh;
List <Vector3> vertices = Util.GetNoRepeatVertices(mesh);
for (int i = 0; i < vertices.Count; i++)
{
vertices[i] = local2world * MathUtil.Vector4(vertices[i], 1);
}
switch (mode)
{
case SphereStructureMode.Ritter:
RitterSphere(vertices);
break;
case SphereStructureMode.RitterIter:
RitterIterSphere(vertices);
break;
case SphereStructureMode.RitterEigen:
RitterEigenSphere(vertices);
break;
}
}
public Sphere(Transform transform, SphereStructureMode mode)
{
this.transform = transform;
this.mode = mode;
matrix = transform.localToWorldMatrix;
StructureSphere(mode, matrix);
}
public void UpdateSphere(SphereStructureMode mode)
{
Matrix4x4 m = transform.localToWorldMatrix;
//发生缩放需要重构包围球
if (MathUtil.IsContainScale(matrix, m) || this.mode != mode)
{
StructureSphere(mode, m);
this.mode = mode;
}
else
{
//旋转不需要改变包围球
//平移只需把球心偏移即可
Vector3 translation = MathUtil.GetTranslation(matrix, m);
center += translation;
}
matrix = m;
}
