private void PrecomputeImprovedDrag()
{
MeshCollider meshCollider = (MeshCollider)this._LocalCollider;
Mesh sharedMesh = meshCollider.sharedMesh;
Vector3[] vertices = sharedMesh.vertices;
Vector3[] normals = sharedMesh.normals;
int[] indices = sharedMesh.GetIndices(0);
int num = indices.Length / 3;
this._DragNormals = new Vector3[num];
this._DragVertices = new Vector3[num * 3];
this._DragCenters = new Vector3[num];
this._DragAreas = new float[num];
this._PolygonVolumes = new float[num];
Vector3 b = this._LocalCollider.transform.InverseTransformPoint(this._LocalCollider.bounds.center);
int num2 = 0;
int i = 0;
while (i < indices.Length)
{
Vector3 vector = vertices[indices[i]];
Vector3 vector2 = vertices[indices[i + 1]];
Vector3 vector3 = vertices[indices[i + 2]];
this._DragVertices[i] = vector;
this._DragVertices[i + 1] = vector2;
this._DragVertices[i + 2] = vector3;
this._DragAreas[num2] = Vector3.Cross(vector2 - vector, vector3 - vector).magnitude * 0.5f;
this._DragCenters[num2] = (vector + vector2 + vector3) * 0.333333343f;
Vector3 a = normals[indices[i++]];
Vector3 b2 = normals[indices[i++]];
Vector3 b3 = normals[indices[i++]];
this._DragNormals[num2] = (a + b2 + b3) * 0.333333343f;
Vector3 p = vector - b;
Vector3 p2 = vector2 - b;
Vector3 p3 = vector3 - b;
this._PolygonVolumes[num2++] = Mathf.Abs(ColliderExtensions.SignedVolumeOfTriangle(p, p2, p3));
}
this._ImprovedDragSamples = new WaterSample[num];
}
public static float ComputeVolume(this MeshCollider that)
{
float num = 0f;
Mesh sharedMesh = that.sharedMesh;
Vector3[] vertices = sharedMesh.vertices;
int[] triangles = sharedMesh.triangles;
int num2 = triangles.Length;
Vector3 b = that.transform.InverseTransformPoint(that.bounds.center);
int i = 0;
while (i < num2)
{
Vector3 p = vertices[triangles[i++]] - b;
Vector3 p2 = vertices[triangles[i++]] - b;
Vector3 p3 = vertices[triangles[i++]] - b;
num += ColliderExtensions.SignedVolumeOfTriangle(p, p2, p3);
}
Vector3 lossyScale = that.transform.lossyScale;
return(Mathf.Abs(num) * lossyScale.x * lossyScale.y * lossyScale.z);
}