api.py 文件源码

def build_from_hull(self):
        """
        Test oriented bounding box algorithm using convex hull points.

        Raises:
            None

        Returns:
            EigenVectors(OpenMaya.MVector)
            CenterPoint(OpenMaya.MVector)
            BoundingExtents(OpenMaya.MVector)
        """
        npPointList = [[self.points[i].x, self.points[i].y, self.points[i].z]
                       for i in xrange(self.points.length())]

        try:
            hull = ConvexHull(npPointList)
        except NameError:
            raise RuntimeError(
                "From hull method unavailable because"
                " scipy cannot be imported."
                "Please install it if you need it.")

        indices = hull.simplices
        vertices = npPointList[indices]
        hullPoints = list(vertices.flatten())
        hullTriPoints = list(indices.flatten())

        hullArray = OpenMaya.MVectorArray()
        for ind in xrange(0, len(hullPoints), 3):
            hullArray.append(
                OpenMaya.MVector(
                    hullPoints[ind], hullPoints[ind+1], hullPoints[ind+2]))

        triPoints = OpenMaya.MIntArray()
        for tri in xrange(len(hullTriPoints)):
            triPoints.append(tri)

        return self.build_from_triangles(points=hullArray, triangles=triPoints)