Method project_onto_axis

pygorithm/geometry/rect2.py:147–176

Project the rect onto the specified axis. .. tip:: This function is extremely fast for vertical or horizontal axises. :param rect: the rect to project :type rect: :class:`pygorithm.geometry.rect2.Rect2` :par

(rect, axis)

    
    @staticmethod
    def project_onto_axis(rect, axis):
        """
        Project the rect onto the specified axis.
        
        .. tip::
        
            This function is extremely fast for vertical or 
            horizontal axises.
        
        :param rect: the rect to project
        :type rect: :class:`pygorithm.geometry.rect2.Rect2`
        :param axis: the axis to project onto (normalized)
        :type axis: :class:`pygorithm.geometry.vector2.Vector2`
        :returns: the projection of the rect along axis
        :rtype: :class:`pygorithm.geometry.axisall.AxisAlignedLine`
        """
        
        if axis.x == 0:
            return axisall.AxisAlignedLine(axis, rect.mincorner.y * axis.y, (rect.mincorner.y + rect.height) * axis.y)
        elif axis.y == 0:
            return axisall.AxisAlignedLine(axis, rect.mincorner.x * axis.x, (rect.mincorner.x + rect.width) * axis.x)
        
        p1 = rect.mincorner.dot(axis)
        p2 = vector2.Vector2(rect.mincorner.x + rect.width, rect.mincorner.y).dot(axis)
        p3 = vector2.Vector2(rect.mincorner.x + rect.width, rect.mincorner.y + rect.height).dot(axis)
        p4 = vector2.Vector2(rect.mincorner.x, rect.mincorner.y + rect.height).dot(axis)
        
        _min = min(p1, p2, p3, p4)
        _max = max(p1, p2, p3, p4)
        return axisall.AxisAlignedLine(axis, _min, _max)
        
    @staticmethod
    def contains_point(rect, point):