mattishi

import Rhino

class DrainBoid(object):
    def __init__(self, point3d, surface, stepsize=0.5, maxsteps=None, tolerance=0.001):
        self.start = point3d
        self.pos = self.start
        result, self.u, self.v = surface.ClosestPoint(self.pos)
        self.surface = surface
        self.stepsize = stepsize
        self.points = [self.start]

mattishi

// Written by Michael Carter (kiliman@systemex.net)
// Copyright (c) 2012. All rights reserved.
//
// Redistribution and use of this code WITHOUT MODIFICATIONS are permitted provided that
// the following conditions are met:
// 1. Redistributions must retain the above copyright notice, this list of conditions
//  and the following disclaimer.
// 2. Neither the name of an author nor the names of the contributors may be used
//	to endorse or promote products derived from this software without specific
//	prior written permission.