77 lines
1.7 KiB
Python
77 lines
1.7 KiB
Python
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from grid import grid
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from baker.tools import exact_func_3D
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import numpy as np
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class simple_rect_grid(grid):
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def __init__(self, xres = 5, yres = 5, zres = 5):
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xmin = -1.0
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xmax = 1.0
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xspan = xmax - xmin
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xdel = xspan / float(xres - 1)
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ymin = -1.0
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ymay = 1.0
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yspan = ymay - ymin
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ydel = yspan / float(yres - 1)
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zmin = -1.0
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zmaz = 1.0
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zspan = zmaz - zmin
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zdel = zspan / float(zres - 1)
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points = []
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q = []
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for x in xrange(xres):
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cur_x = xmin + (x * xdel)
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for y in xrange(yres):
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cur_y = ymin + (y * ydel)
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for z in xrange(zres):
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cur_z = zmin + (z * zdel)
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points.append([cur_x, cur_y, cur_z])
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q.append(exact_func_3D((cur_x, cur_y, cur_z)))
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grid.__init__(self, points, q)
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# self.construct_connectivity()
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def for_qhull_generator(self):
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"""
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this returns a generator that should be fed into qdelaunay
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"""
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yield '3';
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yield '%d' % len(self.points)
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for p in self.points:
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yield "%f %f %f" % tuple(p)
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def for_qhull(self):
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"""
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this returns a single string that should be fed into qdelaunay
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"""
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r = '3\n'
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r += '%d\n' % len(self.points)
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for p in self.points:
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r += "%f %f %f\n" % tuple(p)
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return r
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class simple_random_grid(simple_rect_grid):
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def __init__(self, num_points = 10):
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points = []
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q = []
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r = np.random
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for i in xrange(num_points):
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cur_x = r.rand()
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cur_y = r.rand()
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cur_z = r.rand()
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points.append([cur_x, cur_y, cur_z])
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q.append(exact_func_3D((cur_x, cur_y, cur_z)))
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grid.__init__(self, points, q)
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self.points = np.array(self.points)
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self.q = np.array(self.q)
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