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meshtoy-GTS.py
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meshtoy-GTS.py
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import time
import math
import logging
import numpy as np
import gts
from noise import pnoise3
import meshexport
# FORMAT = '%(levelname)s - %(threadName)s: %(message)s'
FORMAT = '%(message)s'
logging.basicConfig(format=FORMAT,
level=logging.DEBUG)
def LineSegmentFactory((x1, y1, z1), (x2, y2, z2), radius=1):
a = np.array([x1, y1, z1])
dx, dy, dz = x2 - x1, y2 - y1, z2 - z1
# TODO
return lambda x, y, z: x
FREQUENCY = 0.05
AMPLITUDE = 1000.0
# Create the volume
def f(x, y, z):
return x ** 2 + y ** 2 + z ** 2 # + AMPLITUDE * \
# pnoise3(x * FREQUENCY, y * FREQUENCY, z * FREQUENCY, octaves=2)
def main():
logging.info("Example 2: Isosurface in Python function...")
logging.info("(this might take a while...)")
samples = 200
bounds = 8
t = time.time()
# Extract the 16-isosurface
vertices, triangles = mcubes.marching_cubes_func(
(-0, -0, -0),
(bounds, bounds, bounds),
samples, samples, samples,
f, # Implicit function
16) # Isosurface value
logging.info("mesh completed in %f seconds" % (time.time() - t))
logging.debug("vertices: {} length: {}".format(type(vertices), len(vertices)))
logging.debug(vertices)
logging.debug("triangles: {} length: {}".format(type(triangles), len(triangles)))
logging.debug(triangles)
meshexport.export(vertices, triangles)
# meshexport.preview(triangles, vertices)
def main2():
logging.info("(this might take a while...)")
samples = 50
t = time.time()
#from stl import mesh
diameter = 10
radius = diameter / 2
half= radius / 2
u = np.ndarray((200,200,200))
for X in range(-100,100):
for Y in range(-100,100):
for Z in range(-100,100):
u[X+100,Y+100,Z+100] = ((X)**2 + (Y)**2 + (Z)**2) + pnoise3(X*0.05,Y*0.05,Z*0.05,octaves=3)*30
logging.debug("u")
logging.debug(u)
vertices, triangles = gts.marching_cubes(u, 60)
logging.info("mesh completed in %f seconds" % (time.time() - t))
meshexport.export(vertices, triangles)
#meshexport.preview(triangles, vertices)
def main3():
logging.info("(this might take a while...)")
t = time.time()
# from stl import mesh
samples = 200
radius = samples / 2.0
half = radius / 2.0
array = np.ndarray((samples, samples, samples))
for x in range(samples):
for y in range(samples):
for z in range(samples):
noise = AMPLITUDE * pnoise3(x * FREQUENCY, y * FREQUENCY, z * FREQUENCY, octaves=2)
array[x, y, z] = x ** 2 + y ** 2 + z ** 2 - half ** 2 + noise
logging.debug("array")
logging.debug(array)
# Extract the 0-isosurface
#vertices, triangles = mcubes.marching_cubes(array, 0)
surface = gts.isosurface(array,0)
logging.info("mesh completed in %f seconds" % (time.time() - t))
print surface
surface.write(open('shape.gts', 'w'))
#meshexport.export(vertices, triangles)
# meshexport.preview(triangles, vertices)
def main4():
logging.info("(this might take a while...)")
t = time.time()
# from stl import mesh
samples = 50
diameter = samples
radius = diameter / 2.0
half = radius / 2.0
def octant(x_offset, y_offset, z_offset):
array = np.ndarray((samples, samples, samples))
for x in range(samples):
for y in range(samples):
for z in range(samples):
x2, y2, z2 = x + x_offset, y + y_offset, z + z_offset
noise = AMPLITUDE * pnoise3(x2 * FREQUENCY, y2 * FREQUENCY, z2 * FREQUENCY, octaves=2)
array[x, y, z] = x2 ** 2 + y2 ** 2 + z2 ** 2 - half ** 2 + noise
logging.debug("array")
logging.debug(array)
# Extract the 0-isosurface
return mcubes.marching_cubes(array, 0)
vertices, triangles = None, None
offset = -1.0 * diameter
for tuple in [(0, 0, 0), (0, 0, offset), (0, offset, 0), (0, offset, offset),
(offset, 0, 0), (offset, 0, offset), (offset, offset, 0), (offset, offset, offset)]:
octant_verts, octant_tris = octant(*tuple)
meshexport.export(octant_verts, octant_tris)
vertices = octant_verts if vertices is None else np.concatenate([vertices, octant_verts])
triangles = octant_tris if triangles is None else np.concatenate([triangles, octant_tris])
logging.info("mesh completed in %f seconds" % (time.time() - t))
meshexport.export(octant_verts, octant_tris, "combined", "combined")
# meshexport.preview(triangles, vertices)
if __name__ == "__main__":
main3()