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34 lines
1004 B
34 lines
1004 B
import numpy
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num_segments = 1000
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num_rotations = 10
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def print_curve(r, theta, y, id_offset):
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x = r * numpy.cos(theta)
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z = r * numpy.sin(theta)
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y = numpy.full(x.shape, y)
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V = numpy.hstack([x.reshape(-1, 1), y.reshape(-1, 1), z.reshape(-1, 1)])
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for v in V:
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print("v {:g} {:g} {:g}".format(*v))
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# for i in range(id_offset + 1, id_offset + num_segments):
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# print(f"l {i:d} {i+1:d}")
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theta = numpy.linspace(0, num_rotations * 2 * numpy.pi, num_segments)
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r = (theta + numpy.pi) / (10 * numpy.pi)
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print_curve(r, theta, 0.1, 0)
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r = theta / (10 * numpy.pi)
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print_curve(r, theta, 0, num_segments)
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for i in range(1, num_segments):
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print(f"f {i:d} {i+1:d} {i + num_segments:d}")
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print(f"f {i+num_segments:d} {i+num_segments+1:d} {i+1:d}")
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offset = num_segments // num_rotations
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for i in range(1, num_segments - offset):
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print(f"f {i:d} {i+1:d} {i + num_segments + offset:d}")
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print(f"f {i+num_segments+offset:d} {i+num_segments+offset+1:d} {i+1:d}")
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