mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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143 lines
5.2 KiB
Python
143 lines
5.2 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# Copyright (C) Pixar. All rights reserved.
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#
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# This license governs use of the accompanying software. If you
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# use the software, you accept this license. If you do not accept
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# the license, do not use the software.
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#
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# 1. Definitions
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# The terms "reproduce," "reproduction," "derivative works," and
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# "distribution" have the same meaning here as under U.S.
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# copyright law. A "contribution" is the original software, or
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# any additions or changes to the software.
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# A "contributor" is any person or entity that distributes its
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# contribution under this license.
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# "Licensed patents" are a contributor's patent claims that read
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# directly on its contribution.
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#
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# 2. Grant of Rights
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# (A) Copyright Grant- Subject to the terms of this license,
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# including the license conditions and limitations in section 3,
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# each contributor grants you a non-exclusive, worldwide,
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# royalty-free copyright license to reproduce its contribution,
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# prepare derivative works of its contribution, and distribute
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# its contribution or any derivative works that you create.
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# (B) Patent Grant- Subject to the terms of this license,
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# including the license conditions and limitations in section 3,
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# each contributor grants you a non-exclusive, worldwide,
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# royalty-free license under its licensed patents to make, have
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# made, use, sell, offer for sale, import, and/or otherwise
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# dispose of its contribution in the software or derivative works
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# of the contribution in the software.
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#
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# 3. Conditions and Limitations
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# (A) No Trademark License- This license does not grant you
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# rights to use any contributor's name, logo, or trademarks.
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# (B) If you bring a patent claim against any contributor over
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# patents that you claim are infringed by the software, your
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# patent license from such contributor to the software ends
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# automatically.
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# (C) If you distribute any portion of the software, you must
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# retain all copyright, patent, trademark, and attribution
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# notices that are present in the software.
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# (D) If you distribute any portion of the software in source
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# code form, you may do so only under this license by including a
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# complete copy of this license with your distribution. If you
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# distribute any portion of the software in compiled or object
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# code form, you may only do so under a license that complies
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# with this license.
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# (E) The software is licensed "as-is." You bear the risk of
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# using it. The contributors give no express warranties,
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# guarantees or conditions. You may have additional consumer
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# rights under your local laws which this license cannot change.
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# To the extent permitted under your local laws, the contributors
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# exclude the implied warranties of merchantability, fitness for
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# a particular purpose and non-infringement.
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#
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from PyQt4 import QtGui, QtCore
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from window import Window
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from renderer import Renderer
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import sys
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import numpy as np
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import osd
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def main():
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app = QtGui.QApplication(sys.argv)
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renderer = Renderer()
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win = Window(renderer)
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win.raise_()
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verts = [ 0.0, -1.414214, 1.0, # 0
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1.414214, 0.0, 1.0, # 1
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-1.414214, 0.0, 1.0, # 2
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0.0, 1.414214, 1.0, # 3
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-1.414214, 0.0, -1.0, # 4
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0.0, 1.414214, -1.0, # 5
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0.0, -1.414214, -1.0, # 6
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1.414214, 0.0, -1.0 ] # 7
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verts = np.array(verts, np.float32).reshape((-1, 3))
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faces = [ (0,1,3,2), # 0
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(2,3,5,4), # 1
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(4,5,7,6), # 2
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(6,7,1,0), # 3
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(1,7,5,3), # 4
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(6,0,2,4) ] # 5
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topo = osd.Topology(faces)
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topo.boundaryMode = osd.BoundaryMode.EDGE_ONLY
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for v in (2, 3, 4, 5):
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topo.vertices[v].sharpness = 2.0
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for e in xrange(4):
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topo.faces[3].edges[e].sharpness = 3
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topo.finalize()
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subdivider = osd.Subdivider(
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topo,
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vertexLayout = 'f4, f4, f4',
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indexType = np.uint32,
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levels = 4)
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subdivider.setCoarseVertices(verts)
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subdivider.refine()
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inds = subdivider.getRefinedQuads()
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renderer.updateIndicesVbo(inds)
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def animateVerts():
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from time import time
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import math
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t = 4 * time()
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t = 0
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t = 0.5 + 0.5 * math.sin(t)
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t = 0.25 + t * 0.75
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a = np.array([ 0.0, -1.414214, 1.0])
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b = np.array([ 1.414214, 0.0, 1.0])
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c = np.array([ 0.0, -1.414214, -1.0])
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d = np.array([1.414214, 0.0, -1.0 ])
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center = (a + b + c + d) / 4
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center = np.multiply(center, 1-t)
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verts[0] = center + np.multiply(a, t)
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verts[1] = center + np.multiply(b, t)
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verts[6] = center + np.multiply(c, t)
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verts[7] = center + np.multiply(d, t)
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def updateAnimation():
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animateVerts()
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subdivider.setCoarseVertices(verts)
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subdivider.refine()
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pts = subdivider.getRefinedVertices()
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renderer.updatePointsVbo(pts)
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updateAnimation()
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renderer.drawHook = updateAnimation
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retcode = app.exec_()
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sys.exit(retcode)
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if __name__ == '__main__':
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main()
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