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keep triangles together in base 3d engine

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Laura Klünder 2017-11-09 20:04:25 +01:00
parent 37e9dcc1f6
commit b2da4df1c4
2 changed files with 8 additions and 7 deletions
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6
src/c3nav/mapdata/render/engines/opengl.py
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@ -166,10 +166,10 @@ class OpenGLEngine(Base3DEngine):
lines = unary_union(lines).buffer(width, cap_style=CAP_STYLE.flat, join_style=JOIN_STYLE.mitre)
vertices, faces = triangulate_polygon(lines)
triangles = np.hstack((vertices[faces.flatten()], np.full((faces.size, 1), fill_value=altitude)))
vertices = np.vstack(triangles).astype(np.float32) * self.np_scale + self.np_offset
triangles = np.dstack((vertices[faces], np.full((faces.size, 1), fill_value=altitude).reshape((-1, 3, 1))))
triangles = triangles.astype(np.float32) * self.np_scale + self.np_offset
return self._append_to_vertices(vertices, append).flatten()
return self._append_to_vertices(triangles, append).flatten()
worker = OpenGLWorker()