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import opencog.spacetime.geometry.IndexedFaceSetUtility;
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import opencog.spacetime.geometry.Primitives;
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import opencog.spacetime.shader.DefaultGeometryShader;
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import opencog.spacetime.shader.DefaultLineShader;
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import opencog.spacetime.shader.DefaultPointShader;
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import opencog.spacetime.shader.DefaultPolygonShader;
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import opencog.spacetime.shader.DefaultTextShader;
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import opencog.spacetime.shader.ShaderUtility;
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import opencog.spacetime.util.SystemProperties;