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50 lines
1.4 KiB
50 lines
1.4 KiB
14 years ago
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/*
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz>
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This file is part of Magnum.
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Magnum is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 3
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only, as published by the Free Software Foundation.
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Magnum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License version 3 for more details.
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*/
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#include <cassert>
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#include "UVSphere.h"
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using namespace std;
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using namespace Corrade::Utility;
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namespace Magnum { namespace Primitives {
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UVSphere::UVSphere(unsigned int rings, unsigned int segments, TextureCoords textureCoords): Capsule(segments, textureCoords) {
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if(rings < 2 || segments < 3) {
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Error() << "UVSphere must have at least two rings and three segments";
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assert(0);
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}
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GLfloat textureCoordsVIncrement = 1.0f/rings;
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GLfloat ringAngleIncrement = PI/rings;
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/* Bottom cap vertex */
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capVertex(-1.0f, -1.0f, 0.0f);
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/* Vertex rings */
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vertexRings(rings-1, 0.0f, -PI/2+ringAngleIncrement, ringAngleIncrement, textureCoordsVIncrement, textureCoordsVIncrement);
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/* Top cap vertex */
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capVertex(1.0f, 1.0f, 1.0f);
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/* Faces */
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bottomFaceRing();
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faceRings(rings-2);
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topFaceRing();
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}
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}}
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