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98 lines
4.1 KiB
98 lines
4.1 KiB
/* |
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This file is part of Magnum. |
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Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
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Vladimír Vondruš <mosra@centrum.cz> |
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Permission is hereby granted, free of charge, to any person obtaining a |
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copy of this software and associated documentation files (the "Software"), |
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to deal in the Software without restriction, including without limitation |
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the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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and/or sell copies of the Software, and to permit persons to whom the |
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Software is furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included |
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in all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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DEALINGS IN THE SOFTWARE. |
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*/ |
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#include "Cylinder.h" |
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#include "Magnum/Mesh.h" |
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#include "Magnum/Math/Color.h" |
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#include "Magnum/Primitives/Implementation/Spheroid.h" |
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#include "Magnum/Primitives/Implementation/WireframeSpheroid.h" |
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#include "Magnum/Trade/MeshData3D.h" |
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namespace Magnum { namespace Primitives { |
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Trade::MeshData3D cylinderSolid(const UnsignedInt rings, const UnsignedInt segments, const Float halfLength, const CylinderFlags flags) { |
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CORRADE_ASSERT(rings >= 1 && segments >= 3, |
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"Primitives::cylinderSolid(): at least one ring and three segments expected", |
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(Trade::MeshData3D{MeshPrimitive::Triangles, {}, {}, {}, {}, {}, nullptr})); |
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Implementation::Spheroid cylinder(segments, flags & CylinderFlag::GenerateTextureCoords ? Implementation::Spheroid::TextureCoords::Generate : Implementation::Spheroid::TextureCoords::DontGenerate); |
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const Float length = 2.0f*halfLength; |
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const Float textureCoordsV = flags & CylinderFlag::CapEnds ? 1.0f/(length+2.0f) : 0.0f; |
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/* Bottom cap */ |
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if(flags & CylinderFlag::CapEnds) { |
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cylinder.capVertex(-halfLength, -1.0f, 0.0f); |
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cylinder.capVertexRing(-halfLength, textureCoordsV, Vector3::yAxis(-1.0f)); |
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} |
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/* Vertex rings */ |
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cylinder.cylinderVertexRings(rings+1, -halfLength, {0.0f, length/rings}, textureCoordsV, length/(rings*(flags & CylinderFlag::CapEnds ? length + 2.0f : length))); |
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/* Top cap */ |
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if(flags & CylinderFlag::CapEnds) { |
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cylinder.capVertexRing(halfLength, 1.0f - textureCoordsV, Vector3::yAxis(1.0f)); |
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cylinder.capVertex(halfLength, 1.0f, 1.0f); |
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} |
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/* Faces */ |
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if(flags & CylinderFlag::CapEnds) cylinder.bottomFaceRing(); |
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cylinder.faceRings(rings, flags & CylinderFlag::CapEnds ? (1 + segments) : 0); |
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if(flags & CylinderFlag::CapEnds) cylinder.topFaceRing(); |
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return cylinder.finalize(); |
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} |
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Trade::MeshData3D cylinderWireframe(const UnsignedInt rings, const UnsignedInt segments, const Float halfLength) { |
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CORRADE_ASSERT(rings >= 1 && segments >= 4 && segments%4 == 0, |
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"Primitives::cylinderWireframe(): at least one ring and multiples of 4 segments expected", |
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(Trade::MeshData3D{MeshPrimitive::Lines, {}, {}, {}, {}, {}, nullptr})); |
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Implementation::WireframeSpheroid cylinder(segments/4); |
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const Float increment = 2*halfLength/rings; |
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/* Rings */ |
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cylinder.ring(-halfLength); |
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for(UnsignedInt i = 0; i != rings; ++i) { |
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cylinder.cylinder(); |
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cylinder.ring(-halfLength + (i+1)*increment); |
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} |
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return cylinder.finalize(); |
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} |
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#ifdef MAGNUM_BUILD_DEPRECATED |
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Trade::MeshData3D Cylinder::solid(const UnsignedInt rings, const UnsignedInt segments, const Float halfLength, const CylinderFlags flags) { |
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return cylinderSolid(rings, segments, halfLength, flags); |
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} |
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Trade::MeshData3D Cylinder::wireframe(const UnsignedInt rings, const UnsignedInt segments, const Float halfLength) { |
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return cylinderWireframe(rings, segments, halfLength); |
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} |
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#endif |
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}}
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