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78 lines
3.3 KiB
78 lines
3.3 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, 2019 |
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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 "Cone.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/MeshData.h" |
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namespace Magnum { namespace Primitives { |
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Trade::MeshData coneSolid(const UnsignedInt rings, const UnsignedInt segments, const Float halfLength, const ConeFlags flags) { |
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CORRADE_ASSERT(rings >= 1 && segments >= 3, |
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"Primitives::coneSolid(): at least one ring and three segments expected", |
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(Trade::MeshData{MeshPrimitive::Triangles, 0})); |
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Implementation::Spheroid cone{segments, flags & ConeFlag::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 & ConeFlag::CapEnd ? 1.0f/(length + 1.0f) : 0.0f; |
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/* Bottom cap */ |
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if(flags & ConeFlag::CapEnd) { |
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cone.capVertex(-halfLength, -1.0f, 0.0f); |
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cone.capVertexRing(-halfLength, textureCoordsV, Vector3::yAxis(-1.0f)); |
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} |
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/* Vertex rings */ |
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cone.cylinderVertexRings(rings+1, -halfLength, {-1.0f/rings, length/rings}, textureCoordsV, length/(rings*(flags & ConeFlag::CapEnd ? length + 1.0f : length))); |
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/* Faces. Account for the extra vertices for caps and texture coords. */ |
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if(flags & ConeFlag::CapEnd) cone.bottomFaceRing(); |
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if(flags >= (ConeFlag::CapEnd|ConeFlag::GenerateTextureCoords)) |
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cone.faceRings(rings, 2 + segments); |
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else if(flags & ConeFlag::CapEnd) |
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cone.faceRings(rings, 1 + segments); |
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else |
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cone.faceRings(rings, 0); |
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return cone.finalize(); |
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} |
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Trade::MeshData coneWireframe(const UnsignedInt segments, const Float halfLength) { |
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CORRADE_ASSERT(segments >= 4 && segments%4 == 0, |
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"Primitives::coneWireframe(): multiples of 4 segments expected", |
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(Trade::MeshData{MeshPrimitive::Lines, 0})); |
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Implementation::WireframeSpheroid cone{segments/4}; |
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cone.ring(-halfLength); |
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cone.topHemisphere(halfLength - 1.0f, 1); |
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return cone.finalize(); |
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} |
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}}
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