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170 lines
7.5 KiB
170 lines
7.5 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 "Capsule.h" |
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#include "Magnum/Math/Color.h" |
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#include "Magnum/Math/Functions.h" |
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#include "Magnum/Mesh.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/MeshData2D.h" |
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#include "Magnum/Trade/MeshData3D.h" |
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namespace Magnum { namespace Primitives { |
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Trade::MeshData2D capsule2DWireframe(const UnsignedInt hemisphereRings, const UnsignedInt cylinderRings, const Float halfLength) { |
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CORRADE_ASSERT(hemisphereRings >= 1 && cylinderRings >= 1, |
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"Primitives::capsule2DWireframe(): at least one hemisphere ring and one cylinder ring expected", |
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(Trade::MeshData2D{MeshPrimitive::Triangles, {}, {}, {}, {}, nullptr})); |
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std::vector<Vector2> positions; |
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positions.reserve(hemisphereRings*4+2+(cylinderRings-1)*2); |
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const Rad angleIncrement(Constants::piHalf()/hemisphereRings); |
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const Float cylinderIncrement = 2.0f*halfLength/cylinderRings; |
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/* Bottom cap vertex */ |
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positions.emplace_back(0.0f, -halfLength-1.0f); |
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/* Bottom hemisphere */ |
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for(UnsignedInt i = 0; i != hemisphereRings; ++i) { |
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const Rad angle(Float(i+1)*angleIncrement); |
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const Float x = Math::sin(angle); |
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const Float y = -Math::cos(angle)-halfLength; |
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positions.insert(positions.end(), {{-x, y}, {x, y}}); |
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} |
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/* Cylinder (bottom and top vertices are done within caps */ |
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for(UnsignedInt i = 0; i != cylinderRings-1; ++i) { |
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const Float y = (i+1)*cylinderIncrement-halfLength; |
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positions.insert(positions.end(), {{-1.0f, y}, {1.0f, y}}); |
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} |
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/* Top hemisphere */ |
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for(UnsignedInt i = 0; i != hemisphereRings; ++i) { |
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const Rad angle(Float(i)*angleIncrement); |
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const Float x = Math::cos(angle); |
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const Float y = Math::sin(angle)+halfLength; |
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positions.insert(positions.end(), {{-x, y}, {x, y}}); |
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} |
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/* Top cap vertex */ |
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positions.emplace_back(0.0f, halfLength+1.0f); |
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std::vector<UnsignedInt> indices; |
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indices.reserve(hemisphereRings*8+cylinderRings*4); |
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/* Bottom cap indices */ |
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indices.insert(indices.end(), {0, 1, 0, 2}); |
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/* Side indices */ |
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for(UnsignedInt i = 0; i != cylinderRings+hemisphereRings*2-2; ++i) |
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indices.insert(indices.end(), {i*2+1, i*2+3, |
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i*2+2, i*2+4}); |
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/* Top cap indices */ |
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indices.insert(indices.end(), |
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{UnsignedInt(positions.size())-3, UnsignedInt(positions.size())-1, |
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UnsignedInt(positions.size())-2, UnsignedInt(positions.size())-1}); |
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return Trade::MeshData2D{MeshPrimitive::Lines, std::move(indices), {std::move(positions)}, {}, {}, nullptr}; |
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} |
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Trade::MeshData3D capsule3DSolid(const UnsignedInt hemisphereRings, const UnsignedInt cylinderRings, const UnsignedInt segments, const Float halfLength, const CapsuleTextureCoords textureCoords) { |
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CORRADE_ASSERT(hemisphereRings >= 1 && cylinderRings >= 1 && segments >= 3, |
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"Primitives::capsule3DSolid(): at least one hemisphere ring, one cylinder ring and three segments expected", |
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(Trade::MeshData3D{MeshPrimitive::Triangles, {}, {}, {}, {}, {}, nullptr})); |
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Implementation::Spheroid capsule(segments, textureCoords == CapsuleTextureCoords::Generate ? |
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Implementation::Spheroid::TextureCoords::Generate : |
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Implementation::Spheroid::TextureCoords::DontGenerate); |
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Float height = 2.0f+2.0f*halfLength; |
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Float hemisphereTextureCoordsVIncrement = 1.0f/(hemisphereRings*height); |
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Rad hemisphereRingAngleIncrement(Constants::piHalf()/hemisphereRings); |
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/* Bottom cap vertex */ |
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capsule.capVertex(-height/2, -1.0f, 0.0f); |
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/* Rings of bottom hemisphere */ |
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capsule.hemisphereVertexRings(hemisphereRings-1, -halfLength, -Rad(Constants::piHalf())+hemisphereRingAngleIncrement, hemisphereRingAngleIncrement, hemisphereTextureCoordsVIncrement, hemisphereTextureCoordsVIncrement); |
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/* Rings of cylinder */ |
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capsule.cylinderVertexRings(cylinderRings+1, -halfLength, {0.0f, 2.0f*halfLength/cylinderRings}, 1.0f/height, 2.0f*halfLength/(cylinderRings*height)); |
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/* Rings of top hemisphere */ |
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capsule.hemisphereVertexRings(hemisphereRings-1, halfLength, hemisphereRingAngleIncrement, hemisphereRingAngleIncrement, (1.0f + 2.0f*halfLength)/height+hemisphereTextureCoordsVIncrement, hemisphereTextureCoordsVIncrement); |
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/* Top cap vertex */ |
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capsule.capVertex(height/2, 1.0f, 1.0f); |
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/* Faces */ |
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capsule.bottomFaceRing(); |
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capsule.faceRings(hemisphereRings*2-2+cylinderRings); |
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capsule.topFaceRing(); |
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return capsule.finalize(); |
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} |
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Trade::MeshData3D capsule3DWireframe(const UnsignedInt hemisphereRings, const UnsignedInt cylinderRings, const UnsignedInt segments, const Float halfLength) { |
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CORRADE_ASSERT(hemisphereRings >= 1 && cylinderRings >= 1 && segments >= 4 && segments%4 == 0, |
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"Primitives::capsule3DWireframe(): at least one hemisphere and cylinder ring and multiples of 4 segments expected", |
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(Trade::MeshData3D{MeshPrimitive::Triangles, {}, {}, {}, {}, {}, nullptr})); |
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Implementation::WireframeSpheroid capsule(segments/4); |
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/* Bottom hemisphere */ |
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capsule.bottomHemisphere(-halfLength, hemisphereRings); |
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/* Cylinder */ |
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capsule.ring(-halfLength); |
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for(UnsignedInt i = 0; i != cylinderRings; ++i) { |
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capsule.cylinder(); |
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capsule.ring(-halfLength + (i+1)*(2.0f*halfLength/cylinderRings)); |
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} |
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/* Top hemisphere */ |
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capsule.topHemisphere(halfLength, hemisphereRings); |
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return capsule.finalize(); |
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} |
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#ifdef MAGNUM_BUILD_DEPRECATED |
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/* LCOV_EXCL_START */ |
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Trade::MeshData2D Capsule2D::wireframe(const UnsignedInt hemisphereRings, const UnsignedInt cylinderRings, const Float halfLength) { |
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return capsule2DWireframe(hemisphereRings, cylinderRings, halfLength); |
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} |
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Trade::MeshData3D Capsule3D::solid(const UnsignedInt hemisphereRings, const UnsignedInt cylinderRings, const UnsignedInt segments, const Float halfLength, const CapsuleTextureCoords textureCoords) { |
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return capsule3DSolid(hemisphereRings, cylinderRings, segments, halfLength, textureCoords); |
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} |
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Trade::MeshData3D Capsule3D::wireframe(const UnsignedInt hemisphereRings, const UnsignedInt cylinderRings, const UnsignedInt segments, const Float halfLength) { |
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return capsule3DWireframe(hemisphereRings, cylinderRings, segments, halfLength); |
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} |
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/* LCOV_EXCL_STOP */ |
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#endif |
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}}
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