mirror of https://github.com/mosra/magnum.git
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Now every primitive can be created using `solid()` or `wireframe()` function returning directly Trade::MeshData.pull/278/head
Vladimír Vondruš
13 years ago
13 changed files with 313 additions and 217 deletions
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/*
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This file is part of Magnum. |
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Copyright © 2010, 2011, 2012, 2013 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 "Spheroid.h" |
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#include "Math/Functions.h" |
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#include "Math/Vector3.h" |
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namespace Magnum { namespace Primitives { namespace Implementation { |
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Spheroid::Spheroid(UnsignedInt segments, TextureCoords textureCoords): MeshData3D(Mesh::Primitive::Triangles, new std::vector<UnsignedInt>, {new std::vector<Vector3>()}, {new std::vector<Vector3>()}, textureCoords == TextureCoords::Generate ? std::vector<std::vector<Vector2>*>{new std::vector<Vector2>()} : std::vector<std::vector<Vector2>*>()), segments(segments), textureCoords(textureCoords) {} |
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void Spheroid::capVertex(Float y, Float normalY, Float textureCoordsV) { |
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positions(0)->push_back({0.0f, y, 0.0f}); |
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normals(0)->push_back({0.0f, normalY, 0.0f}); |
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if(textureCoords == TextureCoords::Generate) |
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textureCoords2D(0)->push_back({0.5, textureCoordsV}); |
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} |
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void Spheroid::hemisphereVertexRings(UnsignedInt count, Float centerY, Rad startRingAngle, Rad ringAngleIncrement, Float startTextureCoordsV, Float textureCoordsVIncrement) { |
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Rad segmentAngleIncrement(2*Constants::pi()/segments); |
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Float x, y, z; |
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for(UnsignedInt i = 0; i != count; ++i) { |
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Rad ringAngle = startRingAngle + i*ringAngleIncrement; |
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x = z = Math::cos(ringAngle); |
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y = Math::sin(ringAngle); |
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for(UnsignedInt j = 0; j != segments; ++j) { |
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Rad segmentAngle = j*segmentAngleIncrement; |
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positions(0)->push_back({x*Math::sin(segmentAngle), centerY+y, z*Math::cos(segmentAngle)}); |
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normals(0)->push_back({x*Math::sin(segmentAngle), y, z*Math::cos(segmentAngle)}); |
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if(textureCoords == TextureCoords::Generate) |
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textureCoords2D(0)->push_back({j*1.0f/segments, startTextureCoordsV + i*textureCoordsVIncrement}); |
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} |
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/* Duplicate first segment in the ring for additional vertex for texture coordinate */ |
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if(textureCoords == TextureCoords::Generate) { |
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positions(0)->push_back((*positions(0))[positions(0)->size()-segments]); |
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normals(0)->push_back((*normals(0))[normals(0)->size()-segments]); |
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textureCoords2D(0)->push_back({1.0f, startTextureCoordsV + i*textureCoordsVIncrement}); |
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} |
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} |
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} |
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void Spheroid::cylinderVertexRings(UnsignedInt count, Float startY, Float yIncrement, Float startTextureCoordsV, Float textureCoordsVIncrement) { |
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Rad segmentAngleIncrement(2*Constants::pi()/segments); |
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for(UnsignedInt i = 0; i != count; ++i) { |
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for(UnsignedInt j = 0; j != segments; ++j) { |
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Rad segmentAngle = j*segmentAngleIncrement; |
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positions(0)->push_back({Math::sin(segmentAngle), startY, Math::cos(segmentAngle)}); |
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normals(0)->push_back({Math::sin(segmentAngle), 0.0f, Math::cos(segmentAngle)}); |
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if(textureCoords == TextureCoords::Generate) |
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textureCoords2D(0)->push_back({j*1.0f/segments, startTextureCoordsV + i*textureCoordsVIncrement}); |
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} |
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/* Duplicate first segment in the ring for additional vertex for texture coordinate */ |
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if(textureCoords == TextureCoords::Generate) { |
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positions(0)->push_back((*positions(0))[positions(0)->size()-segments]); |
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normals(0)->push_back((*normals(0))[normals(0)->size()-segments]); |
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textureCoords2D(0)->push_back({1.0f, startTextureCoordsV + i*textureCoordsVIncrement}); |
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} |
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startY += yIncrement; |
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} |
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} |
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void Spheroid::bottomFaceRing() { |
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for(UnsignedInt j = 0; j != segments; ++j) { |
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/* Bottom vertex */ |
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indices()->push_back(0); |
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/* Top right vertex */ |
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indices()->push_back((j != segments-1 || textureCoords == TextureCoords::Generate) ? |
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j+2 : 1); |
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/* Top left vertex */ |
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indices()->push_back(j+1); |
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} |
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} |
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void Spheroid::faceRings(UnsignedInt count, UnsignedInt offset) { |
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UnsignedInt vertexSegments = segments + (textureCoords == TextureCoords::Generate ? 1 : 0); |
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for(UnsignedInt i = 0; i != count; ++i) { |
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for(UnsignedInt j = 0; j != segments; ++j) { |
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UnsignedInt bottomLeft = i*vertexSegments+j+offset; |
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UnsignedInt bottomRight = ((j != segments-1 || textureCoords == TextureCoords::Generate) ? |
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i*vertexSegments+j+1+offset : i*segments+offset); |
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UnsignedInt topLeft = bottomLeft+vertexSegments; |
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UnsignedInt topRight = bottomRight+vertexSegments; |
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indices()->push_back(bottomLeft); |
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indices()->push_back(bottomRight); |
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indices()->push_back(topRight); |
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indices()->push_back(bottomLeft); |
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indices()->push_back(topRight); |
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indices()->push_back(topLeft); |
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} |
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} |
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} |
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void Spheroid::topFaceRing() { |
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UnsignedInt vertexSegments = segments + (textureCoords == TextureCoords::Generate ? 1 : 0); |
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for(UnsignedInt j = 0; j != segments; ++j) { |
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/* Bottom left vertex */ |
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indices()->push_back(normals(0)->size()-vertexSegments+j-1); |
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/* Bottom right vertex */ |
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indices()->push_back((j != segments-1 || textureCoords == TextureCoords::Generate) ? |
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normals(0)->size()-vertexSegments+j : normals(0)->size()-segments-1); |
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/* Top vertex */ |
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indices()->push_back(normals(0)->size()-1); |
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} |
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} |
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void Spheroid::capVertexRing(Float y, Float textureCoordsV, const Vector3& normal) { |
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Rad segmentAngleIncrement(2*Constants::pi()/segments); |
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for(UnsignedInt i = 0; i != segments; ++i) { |
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Rad segmentAngle = i*segmentAngleIncrement; |
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positions(0)->push_back({Math::sin(segmentAngle), y, Math::cos(segmentAngle)}); |
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normals(0)->push_back(normal); |
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if(textureCoords == TextureCoords::Generate) |
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textureCoords2D(0)->push_back({i*1.0f/segments, textureCoordsV}); |
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} |
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/* Duplicate first segment in the ring for additional vertex for texture coordinate */ |
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if(textureCoords == TextureCoords::Generate) { |
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positions(0)->push_back((*positions(0))[positions(0)->size()-segments]); |
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normals(0)->push_back(normal); |
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textureCoords2D(0)->push_back({1.0f, textureCoordsV}); |
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} |
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} |
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}}} |
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@ -0,0 +1,54 @@
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#ifndef Magnum_Primitives_Spheroid_h |
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#define Magnum_Primitives_Spheroid_h |
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/*
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This file is part of Magnum. |
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Copyright © 2010, 2011, 2012, 2013 Vladimír Vondruš <mosra@centrum.cz> |
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|
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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"), |
||||
to deal in the Software without restriction, including without limitation |
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the rights to use, copy, modify, merge, publish, distribute, sublicense, |
||||
and/or sell copies of the Software, and to permit persons to whom the |
||||
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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|
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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 "Trade/MeshData3D.h" |
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namespace Magnum { namespace Primitives { namespace Implementation { |
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class Spheroid: public Trade::MeshData3D { |
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public: |
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enum class TextureCoords: UnsignedByte { |
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DontGenerate, |
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Generate |
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}; |
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Spheroid(UnsignedInt segments, TextureCoords textureCoords); |
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void capVertex(Float y, Float normalY, Float textureCoordsV); |
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void hemisphereVertexRings(UnsignedInt count, Float centerY, Rad startRingAngle, Rad ringAngleIncrement, Float startTextureCoordsV, Float textureCoordsVIncrement); |
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void cylinderVertexRings(UnsignedInt count, Float startY, Float yIncrement, Float startTextureCoordsV, Float textureCoordsVIncrement); |
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void bottomFaceRing(); |
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void faceRings(UnsignedInt count, UnsignedInt offset = 1); |
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void topFaceRing(); |
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void capVertexRing(Float y, Float textureCoordsV, const Vector3& normal); |
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UnsignedInt segments; |
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TextureCoords textureCoords; |
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}; |
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}}} |
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#endif |
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