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83 lines
3.2 KiB
83 lines
3.2 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 "Crosshair.h" |
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#include "Magnum/Mesh.h" |
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#include "Magnum/Math/Color.h" |
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#include "Magnum/Trade/MeshData.h" |
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namespace Magnum { namespace Primitives { |
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namespace { |
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/* Can't be just an array of Vector2 but has to be a struct, because then MSVC |
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2015 fails with an assertion like |
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Trade::MeshData: attribute 0 [0x7ffd6c4fb290:0x7ffd6c4fb338] is not contained in passed vertexData array [0x7ffd6c4fb170:0x7ffd6c4fb218] |
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which leads me to believe that it will make two copies of the data, one for |
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the MeshAttributeData constructor and one for the MeshData constructor. Same |
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for the Cube, Square and Plane primitives. Interestingly enough, this isn't |
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a problem for index arrays (maybe because those are integers and not |
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constexpr classes?). Also not a problem for MSVC 2017 and up. */ |
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constexpr struct Vertex2D { |
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Vector2 position; |
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} Vertices2D[]{ |
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{{-1.0f, 0.0f}}, {{1.0f, 0.0f}}, |
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{{ 0.0f, -1.0f}}, {{0.0f, 1.0f}} |
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}; |
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constexpr struct Vertex3D { |
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Vector3 position; |
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} Vertices3D[]{ |
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{{-1.0f, 0.0f, 0.0f}}, {{1.0f, 0.0f, 0.0f}}, |
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{{ 0.0f, -1.0f, 0.0f}}, {{0.0f, 1.0f, 0.0f}}, |
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{{ 0.0f, 0.0f, -1.0f}}, {{0.0f, 0.0f, 1.0f}} |
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}; |
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constexpr Trade::MeshAttributeData Attributes2D[]{ |
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Trade::MeshAttributeData{Trade::MeshAttribute::Position, |
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Containers::stridedArrayView(Vertices2D, &Vertices2D[0].position, |
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Containers::arraySize(Vertices2D), sizeof(Vertex2D))} |
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}; |
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constexpr Trade::MeshAttributeData Attributes3D[]{ |
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Trade::MeshAttributeData{Trade::MeshAttribute::Position, |
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Containers::stridedArrayView(Vertices3D, &Vertices3D[0].position, |
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Containers::arraySize(Vertices3D), sizeof(Vertex3D))} |
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}; |
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} |
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Trade::MeshData crosshair2D() { |
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return Trade::MeshData{MeshPrimitive::Lines, {}, Vertices2D, |
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Trade::meshAttributeDataNonOwningArray(Attributes2D)}; |
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} |
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Trade::MeshData crosshair3D() { |
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return Trade::MeshData{MeshPrimitive::Lines, {}, Vertices3D, |
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Trade::meshAttributeDataNonOwningArray(Attributes3D)}; |
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} |
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}}
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