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192 lines
6.8 KiB
192 lines
6.8 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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2020, 2021, 2022, 2023 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 "Cube.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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/* not 8-bit because GPUs (and Vulkan) don't like it nowadays */ |
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constexpr UnsignedShort IndicesSolid[]{ |
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0, 1, 2, 0, 2, 3, /* +Z */ |
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4, 5, 6, 4, 6, 7, /* +X */ |
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8, 9, 10, 8, 10, 11, /* +Y */ |
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12, 13, 14, 12, 14, 15, /* -Z */ |
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16, 17, 18, 16, 18, 19, /* -Y */ |
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20, 21, 22, 20, 22, 23 /* -X */ |
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}; |
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constexpr struct VertexSolid { |
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Vector3 position; |
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Vector3 normal; |
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} VerticesSolid[]{ |
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{{-1.0f, -1.0f, 1.0f}, { 0.0f, 0.0f, 1.0f}}, |
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{{ 1.0f, -1.0f, 1.0f}, { 0.0f, 0.0f, 1.0f}}, |
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{{ 1.0f, 1.0f, 1.0f}, { 0.0f, 0.0f, 1.0f}}, /* +Z */ |
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{{-1.0f, 1.0f, 1.0f}, { 0.0f, 0.0f, 1.0f}}, |
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{{ 1.0f, -1.0f, 1.0f}, { 1.0f, 0.0f, 0.0f}}, |
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{{ 1.0f, -1.0f, -1.0f}, { 1.0f, 0.0f, 0.0f}}, |
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{{ 1.0f, 1.0f, -1.0f}, { 1.0f, 0.0f, 0.0f}}, /* +X */ |
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{{ 1.0f, 1.0f, 1.0f}, { 1.0f, 0.0f, 0.0f}}, |
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{{-1.0f, 1.0f, 1.0f}, { 0.0f, 1.0f, 0.0f}}, |
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{{ 1.0f, 1.0f, 1.0f}, { 0.0f, 1.0f, 0.0f}}, |
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{{ 1.0f, 1.0f, -1.0f}, { 0.0f, 1.0f, 0.0f}}, /* +Y */ |
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{{-1.0f, 1.0f, -1.0f}, { 0.0f, 1.0f, 0.0f}}, |
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{{ 1.0f, -1.0f, -1.0f}, { 0.0f, 0.0f, -1.0f}}, |
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{{-1.0f, -1.0f, -1.0f}, { 0.0f, 0.0f, -1.0f}}, |
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{{-1.0f, 1.0f, -1.0f}, { 0.0f, 0.0f, -1.0f}}, /* -Z */ |
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{{ 1.0f, 1.0f, -1.0f}, { 0.0f, 0.0f, -1.0f}}, |
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{{-1.0f, -1.0f, -1.0f}, { 0.0f, -1.0f, 0.0f}}, |
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{{ 1.0f, -1.0f, -1.0f}, { 0.0f, -1.0f, 0.0f}}, |
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{{ 1.0f, -1.0f, 1.0f}, { 0.0f, -1.0f, 0.0f}}, /* -Y */ |
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{{-1.0f, -1.0f, 1.0f}, { 0.0f, -1.0f, 0.0f}}, |
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{{-1.0f, -1.0f, -1.0f}, {-1.0f, 0.0f, 0.0f}}, |
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{{-1.0f, -1.0f, 1.0f}, {-1.0f, 0.0f, 0.0f}}, |
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{{-1.0f, 1.0f, 1.0f}, {-1.0f, 0.0f, 0.0f}}, /* -X */ |
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{{-1.0f, 1.0f, -1.0f}, {-1.0f, 0.0f, 0.0f}} |
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}; |
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constexpr Trade::MeshAttributeData AttributesSolid[]{ |
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Trade::MeshAttributeData{Trade::MeshAttribute::Position, |
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Containers::stridedArrayView(VerticesSolid, &VerticesSolid[0].position, |
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Containers::arraySize(VerticesSolid), sizeof(VertexSolid))}, |
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Trade::MeshAttributeData{Trade::MeshAttribute::Normal, |
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Containers::stridedArrayView(VerticesSolid, &VerticesSolid[0].normal, |
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Containers::arraySize(VerticesSolid), sizeof(VertexSolid))} |
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}; |
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} |
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Trade::MeshData cubeSolid() { |
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return Trade::MeshData{MeshPrimitive::Triangles, |
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Trade::DataFlag::Global, IndicesSolid, Trade::MeshIndexData{IndicesSolid}, |
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Trade::DataFlag::Global, VerticesSolid, Trade::meshAttributeDataNonOwningArray(AttributesSolid)}; |
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} |
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namespace { |
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/* Can't be just an array of Vector3 because MSVC 2015 is special. See |
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Crosshair.cpp for details. */ |
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constexpr struct VertexSolidStrip { |
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Vector3 position; |
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} VerticesSolidStrip[]{ |
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/* Sources: |
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https://twitter.com/Donzanoid/status/436843034966507520 |
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http://www.asmcommunity.net/forums/topic/?id=6284#post-45209 |
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https://gist.github.com/cdwfs/2cab675b333632d940cf |
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0---2---3---1 |
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|E /|\ A|H /| |
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| / | \ | / | |
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|/ D|B \|/ I| |
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4---7---6---5 |
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|C /| |
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| / | |
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|/ J| |
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4---5 |
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|\ K| |
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| \ | |
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|L \| |
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0---1 |
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|\ G| |
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| \ | |
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|F \| |
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2---3 |
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*/ |
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{{ 1.0f, 1.0f, 1.0f}}, /* 3 */ |
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{{-1.0f, 1.0f, 1.0f}}, /* 2 */ |
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{{ 1.0f, -1.0f, 1.0f}}, /* 6 */ |
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{{-1.0f, -1.0f, 1.0f}}, /* 7 */ |
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{{-1.0f, -1.0f, -1.0f}}, /* 4 */ |
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{{-1.0f, 1.0f, 1.0f}}, /* 2 */ |
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{{-1.0f, 1.0f, -1.0f}}, /* 0 */ |
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{{ 1.0f, 1.0f, 1.0f}}, /* 3 */ |
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{{ 1.0f, 1.0f, -1.0f}}, /* 1 */ |
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{{ 1.0f, -1.0f, 1.0f}}, /* 6 */ |
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{{ 1.0f, -1.0f, -1.0f}}, /* 5 */ |
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{{-1.0f, -1.0f, -1.0f}}, /* 4 */ |
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{{ 1.0f, 1.0f, -1.0f}}, /* 1 */ |
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{{-1.0f, 1.0f, -1.0f}} /* 0 */ |
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}; |
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constexpr Trade::MeshAttributeData AttributesSolidStrip[]{ |
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Trade::MeshAttributeData{Trade::MeshAttribute::Position, |
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Containers::stridedArrayView(VerticesSolidStrip, &VerticesSolidStrip[0].position, |
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Containers::arraySize(VerticesSolidStrip), sizeof(VertexSolidStrip))} |
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}; |
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} |
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Trade::MeshData cubeSolidStrip() { |
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return Trade::MeshData{MeshPrimitive::TriangleStrip, |
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Trade::DataFlag::Global, VerticesSolidStrip, Trade::meshAttributeDataNonOwningArray(AttributesSolidStrip)}; |
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} |
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namespace { |
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/* not 8-bit because GPUs (and Vulkan) don't like it nowadays */ |
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constexpr UnsignedShort IndicesWireframe[]{ |
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0, 1, 1, 2, 2, 3, 3, 0, /* +Z */ |
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4, 5, 5, 6, 6, 7, 7, 4, /* -Z */ |
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1, 5, 2, 6, /* +X */ |
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0, 4, 3, 7 /* -X */ |
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}; |
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/* Can't be just an array of Vector3 because MSVC 2015 is special. See |
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Crosshair.cpp for details. */ |
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constexpr struct VertexWireframe { |
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Vector3 position; |
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} VerticesWireframe[]{ |
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{{-1.0f, -1.0f, 1.0f}}, |
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{{ 1.0f, -1.0f, 1.0f}}, |
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{{ 1.0f, 1.0f, 1.0f}}, |
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{{-1.0f, 1.0f, 1.0f}}, |
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{{-1.0f, -1.0f, -1.0f}}, |
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{{ 1.0f, -1.0f, -1.0f}}, |
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{{ 1.0f, 1.0f, -1.0f}}, |
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{{-1.0f, 1.0f, -1.0f}} |
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}; |
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constexpr Trade::MeshAttributeData AttributesWireframe[]{ |
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Trade::MeshAttributeData{Trade::MeshAttribute::Position, |
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Containers::stridedArrayView(VerticesWireframe, &VerticesWireframe[0].position, |
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Containers::arraySize(VerticesWireframe), sizeof(VertexWireframe))} |
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}; |
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} |
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Trade::MeshData cubeWireframe() { |
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return Trade::MeshData{MeshPrimitive::Lines, |
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Trade::DataFlag::Global, IndicesWireframe, Trade::MeshIndexData{IndicesWireframe}, |
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Trade::DataFlag::Global, VerticesWireframe, Trade::meshAttributeDataNonOwningArray(AttributesWireframe)}; |
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} |
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}}
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