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92 lines
4.3 KiB
92 lines
4.3 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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2020 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 "ForceRenderer.h" |
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#include "Magnum/GL/Mesh.h" |
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#include "Magnum/DebugTools/ResourceManager.h" |
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#include "Magnum/SceneGraph/Camera.h" |
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#include "Magnum/Shaders/Flat.h" |
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#include "Magnum/DebugTools/Implementation/ForceRendererTransformation.h" |
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namespace Magnum { namespace DebugTools { |
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namespace { |
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template<UnsignedInt dimensions> ResourceKey shaderKey(); |
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template<> inline ResourceKey shaderKey<2>() { return ResourceKey("FlatShader2D"); } |
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template<> inline ResourceKey shaderKey<3>() { return ResourceKey("FlatShader3D"); } |
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constexpr Vector2 positions[]{ |
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{0.0f, 0.0f}, |
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{1.0f, 0.0f}, |
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{0.9f, 0.1f}, |
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{0.9f, -0.1f} |
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}; |
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constexpr UnsignedByte indices[]{ |
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0, 1, |
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1, 2, |
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1, 3 |
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}; |
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} |
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template<UnsignedInt dimensions> ForceRenderer<dimensions>::ForceRenderer(ResourceManager& manager, SceneGraph::AbstractObject<dimensions, Float>& object, const VectorTypeFor<dimensions, Float>& forcePosition, const VectorTypeFor<dimensions, Float>& force, ResourceKey options, SceneGraph::DrawableGroup<dimensions, Float>* drawables): SceneGraph::Drawable<dimensions, Float>(object, drawables), _forcePosition(forcePosition), _force(force), _options(manager.get<ForceRendererOptions>(options)) { |
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/* Shader */ |
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_shader = manager.get<GL::AbstractShaderProgram, Shaders::Flat<dimensions>>(shaderKey<dimensions>()); |
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if(!_shader) manager.set<GL::AbstractShaderProgram>(_shader.key(), new Shaders::Flat<dimensions>); |
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/* Mesh and vertex buffer */ |
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_mesh = manager.get<GL::Mesh>("force"); |
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if(_mesh) return; |
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/* Create the mesh */ |
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GL::Buffer vertexBuffer{GL::Buffer::TargetHint::Array}; |
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vertexBuffer.setData(positions, GL::BufferUsage::StaticDraw); |
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GL::Buffer indexBuffer{GL::Buffer::TargetHint::ElementArray}; |
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indexBuffer.setData(indices, GL::BufferUsage::StaticDraw); |
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GL::Mesh mesh{GL::MeshPrimitive::Lines}; |
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mesh.setCount(Containers::arraySize(indices)) |
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.addVertexBuffer(std::move(vertexBuffer), 0, |
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typename Shaders::Flat<dimensions>::Position(Shaders::Flat<dimensions>::Position::Components::Two)) |
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.setIndexBuffer(std::move(indexBuffer), 0, GL::MeshIndexType::UnsignedByte, 0, Containers::arraySize(positions)); |
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manager.set(_mesh.key(), std::move(mesh), ResourceDataState::Final, ResourcePolicy::Manual); |
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} |
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/* To avoid deleting pointers to incomplete type on destruction of Resource members */ |
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template<UnsignedInt dimensions> ForceRenderer<dimensions>::~ForceRenderer() = default; |
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template<UnsignedInt dimensions> void ForceRenderer<dimensions>::draw(const MatrixTypeFor<dimensions, Float>& transformationMatrix, SceneGraph::Camera<dimensions, Float>& camera) { |
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_shader->setTransformationProjectionMatrix(camera.projectionMatrix()*Implementation::forceRendererTransformation<dimensions>(transformationMatrix.transformPoint(_forcePosition), _force)*MatrixTypeFor<dimensions, Float>::scaling(VectorTypeFor<dimensions, Float>{_options->size()})) |
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.setColor(_options->color()) |
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.draw(*_mesh); |
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} |
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template class MAGNUM_DEBUGTOOLS_EXPORT ForceRenderer<2>; |
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template class MAGNUM_DEBUGTOOLS_EXPORT ForceRenderer<3>; |
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}}
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