mirror of https://github.com/mosra/magnum.git
Vladimír Vondruš
8 years ago
11 changed files with 602 additions and 300 deletions
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/*
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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 "Magnum/Timeline.h" |
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#include "Magnum/GL/Buffer.h" |
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#include "Magnum/GL/Mesh.h" |
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#include "Magnum/GL/DefaultFramebuffer.h" |
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#include "Magnum/GL/Renderer.h" |
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#include "Magnum/Math/Color.h" |
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#include "Magnum/MeshTools/Compile.h" |
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#include "Magnum/Primitives/Cube.h" |
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#include "Magnum/Platform/Sdl2Application.h" |
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#include "Magnum/SceneGraph/AnimableGroup.h" |
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#include "Magnum/SceneGraph/Camera.h" |
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#include "Magnum/SceneGraph/Drawable.h" |
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#include "Magnum/SceneGraph/MatrixTransformation2D.h" |
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#include "Magnum/SceneGraph/MatrixTransformation3D.h" |
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#include "Magnum/SceneGraph/Object.h" |
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#include "Magnum/SceneGraph/Scene.h" |
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#include "Magnum/Shaders/Flat.h" |
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#include "Magnum/Shaders/Phong.h" |
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#include "Magnum/Trade/MeshData3D.h" |
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using namespace Magnum; |
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using namespace Magnum::Math::Literals; |
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struct MyApplication: Platform::Application { |
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explicit MyApplication(const Arguments& arguments); |
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void drawEvent() override; |
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void mousePressEvent(MouseEvent& event) override; |
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SceneGraph::AnimableGroup3D animables; |
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Timeline timeline; |
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SceneGraph::Object<SceneGraph::MatrixTransformation2D>* cameraObject{}; |
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SceneGraph::Camera2D camera{*cameraObject}; |
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}; |
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/* [Animable-usage-timeline] */ |
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MyApplication::MyApplication(const Arguments& arguments): Platform::Application{arguments} { |
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// ...
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timeline.start(); |
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} |
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void MyApplication::drawEvent() { |
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animables.step(timeline.previousFrameTime(), timeline.previousFrameDuration()); |
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// ...
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timeline.nextFrame(); |
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} |
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/* [Animable-usage-timeline] */ |
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void MyApplication::mousePressEvent(MouseEvent& event) { |
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/* [Camera-projectionSize] */ |
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Vector2 position = (Vector2{event.position()}/Vector2{GL::defaultFramebuffer.viewport().size()} |
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- Vector2{0.5f})*Vector2::yScale(-1.0f)*camera.projectionSize(); |
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/* [Camera-projectionSize] */ |
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/* [Camera-projectionSize-absolute] */ |
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Vector2 absolutePosition = cameraObject->absoluteTransformation().transformPoint(position); |
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/* [Camera-projectionSize-absolute] */ |
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static_cast<void>(absolutePosition); |
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} |
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/* [Drawable-usage] */ |
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typedef SceneGraph::Object<SceneGraph::MatrixTransformation3D> Object3D; |
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typedef SceneGraph::Scene<SceneGraph::MatrixTransformation3D> Scene3D; |
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class RedCube: public Object3D, public SceneGraph::Drawable3D { |
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public: |
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explicit RedCube(Object3D* parent, SceneGraph::DrawableGroup3D* group): Object3D{parent}, SceneGraph::Drawable3D{*this, group} { |
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std::tie(_mesh, _vertices, _indices) = MeshTools::compile(Primitives::cubeSolid(), GL::BufferUsage::StaticDraw); |
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} |
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private: |
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void draw(const Matrix4& transformationMatrix, SceneGraph::Camera3D& camera) override { |
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_shader.setDiffuseColor(Color3::fromHsv(216.0_degf, 0.85f, 1.0f)) |
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.setLightPosition(camera.cameraMatrix().transformPoint({5.0f, 5.0f, 7.0f})) |
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.setTransformationMatrix(transformationMatrix) |
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.setNormalMatrix(transformationMatrix.rotation()) |
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.setProjectionMatrix(camera.projectionMatrix()); |
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_mesh.draw(_shader); |
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} |
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GL::Mesh _mesh; |
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std::unique_ptr<GL::Buffer> _vertices, _indices; |
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Shaders::Phong _shader; |
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}; |
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/* [Drawable-usage] */ |
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void draw(const Matrix4&, SceneGraph::Camera3D&); |
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void draw(const Matrix4& transformationMatrix, SceneGraph::Camera3D& camera) { |
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/* [Drawable-usage-shader] */ |
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Shaders::Flat3D shader; |
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shader.setTransformationProjectionMatrix(camera.projectionMatrix()*transformationMatrix); |
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/* [Drawable-usage-shader] */ |
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} |
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namespace A { |
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struct MyApplication: Platform::Application { |
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explicit MyApplication(const Arguments& arguments); |
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void drawEvent() override; |
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Scene3D _scene; |
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SceneGraph::Object<SceneGraph::MatrixTransformation3D>* _cameraObject; |
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SceneGraph::Camera3D* _camera; |
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SceneGraph::DrawableGroup3D _drawables; |
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}; |
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/* [Drawable-usage-camera] */ |
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MyApplication::MyApplication(const Arguments& arguments): Platform::Application{arguments} { |
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// ...
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_cameraObject = new Object3D{&_scene}; |
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_cameraObject->translate(Vector3::zAxis(5.0f)); |
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_camera = new SceneGraph::Camera3D(*_cameraObject); |
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_camera->setProjectionMatrix(Matrix4::perspectiveProjection(35.0_degf, 1.0f, 0.001f, 100.0f)); |
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} |
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void MyApplication::drawEvent() { |
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_camera->draw(_drawables); |
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// ...
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swapBuffers(); |
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} |
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/* [Drawable-usage-camera] */ |
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} |
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namespace B { |
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struct MyApplication: Platform::Application { |
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explicit MyApplication(const Arguments& arguments); |
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void drawEvent() override; |
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SceneGraph::Object<SceneGraph::MatrixTransformation2D>* _cameraObject; |
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SceneGraph::Camera3D* _camera; |
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Vector3 _lightPositionRelativeToCamera, _lightColor, _ambientColor; |
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/* [Drawable-multiple-groups] */ |
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// ...
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Shaders::Phong _shader; |
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SceneGraph::DrawableGroup3D _phongObjects, _transparentObjects; |
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}; |
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void MyApplication::drawEvent() { |
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_shader.setProjectionMatrix(_camera->projectionMatrix()) |
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.setLightPosition(_lightPositionRelativeToCamera) |
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.setLightColor(_lightColor) |
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.setAmbientColor(_ambientColor); |
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/* Each drawable sets only unique properties such as transformation matrix
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and diffuse color */ |
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_camera->draw(_phongObjects); |
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GL::Renderer::enable(GL::Renderer::Feature::Blending); |
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/* Also here */ |
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_camera->draw(_transparentObjects); |
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GL::Renderer::disable(GL::Renderer::Feature::Blending); |
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// ...
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} |
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/* [Drawable-multiple-groups] */ |
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} |
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int main() { |
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/* [Drawable-usage-instance] */ |
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Scene3D scene; |
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SceneGraph::DrawableGroup3D drawables; |
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(new RedCube(&scene, &drawables)) |
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->translate(Vector3::yAxis(-0.3f)) |
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.rotateX(30.0_degf); |
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// ...
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/* [Drawable-usage-instance] */ |
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return 0; /* on iOS SDL redefines main to SDL_main and then return is needed */ |
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} |
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@ -0,0 +1,332 @@ |
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/*
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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 "Magnum/Math/Matrix4.h" |
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#include "Magnum/SceneGraph/Animable.h" |
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#include "Magnum/SceneGraph/AnimableGroup.h" |
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#include "Magnum/SceneGraph/AbstractGroupedFeature.h" |
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#include "Magnum/SceneGraph/AbstractTranslationRotation3D.h" |
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#include "Magnum/SceneGraph/MatrixTransformation2D.h" |
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#include "Magnum/SceneGraph/MatrixTransformation3D.h" |
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#include "Magnum/SceneGraph/Camera.h" |
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#include "Magnum/SceneGraph/Drawable.h" |
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#include "Magnum/SceneGraph/Object.h" |
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#include "Magnum/SceneGraph/Scene.h" |
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using namespace Magnum; |
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using namespace Magnum::Math::Literals; |
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/* [AbstractFeature-caching] */ |
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class CachingFeature: public SceneGraph::AbstractFeature3D { |
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public: |
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explicit CachingFeature(SceneGraph::AbstractObject3D& object): SceneGraph::AbstractFeature3D{object} { |
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setCachedTransformations(SceneGraph::CachedTransformation::Absolute); |
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} |
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private: |
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void clean(const Matrix4& absoluteTransformationMatrix) override { |
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_absolutePosition = absoluteTransformationMatrix.translation(); |
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} |
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Vector3 _absolutePosition; |
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}; |
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/* [AbstractFeature-caching] */ |
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/* [AbstractFeature-object-transformation] */ |
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class TransformingFeature: public SceneGraph::AbstractFeature3D { |
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public: |
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template<class T> explicit TransformingFeature(SceneGraph::Object<T>& object): |
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SceneGraph::AbstractFeature3D{object}, _transformation{object} {} |
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private: |
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SceneGraph::AbstractTranslationRotation3D& _transformation; |
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}; |
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/* [AbstractFeature-object-transformation] */ |
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/* [AbstractGroupedFeature-subclassing] */ |
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class Drawable: public SceneGraph::AbstractGroupedFeature3D<Drawable> { |
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// ...
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}; |
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typedef SceneGraph::FeatureGroup3D<Drawable> DrawableGroup; |
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/* [AbstractGroupedFeature-subclassing] */ |
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/* [Animable-usage-definition] */ |
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typedef SceneGraph::Object<SceneGraph::MatrixTransformation3D> Object3D; |
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typedef SceneGraph::Scene<SceneGraph::MatrixTransformation3D> Scene3D; |
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class AnimableObject: public Object3D, public SceneGraph::Animable3D { |
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public: |
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AnimableObject(Object3D* parent = nullptr, SceneGraph::AnimableGroup3D* group = nullptr): Object3D{parent}, SceneGraph::Animable3D{*this, group} { |
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setDuration(10.0f); |
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// ...
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} |
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private: |
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void animationStep(Float, Float delta) override { |
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rotateX(15.0_degf*delta); // rotate at 15 degrees per second
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} |
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}; |
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/* [Animable-usage-definition] */ |
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/* [typedef] */ |
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typedef SceneGraph::Scene<SceneGraph::MatrixTransformation3D> Scene3D; |
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typedef SceneGraph::Object<SceneGraph::MatrixTransformation3D> Object3D; |
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/* [typedef] */ |
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/* [Object-typedef] */ |
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typedef SceneGraph::Scene<SceneGraph::MatrixTransformation3D> Scene3D; |
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typedef SceneGraph::Object<SceneGraph::MatrixTransformation3D> Object3D; |
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/* [Object-typedef] */ |
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/* [feature-inherit] */ |
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class BouncingBall: public Object3D, SceneGraph::Drawable3D, SceneGraph::Animable3D { |
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public: |
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explicit BouncingBall(Object3D* parent): |
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Object3D{parent}, SceneGraph::Drawable3D{*this}, SceneGraph::Animable3D{*this} {} |
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private: |
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// drawing implementation for Drawable feature
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void draw(const Matrix4&, SceneGraph::Camera3D&) override; |
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// animation step for Animable feature
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void animationStep(Float, Float) override; |
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}; |
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/* [feature-inherit] */ |
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/* [caching] */ |
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class CachingObject: public Object3D, SceneGraph::AbstractFeature3D { |
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public: |
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explicit CachingObject(Object3D* parent): Object3D{parent}, SceneGraph::AbstractFeature3D{*this} { |
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setCachedTransformations(SceneGraph::CachedTransformation::Absolute); |
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} |
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protected: |
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void clean(const Matrix4& absoluteTransformation) override { |
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_absolutePosition = absoluteTransformation.translation(); |
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} |
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private: |
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Vector3 _absolutePosition; |
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}; |
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/* [caching] */ |
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namespace { |
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/* [transformation] */ |
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class TransformingFeature: public SceneGraph::AbstractFeature3D { |
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public: |
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template<class T> explicit TransformingFeature(SceneGraph::Object<T>& object): |
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SceneGraph::AbstractFeature3D(object), _transformation(object) {} |
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private: |
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SceneGraph::AbstractTranslationRotation3D& _transformation; |
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}; |
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/* [transformation] */ |
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} |
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int main() { |
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{ |
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/* [method-chaining] */ |
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Scene3D scene; |
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Object3D object; |
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object.setParent(&scene) |
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.rotateY(15.0_degf) |
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.translate(Vector3::xAxis(5.0f)); |
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/* [method-chaining] */ |
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} |
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{ |
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/* [hierarchy] */ |
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Scene3D scene; |
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Object3D* first = new Object3D{&scene}; |
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Object3D* second = new Object3D{first}; |
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/* [hierarchy] */ |
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static_cast<void>(second); |
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} |
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{ |
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/* [hierarchy-addChild] */ |
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Scene3D scene; |
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Object3D& first = scene.addChild<Object3D>(); |
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Object3D& second = first.addChild<Object3D>(); |
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/* [hierarchy-addChild] */ |
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static_cast<void>(second); |
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} |
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{ |
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struct MyFeature { |
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explicit MyFeature(SceneGraph::AbstractObject3D&, int, int) {} |
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}; |
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int some{}, params{}; |
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{ |
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/* [feature] */ |
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Object3D o; |
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new MyFeature{o, some, params}; |
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/* [feature] */ |
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} |
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{ |
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/* [feature-addFeature] */ |
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Object3D o; |
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o.addFeature<MyFeature>(some, params); |
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/* [feature-addFeature] */ |
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} |
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} |
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{ |
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/* [construction-order] */ |
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{ |
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Scene3D scene; |
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Object3D object(&scene); |
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} |
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/* [construction-order] */ |
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} |
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{ |
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/* [construction-order-crash] */ |
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{ |
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Object3D object; |
||||||
|
Scene3D scene; |
||||||
|
|
||||||
|
object.setParent(&scene); |
||||||
|
} // crash!
|
||||||
|
/* [construction-order-crash] */ |
||||||
|
} |
||||||
|
|
||||||
|
{ |
||||||
|
struct MyFeature { |
||||||
|
explicit MyFeature(...) {} |
||||||
|
}; |
||||||
|
{ |
||||||
|
/* [feature-construction-order] */ |
||||||
|
class MyObject: public Object3D, MyFeature { |
||||||
|
public: |
||||||
|
MyObject(Object3D* parent): Object3D(parent), MyFeature{*this} {} |
||||||
|
}; |
||||||
|
/* [feature-construction-order] */ |
||||||
|
} |
||||||
|
{ |
||||||
|
/* [feature-construction-order-crash] */ |
||||||
|
class MyObject: MyFeature, public Object3D { |
||||||
|
public: |
||||||
|
MyObject(Object3D* parent): MyFeature{*this}, Object3D(parent) {} // crash!
|
||||||
|
}; |
||||||
|
/* [feature-construction-order-crash] */ |
||||||
|
} |
||||||
|
{ |
||||||
|
#ifdef __GNUC__ |
||||||
|
#pragma GCC diagnostic push |
||||||
|
#pragma GCC diagnostic ignored "-Wreorder" |
||||||
|
#endif |
||||||
|
/* [feature-construction-order-crash-destruction] */ |
||||||
|
class MyObject: MyFeature, public Object3D { |
||||||
|
public: |
||||||
|
MyObject(Object3D* parent): Object3D(parent), MyFeature(*this) {} |
||||||
|
|
||||||
|
// crash on destruction!
|
||||||
|
}; |
||||||
|
/* [feature-construction-order-crash-destruction] */ |
||||||
|
} |
||||||
|
#ifdef __GNUC__ |
||||||
|
#pragma GCC diagnostic pop |
||||||
|
#endif |
||||||
|
} |
||||||
|
|
||||||
|
{ |
||||||
|
SceneGraph::Object<SceneGraph::MatrixTransformation3D> object; |
||||||
|
#ifdef __GNUC__ |
||||||
|
#pragma GCC diagnostic push |
||||||
|
#pragma GCC diagnostic ignored "-Wunused-variable" |
||||||
|
#endif |
||||||
|
/* [AbstractObject-features-range] */ |
||||||
|
for(SceneGraph::AbstractFeature3D& feature: object.features()) { |
||||||
|
// ...
|
||||||
|
} |
||||||
|
/* [AbstractObject-features-range] */ |
||||||
|
|
||||||
|
{ |
||||||
|
/* [Object-children-range] */ |
||||||
|
Object3D o; |
||||||
|
for(Object3D& child: o.children()) { |
||||||
|
// ...
|
||||||
|
} |
||||||
|
/* [Object-children-range] */ |
||||||
|
} |
||||||
|
#ifdef __GNUC__ |
||||||
|
#pragma GCC diagnostic pop |
||||||
|
#endif |
||||||
|
|
||||||
|
/* [AbstractObject-features] */ |
||||||
|
for(SceneGraph::AbstractFeature3D* feature = object.features().first(); feature; feature = feature->nextFeature()) { |
||||||
|
// ...
|
||||||
|
} |
||||||
|
/* [AbstractObject-features] */ |
||||||
|
|
||||||
|
{ |
||||||
|
Object3D o; |
||||||
|
/* [Object-children] */ |
||||||
|
for(Object3D* child = o.children().first(); child; child = child->nextSibling()) { |
||||||
|
// ...
|
||||||
|
} |
||||||
|
/* [Object-children] */ |
||||||
|
} |
||||||
|
|
||||||
|
{ |
||||||
|
/* [Animable-usage] */ |
||||||
|
Scene3D scene; |
||||||
|
SceneGraph::AnimableGroup3D animables; |
||||||
|
|
||||||
|
(new AnimableObject(&scene, &animables)) |
||||||
|
->setState(SceneGraph::AnimationState::Running); |
||||||
|
// ...
|
||||||
|
/* [Animable-usage] */ |
||||||
|
} |
||||||
|
|
||||||
|
{ |
||||||
|
SceneGraph::Object<SceneGraph::MatrixTransformation2D> cameraObject; |
||||||
|
/* [Camera-2D] */ |
||||||
|
SceneGraph::Camera2D camera{cameraObject}; |
||||||
|
camera.setProjectionMatrix(Matrix3::projection({4.0f/3.0f, 1.0f})) |
||||||
|
.setAspectRatioPolicy(SceneGraph::AspectRatioPolicy::Extend); |
||||||
|
/* [Camera-2D] */ |
||||||
|
} |
||||||
|
|
||||||
|
{ |
||||||
|
SceneGraph::Object<SceneGraph::MatrixTransformation3D> cameraObject; |
||||||
|
/* [Camera-3D] */ |
||||||
|
SceneGraph::Camera3D camera{cameraObject}; |
||||||
|
camera.setProjectionMatrix(Matrix4::perspectiveProjection(35.0_degf, 1.0f, 0.001f, 100.0f)) |
||||||
|
.setAspectRatioPolicy(SceneGraph::AspectRatioPolicy::Extend); |
||||||
|
/* [Camera-3D] */ |
||||||
|
} |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
} |
||||||
Loading…
Reference in new issue