/usr/include/tulip/GlOffscreenRenderer.h is in libtulip-dev 4.8.0dfsg-2+b7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* This file is part of Tulip (www.tulip-software.org)
*
* Authors: David Auber and the Tulip development Team
* from LaBRI, University of Bordeaux
*
* Tulip is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* Tulip is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
*/
///@cond DOXYGEN_HIDDEN
#ifndef GLOFFSCREENRENDERER_H_
#define GLOFFSCREENRENDERER_H_
#include <tulip/tulipconf.h>
#include <tulip/Coord.h>
#include <tulip/GlScene.h>
#if defined(_MSC_VER)
#include <Windows.h>
#endif
#if defined(__APPLE__)
#include <OpenGL/gl.h>
#else
#include <GL/gl.h>
#endif
#include <QImage>
class QGLFramebufferObject;
namespace tlp {
class GlSimpleEntity;
class GlGraphComposite;
/**
* @brief Render a scene in an image or in a texture.
*
* Here is an example to render a graph in a QImage to use it as preview.
* @code
* //Get the renderer
* glOffscreenRenderer *glOffscreenRenderer = GlOffscreenRenderer::getInstance();
* //Define the viewport size. Needed to initialize the offscreen rederer.
* glOffscreenRenderer->setViewPortSize(200,200);
* //Erase old elements
* glOffscreenRenderer->clearScene();
* //Change the background color of the scene to white
* glOffscreenRenderer->setSceneBackgroundColor(Color(255,255,255,255));
* //Add
* //Center and render the scene.
* glOffscreenRenderer->renderScene(true);
* //Get the result
* QImage preview = glOffscreenRenderer->getGLTexture(true);
* @endcode
**/
class TLP_QT_SCOPE GlOffscreenRenderer {
public :
/**
* @brief Get the renderer instance.
**/
static GlOffscreenRenderer *getInstance();
~GlOffscreenRenderer();
/**
* @brief Define the viewport size.
**/
void setViewPortSize(const unsigned int viewPortWidth, const unsigned int viewPortHeight);
unsigned int getViewportWidth();
unsigned int getViewportHeight();
bool frameBufferOk() const;
GlScene *getScene() {
return &scene;
}
void setZoomFactor(double zoomFactor) {
this->zoomFactor = zoomFactor;
}
void setCameraCenter(const Coord &cameraCenter) {
this->cameraCenter = cameraCenter;
}
void setSceneBackgroundColor(const Color &color);
/**
* @brief Add an entity to the scene. The scene become the owner of the object.
**/
void addGlEntityToScene(GlSimpleEntity *entity);
/**
* @brief Add a graph composite to the scene. The scene become the owner of the object.
**/
void addGraphCompositeToScene(GlGraphComposite *graphComposite);
/**
* @brief Add a graph to the scene. Just create a new GraphComposite and call GlGraphComposite.
**/
void addGraphToScene(Graph* graph);
/**
* @brief Delete all the elements of the scene and clear it.
**/
void clearScene();
/**
* @brief Render the scene in a buffer. You need to call this function before getting the result with getImage or getGlTexture.
**/
void renderScene(const bool centerScene = true, const bool antialiased = false);
void renderExternalScene(GlScene *scene, const bool antialiased = false);
/**
* @brief Generate a QImage from the scene. You need to call the renderScene function before this function.
**/
QImage getImage();
/**
* @brief Generate an open gl texture from the scene. You need to call the renderScene function before this function.
**/
GLuint getGLTexture(const bool generateMipMaps = false);
private :
GlOffscreenRenderer();
void initFrameBuffers(const bool antialiased);
static GlOffscreenRenderer *instance;
unsigned int vPWidth, vPHeight;
QGLFramebufferObject *glFrameBuf, *glFrameBuf2;
GlScene scene;
GlLayer *mainLayer;
unsigned int entitiesCpt;
double zoomFactor;
Coord cameraCenter;
bool antialiasedFbo;
};
}
#endif /* GLOFFSCREENRENDERER_H_ */
///@endcond
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