TYOpenGLRenderer.h

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/*
 * Copyright (C) <2012-2024> <EDF-DTG> <FRANCE>
 * This file is part of Code_TYMPAN (R).
 * Code_TYMPAN (R) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * Code_TYMPAN (R) 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.
 * You should have received a copy of the GNU General Public License along
 * with Code_TYMPAN (R). If not, see <https://www.gnu.org/licenses/>.
 */
 
#ifndef __TY_OPENGL_RENDERER__
#define __TY_OPENGL_RENDERER__
 
#include "Tympan/gui/gl/TYRenderContext.h"
#include "gui/gl/TYElementGraphic.h"
 
#include "Tympan/models/common/3d.h"
 
#include "Tympan/models/business/TYElement.h"
 
#include "Tympan/gui/tools/OGLLightElement.h"
#include "Tympan/gui/tools/OGLElement.h"
#include "Tympan/gui/tools/OGLCamera.h"
#include "gui/tools/OGLMeshInstance.h"
#include <qmatrix4x4.h>
 
class TYGeometryNode;
class TYOpenGLRenderer
{
public:
    enum RenderMode
    {
        Points,
        Wireframe,
        Surface,
        Flat,
        Gouraud,
        Phong,
        NbOfRenderMode
    };
 
    TYOpenGLRenderer();
 
    ~TYOpenGLRenderer();
 
    TYOpenGLRenderer(const TYOpenGLRenderer&) = delete;
    void operator=(const TYOpenGLRenderer&) = delete;
 
    void initializeGL();
 
    void init();
 
    void setRenderMode(RenderMode mode);
 
    RenderMode getRenderMode();
    void invalidateScene(void);
    void updateDisplayListOverlay(TYRenderContext& renderContext, TYGeometryNode* pElement,
                                  TYGeometryNode* pDansCeRepere);
 
    void OpenGLRender(TYRenderContext& renderContext, int x = 0, int y = 0);
 
    void drawElement(TYRenderContext& renderContext) const;
 
    void addOGLElement(OGLElement* pOGLElement);
 
    void addLight(OGLLightElement* pOGLElementLight);
    void removeLights();
    std::vector<OGLLightElement*> getLights();
 
    void setBackground(double* bgColor)
    {
        _pBackgroundColor[0] = bgColor[0];
        _pBackgroundColor[1] = bgColor[1];
        _pBackgroundColor[2] = bgColor[2];
    };
 
    void removeOGLElement(OGLElement* pOGLElement);
 
    void setRenderType(int renderType)
    {
        m_renderType = renderType;
    };
 
    void addSelectedElement(TYElement* pElement);
    void removeSelectedElement(TYElement* pElement);
    void clearTabSelectedElement();
 
protected:
    GLuint _displayList;
    GLuint _displayListOverlay;
    RenderMode _renderMode;
 
    std::vector<OGLElement*> _tabOGLElement;
 
    std::vector<TYElement*> _tabSelectedElements;
 
    std::vector<OGLLightElement*> _tabLights;
 
    OGLCamera* _pActiveCamera;
    double* _pBackgroundColor;
 
    int m_renderType; 
 
private:
    void _renderScene(TYRenderContext& renderContext) const;
 
    // Tell if the scene render cache must be rebuilt
    mutable bool _sceneRenderCacheIsDirty;
 
    void addBoundingBoxMeshInstances(std::vector<OGLMeshInstance>& meshInstances, TYElementGraphic* element);
    void collectMeshInstances(TYElementGraphic* elementGraphic, std::vector<OGLMeshInstance>& meshInstances,
                              TYRenderContext* renderContext);
 
    void drawMeshInstances(TYRenderContext& renderContext,
                           const std::vector<OGLMeshInstance>& meshInstances) const;
    QMatrix4x4 _boundingBoxScaleMatrix;
};
 
#endif // __TY_OPENGL_RENDERER__