PCVContext.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
// cloudViewer
#include <GenericCloud.h>
#include <GenericMesh.h>
 
// system
#include <vector>
 
class QGLPixelBuffer;
 
 
class PCVContext {
public:
    PCVContext();
 
    virtual ~PCVContext();
 
 
    bool init(unsigned W,
              unsigned H,
              cloudViewer::GenericCloud* cloud,
              cloudViewer::GenericMesh* mesh = 0,
              bool closedMesh = true);
 
    void setViewDirection(const CCVector3& V);
 
 
    int GLAccumPixel(std::vector<int>& visibilityCount);
 
protected:
    void glInit();
    void drawEntity();
    void associateToEntity(cloudViewer::GenericCloud* cloud,
                           cloudViewer::GenericMesh* mesh = 0);
 
    cloudViewer::GenericCloud* m_vertices;
 
    cloudViewer::GenericMesh* m_mesh;
 
    // zoom courant
    PointCoordinateType m_zoom;
    // translation vers le centre de l'entitee a afficher
    CCVector3 m_viewCenter;
 
    // associated pixel buffer
    QGLPixelBuffer* m_pixBuffer;
 
    unsigned m_width;
    unsigned m_height;
 
 
    static const unsigned OPENGL_MATRIX_SIZE = 16;
 
    float m_viewMat[OPENGL_MATRIX_SIZE];
 
    float* m_snapZ;
    unsigned char* m_snapC;
 
    bool m_meshIsClosed;
};