point_painter.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
#include <QtCore>
#include <QtOpenGL>
 
namespace colmap {
 
class PointPainter {
public:
    PointPainter();
    ~PointPainter();
 
    struct Data {
        Data() : x(0), y(0), z(0), r(0), g(0), b(0), a(0) {}
        Data(const float x_,
             const float y_,
             const float z_,
             const float r_,
             const float g_,
             const float b_,
             const float a_)
            : x(x_), y(y_), z(z_), r(r_), g(g_), b(b_), a(a_) {}
 
        float x, y, z;
        float r, g, b, a;
    };
 
    void Setup();
    void Upload(const std::vector<PointPainter::Data>& data);
    void Render(const QMatrix4x4& pmv_matrix, const float point_size);
 
private:
    QOpenGLShaderProgram shader_program_;
    QOpenGLVertexArrayObject vao_;
    QOpenGLBuffer vbo_;
 
    size_t num_geoms_;
};
 
}  // namespace colmap