gridengine.h

/****************************************************************************
 * Copyright (c) 2014, Joel Kivelä, Erkki Koskenkorva, Oskari Leppäaho,
 * Mika Lehtinen and Petri Partanen.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the copyright holders nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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****************************************************************************/
#ifndef GRIDENGINE_H
#define GRIDENGINE_H

#include <QGLFunctions>
#include <QGLShaderProgram>
#include <QOpenGLFunctions>

namespace cavapa_gui {

class GridEngine : protected QOpenGLFunctions
{
public:

    void initialize();

    void drawGridGeometry(QGLShaderProgram *program);

private:

    void initGridGeometry();

    const int gridWidth = 80; // Width of the grid
    const int gridDepth = 80; // Depth of the grid

    int gridVerticesN; // Number of vertices in the grid
    int gridIndicesN;  // Number of indices required


    int axissize;   // size of axis cross
    int axisdistance;    // distance of axis cross from camera

    int axisVerticesN; // Number of vertices in the axis cross
    int axisIndicesN;


    int cubesize;   // same for axis cube
    int cubedistance;

    int cubeVerticesN;
    int cubeIndicesN;

    std::vector<GLfloat> vertices;
    std::vector<GLushort> indices;

    std::vector<GLfloat> axisvertices;
    std::vector<GLushort> axisindices;

    std::vector<GLfloat> cubevertices;
    std::vector<GLushort> cubeindices;


};

}

#endif // GRIDENGINE_H