bbox.hpp

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/*

PICCANTE
The hottest HDR imaging library!
http://vcg.isti.cnr.it/piccante

Copyright (C) 2014
Visual Computing Laboratory - ISTI CNR
http://vcg.isti.cnr.it
First author: Francesco Banterle

This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.

*/

#ifndef PIC_UTIL_BBOX_HPP
#define PIC_UTIL_BBOX_HPP

#include "../base.hpp"
#include "../util/string.hpp"

namespace pic {

class BBox
{
public:
    int x0, y0, z0, x1, y1, z1;
    int width, height, frames;

    BBox()
    {

    }

    BBox(int width, int height)
    {
        setBox(0, width, 0, height, 0, 1, width, height, 1);
    }

    BBox(int width, int height, int frames)
    {
        setBox(0, width, 0, height, 0, frames, width, height, frames);
    }

    BBox(int x0, int x1, int y0, int y1)
    {
        setBox(x0, x1, y0, y1, 0, 1, -1, -1, 1);
    }

    BBox(int x0, int x1, int y0, int y1, int width, int height)
    {
        setBox(x0, x1, y0, y1, 0, 1, width, height, 1);
    }

    BBox(int x0, int y0, int size, int width, int height)
    {
        setCentered(x0, y0, size, width, height);
    }

    int Size()
    {
        return (y1 - y0) * (x1 - x0) * (z1 - z0);
    }

    void setBox(int x0, int x1, int y0, int y1, int z0, int z1, int width,
                int height, int frames)
    {
        this->x0 = x0;
        this->y0 = y0;
        this->z0 = z0;

        this->x1 = x1;
        this->y1 = y1;
        this->z1 = z1;

        this->width = width;
        this->height = height;
        this->frames = frames;
    }

    void setCentered(int x0, int y0, int size, int width, int height)
    {
        this->z0 = 0;
        this->z1 = 1;

        int halfSize = size >> 1;

        this->x0 = x0 - halfSize;
        this->x1 = x0 + halfSize;

        this->y0 = y0 - halfSize;
        this->y1 = y0 + halfSize;

        this->width = width;
        this->height = height;
        this->frames = 1;
    }

    void getFourBlocks(int width, int height, int i)
    {
        int halfWidth  = width >> 1;
        int halfHeight = height >> 1;

        int dataX[] = {0, 0, halfWidth, halfWidth};
        int dataY[] = {0, halfHeight, 0, halfHeight};

        if((width % 2) == 1) {
            halfWidth++;
        }

        if((height % 2) == 1) {
            halfHeight++;
        }

        setBox(dataX[i], dataX[i] + halfWidth,
               dataY[i], dataY[i] + halfHeight,
               0, 1,
               width, height, 1);
        //  print();
    }

    std::string toString()
    {
        return "X = (" + fromNumberToString(x0) + ", " + fromNumberToString(x1) + ") " +
               "Y = (" + fromNumberToString(y0) + ", " + fromNumberToString(y1) + ") " +
               "Z = (" + fromNumberToString(z0) + ", " + fromNumberToString(z1) + ")";
    }
};

} // end namespace pic

#endif /* PIC_UTIL_BBOX_HPP */