rect_float.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef BLADERUNNER_RECT_FLOAT_H
#define BLADERUNNER_RECT_FLOAT_H

#include "common/debug.h"
#include "common/types.h"
#include "common/util.h"
#include "math/utils.h"

namespace BladeRunner {

struct RectFloat {
    float x0;
    float y0;
    float x1;
    float y1;

    RectFloat()
        : x0(0.0f), y0(0.0f), x1(0.0f), y1(0.0f)
    {}
    RectFloat(float x0_, float y0_, float x1_, float y1_)
        : x0(x0_), y0(y0_), x1(x1_), y1(y1_)
    {}

    void expand(float d) {
        x0 -= d;
        y0 -= d;
        x1 += d;
        y1 += d;
    }

    void trunc_2_decimals() {
        x0 = Math::trunc(x0 * 100.0f) / 100.0f;
        y0 = Math::trunc(y0 * 100.0f) / 100.0f;
        x1 = Math::trunc(x1 * 100.0f) / 100.0f;
        y1 = Math::trunc(y1 * 100.0f) / 100.0f;
    }
};

inline bool overlaps(const RectFloat &a, const RectFloat &b) {
    return !(a.y1 < b.y0 || a.y0 > b.y1 || a.x0 > b.x1 || a.x1 < b.x0);
}

inline RectFloat merge(const RectFloat &a, const RectFloat &b) {
    RectFloat c;
    c.x0 = MIN(a.x0, b.x0);
    c.y0 = MIN(a.y0, b.y0);
    c.x1 = MAX(a.x1, b.x1);
    c.y1 = MAX(a.y1, b.y1);
    return c;
}

} // End of namespace BladeRunner

#endif