highlightable.cpp

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos 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.
 *
 * xoreos 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 xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#include "src/events/events.h"
#include "src/graphics/aurora/highlightable.h"

namespace Graphics {

namespace Aurora {

Highlightable::Highlightable() : _highlightable(false), _isHighlighted(false),
    _deltaR(0), _deltaG(0), _deltaB(0), _deltaA(0),
    _upperBoundR(0), _upperBoundG(0), _upperBoundB(0), _upperBoundA(0),
    _lowerBoundR(0), _lowerBoundG(0), _lowerBoundB(0), _lowerBoundA(0),
    _prevIncTime(EventMan.getTimestamp()) {

}

Highlightable::~Highlightable() {

}

bool Highlightable::isHighlightable() const {
    return _highlightable;
}

void Highlightable::setHighlightable(bool highlightable) {
    _highlightable = highlightable;
}

bool Highlightable::isHightlighted() const {
    return _isHighlighted;
}

void Highlightable::setHighlighted(bool hightlighted) {
    _isHighlighted = hightlighted;
}

void Highlightable::setHighlightDelta(float r, float g, float b, float a) {
    _deltaR = r;
    _deltaG = g;
    _deltaB = b;
    _deltaA = a;
}

void Highlightable::setHighlightLowerBound(float r, float g, float b, float a) {
    _lowerBoundR = r;
    _lowerBoundG = g;
    _lowerBoundB = b;
    _lowerBoundA = a;
}

void Highlightable::setHighlightUpperBound(float r, float g, float b, float a) {
    _upperBoundR = r;
    _upperBoundG = g;
    _upperBoundB = b;
    _upperBoundA = a;
}

void Highlightable::getHighlightedLowerBound(float &r, float &g, float &b, float &a) const {
    r = _lowerBoundR;
    g = _lowerBoundG;
    b = _lowerBoundB;
    a = _lowerBoundA;
}

void Highlightable::flipHighlightDelta() {
    _deltaR *= -1;
    _deltaG *= -1;
    _deltaB *= -1;
    _deltaA *= -1;
}

void Highlightable::incrementColor(float initialR, float initialG, float initialB, float initialA,
                                   float &r, float &g, float &b, float &a) {
    uint32 time = EventMan.getTimestamp();
    float dt = (time - _prevIncTime) / 50.f;

    r = initialR + _deltaR * dt;
    g = initialG + _deltaG * dt;
    b = initialB + _deltaB * dt;
    a = initialA + _deltaA * dt;

    if (_upperBoundR < r || _upperBoundG < g || _upperBoundB < b || _upperBoundA < a ||
          _lowerBoundR > r || _lowerBoundG > g || _lowerBoundB > b || _lowerBoundA > a) {
        flipHighlightDelta();

        r = initialR;
        g = initialG;
        b = initialB;
        a = initialA;
    }

    _prevIncTime = time;
}

} // End of namespace Aurora

} // End of namespace Graphics