File indexing completed on 2024-05-12 04:06:21

 /*
     SPDX-FileCopyrightText: 2010 Johannes Loehnert <loehnert.kde@gmx.de>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #ifndef PALAPELISLICERS_GOLDBERG_UTILITIES_H
 #define PALAPELISLICERS_GOLDBERG_UTILITIES_H
 
 #include <cmath>
 #include <QImage>
 
 inline qreal dotproduct(const QPointF& a, const QPointF& b) { return a.x() * b.x() + a.y() * b.y(); }
 
 inline qreal dsin(qreal angle) { return sin(angle* M_PI / 180.0); }
 inline qreal dcos(qreal angle) { return cos(angle* M_PI / 180.0); }
 
 
 // get recommended cell count for the given aspect.
 // aspect is image_width / image_height / (cell_aspect)
 //  with cell_aspect = cell_width / cell_height (for non-square grid cell).
 // sets xCount, yCount.
 void getBestFit(int &xCount, int &yCount, qreal target_aspect, int approx_count); 
 void getBestFitExtended(int &xCount, int &yCount, qreal target_aspect, int approx_count,
             qreal tiles_per_cell, qreal additional_tiles_per_row, qreal additional_tiles_per_column, qreal additional_tiles);
 
 //A modified version of QImage::copy, which avoids rendering errors even if rect is outside the bounds of the source image.
 QImage safeQImageCopy(const QImage& source, const QRect& rect);
 
 // skews x with "strength" a.
 // x is expected to lie within [0, 1].
 // a = +/-1 is already a very strong skew.
 // negative a: skew towards x=0, positive: skew towards x=1.
 qreal skew_randnum(qreal x, qreal a);
 
 qreal nonuniform_rand(qreal min, qreal max, qreal sigma, qreal skew);
 
 
 #endif // PALAPELISLICERS_GOLDBERG_UTILITIES_H