mmsubs.h

/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#ifndef MM_SUBS_H
#define MM_SUBS_H
 
#include <QRgb>
 
class QImage;
class QPointF;
 
extern double angleBetweenVectors (const QPointF &v1,
                                   const QPointF &v2);
 
extern double angleFromVectorToVector (const QPointF &vFrom,
                                       const QPointF &vTo);
 
extern QRgb pixelRGB (const QImage &image, int x, int y);
 
extern QRgb pixelRGB1 (const QImage &image1Bit, int x, int y);
 
extern QRgb pixelRGB8 (const QImage &image8Bit, int x, int y);
 
extern QRgb pixelRGB32 (const QImage &image32Bit, int x, int y);
 
extern void projectPointOntoLine(double xToProject,
                                 double yToProject,
                                 double xStart,
                                 double yStart,
                                 double xStop,
                                 double yStop,
                                 double *xProjection,
                                 double *yProjection,
                                 double *projectedDistanceOutsideLine,
                                 double *distanceToLine);
 
extern void setPixelRGB (QImage &image, int x, int y, QRgb q);
 
extern void setPixelRGB1 (QImage &image1Bit, int x, int y, QRgb q);
 
extern void setPixelRGB8 (QImage &image8Bit, int x, int y, QRgb q);
 
extern void setPixelRGB32 (QImage &image32Bit, int x, int y, QRgb q);
 
#endif // MM_SUBS_H