File indexing completed on 2024-05-12 15:58:39

 /*
  *  SPDX-FileCopyrightText: 2004, 2007-2010 Cyrille Berger <cberger@cberger.net>
  *  SPDX-FileCopyrightText: 2018 Ivan Santa Maria <ghevan@gmail.com>
  *  SPDX-FileCopyrightText: 2022 L. E. Segovia <amy@amyspark.me>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include <cmath>
 
 
 #include <QDomDocument>
 
 #include "kis_fast_math.h"
 #include "kis_rect_mask_generator.h"
 #include "kis_rect_mask_generator_p.h"
 #include "kis_base_mask_generator.h"
 
 #include "kis_brush_mask_applicator_factories.h"
 #include "kis_brush_mask_applicator_base.h"
 
 #include <qnumeric.h>
 
 KisRectangleMaskGenerator::KisRectangleMaskGenerator(qreal radius, qreal ratio, qreal fh, qreal fv, int spikes, bool antialiasEdges)
     : KisMaskGenerator(radius, ratio, fh, fv, spikes, antialiasEdges, RECTANGLE, DefaultId), d(new Private)
 {
     setScale(1.0, 1.0);
 
     // store the variable locally to allow vector implementation read it easily
     d->copyOfAntialiasEdges = antialiasEdges;
     d->applicator.reset(createOptimizedClass<MaskApplicatorFactory<KisRectangleMaskGenerator>>(this));
 }
 
 KisRectangleMaskGenerator::KisRectangleMaskGenerator(const KisRectangleMaskGenerator &rhs)
     : KisMaskGenerator(rhs),
       d(new Private(*rhs.d))
 {
     d->applicator.reset(createOptimizedClass<MaskApplicatorFactory<KisRectangleMaskGenerator>>(this));
 }
 
 KisMaskGenerator* KisRectangleMaskGenerator::clone() const
 {
     return new KisRectangleMaskGenerator(*this);
 }
 
 KisRectangleMaskGenerator::~KisRectangleMaskGenerator()
 {
 }
 
 void KisRectangleMaskGenerator::setScale(qreal scaleX, qreal scaleY)
 {
     KisMaskGenerator::setScale(scaleX, scaleY);
 
     d->xcoeff = 2.0 / effectiveSrcWidth();
     d->ycoeff = 2.0 / effectiveSrcHeight();
     d->xfadecoeff = (horizontalFade() == 0) ? 1 : (2.0 / (horizontalFade() * effectiveSrcWidth()));
     d->yfadecoeff = (verticalFade() == 0)   ? 1 : (2.0 / (verticalFade() * effectiveSrcHeight()));
 
     setSoftness(this->softness());
 }
 
 void KisRectangleMaskGenerator::setSoftness(qreal softness)
 {
     KisMaskGenerator::setSoftness(softness);
     qreal safeSoftnessCoeff = qreal(1.0) / qMax(qreal(0.01), softness);
 
     d->transformedFadeX = d->xfadecoeff * safeSoftnessCoeff;
     d->transformedFadeY = d->yfadecoeff * safeSoftnessCoeff;
 }
 
 bool KisRectangleMaskGenerator::shouldVectorize() const
 {
     return !shouldSupersample() && spikes() == 2;
 }
 
 KisBrushMaskApplicatorBase* KisRectangleMaskGenerator::applicator()
 {
     return d->applicator.data();
 }
 
 void KisRectangleMaskGenerator::resetMaskApplicator(bool forceScalar)
 {
     d->applicator.reset(createOptimizedClass<MaskApplicatorFactory<KisRectangleMaskGenerator>>(this,forceScalar));
 }
 
 quint8 KisRectangleMaskGenerator::valueAt(qreal x, qreal y) const
 {
     if (isEmpty()) return 255;
     qreal xr = qAbs(x /*- m_xcenter*/);
     qreal yr = qAbs(y /*- m_ycenter*/);
     fixRotation(xr, yr);
 
     xr = qAbs(xr);
     yr = qAbs(yr);
 
     qreal nxr = xr * d->xcoeff;
     qreal nyr = yr * d->ycoeff;
 
     if (nxr > 1.0 || nyr > 1.0) return 255;
 
     if (antialiasEdges()) {
         xr += 1.0;
         yr += 1.0;
     }
 
     qreal fxr = xr * d->transformedFadeX;
     qreal fyr = yr * d->transformedFadeY;
 
     qreal fxnorm = nxr * (fxr - 1.0) / (fxr - nxr);
     qreal fynorm = nyr * (fyr - 1.0) / (fyr - nyr);
 
     qreal retValue = 0;
 
     if(fxr > 1.0) {
         retValue = fxnorm;
      }
 
     if (fxnorm < fynorm && fyr > 1.0) {
         retValue = fynorm;
      }
 
     return retValue * 255;
 }