void SprayBrush::paintDistanceMap(KisPaintDeviceSP dev, const KisPaintInformation &info, const KoColor &painterColor){
KisRandomAccessor accessor = dev->createRandomAccessor(0, 0);
KoColor color = painterColor;
qreal posX = info.pos().x();
qreal posY = info.pos().y();
qreal opacity = 255;
for (int y = -m_radius; y <= m_radius; y++){
for (int x = -m_radius; x <= m_radius; x++){
//opacity = sqrt(y*y + x*x) / m_radius;
opacity = (y*y + x*x) / (m_radius * m_radius);
opacity = 1.0 - opacity;
opacity *= m_scale;
if (opacity < 0) continue;
if (opacity > 1.0) opacity = 1.0;
if ( (y*y + x*x) <= (m_radius * m_radius) )
{
color.setOpacity( opacity * 255);
accessor.moveTo(x + posX, y + posY);
memcpy( accessor.rawData(), color.data(), dev->colorSpace()->pixelSize() );
}
}
}
}
void CurveBrush::putPixel(QPointF pos, KoColor &color)
{
int ipx = int (pos.x());
int ipy = int (pos.y());
qreal fx = pos.x() - ipx;
qreal fy = pos.y() - ipy;
qreal btl = (1 - fx) * (1 - fy);
qreal btr = (fx) * (1 - fy);
qreal bbl = (1 - fx) * (fy);
qreal bbr = (fx) * (fy);
color.setOpacity(btl);
m_writeAccessor->moveTo(ipx , ipy);
if (cs->opacityU8(m_writeAccessor->rawData()) < color.opacityU8()) {
memcpy(m_writeAccessor->rawData(), color.data(), m_pixelSize);
}
color.setOpacity(btr);
m_writeAccessor->moveTo(ipx + 1, ipy);
if (cs->opacityU8(m_writeAccessor->rawData()) < color.opacityU8()) {
memcpy(m_writeAccessor->rawData(), color.data(), m_pixelSize);
}
color.setOpacity(bbl);
m_writeAccessor->moveTo(ipx, ipy + 1);
if (cs->opacityU8(m_writeAccessor->rawData()) < color.opacityU8()) {
memcpy(m_writeAccessor->rawData(), color.data(), m_pixelSize);
}
color.setOpacity(bbr);
m_writeAccessor->moveTo(ipx + 1, ipy + 1);
if (cs->opacityU8(m_writeAccessor->rawData()) < color.opacityU8()) {
memcpy(m_writeAccessor->rawData(), color.data(), m_pixelSize);
}
}
bool pick(KisPaintDeviceSP dev, const QPoint& pos, KoColor *color)
{
KIS_ASSERT(dev);
KoColor pickedColor;
dev->pixel(pos.x(), pos.y(), &pickedColor);
pickedColor.convertTo(dev->compositionSourceColorSpace());
bool validColorPicked =
pickedColor.opacityU8() != OPACITY_TRANSPARENT_U8;
if (validColorPicked) {
pickedColor.setOpacity(OPACITY_OPAQUE_U8);
*color = pickedColor;
}
return validColorPicked;
}
void HairyBrush::opacityDepletion(Bristle* bristle, KoColor& bristleColor, qreal pressure, qreal inkDeplation)
{
qreal opacity = OPACITY_OPAQUE_F;
if (m_properties->useWeights) {
opacity = qBound(0.0,
(pressure * m_properties->pressureWeight) +
(bristle->length() * m_properties->bristleLengthWeight) +
(bristle->inkAmount() * m_properties->bristleInkAmountWeight) +
((1.0 - inkDeplation) * m_properties->inkDepletionWeight),1.0);
} else {
opacity =
bristle->length() *
bristle->inkAmount();
}
bristleColor.setOpacity(opacity);
}
void SprayBrush::paintMetaballs(KisPaintDeviceSP dev, const KisPaintInformation &info, const KoColor &painterColor) {
// TODO: make adjustable?
qreal MIN_TRESHOLD = m_mintresh;
qreal MAX_TRESHOLD = m_maxtresh;
// dbgPlugins << "MAX " << MAX_TRESHOLD;
// dbgPlugins << "MIN " << MIN_TRESHOLD;
KoColor color = painterColor;
qreal posX = info.pos().x();
qreal posY = info.pos().y();
//int points = m_coverage * (m_radius * m_radius * M_PI);
qreal ballRadius = m_width * 0.5;
// generate metaballs
QList<Metaball> list;
for (int i = 0; i < m_particlesCount ; i++){
qreal x = (2 * drand48() * m_radius) - m_radius;
qreal y = (2 * drand48() * m_radius) - m_radius;
list.append(
Metaball( x,
y ,
drand48() * ballRadius)
);
}
// paint it
KisRandomAccessor accessor = dev->createRandomAccessor(0, 0);
qreal sum = 0.0;
m_computeArea.translate( -qRound(posX), -qRound(posY) );
for (int y = m_computeArea.y(); y <= m_computeArea.height(); y++){
for (int x = m_computeArea.x() ; x <= m_computeArea.width(); x++){
sum = 0.0;
for (int i = 0; i < m_particlesCount; i++){
sum += list[i].equation(x, y );
}
if (sum >= MIN_TRESHOLD && sum <= MAX_TRESHOLD){
if (sum < 0.0) sum = 0.0;
if (sum > 1.0) sum = 1.0;
color.setOpacity(OPACITY_OPAQUE * sum);
accessor.moveTo( x + posX ,y + posY );
memcpy(accessor.rawData(), color.data(), dev->colorSpace()->pixelSize() );
}
}
}
m_computeArea.translate( qRound(posX), qRound(posY) );
#if 0
KisPainter dabPainter(dev);
dabPainter.setFillColor(color);
dabPainter.setPaintColor(color);
dabPainter.setFillStyle(KisPainter::FillStyleForegroundColor);
for (int i = 0; i < m_particlesCount; i++){
qreal x = list[i].x() + posX;
qreal y = list[i].y() + posY;
dabPainter.paintEllipse(x, y, list[i].radius() * 2,list[i].radius() * 2);
}
#endif
}
