Image BrushStrokerCustomBrush::drawDabImage(const TabletInputData &data, QRect *rect)
{
Q_ASSERT(data.pressure > 0);
Vec2D radiusVec;
radiusVec.rx() = radiusBase() * data.pressure;
radiusVec.ry() = radiusVec.x() * (1.0 - _setting.flattening);
_lastMinorRadius = radiusVec.y();
//qDebug() << "radius" << radiusVec.x << radiusVec.y;
QPainterPath ellipse;
ellipse.addEllipse(data.pos, radiusVec.x(), radiusVec.y());
QRect dabRect;
if (_setting.rotation)
{
QTransform rotation;
rotation.rotate(_setting.rotation);
ellipse = rotation.map(ellipse);
dabRect = ellipse.boundingRect().toAlignedRect();
}
else
{
dabRect = QRectF(QPointF(data.pos - radiusVec), QSizeF(2.0 * radiusVec)).toAlignedRect();
}
Image dabImage(dabRect.size());
dabImage.clear();
Painter dabPainter(&dabImage);
dabPainter.translateShape(-dabRect.topLeft());
if (_setting.tableWidth == 1 && _setting.tableHeight == 1)
{
// no gradient
dabPainter.setPixel(pixel());
}
else
{
ArgbGradient gradient;
gradient.addStop(0, pixel());
gradient.addStop(_setting.tableWidth, pixel() * _setting.tableHeight);
gradient.addStop(1, Pixel(0));
dabPainter.setBrush(Malachite::Brush::fromRadialGradient(gradient, data.pos, radiusVec));
}
dabPainter.drawPath(ellipse);
dabPainter.end();
*rect = dabRect;
return dabImage;
}
mulib::Vec2D mulib::Get2DBezier(const mulib::Vec2D<T>& startPos,
const mulib::Vec2D<T>& endPos,
const mulib::Vec2D<T>& ctrlPos,
const int divNum, const int nowPhase){
using namespace mulib;
if(divNum <= 0 || nowPhase > DivNum){
return Vec2D<T>(0);
}
const double u = ( 1.0 / divNum ) * nowPhase;
const Vec2D<double> psm = (1-u) * startPos + u * ctrlPos;
const Vec2D<double> pme = (1-u) * ctrlPos + u * endPos;
return Vec2D<T>(static_cast<T>((1-u) * psm.x() + u * pme.x()),
static_cast<T>((1-u) * psm.y() + u * pme.y()));
}
//改行する
void _NewLine(){
_nowPoint.Set(_startPoint.x(), _nowPoint.y() + _lineMaxSize + _lineSpace);
_lineMaxSize = _nowSize;
_strVect.push_back(StrBlock(_nowPoint,_nowColor,_nowSize)); //描画位置を強制指定
}
mulib::Angle mulib::atan2(Vec2D<double> vec){
return mulib::atan2(vec.y(),vec.x());
}
void Vec2D::rotate(const Vec2D& point, double theta)
{
set(x()-point.x(), y()-point.y());
rotate(theta);
set(x()+point.x(), y()+point.y());
}