114 lines
3.0 KiB
C++
114 lines
3.0 KiB
C++
#include "shapefactory.h"
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QPainterPath ShapeFactory::path( Shape shape,
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const QPointF &pos, const QSizeF &size )
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{
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QRectF rect;
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rect.setSize( size );
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rect.moveCenter( pos );
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QPainterPath path;
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switch( shape )
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{
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case Rect:
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{
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path.addRect( rect );
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break;
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}
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case Triangle:
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{
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QPolygonF triangle;
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triangle += rect.bottomLeft();
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triangle += QPointF( rect.center().x(), rect.top() );
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triangle += rect.bottomRight();
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path.addPolygon( triangle );
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break;
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}
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case Ellipse:
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{
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path.addEllipse( rect );
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break;
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}
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case Ring:
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{
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path.addEllipse( rect );
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const double w = 0.25 * rect.width();
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path.addEllipse( rect.adjusted( w, w, -w, -w ) );
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break;
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}
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case Star:
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{
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const double cos30 = 0.866025;
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const double dy = 0.25 * size.height();
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const double dx = 0.5 * size.width() * cos30 / 3.0;
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double x1 = pos.x() - 3 * dx;
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double y1 = pos.y() - 2 * dy;
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const double x2 = x1 + 1 * dx;
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const double x3 = x1 + 2 * dx;
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const double x4 = x1 + 3 * dx;
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const double x5 = x1 + 4 * dx;
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const double x6 = x1 + 5 * dx;
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const double x7 = x1 + 6 * dx;
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const double y2 = y1 + 1 * dy;
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const double y3 = y1 + 2 * dy;
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const double y4 = y1 + 3 * dy;
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const double y5 = y1 + 4 * dy;
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QPolygonF star;
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star += QPointF( x4, y1 );
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star += QPointF( x5, y2 );
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star += QPointF( x7, y2 );
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star += QPointF( x6, y3 );
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star += QPointF( x7, y4 );
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star += QPointF( x5, y4 );
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star += QPointF( x4, y5 );
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star += QPointF( x3, y4 );
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star += QPointF( x1, y4 );
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star += QPointF( x2, y3 );
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star += QPointF( x1, y2 );
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star += QPointF( x3, y2 );
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path.addPolygon( star );
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break;
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}
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case Hexagon:
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{
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const double cos30 = 0.866025;
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const double dx = 0.5 * size.width() - cos30;
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const double dy = 0.25 * size.height();
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double x1 = pos.x() - dx;
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double y1 = pos.y() - 2 * dy;
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const double x2 = x1 + 1 * dx;
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const double x3 = x1 + 2 * dx;
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const double y2 = y1 + 1 * dy;
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const double y3 = y1 + 3 * dy;
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const double y4 = y1 + 4 * dy;
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QPolygonF hexagon;
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hexagon += QPointF( x2, y1 );
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hexagon += QPointF( x3, y2 );
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hexagon += QPointF( x3, y3 );
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hexagon += QPointF( x2, y4 );
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hexagon += QPointF( x1, y3 );
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hexagon += QPointF( x1, y2 );
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path.addPolygon( hexagon );
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break;
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}
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};
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path.closeSubpath();
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return path;
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}
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