/*
frameOval : Draws an outline of an oval just inside the bounding rectangle that you specify.
Parameter Descriptions
context : The CG context to render to.
r : The CG rectangle that defines the ovalÕs boundary.
*/
void frameOval(CGContextRef context, CGRect r)
{
// Add a path for the oval to this context
addOvalToPath(context,r);
// Stroke the path
CGContextStrokePath(context);
}
void paintOval(CGContextRef context, CGRect r)
{
// Add a path for the oval to this context
addOvalToPath(context,r);
// Fill the oval
CGContextFillPath(context);
}
//-----------------------------------------------------------------------------
void CGDrawContext::drawArc (const CRect &rect, const float _startAngle, const float _endAngle, const CDrawStyle drawStyle) // in degree
{
CGContextRef context = beginCGContext (true, currentState.drawMode.integralMode ());
if (context)
{
CGPathDrawingMode m;
switch (drawStyle)
{
case kDrawFilled : m = kCGPathFill; break;
case kDrawFilledAndStroked : m = kCGPathFillStroke; break;
default : m = kCGPathStroke; break;
}
applyLineStyle (context);
CGContextBeginPath (context);
addOvalToPath (context, CPoint (rect.left + rect.width () / 2, rect.top + rect.height () / 2), rect.width () / 2, rect.height () / 2, -_startAngle, -_endAngle);
if (drawStyle == kDrawFilled || kDrawFilledAndStroked)
CGContextAddLineToPoint (context, rect.left + rect.width () / 2, rect.top + rect.height () / 2);
CGContextDrawPath (context, m);
releaseCGContext (context);
}
}