Created
October 13, 2016 03:31
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Plain CoreGraphics calls in Swift
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| guard let ctxt = UIGraphicsGetCurrentContext() else { | |
| print("BAILING OUT WITHOUT A GRAPHICS CONTEXT !!") | |
| return | |
| } | |
| ctxt.setStrokeColor(gray:0, alpha:kKnobOpacity) | |
| ctxt.setLineWidth(knobThickness) | |
| ctxt.addEllipse(in:rect) | |
| ctxt.strokePath() | |
| ctxt.saveGState() | |
| ctxt.setBlendMode(.copy) | |
| ctxt.setStrokeColor(gray:0, alpha:0) | |
| ctxt.setFillColor(gray:0, alpha:0) | |
| fillCurvedDoubleArrow(ctxt:ctxt, center:boundsCenter, radius:innerRadius, thickness:knobThickness*0.2, angle:270, aperture:25) | |
| ctxt.restoreGState() |
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