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2014/10/15 ¤U¤È 10:05:00

iphone Programming Glossary: cgcontextaddellipseinrect

iPhone: why isn't drawRect getting called?

http://stackoverflow.com/questions/1053761/iphone-why-isnt-drawrect-getting-called

context currentColor.CGColor CGContextSetFillColorWithColor context currentColor.CGColor CGContextAddEllipseInRect context currentRect CGContextDrawPath context kCGPathFillStroke self.view setNeedsDisplay The designated initializer. Override..

Drawing incrementally in a UIView (iPhone)

http://stackoverflow.com/questions/1798414/drawing-incrementally-in-a-uiview-iphone

respect alpha mask CGContextSetBlendMode context kCGBlendModeColorBurn set blending mode for Drop drop in myPoints CGContextAddEllipseInRect context CGRectMake drop.point.x drop.size 2 drop.point.y drop.size 2 drop.size drop.size CGContextSetRGBFillColor context.. 0 Drop drop myPoints objectAtIndex myPoints count 1 CGContextClipToMask ctx self.bounds maskRef respect alpha mask CGContextAddEllipseInRect ctx CGRectMake drop.point.x drop.dropSize 2 drop.point.y drop.dropSize 2 drop.dropSize drop.dropSize CGContextSetRGBFillColor..

How to fill a path with gradient in drawRect:?

http://stackoverflow.com/questions/2985359/how-to-fill-a-path-with-gradient-in-drawrect

baseSpace baseSpace NULL CGContextRef context UIGraphicsGetCurrentContext CGContextSaveGState context CGContextAddEllipseInRect context rect CGContextClip context CGPoint startPoint CGPointMake CGRectGetMidX rect CGRectGetMinY rect CGPoint endPoint..

How to know the current position of circle while it is rotating on custom route path?

http://stackoverflow.com/questions/8192018/how-to-know-the-current-position-of-circle-while-it-is-rotating-on-custom-route

context UIColor whiteColor .CGColor Draw a circle and paint it with a different outline white and fill color green CGContextAddEllipseInRect context CGRectMake 1 1 18 18 CGContextDrawPath context kCGPathFillStroke UIImage circle UIGraphicsGetImageFromCurrentImageContext..

Core Animation or OpenGL ES?

http://stackoverflow.com/questions/845662/core-animation-or-opengl-es

of drawRect you'll get the stored last touch point and draw three circles around it using three calls to CGContextAddEllipseInRect as discussed here Quartz 2D Programming Guide Paths registration as Apple Developer required . share improve this answer..