2014/10/15 下午 10:03:54

iphone Programming Glossary: arcs

Optimizing a drawing (with finger touches) application for iPhone SDK

http://stackoverflow.com/questions/1123306/optimizing-a-drawing-with-finger-touches-application-for-iphone-sdk

re start the process when two points are sampled that lie within a defined distance. This would allow you to draw two arcs like a 'm' in one motion you naturally pause in the middle as you change direction possibly long enough for two or more..

Arc / Circle animation in iphone

http://stackoverflow.com/questions/1172402/arc-circle-animation-in-iphone

Sat iphone animation share improve this question You need to read the Quartz 2D Programming Guide's section on arcs . I am assuming you are creating an app with the Cocoa Touch API not a web app. You also need to know how to set up a custom..

Are there any standard way to implement the “blue badge” in iPhone?

http://stackoverflow.com/questions/258375/are-there-any-standard-way-to-implement-the-blue-badge-in-iphone

this. However using CoreGraphics NSBezierPath is not available on iPhone you can do it pretty easily. It's just two arcs in a CGPath and some text CGContextRef context UIGraphicsGetCurrentContext float radius bounds.size.height 2.0 NSString..

How to draw a rounded rectangle in Core Graphics / Quartz 2D?

http://stackoverflow.com/questions/2835448/how-to-draw-a-rounded-rectangle-in-core-graphics-quartz-2d

rectangle in Core Graphics Quartz 2D I need to draw an outline for a rounded rectangle. I know I can make lines and arcs but maybe there is also a function for rounded rects iphone quartz graphics share improve this question UPDATE Please..

Which framework is the most suitable to create a primitive shape drawing app?

http://stackoverflow.com/questions/4067820/which-framework-is-the-most-suitable-to-create-a-primitive-shape-drawing-app

app I am creating a drawing app on iPad which allow the user to create primitive shapes like rectangles polygons arcs etc. This app enables the user to rotate and scale these shapes. So which would you prefer OpenGL ES or Quartz iphone ipad..

UIImage with transparent rounded corners

http://stackoverflow.com/questions/4885713/uiimage-with-transparent-rounded-corners

context CGRectGetMinX rect CGRectGetMinY rect Normalize the scale of the context so that the width and height of the arcs are 1.0 CGContextScaleCTM context ovalWidth ovalHeight Calculate the width and height of the rectangle in the new coordinate..

How to detect a circle motion with UIGestureRecognizer

http://stackoverflow.com/questions/5842080/how-to-detect-a-circle-motion-with-uigesturerecognizer

low pass filter using a basic FIR filter and then look at the dx and dy from point to point. A circle as a series of arcs will have to fall within a certain range of slope changes from point to point otherwise you have some other shape. Yet another..

iPhone, Map, Clickable non-rectangular areas

http://stackoverflow.com/questions/870631/iphone-map-clickable-non-rectangular-areas