2014/10/15 下午 10:12:48

iphone Programming Glossary: pointpath

Find a point, a given distance, along a simple cubic bezier curve. (On an iPhone!)

http://stackoverflow.com/questions/4058979/find-a-point-a-given-distance-along-a-simple-cubic-bezier-curve-on-an-iphone

point CGPointMake bezierInterpolation t p1.x p2.x p3.x p4.x bezierInterpolation t p1.y p2.y p3.y p4.y UIBezierPath pointPath UIBezierPath bezierPathWithArcCenter point radius 5 startAngle 0 endAngle 2 M_PI clockwise YES pointPath stroke @end This..

Find the tangent of a point on a cubic bezier curve (on an iPhone)

http://stackoverflow.com/questions/4089443/find-the-tangent-of-a-point-on-a-cubic-bezier-curve-on-an-iphone

or altBezierInterpolation identical results for the position just draw that point to indicate it... UIBezierPath pointPath UIBezierPath bezierPathWithArcCenter point radius 5 startAngle 0 endAngle 2 M_PI clockwise YES pointPath stroke now find.. UIBezierPath pointPath UIBezierPath bezierPathWithArcCenter point radius 5 startAngle 0 endAngle 2 M_PI clockwise YES pointPath stroke now find the tangent if someone on stackoverflow knows how CGPoint vel CGPointMake bezierTangent t p1.x p2.x p3.x..

Move a UIImageView

http://stackoverflow.com/questions/862084/move-a-uiimageview

kCAAnimationPaced pathAnimation.fillMode kCAFillModeForwards pathAnimation.removedOnCompletion NO CGMutablePathRef pointPath CGPathCreateMutable CGPathMoveToPoint pointPath NULL viewOrigin.x viewOrigin.y CGPathAddLineToPoint pointPath NULL point1.x.. pathAnimation.removedOnCompletion NO CGMutablePathRef pointPath CGPathCreateMutable CGPathMoveToPoint pointPath NULL viewOrigin.x viewOrigin.y CGPathAddLineToPoint pointPath NULL point1.x point1.y CGPathAddLineToPoint pointPath NULL.. pointPath CGPathCreateMutable CGPathMoveToPoint pointPath NULL viewOrigin.x viewOrigin.y CGPathAddLineToPoint pointPath NULL point1.x point1.y CGPathAddLineToPoint pointPath NULL point2.x point2.y CGPathAddLineToPoint pointPath NULL point3.x..