how to draw smoothly with a flat nib pen / traped brush effect like Instagram using core graphics..?Drawing like a marker pen or brush tip in SwiftTouch draw in Quatz 2D/Core Graphicshow to compute the control points for a smooth path given a set of points?drawing hexagon using UIBezierPathUIBezierPath not drawing a smooth curveHow to generate CGPoint-Array out of UIBezierPath (to touch-slide object along given path)UIBezierPath manipulation on iOSRemoving lagging latency in drawing UIBezierPath smooth lines in Swift[iOS Objective C]Drag Bezier curve from a point on closed bezier curve pathDrawing like a marker pen or brush tip in SwiftUnable to create circle using UIBezierPath and SCNShape
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how to draw smoothly with a flat nib pen / traped brush effect like Instagram using core graphics..?
Drawing like a marker pen or brush tip in SwiftTouch draw in Quatz 2D/Core Graphicshow to compute the control points for a smooth path given a set of points?drawing hexagon using UIBezierPathUIBezierPath not drawing a smooth curveHow to generate CGPoint-Array out of UIBezierPath (to touch-slide object along given path)UIBezierPath manipulation on iOSRemoving lagging latency in drawing UIBezierPath smooth lines in Swift[iOS Objective C]Drag Bezier curve from a point on closed bezier curve pathDrawing like a marker pen or brush tip in SwiftUnable to create circle using UIBezierPath and SCNShape
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I tried some code to calculate control points between start and end point of bezier path with touch move , add lines to bezier path and fill with colour to give flat pen effect like Instagram but unable to get smooth curved lines with fast finger move.
from the below code I am able to get angled lines not smooth like instagram in image
if (_bezierPath == nil || _brushType == BrushTypeNeon)
_bezierPath = [UIBezierPath new];
[_bezierPath moveToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.startPoint.x + self.startWidth/2, self.startPoint.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.startPoint.x - self.startWidth/2, self.startPoint.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x - self.startWidth/2, self.controlPoint1.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath moveToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x - self.startWidth/2, self.controlPoint1.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x - self.startWidth/2, self.controlPoint2.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath moveToPoint:(CGPoint)self.endPoint.x + self.startWidth/2, self.endPoint.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x - self.startWidth/2, self.controlPoint2.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.endPoint.x - self.startWidth/2, self.endPoint.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.endPoint.x + self.startWidth/2, self.endPoint.y - self.startWidth/2];
_bezierPath.lineCapStyle = kCGLineCapRound;
_bezierPath.lineJoinStyle = kCGLineJoinRound;
_bezierPath.lineWidth = self.startWidth;
_bezierPath.flatness = 0.3;
[self.strokeColor set];
[_bezierPath fillWithBlendMode:kCGBlendModeNormal alpha:1.f];
I expect a smooth curved flat nib pen effect like instagram with touch move.like this
thanks for attention please mention if any suggestion or sample code :)
ios iphone drawing core-graphics uibezierpath
asked Mar 26 at 9:12
Shaktiprasad MohantyShaktiprasad Mohanty
365 bronze badges
add a comment |
I tried some code to calculate control points between start and end point of bezier path with touch move , add lines to bezier path and fill with colour to give flat pen effect like Instagram but unable to get smooth curved lines with fast finger move.
from the below code I am able to get angled lines not smooth like instagram in image
if (_bezierPath == nil || _brushType == BrushTypeNeon)
_bezierPath = [UIBezierPath new];
[_bezierPath moveToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.startPoint.x + self.startWidth/2, self.startPoint.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.startPoint.x - self.startWidth/2, self.startPoint.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x - self.startWidth/2, self.controlPoint1.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath moveToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x - self.startWidth/2, self.controlPoint1.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x - self.startWidth/2, self.controlPoint2.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath moveToPoint:(CGPoint)self.endPoint.x + self.startWidth/2, self.endPoint.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x - self.startWidth/2, self.controlPoint2.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.endPoint.x - self.startWidth/2, self.endPoint.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.endPoint.x + self.startWidth/2, self.endPoint.y - self.startWidth/2];
_bezierPath.lineCapStyle = kCGLineCapRound;
_bezierPath.lineJoinStyle = kCGLineJoinRound;
_bezierPath.lineWidth = self.startWidth;
_bezierPath.flatness = 0.3;
[self.strokeColor set];
[_bezierPath fillWithBlendMode:kCGBlendModeNormal alpha:1.f];
I expect a smooth curved flat nib pen effect like instagram with touch move.like this
thanks for attention please mention if any suggestion or sample code :)
ios iphone drawing core-graphics uibezierpath
asked Mar 26 at 9:12
Shaktiprasad MohantyShaktiprasad Mohanty
365 bronze badges
add a comment |
I tried some code to calculate control points between start and end point of bezier path with touch move , add lines to bezier path and fill with colour to give flat pen effect like Instagram but unable to get smooth curved lines with fast finger move.
from the below code I am able to get angled lines not smooth like instagram in image
if (_bezierPath == nil || _brushType == BrushTypeNeon)
_bezierPath = [UIBezierPath new];
[_bezierPath moveToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.startPoint.x + self.startWidth/2, self.startPoint.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.startPoint.x - self.startWidth/2, self.startPoint.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x - self.startWidth/2, self.controlPoint1.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath moveToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x - self.startWidth/2, self.controlPoint1.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x - self.startWidth/2, self.controlPoint2.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath moveToPoint:(CGPoint)self.endPoint.x + self.startWidth/2, self.endPoint.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x - self.startWidth/2, self.controlPoint2.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.endPoint.x - self.startWidth/2, self.endPoint.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.endPoint.x + self.startWidth/2, self.endPoint.y - self.startWidth/2];
_bezierPath.lineCapStyle = kCGLineCapRound;
_bezierPath.lineJoinStyle = kCGLineJoinRound;
_bezierPath.lineWidth = self.startWidth;
_bezierPath.flatness = 0.3;
[self.strokeColor set];
[_bezierPath fillWithBlendMode:kCGBlendModeNormal alpha:1.f];
I expect a smooth curved flat nib pen effect like instagram with touch move.like this
thanks for attention please mention if any suggestion or sample code :)
ios iphone drawing core-graphics uibezierpath
asked Mar 26 at 9:12
Shaktiprasad MohantyShaktiprasad Mohanty
365 bronze badges
I tried some code to calculate control points between start and end point of bezier path with touch move , add lines to bezier path and fill with colour to give flat pen effect like Instagram but unable to get smooth curved lines with fast finger move.
from the below code I am able to get angled lines not smooth like instagram in image
if (_bezierPath == nil || _brushType == BrushTypeNeon)
_bezierPath = [UIBezierPath new];
[_bezierPath moveToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.startPoint.x + self.startWidth/2, self.startPoint.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.startPoint.x - self.startWidth/2, self.startPoint.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x - self.startWidth/2, self.controlPoint1.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath moveToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x + self.startWidth/2, self.controlPoint1.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint1.x - self.startWidth/2, self.controlPoint1.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x - self.startWidth/2, self.controlPoint2.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath moveToPoint:(CGPoint)self.endPoint.x + self.startWidth/2, self.endPoint.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x + self.startWidth/2, self.controlPoint2.y - self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.controlPoint2.x - self.startWidth/2, self.controlPoint2.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.endPoint.x - self.startWidth/2, self.endPoint.y + self.startWidth/2];
[_bezierPath addLineToPoint:(CGPoint)self.endPoint.x + self.startWidth/2, self.endPoint.y - self.startWidth/2];
_bezierPath.lineCapStyle = kCGLineCapRound;
_bezierPath.lineJoinStyle = kCGLineJoinRound;
_bezierPath.lineWidth = self.startWidth;
_bezierPath.flatness = 0.3;
[self.strokeColor set];
[_bezierPath fillWithBlendMode:kCGBlendModeNormal alpha:1.f];
I expect a smooth curved flat nib pen effect like instagram with touch move.like this
thanks for attention please mention if any suggestion or sample code :)
ios iphone drawing core-graphics uibezierpath
ios iphone drawing core-graphics uibezierpath
asked Mar 26 at 9:12
Shaktiprasad MohantyShaktiprasad Mohanty
365 bronze badges
asked Mar 26 at 9:12
Shaktiprasad MohantyShaktiprasad Mohanty
365 bronze badges
asked Mar 26 at 9:12
Shaktiprasad MohantyShaktiprasad Mohanty
365 bronze badges
asked Mar 26 at 9:12
Shaktiprasad MohantyShaktiprasad Mohanty
365 bronze badges
asked Mar 26 at 9:12
Shaktiprasad MohantyShaktiprasad Mohanty
365 bronze badges
365 bronze badges
add a comment |
add a comment |
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