objective c - iOS, How to draw a rough line, for fun apps? -


i'm trying draw rough line, normal straight line looks odd in app. i'm using fun font etc , straight line doesn't work.

when rough, mean want add noise or texture it.

i've tried adding image texture options i've tried use uniform tiled approach looks georometricly sound.

i need either add scatter effect draw texture image in shape of line or sort of random approach add noise.

i know draw rough line in imaging app , use that, i'm not sure colouring , size @ stage , i'd rather use dynamic.

i've spend far long on issue , lot if time googling , can't find can use, if have solution please provide or point me @ example code.

thanks.

this best solution i've found, it's uniform...

#import "drawtexturedline.h" @implementation drawtexturedline  - (void)drawrect:(cgrect)rect {         cgcontextref context = uigraphicsgetcurrentcontext();     [self patternmake2:rect context:context]; }  void pattern2callback (void *info, cgcontextref context) {     uiimage *image = [uiimage imagenamed:@"particle.png"];     cgimageref imageref = [image cgimage];     cgcontextdrawimage(context, cgrectmake(0, 0, 50, 25), imageref); }  - (void)patternmake2:(cgrect)rect context:(cgcontextref)context {     static const cgpatterncallbacks callbacks = { 0, &pattern2callback, null };      cgcolorspaceref patternspace = cgcolorspacecreatepattern(null);     cgcontextsetfillcolorspace(context, patternspace);     cgcolorspacerelease(patternspace);     cgsize patternsize = cgsizemake(25/2.0, 25);     cgpatternref pattern = cgpatterncreate(null, self.bounds,          cgaffinetransformidentity, patternsize.width, patternsize.height,          kcgpathfillstroke, true, &callbacks);     cgfloat alpha = 1;     cgcontextsetfillpattern(context, pattern, &alpha);      cgpatternrelease(pattern);     cgcontextfillrect(context, rect);     //cgcontextrestoregstate(context);      } @end

not quite answering question draw lines in paint package , include app , use code set colour of lines.

https://coffeeshopped.com/2010/09/iphone-how-to-dynamically-color-a-uiimage

if use sprite kit becomes easier change colors of images

[skaction colorizewithcolor:[self randomcolor]                              colorblendfactor:1.0                                      duration:0]];

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