ios - Triangle UIView - Swift -

so i'm making game in dropping objects have destroyed spike(triangle) @ bottom of screen user.

i cannot work out how make uiview triangle. have been able make work rectangle this:

 let barrier = uiview(frame: cgrect(x:125, y: 650, width: 130, height:20))  barrier.backgroundcolor = uicolor.orangecolor()  view.addsubview(barrier) 

and has worked. cannot work out how make triangle. reason want uiview because im using collisions on , user move it. have tried png triangle detects collision border of image not start of triangle.

i have tried doesn't work...

 let square = uiview(frame: cgpathmovetopoint(path, nil, 50, 0), cgpathaddlinetopoint(path, nil, 100, 50), cgpathaddlinetopoint(path, nil, 0, 100))  square.backgroundcolor = uicolor.purplecolor()  view.addsubview(square) 

any , appreciated,

thanks,

alex

updated swift 3:

class triangleview : uiview {      override init(frame: cgrect) {         super.init(frame: frame)     }      required init?(coder adecoder: nscoder) {         super.init(coder: adecoder)     }      override func draw(_ rect: cgrect) {          guard let context = uigraphicsgetcurrentcontext() else { return }          context.beginpath()         context.move(to: cgpoint(x: rect.minx, y: rect.maxy))         context.addline(to: cgpoint(x: rect.maxx, y: rect.maxy))         context.addline(to: cgpoint(x: (rect.maxx / 2.0), y: rect.miny))         context.closepath()          context.setfillcolor(red: 1.0, green: 0.5, blue: 0.0, alpha: 0.60)         context.fillpath()     } } 

---

swift 2:

import uikit  class triangleview : uiview {      override init(frame: cgrect) {         super.init(frame: frame)     }      required init(coder adecoder: nscoder) {         super.init(coder: adecoder)     }      override func drawrect(rect: cgrect) {          var ctx : cgcontextref = uigraphicsgetcurrentcontext()          cgcontextbeginpath(ctx)         cgcontextmovetopoint(ctx, cgrectgetminx(rect), cgrectgetmaxy(rect))         cgcontextaddlinetopoint(ctx, cgrectgetmaxx(rect), cgrectgetmaxy(rect))         cgcontextaddlinetopoint(ctx, (cgrectgetmaxx(rect)/2.0), cgrectgetminy(rect))         cgcontextclosepath(ctx)          cgcontextsetrgbfillcolor(ctx, 1.0, 0.5, 0.0, 0.60);         cgcontextfillpath(ctx);        }  }  

this start minx, maxy;
draw line start maxx, maxy;
draw line maxx,maxy maxx/2, miny;
close path start location.

next part sets color want use. in example 255,127,0, alpha 0.6 fill path drew above set color.

then in view controller

swift 3:

class viewcontroller: uiviewcontroller {      override func viewdidload() {         super.viewdidload()          let triangle = triangleview(frame: cgrect(x: 10, y: 20, width: 25 , height: 30))         triangle.backgroundcolor = .white         view.addsubview(triangle)     }      override func didreceivememorywarning() {         super.didreceivememorywarning()     } } 

---

swift 2:

class viewcontroller: uiviewcontroller {      override func viewdidload() {         super.viewdidload()         // additional setup after loading view, typically nib.          let triangle = triangleview(frame: cgrectmake(10, 20, 25, 30))         triangle.backgroundcolor = .whitecolor()         view.addsubview(triangle)     }      override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     } } 

however, going cause same problem frame of view still going rectangle. uikit works rectangles, have use framework, sprite kit.