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Editorial Team
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Asked: 2026-05-23T16:21:23+00:00

I want something like this: (light part, ignore background) How can I draw this

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I want something like this: (light part, ignore background)

example triangle

How can I draw this using Cocoa? In drawRect:? I don’t know how to draw.

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1 Answer

  1. Editorial Team

    Use NSBezierPath:

    - (void)drawRect:(NSRect)rect
{
    NSBezierPath *path = [NSBezierPath bezierPath];
    [path moveToPoint:NSMakePoint(0, 0)];
    [path lineToPoint:NSMakePoint(50, 100)];
    [path lineToPoint:NSMakePoint(100, 0)];
    [path closePath];
    [[NSColor redColor] set];
    [path fill];
}

    This should get you started, it draws a red triangle on a 100×100 sized view. You’d usually calculate the coordinates dynamically, based on the view’s size, instead of using hard-coded values of course.

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