cgpath

I am trying to create a perfect right half circle of 15 points radius with CGPathAddCurveToPoint, like this: CGPathMoveToPoint(path, NULL, 0, 0); CGPathAddCurveToPoint(path, NULL, 15, 0, 15, 30, 0, 30); It starts at the top middle of the circle. Then the first control point is set to the top right corner of the circle's bounding box. The second control point is set to the bottom right corner of the circle's bounding box. The circle ends at bottom middle of the bounding box. But when drawn, the circle has an egg-like shape. How can I make a perfect, flawless right semisphere starting at point 0

I'm using this code to stroke a NSBezierPath with a wide, dashed, black line. ( c and strForBezier are defined somewhere else) NSGlyph glyph; for(n = 0; n < len; n++) { glyph = [font glyphWithName: [strForBezier substringWithRange:NSMakeRange(n, 1)]]; [path appendBezierPathWithGlyph: glyph inFont: font]; } CGFloat pattern2[4]; pattern2[0]=5*c; pattern2[1]=2*c; pattern2[2]=2*c; pattern2[3]=2*c; [path setLineDash:pattern2 count:4 phase:0]; [path setLineWidth:c]; [path stroke]; [[NSColor blueColor] set ]; [path fill]; How can I get the black NSBezierPath ? I'm making the assumption that a

I need to color a shape on my screen any color I wish. I am currently trying to do this with a UIImage which I want to recolor to my desires. The only way to do this, as far as I know, is to take the individual pixels of the UIImage, which calls for many more lines of code that I would like to write to fix this problem. Is there any way to change the UIImage color other than what I have written? Would it be easier to draw the shape in context and fill it? TY. Update: The Hexagon is drawing itself the right way, but it doesn't fill right at all. Here is the code: self.Hexagon.lineWidth=10;

I need to create mask based on image (any possible shape). I need to: Create CALayer with CGPath as a proper mask Call [UIView.layer setMask: with layer above ] So main big question is how to set CGPath based on black-white image? Or is it possible to place mask directly from image? Thanks! Example image of a mask: You will need to create your image with an alpha channel. According to CALayer 's mask property documentation: An optional layer whose alpha channel is used as a mask to select between the layer's background and the result of compositing the layer's contents with its filtered

I have a UIView subclass on which the user can add a random CGPath. The CGPath is added by processing UIPanGestures. I would like to resize the UIView to the minimal rect possible that contains the CGPath. In my UIView subclass, I have overridden sizeThatFits to return the minimal size as such: - (CGSize) sizeThatFits:(CGSize)size { CGRect box = CGPathGetBoundingBox(sigPath); return box.size; } This works as expected and the UIView is resized to the value returned, but the CGPath is also "resized" proportionally resulting in a different path that what the user had originally drawn. As an

I have got 9 hexagon sprites across the screen and I have to specify a certain path around them to make their area touchable. I don't want to set the coordinates for every single path respectively, so can't I just use the first path (the hexagons are all the same size) and move its origin to another position (without destroying the shape)? (If i do it now, the CGPathAddLineToPoint(); adds the points of the hexagon from the previous hexagon. I hope I got the idea across ... (see picture... NOTE : The grey octagon on the upper right is the exact same size and shape as the black one)![Move path