quartz-2d

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Drawing Game Center like tableview cells

I\'ve now added a bounty which will be awarded to anyone who can take the three images below and produce a working implementation of a UITableView that mimicks the look and feel of the one found in Ga[详细]

2023-03-14 23:34 分类：问答
Drawing a bridge with Quartz 2D

I\'m trying to draw the following image: Using this objective-c code: CGContextSetFillColorWithColor(ctx, [[UIColor redColor] CGColor]);[详细]

2023-03-14 03:48 分类：问答
How to create a bitmap context for an alpha mask image?

I want to draw an alpha mask image in code. Right now I do: 1) Create a bitmap context using CGBitmapContextCreate with options CGColorSpaceCreateDeviceRGB and kCGImageAlphaPremultipliedFirst.[详细]

2023-03-13 20:00 分类：问答
Expected identifier before "{" token + confused by earlier errors, bailing out

I am learning game programming on Objective-C and typing code as I follow along this book. I\'ve been able to clean up all mistakes/errors thus far, but this one just escapes me.[详细]

2023-03-13 19:38 分类：问答
CGContextStrokePath() causing "dots" in realtime drawing (finger painting) app

I\'m trying to write a finger painting type app.I am starting a path in touchesBegan and adding to that path in touchesMoved.In touchesMoved, I use the following code:[详细]

2023-03-10 04:04 分类：问答
Quartz 2d trying to redraw a triangle

I\'m developi开发者_开发百科ng an iPhone app. I have the following class: #import \"Triangulo.h\"[详细]

2023-03-09 02:15 分类：问答
How to implement alpha gradient on a image?

I want to implement alpha gradient on an image. From 0.5 alfa on top of the image to 0.0 on bottom. Any a开发者_JS百科dvice, tutorial, link is welcome.You can use CGImageCreateWithMask to apply a mask[详细]

2023-03-03 15:04 分类：问答
How do I get UIImage from a CGContextRef?

I have a CGContextRef and I did my drawing stuff with the bitmap context. Now, I would like to have a function c开发者_C百科all to get a UIImage for the CGContextRef. How do I do that?Something like t[详细]

2023-03-02 23:37 分类：问答
Find the number of components in the current fill & stroke color space form CGContext?

I am looking at way of finding the color space of a CGContext? CGBitmapContextGetColorSpace() will 开发者_JAVA技巧not work as I am working with general context and not bitmap context.[详细]

2023-03-01 03:02 分类：问答
CGContextDrawPath Stroke disappears if Fill is added

trying to draw circle divided to dynamically provided number of sectors. In the end my circle should look like pie.[详细]

2023-02-28 09:27 分类：问答