core-graphics

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CoreGraphics - Special characters not drawn correctly

I am drawing an image using CoreGraphics and can\'t get the €-sign displaying correctly.. The dollar sign works fine, however. I have tried it using different fonts but same problem, my guess now i[详细]

2023-04-02 03:16 分类：问答
XCode 4 - Warning for - (void)renderInContext:(CGContextRef)ctx

I have this code: + (UIImage*) someImageMethod:(UIImage*)originalImage { UIImageView *tempImageView = [[UIImageView alloc] initWithImage:originalImage];[详细]

2023-04-01 22:42 分类：问答
iPhone - Draw white text on black view using CGContext

I can\'t achieve drawing som开发者_C百科e white text on a black view using CGContext in a drawRect method.[详细]

2023-04-01 21:44 分类：问答
cut part image from uiimageview

I have a quick question. I am trying to draw a shape on a picture and be abl开发者_开发知识库e to cut what is in the circle. Any ideas how I would go about doing that?You need to use core graphics fo[详细]

2023-04-01 20:25 分类：问答
Gradient texture background

I want to create a dark grill texture that fades to black for a configuration screen under a page curl effect.[详细]

2023-04-01 19:55 分类：问答
iPhone - Drawing something at a given point using angle from center of view

I have a view with a point on its center. I have an angle in degrees (or radian, that\'s not the problem).[详细]

2023-04-01 13:43 分类：问答
basic question about coregraphics

Im working on a project with out Interface Builder, i want to draw a line and a test square, but is not working[详细]

2023-04-01 02:23 分类：问答
CGAffineTransformMakeRotation around external point

are there a way for rotate UIImage around external开发者_开发问答 point using CGAffineTranformMAkeRotation?[详细]

2023-04-01 01:33 分类：问答
Taking snapshot of contents in CGL?

I want to create a image out of Core OpenGL context. I used following code but it creates a black image. So I guess I cannot use glReadPixles there? Any other suggestions please?[详细]

2023-03-31 17:54 分类：问答
CGContextShowText is rendering upside down text (mirror image)

Without my doing anything to request up开发者_JS百科side down text, CGContextShowText is drawing it in that fashion. It is a mirror image vertically of what it should be.[详细]

2023-03-30 23:00 分类：问答