quartz-2d

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function CGAffineTransformMakeRotation and CGAffineTransformMake can not work together using quartz-2d

It seems that function CGAffineTransformMakeRotation and CGAffineTransformMake can not work together.[详细]

2023-02-28 06:41 分类：问答
How to implement touch when using quartz-2d

I\'m using quartz-2d to do a school project. I have implement a user interface like the following.开发者_JS百科[详细]

2023-02-27 16:50 分类：问答
Using Opacity-generated layers in Quartz 2d instead of drawing to the view's layer

Firstly, be gently with me. I\'m new to Objective C and iOS programming. I\'ve just purchased a copy of Opacity and I\'m playing around with layers. My only grade A success so far is to design and suc[详细]

2023-02-27 02:50 分类：问答
what's the iphone bottom right Coordinates?

start point of the line is (0,0). What\'s the bottom right Coordinates? Thanks! 开发者_Python百科Dimensions of the device screen:[详细]

2023-02-26 06:56 分类：问答
Open link in webView or safari from PDF page in iphone SDK?

I am working on PDF Reader from last few days. I got lots of issues while dealing with PDF using Quartz 2D. Currently I want to do is My PDF has links in it. I want to open this link in UIWebView or 开[详细]

2023-02-22 18:13 分类：问答
How to animate wedge angle changes in iOS

I have a cricle of constant size and a wedge inside of the circle that rotates around the center (like a radar). Radius of that wedge is also constant, but angle of the wedge changes. It can be severa[详细]

2023-02-22 06:29 分类：问答
UIGraphicsGetCurrentContext Problem

I have a problem drawing objects passing this graphic context CGContextRef context = UIGraphicsGetCurrentContext();[详细]

2023-02-20 11:31 分类：问答
How do I change a partially transparent image's color in iOS?

I have a single-color image that has partial transparency. I have both normal and @2X versions of the image. I would like to be able to tint the image a different color, in code. The code below works[详细]

2023-02-20 02:46 分类：问答
how to draw a picture in iPhone with Quartz2d

I\'m studying Quartz now and want to do a demo like this: when your finger moves on the iPhone screen, it shows the track in red color。[详细]

2023-02-17 00:31 分类：问答
First Quartz 2D program giving errors... What's the mistake?

I am trying to make my first Quartz 2D app for MAC. I just have my app delegate and a myView class which is as below -[详细]

2023-02-16 07:55 分类：问答