quartz-2d_开发者

iPhone/ipad convert quartz2d line drawing to opengl

This is a completely rookie question but I\'m looking for some beginners guidance with opengl. I\'ve got an app that uses quartz 2d to draw static lines on a view. This has been working fine but we ar[详细]

2023-04-09 05:34 分类：问答

Best way to create a view for notes

I\'m writing an iPhone/iPad application that will allow a user to fill in blanks for notes.The notes will be different each week.I see downloading the notes in an XML format from our webserver.What I\[详细]

2023-04-05 06:03 分类：问答

GetPictInfo replacement Api in quartz 2D

how to get pict info without using deprecated call to GetPictInfo ? Also, is there anyway to 开发者_如何学Goget pixmaphandle without using deprecated Api, i could not find any .I suggest you relearn h[详细]

2023-04-04 23:56 分类：问答

CoreAnimation stack going crazy

I\'ve been asked to help fix a bug for a client, who is an inexperienced developer. However, I\'m absolutely stumped by this one.[详细]

2023-04-04 06:34 分类：问答

Drawing a line with a shadow, but only want to keep shadow. IOS

I am trying to draw a line with a shadow but I do not want to keep the line but only the shadow. I have attempted to set the stroke color of the line to clear but when I do that the shadow also disa[详细]

2023-04-04 03:11 分类：问答

conversion from quickdraw to quartz 2D

I have an old code that uses开发者_开发百科, Rect r; GetPortBounds(some_bitmap,&r); PixMapHandle somehandle = GetGWorldPixMap(some_bitmap);[详细]

2023-04-03 22:22 分类：问答

How to write to UIImage?

This code is not working and i do not understand the mistake. Please help. -(UIImage *)addText:(UIImage *)img text:(NSString *)text1[详细]

2023-04-03 16:50 分类：问答

In CoreGraphics drawing how can I keep the point of overlap from being darker than the rest of the line?

My app uses core graphics for custom finger paint drawing. I allow the user to change the alpha of the line and a new line is continuously drawn on touches moved. When I make the alpha lower than 1.0[详细]

2023-04-03 16:25 分类：问答

How do I draw an angle gradient using CALayer or CoreGraphics functions? [duplicate]

This question already has answers here: Closed 11 years ago. Possible Duplicate: CGContextDrawAngleGradient?[详细]

2023-04-03 10:09 分类：问答

To clear a line in iPhone

I need to clear the current line graph and replace it with a new line graph, as and when I change the month (The createLineGraph method is called each time I change the month). What happens is that, p[详细]

2023-04-02 12:06 分类：问答