cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   ck
   Member

   Hi,

   I want basically draw primitives to the screen that are antialiased. Because of the lack of FSAA I suppose the only way of achieving a good looking result is to draw those shapes to a texture and use them on sprites. The image should only be generated once and doesn't change over time (apart from scaling the sprite).

   After having a look into the RenderTexture sample I'm still not quite sure what the best way is to achieve this. Would it be better to create an image from CGImageContext that will go into the texture and use Quartz2D to draw shapes on it? Because I'm going to create many instances of sprites that use the same texture I was wondering if there is need to create versions of different resolutions besides using AtlasSprites?

   Thanks for any help.

   Posted 2 years ago #
2. 

   Jeston
   Member

   I have just done something similar, see my post located here: http://www.cocos2d-iphone.org/forum/topic/2681

   My technique is just as you described it, create an offscreen bitmap, mantain its context, clear it, and use the quartz drawing functions to render into it.

   In my case I was storing a list of points and drawing these as a filled polygon / path, but you can look through the api and find the circle / ellipse, calls.. It worked pretty good,

   Another method I think would be to create a mesh in some 3d program and bring in the uv mapping / vertex data and override the draw message using these verts,

   Look at the function:
   - (void) drawAtPoint:(CGPoint)point
   to see a quad render.

   Posted 2 years ago #

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