[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Render an animation in a bitmap file (CARenderer)

Subject: Render an animation in a bitmap file (CARenderer)
From: Martin <email@hidden>
Date: Mon, 3 Mar 2008 00:16:16 +0100
Delivered-to: email@hidden
Delivered-to: email@hidden
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:from:to:content-type:content-transfer-encoding:mime-version:subject:date:x-mailer; bh=fk1VkekfXnNXG2Wo48Hh4KgURpxtcynx4C/wlxqSByk=; b=MMDkZAqRKhdXekkuflYUqxBHezgWmgfifJlpH+NgZXet+kV50Ge+k2u53BjT9ipUjIkFLq7/edI9gU58tme9Blm8BmidneS9nRSPNMZXDK6KkRsS2s8sZbdSzyA1leMWlycQOel1Q/ne0+pR0q0Nar4P4Y3muADrB2TJ0Ndae+4=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:from:to:content-type:content-transfer-encoding:mime-version:subject:date:x-mailer; b=ufpgbYFxPfLpflef7UKNcUQlnRVyNk+ZmEXdyXg5v+X+Dc32Y3bGDrf4EY+6VdVIvx5HzZdV4xk5oVpzVbGOsV3Lx3GHgFYoog2xCQydo+dV7X7l7ro44eEtTJa1G5OJIb3NKcooYz1RHoCLcDrRFA8N+aB6dUMwkaeSjQdmr/4=

Hi,

I'd like to render a CALayer animation in a series of bitmap files rather that in an NSView.

I've succeeded  in rendering 1 frame in a bitmap file by :
- creating a NSOpenGLContext
- creating a CARenderer (named renderer)
- calling the following code:

[renderer beginFrameAtTime:0.0 timeStamp:NULL];
[renderer addUpdateRect:CGRectMake(0.0, 0.0, _width, _height)];
[renderer render];
[renderer endFrame];

- saving the content of the context in a bitmap file

Now I'd like to do the same thing for each frame of an animation. But I have absolutely no idea on how to do this... - at what point in the code should I add the animation to the layer? - I've tried different values for the first argument of beginFrameAtTime:timeStamp:, but only the 1st frame is rendered? - why does [renderer nextFrameTime] always return "inf"?

Thanks,
-Martin
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Quartz-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/quartz-dev/email@hidden

This email sent to email@hidden

Prev by Date: Re: Color values from a CGImage
Next by Date: Possible Bug With Quartz Event Services API
Previous by thread: Re: Color values from a CGImage
Next by thread: Possible Bug With Quartz Event Services API
Index(es):
- Date
- Thread

Home