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Article #64

Re: Particle Playground in RAM preview

#64
From: Richard_Kinsinger
Date: Mon, 30 Mar 2009 13:57
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Mylenium - Either you or I are missing the point. In my view there need not be any change in how a user would input parameters into an effect. For example, Force Radius would still be entered as a number measured in pixels, not a percent of screen size. The change would be "behind the scenes". If Ae was asked to do a RAM preview at half-resolution, for example, for that preview it would multiple the number in original pixels by two to get the number of 2x pixels which gives the same fraction of screen size. My experiments show hat this would give the same (or very nearly the same) behavior in the preview as will be seen in the final rendering. The same behind-the-scenes temporary conversion must be made in speeds expressed as pixels per frame or any other parameter with pixel dimensions. This is just a matter of the RAM preview engine knowing which effect parameters are dimensioned in pixels and what resolution it is being asked to use - both easily knowable. Again, the parameter values entered by the user would be unchanged. No need for relative units as far as the user is concerned.
I agree that the current behavior does what the coders intended, but giving misleading previews is a serious weakness if fixing it has no negative side effects. I do not agree that if Adobe warns users of this weakness, all is hunk-dory.
Am I missing something?
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Newsgroups: adobe.after.effects
Subject: Re: Particle Playground in RAM preview
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Date: Mon, 30 Mar 2009 06:57:18 -0700
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