Message: 9 From: "Mathewson" <[EMAIL PROTECTED]> Subject: Rotating Images: the rot sets in... To: [EMAIL PROTECTED] Date: Mon, 23 Jun 2003 08:21:13 -0400 Reply-To: [EMAIL PROTECTED]
I'm playing around with rotating images and am wondering about the phenomenon of "fuzzy edges".
Let us just suppose I have a GIF image which I want to rotate in increments of 45 degs: all very simple: described in Help files & so forth.
What is not explained is that the edges of the image (if it
is plain colour) or the whole image (if it is a picture)
will deteriorate markedly as it rotates. This effectively
means that the
'rotate' term is not much use.
If one has a family of images (in the case above I would need 8) that each represent the image rotated at certain increments one can keep replacing images (like a slide show) to give an impression of rotation. One could use an animated GIF.....or a Quicktime Movie....or....blah, blah, blah. Makes your stack much larger!
The problem with this is if one is using the rotating image as the template for the windowShape......
The 'rotate' term is great, in theory; but how can one keep the image quality intact?
Ideas gratefully received.
Richmond Mathewson
Richmond,
You might want to try the new "set angle" feature in 2.0
As I mentioned in a previous post, I have been having some problems with this. In that post I said:
I have been having some problems with the new "set angle" feature of 2.0
My image (a fish) is long and thin. If I resize it, lock position and size, and then set the angle to, say, 45, the image rect is changed and the image distorted.
A work-around is to change the *canvas* size (in Photoshop) so that it is square before importing it into RR as an image.
The action is rather slow. You can't do any quick succession of rotations but shape preervation is very good. As an application of optical refraction of light moving from water to air, I wanted to let my fish (an Archer fish who squirts a jet of water at passing bugs) angle himself to aim at the perceived position of an bug on an overhanging branch, but alas, it runs too slowly.
You can rotate a graphic much faster, but not with the "set angle" (unless they are regular polygons). This issue has been discussed on the list before. It requires just a little bit of trig to find the new position of the graphic points after rotation. If you always start from the original shape, there is never any distortion.
Jim _______________________________________________ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
