--------------------------
Message: 12
Date: Fri, 24 Apr 2009 17:49:05 -0700
From: Scott Rossi <[email protected]>
Subject: Re: Rotating images
To: Revolution Mail List <[email protected]>
Message-ID: <c617ac11.411b3%[email protected]>
Content-Type: text/plain; charset="US-ASCII"
Recently, Randall Reetz wrote:
Can one rotate images by degree or fraction of degree?
You should be able to rotate an image simply by using:
set the angle of img "myCoolImage" to 45
The docs say the numeric value is an integer so like most position-
based
things in Rev you can only use whole numbers, no fractions. Until
Rev gets
subpixel positioning, we won't be able to accomplish fine
positioning of
graphics and images.
Regards,
Scott Rossi
Creative Director
Tactile Media, Multimedia & Design
Scott (and Randall),
I've been playing with moving images around a loop while keeping the
image oriented along the tangent and found some strange things about
the input that RR allows.
It turns out that RR will truncate a fractional angle for you. (See
script below.)
It will also accept fractional input to "move image from pt1 to pt2"
where the two points have fractional items, but will not accept a
fractional input to "Move image to tPt" if tPt contains fractional
items.
Nor will RR accept fractional input to setLoc but there will be no
error message. It just interest a return into the list of points and
you get a gap in the line, or nothing if all the points are fractional.
I put in a request many years ago asking that RR do all the truncating
in the engine. Sooo much simpler. If that request is still active, I
would appreciate your vote. (The trouble is that I means I have to
keep two sets of books for the graphic points, one for calculating the
tangent angle and one for setting the graphic points to display the
graphic.)
So in summary:
Accepts fractional input:
Move object from pointA to pointB
Set angle of image to tAngle
Does not accept fractional input:
Move object to tPoint
Set the loc of object to tPoint
Script to test:
on mouseUp
put 100/3, 200/3 into tLoc
put 400/3,600/4 into tNewloc
move image 1 from tLoc to tNewLoc--This works.
--but: move image 1 to tLoc fails with the message "tLoc is not a
point"
--and set the loc of image 1 to tLoc also fails
--To test "set angle" using fractional input:
set the angle of image 1 to 0
wait 1 tick--Necessary on the Mac to get a screen refresh
put 10 into i
repeat
add .1 to i
set the angle of image 1 to i
put the angle of image 1 & cr after results
if i > 30 then exit repeat
end repeat
put results into msg box
--You will find only integer values in the message box
--RR will truncate the angle input for you.
end mouseUp
_______________________________________________
use-revolution mailing list
[email protected]
Please visit this url to subscribe, unsubscribe and manage your subscription
preferences:
http://lists.runrev.com/mailman/listinfo/use-revolution
