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Amiga Plus 2004 #9
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Amiga Plus CD - 2004 - No. 09.iso
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eot_perspective.ifx
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2004-08-03
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981b
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44 lines
/*
* EOT_Perspective.ifx
* Written by Thomas Krehbiel
*
* 3D Perspective Rotate.
*
* Inputs:
* Word(Arg(1),1) = Frame number (1 - N)
* Word(Arg(1),2) = Main filename ("-" if not specified)
* Word(Arg(1),3) = Swap filename ("-" if not specified)
* Word(Arg(1),4) = Sequence number (?)
* Word(Arg(1),5) = Total number of frames (N)
*
* Returns:
* 0 if successful, non-zero on failure
*
*/
OPTIONS RESULTS
framenum = Word(Arg(1),1)
mainname = Word(Arg(1),2)
swapname = Word(Arg(1),3)
seqnum = Word(Arg(1),4)
framemax = Word(Arg(1),5)
base = 'Autofx_Perspective_'
x1 = GETCLIP(base||'x1')
y1 = GETCLIP(base||'y1')
z1 = GETCLIP(base||'z1')
x2 = GETCLIP(base||'x2')
y2 = GETCLIP(base||'y2')
z2 = GETCLIP(base||'z2')
/* linear interpolation */
x = x1 + ((x2 - x1 + 1) * framenum % framemax)
y = y1 + ((y2 - y1 + 1) * framenum % framemax)
z = z1 + ((z2 - z1 + 1) * framenum % framemax)
Hook Perspective x y z AntiAlias
EXIT rc