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Amiga Tools 4
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Amiga Tools 4.iso
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grafix
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3d
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dust
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dusthelp2
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twirl
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1996-02-26
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COMMAND TWIRL
-----------------------------------------------------------------
Purpose: blackhole-effect around the z-axis
Usage: TWIRL(<srcID>,<destID>,<amount>
[,<damping>,<contraction>,<radius>
[,<xCentre>,<yCentre>,<zCentre>]])
Examples: twirl(1,2,30,)
twirl(1,2,30,2,10,0)
twirl(1,2,30,2,10,0,-10,20,0)
Description: 1. <amount> is the twirl-amount in degrees, try large
angles (>360) for good effects
Only this parameter should be tweened in animations
2. <damping> controlles the transition of <amount>
from the centre to the border of the object
(0.5..3 are good values)
3. <contraction> controlls the object-contraction,
if the centre-polygons become distorted (turned)
you have to decrease this value,
default: 1/20 of object-size
4. <radius> specifies the area which is only rotated by
<amount> (no damping and contraction)
5. <*Centre> describes the source-point for
the twirl effect, by default this is the object-centre