Another way would be to get the StrandPostion, subtract the PointPosition (or the first value of the StrandPosition array), Multiply By Scalar by some factor less than zero, add back on the Point Position, then set as the StrandPosition again..
On 5 March 2014 17:00, adrian wyer <adrian.w...@fluid-pictures.com> wrote: > > > > > i thought this might work...maybe i'm just not getting it? > > > > a > > > > -----Original Message----- > From: softimage-boun...@listproc.autodesk.com > [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Grahame > Fuller > Sent: 05 March 2014 16:39 > To: softimage@listproc.autodesk.com > Subject: RE: shrinking strands > > > > StrandLength is just a custom attribute that gets set by some of the stand > compounds as a convenience, e.g., if you want to use it to drive something > else. It doesn't actually control the strand length, it's just the sum of > deltas in the StrandPosition array. > > > > If you want to make the strand shrink, you can remove the last item from > the > StrandPostion array instead. > > > > gray > > > > From: softimage-boun...@listproc.autodesk.com > [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of adrian wyer > > Sent: Wednesday, March 05, 2014 11:29 AM > > To: softimage@listproc.autodesk.com > > Subject: shrinking strands > > > > quick question (work goes on even after yesterday) > > > > i have a particle system firing points that have strands trailing after > them, they stick to a surface on collision > > > > i have a state machine which, for starters, won't let me use "IsStuck" as a > trigger, i can work around this, but it's bloody annoying > > > > the problem is that once the particle enters state 1, IE is stuck on the > floor, i want the strand trail to shrink over time > > > > i have tried starting a timer on enter state 1, then grabbing values from > the timer and subtracting them from .strandlength, but it only shrinks on > the first frame, even though this is plugged into execute on every frame > > > > i can post a scene i f someone fancies having a look, or if anyone knows > how > to plot rocket trajectories and have them fade on impact, i'm all ears! > > > > thanks > > > > > > Adrian Wyer > > Fluid Pictures > > 75-77 Margaret St. > > London > > W1W 8SY > > ++44(0) 207 580 0829 > > > > adrian.w...@fluid-pictures.com<blocked::blocked::blocked::blocked::mailto: > ad > rian.w...@fluid-pictures.com> > > www.fluid-pictures.com<blocked::blocked::blocked::blocked:: > http://www.fluid- > pictures.com/> > > > > Fluid Pictures Limited is registered in England and Wales. > > Company number:5657815 > > VAT number: 872 6893 71 > > > >
