Thank you very much: I have experimented with 'lock screen', but, obviously,
in the wrong places in the script.

Richmond.

On 21.03.2016 21:36, Terence Heaford wrote:
Just added lock screen and unlock screen


on mouseUp
    put fld "VERTS" into fld "VERTS2"
    put fld "VERTS" into fld "VERTS3"
    put 2 into STRETCH
    repeat until STRETCH > 300
       lock screen
       put (360 + STRETCH),310 into line 3 of fld "VERTS2"
       put (360 - STRETCH),10 into line 4 of fld "VERTS2"
       ----
       put (360 - STRETCH),310 into line 3 of fld "VERTS3"
       put (360 + STRETCH),10 into line 2 of fld "VERTS3"
        put (360 + STRETCH),10 into line 4 of fld "VERTS3"
       set the relativePoints of graphic "GG" to fld "VERTS2"
       set the relativePoints of graphic "GG2" to fld "VERTS3"
    set the left of graphic "GG" to 50
    set the top of graphic "GG" to 10
    set the left of graphic "GG2" to 50
    set the top of graphic "GG2" to 10
    add 2 to STRETCH
    unlock screen
    --wait 2 ticks
    end repeat
end mouseUp

All the best

Terry


On 21 Mar 2016, at 19:18, RM <richmondmathew...@gmail.com> wrote:

I have been messing around with what are, frankly, extremely simplistic, 
experiments in animating
polygon graphics.

However, as I change the vertices of a graphic the thing won't stay still but 
keeps moving its centre,
so I have to keep reseting its left side. As a result while the animation is 
running the whole thing looks
like a horrible, jerky film from about 1880, which, while charming in its own 
way is not what I am
aiming at: a smooth, flowing animation.

I would be most grateful for any ideas on how to achieve that smoothness of 
motion.

Images and stack here: http://forums.livecode.com/viewtopic.php?f=10&t=26858

Richmond.

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