i have set 4 shape hints, but the corners turn. Corner point b goes to corner point d and d to b.
What am i doing wrong?
we can't tell what you're doing because we can't determine what's in the two keyframes.
ie, shape hint a in the first keyframe will tween to shape hint a in the second keyframe. likewise, b will go to b, c to c and d to d.
so, move a,b,c,d in the second keyframe to the spots where you want a,b,c,d (resp) in the first keyframe to tween.
I do that, don't I? Another example. e,f,g,h. The blue rectangle should be scaled vertically upwards.
But in the tween the lower edge runs up over the upper edge and then scales upwards. See attachement.