I have a mesh with 2 separate morph targets, let’s call them B and C with A being the base shape. The influence of both targets depends on 2 settings, one is about the size of the final morphed mesh and the other one is about how much A I want in respect to B. The final shape is basically a mix between A, B and C

At first I assumed I just had to find the wighted average of the 3 geometries, so if A’s size is 1, B’s is 2 and C’s is 3 and I take 20% B and 70% C (the remaining 10% is A) I’d find a final size of 2,6 (1x10%+2x20%+3x70%) but that didn’t seem to work

Then I changed approach and tried to assume something like, if I take 20% B it means that the morphed shape will “move” 1/5 its way towards the B target, and if I take 200% it will “move” twice the max so that if B is double the size of A, with 200% the final shape will become 4x A, and to evaluate the influence of multiple morphs I multiplied the individual factors, but that didn’t seem to work either

Is there any info on how morph targets work exactly? To summarize, what I need is to be able to determine the influences of multiple morph targets I need in order to obtain a morphed shape with the size I want (with 2+ morph targets)