I wish to make a color gradient on the hair, say having the root red and the tip blue. The StrandUV.y in the HairVertex node helps, but I have two issues:
the strands' tips don't all have the same color because they have various lengths and StrandUV.y is scaled with the longest in the group.
the strands of the bangs have blue tips even if they are shorter, because they are on a separate group.
The solution I found was to have different materials on the different groups and calibrate the gradient length and/or spread for each group, with non ideal results.
A perfect solution would be to have access to the initial vertex position of the hair, so I can color my hairstyle with a simple gradient on Y axis.
It would also be good to have the non-scaled strand rate (0 is root and 1 is tip, whatever is the length), and the strand length so we can make a lot of different combinations.
I wish to make a color gradient on the hair, say having the root red and the tip blue. The StrandUV.y in the HairVertex node helps, but I have two issues:
The solution I found was to have different materials on the different groups and calibrate the gradient length and/or spread for each group, with non ideal results.
A perfect solution would be to have access to the initial vertex position of the hair, so I can color my hairstyle with a simple gradient on Y axis.
It would also be good to have the non-scaled strand rate (0 is root and 1 is tip, whatever is the length), and the strand length so we can make a lot of different combinations.