So I had this project a whil e ago, and decimation master worked great, masked the areas i didnt need decimated and voila. Now ive revisited this again, but decimation master isnt working the same way. When i decimate it messes up all the polys that are not highlighted, what could be going on? Here is the link to the image showing the issue, no matter how much percentage i adjust it by, it just forms the same exact messed up poly EVERYTIME
image of the issue: http://imgur.com/3q7JxW5
It’s not clear from your image where your mask is but it looks as though you need to invert your mask before running Decimation Master (assuming you want to preserve the face area). The extreme decimation you are seeing is because most of the model is masked. Decimation Master then has to decimate the unmasked area to a greater extent in order to reach the target polygon count. So:
- Don’t mask any more of the model than is absolutely necessary.
- Don’t set the polygon target too low.
Marcus is right: you are asking Decimation Master to remove more vertices than what you protected with your mask.
If your model has 1 million polygons and if you are applying a mask on 8/10 of the model (roughly 800 000 vertices protected) and you are asking 50 000 vertices for your decimation, Decimation master already has to keep more than what you are requested. Then it leaves just 2-3 vertices for the unmasked points.
My advice is to use a Mask on your model, but not at 100% of intensity but let’s say 80% (press CTRL and set RGB slider to 80). Like that Decimation Master will start reducing, but slightly your model on protected areas and will decimate more unmasked areas. And of course, request a far higher vertices count for your decimation.