hi all,
i follow rhe forum for a long time… and now i have a problem and unfortunataly i couldn’t find the solution.
i’d be really glad if someones could help me find out how i can solve that problem.
i will try to explain it by the picture

The A part is the initial situation of the progress and i have 4 vertices at that moment

The B part is the progress that i wanna make it real. While the triangle goes through the square i want to get the progress to be like exactly in the part B
i really appreciate and thank for your help in advance