Trimaginator is described as 'Allows you to unleash your creativity and transform your photos into unique Works of Art! Triangulation renderer with lots of control options for creative techno artwork' and is an app in the photos & graphics category. There are three alternatives to Trimaginator for a variety of platforms, including iPhone, iPad, Mac, Windows and Linux apps. The best Trimaginator alternative is Dmesh, which is free. Other great apps like Trimaginator are FOSStriangulator and LightWeaver.
DMesh, designed by Dofl Yun, is a custom creative application that turns images into techy artwork. It works by analyzing an image and generating a triangulation pattern for a beautiful finished product.
A free and open-source tool for making triangulated, low-poly illustrations out of photos.
you can save as vector or 2 other formats, you can add points, the down side is that if you go near the edge it can collapse a neat edge into irregular shape.