I am working on a game that uses simple 2d vector graphics. I want a tool that will let me visually draw things like arbitrary polygons by placing points.
A perfect tool would present a grid that I could scale larger or smaller (ie: the window is 10 units across or the window is 20 units across). It would let me draw a polygon on this grid, and will tell me, simply, the coordinates of each point.
It would be great if this tool could then export a file format that was something like
0, 5 3, -2 0, 0 -3, -2
For bonus points, it would be great to be able to assign other attributes to each point. In the end, this will get passed to OpenGL, so things like color and opacity could possibly be used.