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Hi! I'm having some problems creating a shadow raycast library.
The raycast is working perfectly

But when I try to draw the shadow polygon it looks like the love.graphics.polygon is sort of "jumping" some of the points of the raycast


Here's the code:
https://github.com/Alucherdi/Love2d-sha ... ee/develop

I hope you can help me with my problem, feel free to ask any question, I'll answer as soon as possible. Thanks!

If the polygon is a triangle fan, its first point must be in its center (i.e. where rays start), otherwise overlapping will occur, as seen on your image.

raidho36 wrote:If the polygon is a triangle fan, its first point must be in its center (i.e. where rays start), otherwise overlapping will occur, as seen on your image.

And the Polygon must be "simple". There's a love.math function to tesselate complex polygons into multiple simple ones i believe.

Yes, love.math.triangulate

It's not gonna be needed for this particular use, since it generates perfectly good triangle fans as it is.

Ok ok let me do some test with that information

Btw, it's not a triangle fan, I sort the angles and then make the polygon with the intersections. The first point in the center actually kind of worked! but there is a gap between 2 points. I also tryed to initialize the polygon points table with the last intersection but the overlap come back

You just add that point again so that the triangle fan closes.

Also yes it is most definitely a triangle fan.

It's not!, when I draw the polygon the points that intersects don't return to the origin uwu, and it worked! thanks a lot!!



Thanks a lot, I'm pushing in git with the results

I guess technically you're generating a triangle fan, but you're drawing a polygon.