draw_polygon outlines appear incorrect

[west-rynes]

Version of Dear PyGui

Version: 0.6.294
Operating System: macOS 10.15.7 & Windows 10 (both with same issue)

My Issue/Question

The outlines using draw_polygon do not appear to be drawing correctly. Also, if you draw the same polygon using draw_triangle they do not match each other.

Expected behavior

I think the outlines should be uniform thickness. I would also think that the polygon output and triangle output would be the same. The triangle output corners look better than the polygon but still not uniform (cool stylistic option but I don't think that is the intention).

Screenshots/Video

Note that the poly triangle fill also gets cut off on the right part in addition to the outline issues.

Note, if you set the thickness=0 the two drawings still do not look the same. The polygon looks more ragged.

Standalone, minimal, complete and verifiable example

from dearpygui.core import *
from dearpygui.simple import *


w,h = 500, 500
with window("tri", width=w, height=h):
    set_window_pos("tri", 0,0)
    add_drawing("d1", width=w, height=h)
    draw_triangle("d1", [100,150], [100, 400], [450, 200], color=[255, 255, 255, 255], fill=[255, 0,0,255], thickness=20)

with window("poly", width=w, height=h):
    set_window_pos("poly", w, 0)
    add_drawing("d2", width=w, height=h)
    draw_polygon("d2", [[100,150], [100, 400], [450, 200], [100,150]], color=[255, 255, 255, 255], fill=[255, 0,0,255], thickness=20)

start_dearpygui()

[hoffstadt]

This is a known issue in imgui, found here. We also have a related issue #371.

As for the polygon fill not appearing the same, this is because we had to create our own polygon fill algorithm. Imgui only supports convex polygon's. We provided a more generic polygon fill.

Obviously it has a few issue, but they will be resolved in 0.7 before 1.0.