Missing pixels in aalines when using integer coordinates

[sparklost]

It turned out that those endpoints I disable at specific situations are needed when points coordinates are integer.
So it created gaps on edges. And those gaps are making draw.aapolygon PR tests to fail. (#3126)
I just made it so disabling endpoints happens only for points that have float coordinates.

Both aalines are drawn with int values, left is before, right after.

Sample code

import pygame
pygame.init()
screen = pygame.display.set_mode((100, 100))
run = True
while run:
  for event in pygame.event.get():
      if event.type == pygame.QUIT:
          run = False
  screen.fill("black")
  # using ints, point of interest: (5, 3)
  pygame.draw.aalines(screen, "white", True, [(1, 3), (3, 5), (5, 3), (3, 1)])
  # using floats, point of interest: (11, 3.1)
  pygame.draw.aalines(screen, "white", True, [(7, 3), (9, 5), (11, 3.1), (9, 1)])
  pygame.display.flip()
pygame.quit()

[MyreMylar]

OK, the logic makes sense. We can get this merged into main and then it'll solve the problems in the other PRs when we bring them up to main.

👍

[damusss]

yes