Add Circle collidepoint()

[itzpr3d4t0r]

This one adds the base for adding more collision algorithms in the future for all shapes and the Circle.collidepoint function.
Also adds tests, docs and stubs.

Also adds an internal C api function for getting two doubles out of a fastcall array of PyObjects. This is used extensively across the geometry module and saves a lot of lines of code.

Can't thank @Emc2356 enough for making this possible, great job on the include stuff!

Credits

Geometry Project:
For code, docs and tests:
@novialriptide @Emc2356 @itzpr3d4t0r @ScriptLineStudios @avaxar @Matiiss @newpaxonian @maqa41 @blankRiot96
Also thanks to @Starbuck5 for kickstarting the idea and the occasional help!

Functionality added in this PR

• circle.c
  https://github.com/pygame-community/pygame-geometry/blame/main/src_c/circle.c
  Credits to @Emc2356 @itzpr3d4t0r @novialriptide
• geometry_test.py
  https://github.com/pygame-community/pygame-geometry/blame/main/test/test_circle.py
  Credits to @itzpr3d4t0r @novialriptide
• geometry.rst
  https://github.com/pygame-community/pygame-geometry/blame/main/docs/circle.rst
  Credits to @itzpr3d4t0r
• collisions.c
  Credits to @Emc2356 @itzpr3d4t0r @novialriptide @ScriptLineStudios @avaxar
  https://github.com/pygame-community/pygame-geometry/blame/main/src_c/collisions.c
• collisions.h
  @Emc2356 @itzpr3d4t0r @novialriptide
  https://github.com/pygame-community/pygame-geometry/blame/main/src_c/include/collisions.h

[MyreMylar]

LGTM 👍

Tested it works at colliding with the current mouse position:

import pygame

from pygame import Color
from pygame.geometry import Circle

pygame.init()
screen = pygame.display.set_mode((640, 480), 0)

white_background = pygame.Surface(screen.get_rect().size)
white_background.fill((255, 255, 255))

circle_1 = Circle((50, 50), 30)
circle_col = Color("red")

running = True

while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    if circle_1.collidepoint(pygame.mouse.get_pos()):
        circle_col = Color("blue")
    else:
        circle_col = Color("red")

    screen.blit(white_background, (0, 0))

    pygame.draw.circle(screen, circle_col, (circle_1.x, circle_1.y), circle_1.r)

    pygame.display.flip()


pygame.quit()

[novialriptide]

LGTM, I see nothing out of the ordinary here.