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`pygame.gfxdraw`
  pygame module for drawing shapes

  EXPERIMENTAL!: meaning this API may change, or disappear in later pygame releases. If you use this, your code will break with the next pygame release.

  Draw several shapes to a surface.

  Most of the functions accept a color argument that is an `RGB` triplet. These can also accept an `RGBA` quadruplet. The color argument can also be an integer pixel value that is already mapped to the Surface's pixel format.

  For all functions the arguments are strictly positional. Only integers are accepted for coordinates and radii.

  For functions like rectangle that accept a rect argument any (x, y, w, h) sequence is accepted, though `pygame.Rect` pygame object for storing rectangular coordinates instances are preferred. Note that for a `pygame.Rect` pygame object for storing rectangular coordinates the drawing will not include `Rect.bottomright`. The right and bottom attributes of a Rect lie one pixel outside of the Rect's boarder.

  To draw an anti aliased and filled shape, first use the aa* version of the function, and then use the filled version. For example

      col = (255, 0, 0)
      surf.fill((255, 255, 255))
      pygame.gfxdraw.aacircle(surf, x, y, 30, col)
      pygame.gfxdraw.filled_circle(surf, x, y, 30, col)

  Note that pygame does not automatically import pygame.gfxdraw, so you need to import pygame.gfxdraw before using it.

  Threading note: each of the functions releases the GIL during the C part of the call.

  The pygame.gfxdraw module differs from the draw module in the API it uses, and also the different functions available to draw. It also wraps the primitives from the library called SDL_gfx, rather than using modified versions.

  New in pygame 1.9.0.

  `pygame.gfxdraw.``pixel`()
    place a pixel
    pixel(surface, x, y, color) -> None

    Draws a single pixel onto a surface.

  `pygame.gfxdraw.``hline`()
    draw a horizontal line
    hline(surface, x1, x2, y, color) -> None

    Draws a straight horizontal line on a Surface from x1 to x2 for the given y coordinate.

  `pygame.gfxdraw.``vline`()
    draw a vertical line
    vline(surface, x, y1, y2, color) -> None

    Draws a straight vertical line on a Surface from y1 to y2 on the given x coordinate.

  `pygame.gfxdraw.``rectangle`()
    draw a rectangle
    rectangle(surface, rect, color) -> None

    Draws the rectangle edges onto the surface. The given Rect is the area of the rectangle.

    Keep in mind the `Surface.fill()` method works just as well for drawing filled rectangles. In fact the `Surface.fill()` can be hardware accelerated on some platforms with both software and hardware display modes.

  `pygame.gfxdraw.``box`()
    draw a box
    box(surface, rect, color) -> None

    Draws a box (a rect) onto a surface.

  `pygame.gfxdraw.``line`()
    draw a line
    line(surface, x1, y1, x2, y2, color) -> None

    Draws a straight line on a Surface. There are no endcaps.

  `pygame.gfxdraw.``circle`()
    draw a circle
    circle(surface, x, y, r, color) -> None

    Draws the edges of a circular shape on the Surface. The pos argument is the center of the circle, and radius is the size. The circle is not filled with color.

  `pygame.gfxdraw.``arc`()
    draw an arc
    arc(surface, x, y, r, start, end, color) -> None

    Draws an arc onto a surface.

  `pygame.gfxdraw.``aacircle`()
    draw an anti-aliased circle
    aacircle(surface, x, y, r, color) -> None

    Draws the edges of an anti aliased circle onto a surface.

  `pygame.gfxdraw.``filled_circle`()
    draw a filled circle
    filled_circle(surface, x, y, r, color) -> None

    Draws a filled circle onto a surface. So the inside of the circle will be filled with the given color.

  `pygame.gfxdraw.``ellipse`()
    draw an ellipse
    ellipse(surface, x, y, rx, ry, color) -> None

    Draws the edges of an ellipse onto a surface.

  `pygame.gfxdraw.``aaellipse`()
    draw an anti-aliased ellipse
    aaellipse(surface, x, y, rx, ry, color) -> None

    Draws anti aliased edges of an ellipse onto a surface.

  `pygame.gfxdraw.``filled_ellipse`()
    draw a filled ellipse
    filled_ellipse(surface, x, y, rx, ry, color) -> None

    Draws a filled ellipse onto a surface. So the inside of the ellipse will be filled with the given color.

  `pygame.gfxdraw.``pie`()
    draw a pie
    pie(surface, x, y, r, start, end, color) -> None

    Draws a pie onto the surface.

  `pygame.gfxdraw.``trigon`()
    draw a triangle
    trigon(surface, x1, y1, x2, y2, x3, y3, color) -> None

    Draws the edges of a trigon onto a surface. A trigon is a triangle.

  `pygame.gfxdraw.``aatrigon`()
    draw an anti-aliased triangle
    aatrigon(surface, x1, y1, x2, y2, x3, y3, color) -> None

    Draws the anti aliased edges of a trigon onto a surface. A trigon is a triangle.

  `pygame.gfxdraw.``filled_trigon`()
    draw a filled trigon
    filled_trigon(surface, x1, y1, x2, y2, x3, y3, color) -> None

    Draws a filled trigon onto a surface. So the inside of the trigon will be filled with the given color.

  `pygame.gfxdraw.``polygon`()
    draw a polygon
    polygon(surface, points, color) -> None

    Draws the edges of a polygon onto a surface.

  `pygame.gfxdraw.``aapolygon`()
    draw an anti-aliased polygon
    aapolygon(surface, points, color) -> None

    Draws the anti aliased edges of a polygon onto a surface.

  `pygame.gfxdraw.``filled_polygon`()
    draw a filled polygon
    filled_polygon(surface, points, color) -> None

    Draws a filled polygon onto a surface. So the inside of the polygon will be filled with the given color.

  `pygame.gfxdraw.``textured_polygon`()
    draw a textured polygon
    textured_polygon(surface, points, texture, tx, ty) -> None

    Draws a textured polygon onto a surface.

    A per-pixel alpha texture blit to a per-pixel alpha surface will differ from a `Surface.blit()` blit. Also, a per-pixel alpha texture cannot be used with an 8-bit per pixel destination.

  `pygame.gfxdraw.``bezier`()
    draw a Bézier curve
    bezier(surface, points, steps, color) -> None

    Draws a Bézier curve onto a surface.