# `pymunk.matplotlib_util` Module

This submodule contains helper functions to help with quick prototyping using pymunk together with pyglet.

Intended to help with debugging and prototyping, not for actual production use in a full application. The methods contained in this module is opinionated about your coordinate system and not very optimized (they use batched drawing, but there is probably room for optimizations still).

class `pymunk.matplotlib_util.``DrawOptions`(ax)

  Bases: `pymunk.space_debug_draw_options.SpaceDebugDrawOptions`

  `DRAW_COLLISION_POINTS`

    alias of `CP_SPACE_DEBUG_DRAW_COLLISION_POINTS`

  `DRAW_CONSTRAINTS`

    alias of `CP_SPACE_DEBUG_DRAW_CONSTRAINTS`

  `DRAW_SHAPES`

    alias of `CP_SPACE_DEBUG_DRAW_SHAPES`

  `__init__`(ax)

    DrawOptions for space.debug_draw() to draw a space on a ax object.

    Typical usage:

        >>> import matplotlib as mpl
        >>> import pymunk
        >>> import pymunk.matplotlib_util
        >>> my_space = pymunk.Space()
        >>> fix, ax = mpl.subplot()
        >>> options = pymunk.matplotlib_util.DrawOptions(ax)
        >>> my_space.debug_draw(options)

    You can control the color of a Shape by setting shape.color to the color you want it drawn in.

        >>> my_shape.color = (1, 0, 0, 1) # will draw my_shape in red

    See matplotlib_util.demo.py for a full example

    Param
      ax: matplotlib.Axes

        A matplotlib Axes object.

  `collision_point_color`

    The color of collisions.

    Should be a tuple of 4 ints between 0 and 255 (r,g,b,a).

    Example:

        >>> import pymunk
        >>> s = pymunk.Space()
        >>> b = pymunk.Body(1,10)
        >>> c1 = pymunk.Circle(b, 10)
        >>> c2 = pymunk.Circle(s.static_body, 10)
        >>> s.add(b, c1, c2)
        >>> s.step(1)
        >>> options = pymunk.SpaceDebugDrawOptions()
        >>> s.debug_draw(options)
        draw_circle (Vec2d(0.0, 0.0), 0.0, 10.0, SpaceDebugColor(r=44.0, g=62.0, b=80.0, a=255.0), SpaceDebugColor(r=52.0, g=152.0, b=219.0, a=255.0))
        draw_circle (Vec2d(0.0, 0.0), 0.0, 10.0, SpaceDebugColor(r=44.0, g=62.0, b=80.0, a=255.0), SpaceDebugColor(r=149.0, g=165.0, b=166.0, a=255.0))
        draw_segment (Vec2d(8.0, 0.0), Vec2d(-8.0, 0.0), SpaceDebugColor(r=231.0, g=76.0, b=60.0, a=255.0))
        >>> options.collision_point_color = (10,20,30,40)
        >>> s.debug_draw(options)
        draw_circle (Vec2d(0.0, 0.0), 0.0, 10.0, SpaceDebugColor(r=44.0, g=62.0, b=80.0, a=255.0), SpaceDebugColor(r=52.0, g=152.0, b=219.0, a=255.0))
        draw_circle (Vec2d(0.0, 0.0), 0.0, 10.0, SpaceDebugColor(r=44.0, g=62.0, b=80.0, a=255.0), SpaceDebugColor(r=149.0, g=165.0, b=166.0, a=255.0))
        draw_segment (Vec2d(8.0, 0.0), Vec2d(-8.0, 0.0), SpaceDebugColor(r=10.0, g=20.0, b=30.0, a=40.0))

  `color_for_shape`(shape)
  `constraint_color`

    The color of constraints.

    Should be a tuple of 4 ints between 0 and 255 (r,g,b,a).

    Example:

        >>> import pymunk
        >>> s = pymunk.Space()
        >>> j = pymunk.PivotJoint(s.static_body, s.static_body, (0,0))
        >>> s.add(j)
        >>> options = pymunk.SpaceDebugDrawOptions()
        >>> s.debug_draw(options)
        draw_dot (5.0, Vec2d(0.0, 0.0), SpaceDebugColor(r=142.0, g=68.0, b=173.0, a=255.0))
        draw_dot (5.0, Vec2d(0.0, 0.0), SpaceDebugColor(r=142.0, g=68.0, b=173.0, a=255.0))
        >>> options.constraint_color = (10,20,30,40)
        >>> s.debug_draw(options)
        draw_dot (5.0, Vec2d(0.0, 0.0), SpaceDebugColor(r=10.0, g=20.0, b=30.0, a=40.0))
        draw_dot (5.0, Vec2d(0.0, 0.0), SpaceDebugColor(r=10.0, g=20.0, b=30.0, a=40.0))

  `draw_circle`(pos, angle, radius, outline_color, fill_color)
  `draw_dot`(size, pos, color)
  `draw_fat_segment`(a, b, radius, outline_color, fill_color)
  `draw_polygon`(verts, radius, outline_color, fill_color)
  `draw_segment`(a, b, color)
  `flags`

    Bit flags which of shapes, joints and collisions should be drawn.

    By default all 3 flags are set, meaning shapes, joints and collisions will be drawn.

    Example using the basic text only DebugDraw implementation (normally you would the desired backend instead, such as pygame_util.DrawOptions or pyglet_util.DrawOptions):

        >>> import pymunk
        >>> s = pymunk.Space()
        >>> b = pymunk.Body()
        >>> c = pymunk.Circle(b, 10)
        >>> c.mass = 3
        >>> s.add(b, c)
        >>> s.add(pymunk.Circle(s.static_body, 3))
        >>> s.step(0.01)
        >>> options = pymunk.SpaceDebugDrawOptions()

        >>> # Only draw the shapes, nothing else:
        >>> options.flags = pymunk.SpaceDebugDrawOptions.DRAW_SHAPES
        >>> s.debug_draw(options)
        draw_circle (Vec2d(0.0, 0.0), 0.0, 10.0, SpaceDebugColor(r=44.0, g=62.0, b=80.0, a=255.0), SpaceDebugColor(r=52.0, g=152.0, b=219.0, a=255.0))
        draw_circle (Vec2d(0.0, 0.0), 0.0, 3.0, SpaceDebugColor(r=44.0, g=62.0, b=80.0, a=255.0), SpaceDebugColor(r=149.0, g=165.0, b=166.0, a=255.0))

        >>> # Draw the shapes and collision points:
        >>> options.flags = pymunk.SpaceDebugDrawOptions.DRAW_SHAPES
        >>> options.flags |= pymunk.SpaceDebugDrawOptions.DRAW_COLLISION_POINTS
        >>> s.debug_draw(options)
        draw_circle (Vec2d(0.0, 0.0), 0.0, 10.0, SpaceDebugColor(r=44.0, g=62.0, b=80.0, a=255.0), SpaceDebugColor(r=52.0, g=152.0, b=219.0, a=255.0))
        draw_circle (Vec2d(0.0, 0.0), 0.0, 3.0, SpaceDebugColor(r=44.0, g=62.0, b=80.0, a=255.0), SpaceDebugColor(r=149.0, g=165.0, b=166.0, a=255.0))
        draw_segment (Vec2d(1.0, 0.0), Vec2d(-8.0, 0.0), SpaceDebugColor(r=231.0, g=76.0, b=60.0, a=255.0))

  `shape_dynamic_color` = SpaceDebugColor(r=52, g=152, b=219, a=255)
  `shape_kinematic_color` = SpaceDebugColor(r=39, g=174, b=96, a=255)
  `shape_outline_color`

    The outline color of shapes.

    Should be a tuple of 4 ints between 0 and 255 (r,g,b,a).

    Example:

        >>> import pymunk
        >>> s = pymunk.Space()
        >>> c = pymunk.Circle(s.static_body, 10)
        >>> s.add(c)
        >>> options = pymunk.SpaceDebugDrawOptions()
        >>> s.debug_draw(options)
        draw_circle (Vec2d(0.0, 0.0), 0.0, 10.0, SpaceDebugColor(r=44.0, g=62.0, b=80.0, a=255.0), SpaceDebugColor(r=149.0, g=165.0, b=166.0, a=255.0))
        >>> options.shape_outline_color = (10,20,30,40)
        >>> s.debug_draw(options)
        draw_circle (Vec2d(0.0, 0.0), 0.0, 10.0, SpaceDebugColor(r=10.0, g=20.0, b=30.0, a=40.0), SpaceDebugColor(r=149.0, g=165.0, b=166.0, a=255.0))

  `shape_sleeping_color` = SpaceDebugColor(r=114, g=148, b=168, a=255)
  `shape_static_color` = SpaceDebugColor(r=149, g=165, b=166, a=255)