box2d.h

#include <modkit/box2d.h>3 functions · 1 structs · 1 typedefs

Optional Box2D 3.1.1 interpolation and Canvas debug-draw bridge.

Functions

mk_box2d_debug_drawfunction

bool mk_box2d_debug_draw(b2WorldId world, mk_canvas_t canvas, float screen_scale, const mk_box2d_debug_draw_desc *desc)

Draw authoritative Box2D state into an already-active Canvas.

Parameter	Type	Description
world	b2WorldId	Value for world.
canvas	mk_canvas_t	Value for canvas.
screen_scale	float	Value for screen scale.
desc	const mk_box2d_debug_draw_desc *	Configuration descriptor.

Returns True when the operation succeeds.

mk_box2d_debug_draw_desc_defaultfunction

mk_box2d_debug_draw_desc mk_box2d_debug_draw_desc_default(void)

Draw desc default for the box2d debug.

Returns The resulting value.

mk_box2d_transform_lerpfunction

b2Transform mk_box2d_transform_lerp(b2Transform previous, b2Transform current, float alpha)

Interpolate a Box2D transform for rendering.

Parameter	Type	Description
previous	b2Transform	Value for previous.
current	b2Transform	Value for current.
alpha	float	Value for alpha.

Returns The resulting value.

Structs

mk_box2d_debug_draw_descstruct

Data for box2d debug draw desc.

Field	Type	Description
line_width_px	float	The line width px.
fill_alpha	float	The fill alpha.
draw_shapes	bool	The draw shapes.
draw_joints	bool	The draw joints.
draw_joint_extras	bool	The draw joint extras.
draw_bounds	bool	The draw bounds.
draw_mass	bool	The draw mass.
draw_body_names	bool	The draw body names.
draw_contacts	bool	The draw contacts.
draw_graph_colors	bool	The draw graph colors.
draw_contact_normals	bool	The draw contact normals.
draw_contact_impulses	bool	The draw contact impulses.
draw_contact_features	bool	The draw contact features.
draw_friction_impulses	bool	The draw friction impulses.
draw_islands	bool	The draw islands.

Typedefs

mk_box2d_debug_draw_desctypedef

typedef struct mk_box2d_debug_draw_desc mk_box2d_debug_draw_desc

Data for box2d debug draw desc.