Cartesian math APIs

Cartesian math API . More...

Data Structures
struct	cartesian_point_2d
struct	cartesian_line_2d

Functions
bool	cartesian_line_intersection (struct cartesian_line_2d a, struct cartesian_line_2d b, struct cartesian_point_2d *intersection)
	Find the intersection point of two finite lines, if it exists.
bool	cartesian_point_in_circle (struct cartesian_point_2d point, struct cartesian_point_2d origin, uint32_t radius)
	Determine if a point in inside a circle.
bool	cartesian_point_in_polygon (struct cartesian_point_2d point, const struct cartesian_point_2d *polygon, size_t vertices)
	Determine if a point in inside an arbitrary polygon.
uint32_t	cartesian_distance_to_polygon_edge (struct cartesian_point_2d point, const struct cartesian_point_2d *polygon, size_t vertices)
	Determine the minimum distance to a polygons edge.

Detailed Description

Cartesian math API .

Function Documentation

cartesian_distance_to_polygon_edge()

uint32_t cartesian_distance_to_polygon_edge	(	struct cartesian_point_2d	point,
		const struct cartesian_point_2d *	polygon,
		size_t	vertices )

#include <infuse/math/cartesian.h>

Determine the minimum distance to a polygons edge.

Parameters

point	Point to test
polygon	Pointer to array of points defining the polygon (Do not duplicate first point)
vertices	Number of points in polygon array

Returns

uint32_t Distance to the nearest edge

cartesian_line_intersection()

bool cartesian_line_intersection	(	struct cartesian_line_2d	a,
		struct cartesian_line_2d	b,
		struct cartesian_point_2d *	intersection )

#include <infuse/math/cartesian.h>

Find the intersection point of two finite lines, if it exists.

Parameters

a	First finite line
b	Second finite line
intersection	Storage for intersection point

Returns

true If finite lines intersect

false If finite lines do not intersect, or are collinear

cartesian_point_in_circle()

bool cartesian_point_in_circle	(	struct cartesian_point_2d	point,
		struct cartesian_point_2d	origin,
		uint32_t	radius )

#include <infuse/math/cartesian.h>

Determine if a point in inside a circle.

Parameters

point	Point to test
origin	Centre point of circle
radius	Radius of circle

Returns

true If point is inside circle

false If point is outside of circle

cartesian_point_in_polygon()

bool cartesian_point_in_polygon	(	struct cartesian_point_2d	point,
		const struct cartesian_point_2d *	polygon,
		size_t	vertices )

#include <infuse/math/cartesian.h>

Determine if a point in inside an arbitrary polygon.

Parameters

point	Point to test
polygon	Pointer to array of points defining the polygon (Do not duplicate first point)
vertices	Number of points in polygon array

Returns

true If point is inside polygon

false If point is outside of polygon