nav_grid_iterators Namespace Reference

Classes
class	AbstractLineIterator
	Abstract class for iterating over lines. More...
class	BaseIterator
class	Bresenham
	Line Iterator using Bresenham's algorithm (no subpixel precision) More...
class	CircleFill
	Iterates over all of the valid indexes that lie within a circle in row major order. More...
class	CircleOutline
	Iterates over the valid indexes that lie on the outline of a circle. More...
class	Line
	Iterates over all of the valid indexes of a line. More...
class	PolygonFill
	Iterates over all of the valid indexes that lie within an arbitrary polygon in row major order. More...
class	PolygonOutline
	Iterates over all of the valid indexes on the outline of a polygon. More...
class	RayTrace
	Line Iterator with Ray Tracing (subpixel accuracy) More...
class	Spiral
	Iterates over all of the valid indexes that lie within a circle from the center out. More...
class	SubGrid
	Iterator for looping through every index within an aligned rectangular portion of the grid. More...
class	WholeGrid
Functions
int	signum (const int val)
	returns the sign of a number

---

Function Documentation

int nav_grid_iterators::signum

(

const int

val

)

[inline]

returns the sign of a number

Parameters:

val

number

Returns:

1 if positive, 0 if 0, -1 if negative

Definition at line 48 of file circle_outline.h.