#include "region.hh"
#include "worldfile.hh"
#include <algorithm>
#include <functional>

Include dependency graph for block.cc:

Functions
static radians_t	angle_change (point_t v1, point_t v2)
	util; How much was v1 rotated to get to v2? More...

static radians_t	angles_sum (vector< point_t > const &vs)

static void	canonicalize_winding (vector< point_t > &pts)

static vector< point_t >	find_vectors (vector< point_t > const &pts)
	util; find vectors between adjacent points, pts[next] - pts[cur] More...

static bool	is_canonical_winding (vector< point_t > const &ps)
	Util. More...

static void	pi_ize (radians_t &angle)
	util; puts angle into -pi/2, pi/2 More...

static void	positivize (radians_t &angle)
	util; puts angle into [0, 2pi) More...

void	swap (int &a, int &b)

Function Documentation

static radians_t angle_change	(	point_t	v1,
		point_t	v2
	)

static

util; How much was v1 rotated to get to v2?

Definition at line 448 of file block.cc.

static radians_t angles_sum ( vector< point_t > const & vs )

static

util; finds sum of angle changes, from each vertex to the next one (in current ordering), wrapping around.

Definition at line 480 of file block.cc.

static void canonicalize_winding ( vector< point_t > & ps )

static

util; sums angle changes to see whether it's 2pi or -2pi. 2pi is counter-clockwise winding (which OpenGL requires), -2pi is clockwise. Reverses <pts> when winding is clockwise.

Definition at line 510 of file block.cc.

static vector<point_t> find_vectors ( vector< point_t > const & pts )

static

util; find vectors between adjacent points, pts[next] - pts[cur]

Definition at line 464 of file block.cc.

static bool is_canonical_winding ( vector< point_t > const & ps )

static

Util.

Definition at line 493 of file block.cc.

static void pi_ize ( radians_t & angle )

static

util; puts angle into -pi/2, pi/2

Definition at line 440 of file block.cc.

static void positivize ( radians_t & angle )

static

util; puts angle into [0, 2pi)

Definition at line 433 of file block.cc.

void swap	(	int &	a,
		int &	b
	)

Definition at line 255 of file block.cc.

Functions

Function Documentation