62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
// file php_polygon.h
|
|
// See comments in php_polygon.cpp
|
|
|
|
#ifndef PHP_POLYGON_H
|
|
#define PHP_POLYGON_H
|
|
|
|
class vertex;
|
|
class segment;
|
|
|
|
#define infinity 100000000 // for places that are far far away
|
|
#define PI 3.14159265359
|
|
|
|
enum{ A_OR_B, A_AND_B, A_MINUS_B, B_MINUS_A };
|
|
|
|
class polygon
|
|
{
|
|
public:
|
|
/*------------------------------------------------------------------------------
|
|
** This class manages a doubly linked list of vertex objects that represents
|
|
** a polygon. The class consists of basic methods to manage the list
|
|
** and methods to implement boolean operations between polygon objects.
|
|
*/
|
|
|
|
vertex * m_first; // Reference to first vertex in the linked list
|
|
int m_cnt; // Tracks number of vertices in the polygon
|
|
|
|
polygon( vertex * first = NULL );
|
|
~polygon();
|
|
vertex * getFirst();
|
|
polygon * NextPoly();
|
|
|
|
void add( vertex * nv );
|
|
void addv( double x, double y,
|
|
double xc=0, double yc=0, int d=0);
|
|
vertex * del( vertex * v );
|
|
void res();
|
|
polygon * copy_poly();
|
|
void insertSort( vertex * nv, vertex * s, vertex * e );
|
|
vertex * nxt( vertex * v );
|
|
BOOL unckd_remain();
|
|
vertex * first_unckd_intersect();
|
|
double dist( double x1, double y1, double x2, double y2 );
|
|
double angle( double xc, double yc, double x1, double y1 );
|
|
double aAlpha( double x1, double y1, double x2, double y2,
|
|
double xc, double yc, double xi, double yi, double d );
|
|
void perturb( vertex * p1, vertex * p2, vertex * q1, vertex * q2,
|
|
double aP, double aQ );
|
|
BOOL ints( vertex * p1, vertex * p2, vertex * q1, vertex * q2,
|
|
int * n, double ix[], double iy[], double alphaP[], double alphaQ[] );
|
|
BOOL isInside ( vertex * v );
|
|
polygon * boolean( polygon * polyB, int oper );
|
|
#if 0
|
|
function isPolyInside (p);
|
|
function move (dx, dy);
|
|
function rotate (xr, yr, a);
|
|
function &bRect ();
|
|
#endif
|
|
}; //end of class polygon
|
|
|
|
|
|
#endif // ifndef PHP_POLYGON_H
|