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/*************************************************************************
* Copyright (c) 2011 AT&T Intellectual Property
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-v10.html
*
* Contributors: Details at https://graphviz.org
*************************************************************************/
#pragma once
#include <stddef.h>
#include <util/api.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef HAVE_POINTF_S
typedef pointf Point;
#else
typedef struct Point {
double x, y;
} Point;
#endif
extern double xmin, xmax, ymin, ymax; /* extreme x,y values of sites */
extern double deltax; // xmax - xmin
extern size_t nsites; // Number of sites
extern int sqrt_nsites;
PRIVATE void geominit(void);
PRIVATE double dist_2(Point, Point); ///< distance squared between two points
PRIVATE void subpt(Point * a, Point b, Point c);
PRIVATE void addpt(Point * a, Point b, Point c);
PRIVATE double area_2(Point a, Point b, Point c);
PRIVATE int leftOf(Point a, Point b, Point c);
PRIVATE int intersection(Point a, Point b, Point c, Point d, Point * p);
#ifdef __cplusplus
}
#endif
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