bbox.h
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- /*
- * Copyright (c) 1991,1993 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the Computer Systems
- * Engineering Group at Lawrence Berkeley Laboratory.
- * 4. Neither the name of the University nor of the Laboratory may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#) $Header: /cvsroot/nsnam/nam-1/bbox.h,v 1.3 2001/02/23 05:56:50 mehringe Exp $ (LBL)
- */
- #ifndef nam_bbox_h
- #define nam_bbox_h
- #include <X11/Xlib.h>
- #include <float.h>
- struct BBox {
- float xmin, ymin;
- float xmax, ymax;
- float width() const { return xmax - xmin; }
- float height() const { return ymax - ymin; }
- inline void xrect(XRectangle &r) {
- r.x = (int)xmin, r.y = (int)ymin;
- r.width = (int)(xmax - xmin);
- r.height = (int)(ymax - ymin);
- }
- inline int overlap(const BBox& b) const {
- return !((b.xmin >= xmax) || (b.xmax <= xmin) ||
- (b.ymin >= ymax) || (b.ymax <= ymin));
- }
- inline int inside(const BBox &b) const {
- return (inside(b.xmin, b.ymin) && inside(b.xmax, b.ymax));
- }
- inline int inside(float x, float y,
- float xhalo = 0, float yhalo = 0) const {
- return ((x >= xmin - xhalo) && (x <= xmax + xhalo) &&
- (y >= ymin - yhalo) && (y <= ymax + yhalo));
- }
- inline void clear() {
- xmin = ymin = FLT_MAX;
- xmax = ymax = -FLT_MAX;
- }
- inline void move(float dx, float dy) {
- xmin += dx, xmax += dx;
- ymin += dy, ymax += dy;
- }
- inline void merge(const BBox &b) {
- if (xmin > b.xmin)
- xmin = b.xmin;
- if (ymin > b.ymin)
- ymin = b.ymin;
- if (xmax < b.xmax)
- xmax = b.xmax;
- if (ymax < b.ymax)
- ymax = b.ymax;
- }
- inline void adjust() {
- float tmp;
- if (xmin > xmax)
- tmp = xmax, xmax = xmin, xmin = tmp;
- if (ymin > ymax)
- tmp = ymax, ymax = ymin, ymin = tmp;
- }
- inline void copy(BBox & destination) {
- destination.xmin = xmin;
- destination.ymin = ymin;
- destination.xmax = xmax;
- destination.ymax = ymax;
- }
- };
- #endif