/* winnie - an experimental window system Copyright (C) 2013 Eleni Maria Stea This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . Author: Eleni Maria Stea */ #include "geom.h" Rect::Rect() { x = y = width = height = 0; } Rect::Rect(int x, int y, int w, int h) { this->x = x; this->y = y; width = w; height = h; } static inline int min(int x, int y) { return x < y ? x : y; } static inline int max(int x, int y) { return x > y ? x : y; } Rect rect_union(const Rect &a, const Rect &b) { Rect uni; uni.x = min(a.x, b.x); uni.y = min(a.y, b.y); uni.width = max(a.x + a.width, b.x + b.width) - uni.x; uni.height = max(a.y + a.height, b.y + b.height) - uni.y; return uni; } Rect rect_intersection(const Rect &a, const Rect &b) { Rect intersect; intersect.x = max(a.x, b.x); intersect.y = max(a.y, b.y); intersect.width = max(min(a.x + a.width, b.x + b.width) - intersect.x, 0); intersect.height = max(min(a.y + a.height, b.y + b.height) - intersect.y, 0); return intersect; }