Position.h (3036B)
1 /* GRAPHITE2 LICENSING 2 3 Copyright 2010, SIL International 4 All rights reserved. 5 6 This library is free software; you can redistribute it and/or modify 7 it under the terms of the GNU Lesser General Public License as published 8 by the Free Software Foundation; either version 2.1 of License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should also have received a copy of the GNU Lesser General Public 17 License along with this library in the file named "LICENSE". 18 If not, write to the Free Software Foundation, 51 Franklin Street, 19 Suite 500, Boston, MA 02110-1335, USA or visit their web page on the 20 internet at http://www.fsf.org/licenses/lgpl.html. 21 22 Alternatively, the contents of this file may be used under the terms of the 23 Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public 24 License, as published by the Free Software Foundation, either version 2 25 of the License or (at your option) any later version. 26 */ 27 #pragma once 28 29 namespace graphite2 { 30 31 class Position 32 { 33 public: 34 Position() : x(0), y(0) { } 35 Position(const float inx, const float iny) : x(inx), y(iny) {} 36 Position operator + (const Position& a) const { return Position(x + a.x, y + a.y); } 37 Position operator - (const Position& a) const { return Position(x - a.x, y - a.y); } 38 Position operator * (const float m) const { return Position(x * m, y * m); } 39 Position &operator += (const Position &a) { x += a.x; y += a.y; return *this; } 40 Position &operator *= (const float m) { x *= m; y *= m; return *this; } 41 42 float x; 43 float y; 44 }; 45 46 class Rect 47 { 48 public : 49 Rect() {} 50 Rect(const Position& botLeft, const Position& topRight): bl(botLeft), tr(topRight) {} 51 Rect widen(const Rect& other) { return Rect(Position(bl.x > other.bl.x ? other.bl.x : bl.x, bl.y > other.bl.y ? other.bl.y : bl.y), Position(tr.x > other.tr.x ? tr.x : other.tr.x, tr.y > other.tr.y ? tr.y : other.tr.y)); } 52 Rect operator + (const Position &a) const { return Rect(Position(bl.x + a.x, bl.y + a.y), Position(tr.x + a.x, tr.y + a.y)); } 53 Rect operator - (const Position &a) const { return Rect(Position(bl.x - a.x, bl.y - a.y), Position(tr.x - a.x, tr.y - a.y)); } 54 Rect operator * (float m) const { return Rect(Position(bl.x, bl.y) * m, Position(tr.x, tr.y) * m); } 55 float width() const { return tr.x - bl.x; } 56 float height() const { return tr.y - bl.y; } 57 58 bool hitTest(Rect &other); 59 60 // returns Position(overlapx, overlapy) where overlap<0 if overlapping else positive) 61 Position overlap(Position &offset, Rect &other, Position &otherOffset); 62 //Position constrainedAvoid(Position &offset, Rect &box, Rect &sdbox, Position &other, Rect &obox, Rect &osdbox); 63 64 Position bl; 65 Position tr; 66 }; 67 68 } // namespace graphite2