83 lines
1.7 KiB
C++
83 lines
1.7 KiB
C++
/*
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* Vector2D.cpp
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*
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* Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "Vector2D.h"
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#include <cmath>
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namespace ZoomEdit {
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namespace Math {
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float Vector2D::lengthSq() const {
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return x*x + y*y;
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}
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float Vector2D::length() const {
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return std::sqrt(lengthSq());
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}
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Vector2D Vector2D::operator+(const Vector2D &v) const {
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return Vector2D(x + v.x, y + v.y);
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}
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Vector2D Vector2D::operator-(const Vector2D &v) const {
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return Vector2D(x - v.x, y - v.y);
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}
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float Vector2D::operator*(const Vector2D &v) const {
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return (x*v.x + y*v.y);
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}
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Vector2D Vector2D::operator*(float f) const {
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return Vector2D(x*f, y*f);
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}
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Vector2D Vector2D::operator/(float f) const {
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return Vector2D(x/f, y/f);
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}
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Vector2D& Vector2D::operator+=(const Vector2D &v) {
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x += v.x;
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y += v.y;
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return *this;
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}
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Vector2D& Vector2D::operator-=(const Vector2D &v) {
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x -= v.x;
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y -= v.y;
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return *this;
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}
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Vector2D& Vector2D::operator*=(float f) {
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x *= f;
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y *= f;
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return *this;
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}
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Vector2D& Vector2D::operator/=(float f) {
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x /= f;
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y /= f;
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return *this;
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}
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}
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}
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