ScreenLine.java :  » UnTagged » tesis-ar » org » mixare » gui » Android Open Source

/*
 * Copyright (C) 2010- Peer internet solutions
 * 
 * This file is part of mixare.
 * 
 * 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 <http://www.gnu.org/licenses/>
 */
package org.mixare.gui;

public class ScreenLine {
  public float x, y;

  public ScreenLine() {
    set(0, 0);
  }

  public ScreenLine(float x, float y) {
    set(x, y);
  }

  public void set(float x, float y) {
    this.x = x;
    this.y = y;
  }

  public void rotate(double t) {
    float xp = (float) Math.cos(t) * x - (float) Math.sin(t) * y;
    float yp = (float) Math.sin(t) * x + (float) Math.cos(t) * y;

    x = xp;
    y = yp;
  }

  public void add(float x, float y) {
    this.x += x;
    this.y += y;
  }
}