Android Open Source - ShootEmOff Vector F

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From Project

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License

The source code is released under:

Copyright (c) 2011 Andrey Moiseev, http://o2genum.ru Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),...

Java Source Code

package com.shootemoff.game;
//from   ww  w .  j  a v  a 2 s .  c  o  m
import android.graphics.PointF;
import android.util.Log;

public class VectorF extends PointF
{
  public VectorF(float x, float y)
  {
    super(x, y);
  }
  // Not modifying methods. Bad for GC.
  public VectorF add(VectorF vector)
  {
    return new VectorF(this.x + vector.x, this.y + vector.y);
  }

  public VectorF multiply(float factor)
  {
    return new VectorF(this.x * factor, this.y * factor);
  }

  public VectorF divide(float factor)
  {
    return multiply(1.0F / factor);
  }

  public VectorF subtract(VectorF vector)
  {
    return new VectorF(this.x - vector.x, this.y - vector.y);
  }
  // These methods modify vector. Good for GC.
  public void multiplyThis(float factor)
  {
    this.x *= factor;
    this.y *= factor;
  }

  public void divideThis(float factor)
  {
    multiplyThis(1.0F / factor);
  }

  public void addToThis(VectorF vector)
  {
    this.x += vector.x;
    this.y += vector.y;
  }

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

  public void subtractFromThis(VectorF vector)
  {
    this.x -= vector.x;
    this.y -= vector.y;
  }
  
  public void subtractFromThis(float x, float y)
  {
    this.x -= x;
    this.y -= y;
  }
}

Java Source Code List

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