Vector3 : Vector « Game « Android

1. Android
2. Game
3. Vector

Vector3

 
//package dkgles.math;

import org.xml.sax.Attributes;

import android.util.FloatMath;

class Vector3 implements Cloneable
{
  public float x;
  public float y;
  public float z;
  
  public Vector3()
  {
    x = 0.0f;
    y = 0.0f;
    z = 0.0f;
  }
  
  
  public Vector3(float x, float y, float z)
  {
    this.x = x;
    this.y = y;
    this.z = z;  
  }
  
  public Vector3 add(Vector3 rhs)
  {
    return new Vector3(
        this.x + rhs.x, this.y + rhs.y, this.z + rhs.z);
  }
  
  public Vector3 sub(Vector3 rhs)
  {
    return new Vector3(
        this.x - rhs.x, this.y - rhs.y, this.z - rhs.z);
  }
  
  public void subFromSelf(Vector3 rhs)
  {
    x -= rhs.x;
    y -= rhs.y;
    x -= rhs.z;
  }
  
  public void normalize()
  {
    float l = length();
    
    x /= l;
    y /= l;
    z /= l;
  }
  
  public float length()
  {
    return FloatMath.sqrt(x*x + y*y + z*z);
  }
  
  
  public Vector3 mul(float fScaler)
  {
    return new Vector3(
        x*fScaler, y*fScaler, z*fScaler);
  }
  
  public void copy(Vector3 rhs)
  {
    x = rhs.x;
    y = rhs.y;
    z = rhs.z;
  }
  
  
  public void mulSelf(float fScaler)
  {
    x *= fScaler;
    y *= fScaler;
    z *= fScaler;
  }
  
  
  public Vector3 crossProduct(Vector3 rhs)
  {
    return new Vector3(
      y*rhs.z - z*rhs.y,
      z*rhs.x - x*rhs.z,
            x*rhs.y - y*rhs.x);
  }
  
  public float dot(Vector3 rhs)
  {
    return x*rhs.x + y*rhs.y + z*rhs.z;
  }
  
  public Object clone() 
  {
    return new Vector3(x, y, z);
  }
  
  
  public String toString()
  {
    StringBuilder result = new StringBuilder();
    result.append("(" + x + ", " + y + ", " + z + ")" );
    return result.toString();
  }
  
  
  
  
}

   
  

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