public avector cross_product(avector other)
{
this.x = this.y * other.z - this.z * other.y;
this.y = this.z * other.x - this.x * other.y;
this.z = this.x * other.y - this.y * other.x;
return(this);
}
public avector sub(avector other)
{
this.x = this.x - other.x;
this.y = this.y - other.y;
this.z = this.z - other.z;
return(this);
}
public avector add(avector other)
{
this.x = this.x + other.x;
this.y = this.y + other.y;
this.z = this.z + other.z;
return(this);
}
public double dot_product(avector other)
{
return(this.x * other.x + this.y * other.y + this.z * other.z);
}
