public static capex.util.Vector2 multiplyVector(capex.util.Matrix33 a, capex.util.Vector2 b)
{
var x = a.v[0] * b.x + a.v[1] * b.y + a.v[2] * 1.00;
var y = a.v[3] * b.x + a.v[4] * b.y + a.v[5] * 1.00;
return(capex.util.Vector2.create(x, y));
}
public static capex.util.Vector2 create(double x, double y)
{
var v = new capex.util.Vector2();
v.x = x;
v.y = y;
return(v);
}
public double distance(capex.util.Vector2 b)
{
var dist = (y - b.y) * (y - b.y) + (x - b.x) * (x - b.x);
return(cape.Math.sqrt(dist));
}
public capex.util.Vector2 multiply(capex.util.Vector2 b)
{
x *= b.x;
y *= b.y;
return(this);
}
public capex.util.Vector2 subtract(capex.util.Vector2 b)
{
x -= b.x;
y -= b.y;
return(this);
}
public capex.util.Vector2 add(capex.util.Vector2 b)
{
x += b.x;
y += b.y;
return(this);
}