/// <summary> Initializes a new instance of the <see cref="Rectangle2d"/> class with predefined bounds. </summary>
/// <param name="x"> Minimum x value (left). </param>
/// <param name="y"> Minimum y value (bottom). </param>
/// <param name="width"> Width of the rectangle. </param>
/// <param name="height"> Height of the rectangle. </param>
public Rectangle2d(double x, double y, double width, double height)
{
_xmin = x;
_ymin = y;
_xmax = x + width;
_ymax = y + height;
_left = new LineLinear2d(new Vector2d(_xmin, _ymin), new Vector2d(_xmin, _ymax));
_right = new LineLinear2d(new Vector2d(_xmax, _ymin), new Vector2d(_xmax, _ymax));
_bottom = new LineLinear2d(new Vector2d(_xmin, _ymin), new Vector2d(_xmax, _ymin));
_top = new LineLinear2d(new Vector2d(_xmin, _ymax), new Vector2d(_xmax, _ymax));
}
public static Vector2d Collide(LineParametric2d ray, LineLinear2d line, double epsilon)
{
var collide = LineLinear2d.Collide(ray.CreateLinearForm(), line);
if (collide.Equals(Vector2d.Empty))
{
return(Vector2d.Empty);
}
var collideVector = collide - ray.A;
return(ray.U.Dot(collideVector) < epsilon ? Vector2d.Empty : collide);
}
/// <summary> Collision point of two lines. </summary>
public static Vector2d Collide(LineLinear2d pLine1, LineLinear2d pLine2)
{
return(Collide(pLine1.A, pLine1.B, pLine1.C, pLine2.A, pLine2.B, pLine2.C));
}
/// <summary> Collision point of two lines. </summary>
/// <param name="pLine">Line to collision.</param>
/// <returns>Collision point.</returns>
public Vector2d Collide(LineLinear2d pLine)
{
return(Collide(this, pLine));
}