Smoll/Expansion1/RectangleGizmoComponent.cs

using System.Numerics;
using Raylib_cs;

namespace Smoll.Ex1 {
    class RectangleGizmoComponent : Smoll.Component {
        Complex size;
        Color color;
        Transform2DComponent? ownerTransform;

        public RectangleGizmoComponent(int width, int height, Color color)
        {
            this.size = width + Complex.ImaginaryOne*height;
            this.color = color;
        }

        public override void OnAttached() {
            ownerTransform = owner.GetComponent<Transform2DComponent>();
        }

        public override void Draw(Smoll.Layer.DrawMode drawMode) {
            ownerTransform ??= owner.GetComponent<Transform2DComponent>();
            ownerTransform ??= new Transform2DComponent();
            var tr = ownerTransform.AbsoluteTransform();
            Raylib.DrawRectanglePro(
                new Rectangle(
                    (float)tr.position.Real, 
                    (float)tr.position.Imaginary, 
                    (float)(size.Real*tr.scale), 
                    (float)(size.Imaginary*tr.scale)
                ),
                new Vector2(
                    (float)(0),
                    (float)(0)
                ),
                tr.angle*180f/MathF.PI,
                color
            );
        }
    }
}