//********************************** Banshee Engine (www.banshee3d.com) **************************************************//
//**************** Copyright (c) 2016 Marko Pintera (marko.pintera@gmail.com). All rights reserved. **********************//
using bs;

namespace bs.Editor
{
    /** @addtogroup Gizmos
     *  @{
     */

    /// <summary>
    /// Handles drawing of gizmos for the <see cref="Animation"/> component.
    /// </summary>
    internal class AnimationGizmo
    {
        /// <summary>
        /// Method called by the runtime when gizmos are meant to be drawn.
        /// </summary>
        /// <param name="animation">Animation component to draw gizmo for.</param>
        [DrawGizmo(DrawGizmoFlags.Selected | DrawGizmoFlags.ParentSelected)]
        private static void DrawGizmo(Animation animation)
        {
            SceneObject so = animation.SceneObject;

            Gizmos.Color = Color.Green;
            Gizmos.Transform = Matrix4.Identity;

            AABox bounds = new AABox();

            bool useAnimBounds = animation.UseBounds;
            if (!useAnimBounds)
            {
                Renderable renderable = so.GetComponent<Renderable>();

                if (renderable != null)
                    bounds = renderable.Bounds.Box;
                else
                    useAnimBounds = true;
            }

            if (useAnimBounds)
            {
                bounds = animation.Bounds;
                bounds.TransformAffine(so.WorldTransform);
            }

            Gizmos.DrawWireCube(bounds.Center, bounds.Size * 0.5f);
        }
    }

    /** @} */
}