Drawables

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Drawables are a type of Component that allows you to perform an action during each Draw/Render cycle of the Application. A Drawable is associated with an Entity, and all Drawables in a scene are managed by RenderManager.

Drawable3D

Drawable3Ds are a type of Drawable designed to provide 3D content. They are processed on every Camera3D render. In these components, you usually create graphic elements to draw 3D features (models, billboards, background environments, etc...).

Add the following property:

Property	Description
CastShadows	Boolean value indicating whether this model will cast shadows. True by default.

Creating a Drawable3D

From Visual Studio, you can create a C# class with the following code:

using Evergine.Common.Graphics;
using Evergine.Framework;
using Evergine.Framework.Graphics;
using Evergine.Mathematics;
using System;

namespace MyProject
{
    public class BBoxDrawable : Drawable3D
    {
        [BindComponent]
        private Transform3D transform;

        public Vector3 Size {get;set;} = Vector3.One;
        public Color Color {get; set;} = Color.Red;

        public override void Draw(DrawContext drawContext)
        {
            var orientedBBox = new BoundingOrientedBox(
                this.transform.Position, 
                this.Size, 
                this.transform.Orientation);

            // Draw an oriented bounding box with the specified color and size...
            this.Managers.RenderManager.LineBatch3D.DrawBoundingOrientedBox(orientedBBox, this.Color);
        }
    }
}

Graphics Content

A Drawable will add objects to the RenderManager to be drawn (sprites, meshes, etc...). Read the Render Overview document for further details.

Add/Remove a Drawable

To add/remove a Drawable to/from your entity, both from code or Evergine Studio, is the same as adding/removing a component because a Drawable is a type of component. You can see how to add/remove a component here.