Is it possible to prevent the collider 2D outline from hiding in Unity?

Question

Is it possible to prevent the collider 2D outline from hiding in Unity?

I am creating some animations in Unity. To create animations I select different parts of a hero and move them frame by frame. Now I am working on the run animation and would like to see the bottom collider during parts movement for the animation creation.

In my case the collider outline is red:

I don't want the red bottom line (which is the collider outline) to disappear while I am creating animations. Should I research the Unity extensions and maybe write my own which would prevent the collider from hiding or is it possible to achieve what I want out of the box somehow?

Answer 1

You can add a script that draws a gizmo along this line. Here's an example:

public class ColliderVisualizer : MonoBehaviour {

    public EdgeCollider2D edge;
    public Color32 color = new Color32(255, 0, 0, 255);

    public void OnDrawGizmos() {

        if (edge == null) return;

        Gizmos.color = color;

        var points = edge.points;

        Vector3 previous = transform.TransformPoint(points[0] + edge.offset);

        for(int i = 1; i < points.Length; i++) {
            Vector3 next = transform.TransformPoint(points[i] + edge.offset);
            Gizmos.DrawLine(previous, next);
            previous = next;
        }

    }
}

Place this on your object, and assign the edge collider to the edge field in the Inspector. Then it will continue drawing the edges in the edge collider whether or not the object is selected.

You can modify this script to work with other types of collider if you need - I was just guessing that yours is an edge collider based on the example image.