ImmediateModeShapeDrawer Sample Not Drawing

michael ferron

2 days ago
updated 2 days ago

Hello!

Attempting to try out Shapes and I am unable to get ImmediateMode working correctly. Here are my steps:

1. Created a fresh Unity "Universal 2D" project
2. Installed Shapes 4.5.1
3. Create empty GameObject and attach ImmediateModeShapeDrawer script from example https://acegikmo.com/shapes/docs/#immediate-mode

No lines appear in the scene or game view, and no console errors appear. If I add a Debug.Log into the body of the `DrawShapes` method, it is never logged to the console. The GameObject is active.

If I modify the example script to be a MonoBehavior and use `OnRenderObject`, I can see the lines in the Scene View, but not Game View when running.

[ExecuteAlways]
public class ShapesDebug : MonoBehaviour
{
    void OnRenderObject()
    {
        // set up static parameters. these are used for all following Draw.Line calls
        Draw.LineGeometry = LineGeometry.Volumetric3D;
        Draw.ThicknessSpace = ThicknessSpace.Pixels;
        Draw.Thickness = 4; // 4px wide

        // set static parameter to draw in the local space of this object
        Draw.Matrix = transform.localToWorldMatrix;

        // draw lines
        Draw.Line(Vector3.zero, Vector3.right, Color.red);
        Draw.Line(Vector3.zero, Vector3.up, Color.green);
        Draw.Line(Vector3.zero, Vector3.forward, Color.blue);

    }
}

Hopefully I'm just missing something simple here. Thanks in advance!

Reporting a bug? please specify Unity version:

6000.2.13f1

Reporting a bug? please specify Shapes version:

4.5.1

Reporting a bug? please specify Render Pipeline:

Built-in render pipeline

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Freya Holmér creator

2 days ago

You need to inherit from ImmediateModeShapeDrawer in your script, as the example does!

Reply Link

Thank you for the quick reply!

Apologies for not being clearer in my post -- the code snippet I shared is after having modified the example. That code snippet displays the lines in scene view, but not in the game view.

Here is the example script I am attaching to my gameobject, taken from the example, that does not render:


using UnityEngine;
using Shapes;

[ExecuteAlways]
public class MyScript : ImmediateModeShapeDrawer
{

    public override void DrawShapes(Camera cam)
    {

        using (Draw.Command(cam))
        {

            // set up static parameters. these are used for all following Draw.Line calls
            Draw.LineGeometry = LineGeometry.Volumetric3D;
            Draw.ThicknessSpace = ThicknessSpace.Pixels;
            Draw.Thickness = 4; // 4px wide

            // set static parameter to draw in the local space of this object
            Draw.Matrix = transform.localToWorldMatrix;

            // draw lines
            Draw.Line(Vector3.zero, Vector3.right, Color.red);
            Draw.Line(Vector3.zero, Vector3.up, Color.green);
            Draw.Line(Vector3.zero, Vector3.forward, Color.blue);
        }

    }

}