How to query objects that bypass the scene system

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How to query objects that bypass the scene system

ning_xue

I followed the tutorial here to bypass the scene system to visualize the object, but how can I query the object by clicking

ning_xue

The instances_cull_ray function cannot query the object.

cybereality

What are you trying to do and what did you draw? Can you explain a bit more, because it is hard to answer your question without more information.

ning_xue

        var arr = new object[(int)Mesh.ArrayType.Max];
        Vector3[] vertexs = new Vector3[]{
            new Vector3(-1, -1, 0),
            new Vector3(1, -1, 0),
            new Vector3(1, 1, 0)
        };

        int[] index = new int[]{
            0, 1, 2
        };
        arr[(int)Mesh.ArrayType.Vertex] = vertexs;
        arr[(int)Mesh.ArrayType.Index] = index;


        var meshrid = VisualServer.MeshCreate();
        VisualServer.MeshAddSurfaceFromArrays(meshrid, VisualServer.PrimitiveType.Triangles, new Godot.Collections.Array(arr));
        var ins = VisualServer.InstanceCreate2(meshrid, GetWorld().Scenario);

        SpatialMaterial mtl = new SpatialMaterial();
        mtl.ParamsCullMode = SpatialMaterial.CullMode.Disabled;
        mtl.AlbedoColor = new Color(1, 0, 0);
        VisualServer.InstanceSetSurfaceMaterial(ins, 0, mtl.GetRid());

I mean, after using the above sample code to draw a mesh(for some reason I don't want to use meshinstance for drawing), I can't use the instances_cull_ray function to query the mesh that I just drew. Is there any other interface that can easily implement the function of click query?

lee-willis

ning_xue " I can't use the instances_cull_ray function to query the mesh that I just drew"

Why can't you use instances_cull_ray()? Did you actually draw the mesh, or just create it? If I'm reading the docs correctly, then to use the VisualServer, the object must be drawn to a viewport, so if you create a mesh, but don't add it to a scene, then you can't query, b/c it's not drawn.

cybereality

The geometry class has math functions you can use in pure code.

https://docs.godotengine.org/en/stable/classes/class_geometry.html