ScriptedImporter.OnImportAsset

Parameters

Description

This method must by overriden by the derived class and is called by the Asset pipeline to import files.

using UnityEngine;
using UnityEditor.Experimental.AssetImporters;
using System.IO;

[ScriptedImporter(1, "cube")]
public class CubeImporter : ScriptedImporter
{
    public float m_Scale = 1;

    public override void OnImportAsset(AssetImportContext ctx)
    {
        var cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
        var position = JsonUtility.FromJson<Vector3>(File.ReadAllText(ctx.assetPath));

        cube.transform.position = position;
        cube.transform.localScale = new Vector3(m_Scale, m_Scale, m_Scale);

        // 'cube', being a GameObjects, will automatically be converted into a prefab.
        // (Only the 'Main Asset' is elligible to becoming a Prefab.)
        ctx.SetMainAsset("main obj", cube);

        var material = new Material(Shader.Find("Standard"));
        material.color = Color.red;

        // Assets need to provide a unique identifier string across imports with the assets changing,
        ctx.AddSubAsset("my Material", material);

        // Assets that are not provided into the context as import outputs,
        // must be manually cleaned up
        var tempMesh = new Mesh();
        DestroyImmediate(tempMesh);
    }
}