unity中通过预制体生成Png图片

最新推荐文章于 2025-05-04 03:40:01 发布

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最新推荐文章于 2025-05-04 03:40:01 发布 · 828 阅读

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#unity #游戏引擎

博客介绍了Unity中预制体编辑窗口的截图功能，在选择带有MeshFilter的物体时，预览窗口会显示截图按钮，可保存为透明背景的Png图片。同时指出目前存在的问题，一是不能对整个预制体预览截图，二是灯光效果不能像编辑器内置那样跟随旋转。

功能:在预制体编辑窗口选择带有MeshFilter的物体,预览窗口会显示截图按钮,可以将当前预览窗口中的图片保存为透明背景的Png格式图片

目前存在的问题:1.不能对整个预制体预览截图
2.灯光效果,不能像编辑器内置的那样跟随旋转(或者不应该转动相机)

在这里插入图片描述

using UnityEngine;
using UnityEditor;
using System.IO;

[CustomEditor(typeof(MeshFilter))]
[CanEditMultipleObjects]
public class MeshFilterPreview : Editor
{
   
   
    private PreviewRenderUtility m_PreviewRenderUtility;
    private MeshFilter m_TargetMeshFilter;
    private MeshRenderer m_TargetMeshRenderer;
    private static int sliderHash = "Slider".GetHashCode();
    private Vector2 m_Drag;
    Texture result_render;

    private void ValidateData()
    {
   
   
        if (m_PreviewRenderUtility == null)
        {
   
   
            m_PreviewRenderUtility = new PreviewRenderUtility();

            m_PreviewRenderUtility.camera.transform.position = new Vector3(0, 0, -6);
            m_PreviewRenderUtility.camera.transform.rotation = Quaternion.identity;
        }

        m_TargetMeshFilter = target as MeshFilter;       
        m_TargetMeshRenderer = m_TargetMeshFilter.GetComponent<MeshRenderer>();
    }

    public override bool HasPreviewGUI()
    {
   
   
        ValidateData();

        return true;
    }

    public override void OnPreviewGUI(Rect r, GUIStyle background)
    {
   
   
        m_Drag = Drag2D(m_Drag, r);

        if (Event.current.type == EventType.Repaint)
        {
   
   
            if (m_TargetMeshRenderer == null)
            {
   
   
                EditorGUI.DropShadowLabel(r, "Mesh Renderer Required");
            }
            else
            {
   
   
                m_PreviewRenderUtility.BeginPreview(r, background);

                m_PreviewRenderUtility.DrawMesh(m_TargetMeshFilter.sharedMesh, Matrix4x4.identity, m_TargetMeshRenderer.sharedMaterial, 0);


                var mesh = m_TargetMeshFilter.sharedMesh;
                var bounds =