扩展编辑器的脚本都应该放到名为Editor的文件夹下。
这个脚本用于创建编辑器附加组件，并采用全定制方式在脚本中生成Quad，对应位置为网格的轴心点。
通过自定义编辑器可以生成顶点和三角面更少的平面，可以起到优化的作用。
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System.IO;
public class CreatePlan : ScriptableWizard
{
public enum AnchorPoint
{
TopLeft,
TopMiddle,
TopRight,
RightMiddle,
BottomRight,
BottomMiddle,
BottomLeft,
LeftMiddle,
Center,
Custom
}
public string MeshName = "Quad";
public string GameObjectName = "Plane_Object";
public string AssetFolder= "Assets";
public float Width = 1.0f;
public float Height = 1.0f;
public AnchorPoint Anchor = AnchorPoint.Center;
public float AnchorX = 0.5f;
public float AnchorY = 0.5f;
[MenuItem("GameObject/Create Other/Custom Plane")]
static void CreateWizard()
{
DisplayWizard("CreatePlane", typeof(CreatePlan));
}
private void OnEnable()
{
OnSelectionChange();
}
void OnInspectorUpdate()
{
switch(Anchor)
{
case AnchorPoint.TopLeft:
AnchorX = 0.0f * Width;
AnchorY = 1.0f * Height;
break;
case AnchorPoint.TopMiddle:
AnchorX = 0.5f * Width;
AnchorY = 0.5f * Height;
break;
case AnchorPoint.TopRight:
AnchorX = 1.0f * Width;
AnchorY = 1.0f * Height;
break;
case AnchorPoint.RightMiddle:
AnchorX = 1.0f * Width;
AnchorY = 0.5f * Height;
break;
case AnchorPoint.BottomRight:
AnchorX = 1.0f * Width;
AnchorY = 0.0f * Height;
break;
case AnchorPoint.BottomMiddle:
AnchorX = 0.5f * Width;
AnchorY = 0.0f * Height;
break;
case AnchorPoint.BottomLeft:
AnchorX = 0.0f * Width;
AnchorY = 0.0f * Height;
break;
case AnchorPoint.LeftMiddle:
AnchorX = 0.0f * Width;
AnchorY = 0.5f * Height;
break;
case AnchorPoint.Center:
AnchorX = 0.5f * Width;
AnchorY = 0.5f * Height;
break;
case AnchorPoint.Custom:
default:
break;
}
}
private void OnSelectionChange()
{
if(Selection.objects!=null && Selection.objects.Length==1)
{
AssetFolder = Path.GetDirectoryName(AssetDatabase.GetAssetPath(Selection.objects[0]));
}
}
private void OnWizardCreate()
{
Vector3[] Vertices = new Vector3[4];
Vector2[] UVs = new Vector2[4];
int[] Triangles = new int[6];
Vertices[0].x = -AnchorX;
Vertices[0].y = -AnchorY;
Vertices[1].x = Vertices[0].x + Width;
Vertices[1].y = Vertices[0].y;
Vertices[2].x = Vertices[0].x;
Vertices[2].y = Vertices[0].y + Height;
Vertices[3].x = Vertices[0].x + Width;
Vertices[3].y = Vertices[0].y + Height;
UVs[0].x = 0.0f;
UVs[0].y = 0.0f;
UVs[1].x = 1.0f;
UVs[1].y = 0.0f;
UVs[2].x = 0.0f;
UVs[2].y = 1.0f;
UVs[3].x = 1.0f;
UVs[3].y = 1.0f;
Triangles[0] = 3;
Triangles[1] = 1;
Triangles[2] = 2;
Triangles[3] = 2;
Triangles[4] = 1;
Triangles[5] = 0;
Mesh mesh = new Mesh();
mesh.name = MeshName;
mesh.vertices = Vertices;
mesh.uv = UVs;
mesh.triangles = Triangles;
mesh.RecalculateNormals();
AssetDatabase.CreateAsset(mesh, AssetDatabase.GenerateUniqueAssetPath(AssetFolder + "/" + MeshName) + ".asset");
AssetDatabase.SaveAssets();
GameObject plane = new GameObject(GameObjectName);
MeshFilter meshFilter = (MeshFilter)plane.AddComponent(typeof(MeshFilter));
meshFilter.sharedMesh = mesh;
mesh.RecalculateBounds();
plane.AddComponent<MeshRenderer>();
}
}
