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Create CreatePlane.cs
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‎Assets/Scripts/Editor/Mesh/CreatePlane.cs

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// editor tools to create mesh plane with adjustable resolution
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// original : http://wiki.unity3d.com/index.php?title=CreatePlane#C.23_-_CreatePlane.cs
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using UnityEngine;
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using UnityEditor;
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using System.Collections;
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namespace UnityLibrary
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{
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public class CreatePlane : ScriptableWizard
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{
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public enum Orientation
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{
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Horizontal,
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Vertical
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}
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public enum AnchorPoint
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{
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TopLeft,
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TopHalf,
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TopRight,
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RightHalf,
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BottomRight,
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BottomHalf,
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BottomLeft,
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LeftHalf,
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Center
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}
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public int widthSegments = 1;
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public int lengthSegments = 1;
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public float width = 1.0f;
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public float length = 1.0f;
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public Orientation orientation = Orientation.Horizontal;
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public AnchorPoint anchor = AnchorPoint.Center;
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public bool addCollider = false;
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public bool createAtOrigin = true;
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public bool flipYZ = false;
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public bool twoSided = false;
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public string optionalName;
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static Camera cam;
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static Camera lastUsedCam;
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[MenuItem("GameObject/Create Other/Custom Plane...")]
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static void CreateWizard()
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{
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cam = Camera.current;
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// Hack because camera.current doesn't return editor camera if scene view doesn't have focus
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if (!cam)
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cam = lastUsedCam;
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else
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lastUsedCam = cam;
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ScriptableWizard.DisplayWizard("Create Plane",typeof(CreatePlane));
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}
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void OnWizardUpdate()
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{
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widthSegments = Mathf.Clamp(widthSegments, 1, 254);
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lengthSegments = Mathf.Clamp(lengthSegments, 1, 254);
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}
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void OnWizardCreate()
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{
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GameObject plane = new GameObject();
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if (!string.IsNullOrEmpty(optionalName))
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plane.name = optionalName;
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else
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plane.name = "Plane";
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if (!createAtOrigin && cam)
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plane.transform.position = cam.transform.position + cam.transform.forward*5.0f;
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else
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plane.transform.position = Vector3.zero;
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Vector2 anchorOffset;
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string anchorId;
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switch (anchor)
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{
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case AnchorPoint.TopLeft:
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anchorOffset = new Vector2(-width/2.0f,length/2.0f);
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anchorId = "TL";
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break;
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case AnchorPoint.TopHalf:
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anchorOffset = new Vector2(0.0f,length/2.0f);
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anchorId = "TH";
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break;
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case AnchorPoint.TopRight:
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anchorOffset = new Vector2(width/2.0f,length/2.0f);
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anchorId = "TR";
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break;
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case AnchorPoint.RightHalf:
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anchorOffset = new Vector2(width/2.0f,0.0f);
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anchorId = "RH";
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break;
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case AnchorPoint.BottomRight:
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anchorOffset = new Vector2(width/2.0f,-length/2.0f);
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anchorId = "BR";
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break;
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case AnchorPoint.BottomHalf:
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anchorOffset = new Vector2(0.0f,-length/2.0f);
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anchorId = "BH";
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break;
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case AnchorPoint.BottomLeft:
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anchorOffset = new Vector2(-width/2.0f,-length/2.0f);
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anchorId = "BL";
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break;
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case AnchorPoint.LeftHalf:
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anchorOffset = new Vector2(-width/2.0f,0.0f);
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anchorId = "LH";
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break;
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case AnchorPoint.Center:
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default:
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anchorOffset = Vector2.zero;
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anchorId = "C";
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break;
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}
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MeshFilter meshFilter = (MeshFilter)plane.AddComponent(typeof(MeshFilter));
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plane.AddComponent(typeof(MeshRenderer));
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string planeAssetName = plane.name + widthSegments + "x" + lengthSegments + "W" + width + "L" + length + (orientation == Orientation.Horizontal? "H" : "V") + anchorId + ".asset";
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Mesh m = (Mesh)AssetDatabase.LoadAssetAtPath("Assets/Editor/" + planeAssetName,typeof(Mesh));
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if (m == null)
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{
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m = new Mesh();
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m.name = plane.name;
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int hCount2 = widthSegments+1;
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int vCount2 = lengthSegments+1;
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int numTriangles = widthSegments * lengthSegments * 6;
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if (twoSided) {
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numTriangles *= 2;
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}
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int numVertices = hCount2 * vCount2;
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Vector3[] vertices = new Vector3[numVertices];
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Vector2[] uvs = new Vector2[numVertices];
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int[] triangles = new int[numTriangles];
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int index = 0;
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float uvFactorX = 1.0f/widthSegments;
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float uvFactorY = 1.0f/lengthSegments;
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float scaleX = width/widthSegments;
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float scaleY = length/lengthSegments;
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for (float y = 0.0f; y < vCount2; y++)
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{
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for (float x = 0.0f; x < hCount2; x++)
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{
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if (orientation == Orientation.Horizontal)
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{
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if (flipYZ)
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{
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vertices[index] = new Vector3(x*scaleX - width/2f - anchorOffset.x, y*scaleY - length/2f - anchorOffset.y, 0.0f);
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}else{
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vertices[index] = new Vector3(x*scaleX - width/2f - anchorOffset.x, 0.0f, y*scaleY - length/2f - anchorOffset.y);
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}
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}
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else
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{
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if (flipYZ)
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{
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vertices[index] = new Vector3(x*scaleX - width/2f - anchorOffset.x, 0.0f, y*scaleY - length/2f - anchorOffset.y);
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}else{
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vertices[index] = new Vector3(x*scaleX - width/2f - anchorOffset.x, y*scaleY - length/2f - anchorOffset.y, 0.0f);
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}
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}
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uvs[index++] = new Vector2(x*uvFactorX, y*uvFactorY);
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}
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}
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index = 0;
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for (int y = 0; y < lengthSegments; y++)
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{
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for (int x = 0; x < widthSegments; x++)
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{
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triangles[index] = (y * hCount2) + x;
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triangles[index+1] = ((y+1) * hCount2) + x;
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triangles[index+2] = (y * hCount2) + x + 1;
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triangles[index+3] = ((y+1) * hCount2) + x;
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triangles[index+4] = ((y+1) * hCount2) + x + 1;
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triangles[index+5] = (y * hCount2) + x + 1;
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index += 6;
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}
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if (twoSided) {
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// Same tri vertices with order reversed, so normals point in the opposite direction
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for (int x = 0; x < widthSegments; x++)
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{
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triangles[index] = (y * hCount2) + x;
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triangles[index+1] = (y * hCount2) + x + 1;
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triangles[index+2] = ((y+1) * hCount2) + x;
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triangles[index+3] = ((y+1) * hCount2) + x;
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triangles[index+4] = (y * hCount2) + x + 1;
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triangles[index+5] = ((y+1) * hCount2) + x + 1;
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index += 6;
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}
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}
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}
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m.vertices = vertices;
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m.uv = uvs;
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m.triangles = triangles;
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m.RecalculateNormals();
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AssetDatabase.CreateAsset(m, "Assets/Editor/" + planeAssetName);
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AssetDatabase.SaveAssets();
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}
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meshFilter.sharedMesh = m;
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m.RecalculateBounds();
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if (addCollider)
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plane.AddComponent(typeof(BoxCollider));
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Selection.activeObject = plane;
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}
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}
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}

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