unity编辑器和插件(三)

 接下来 我就开始正规的编辑器和插件的制作。

我这里是按照 IOS android的 控件为例子模板。来制作 一套使用 unity书写的控件。

好首先我们来想下  IOS 和android的 控件都是以四边形基础的。

SO，

接下来 我们来转像unity，在unity中 我们怎么去建立一个四边形那， 依照图形绘制的原理。三点一面的理论。我们可以使用6个点来建立一个两三角形组成的四边形。

我们先学会怎么去绘制一个view，也就是简单的一个色面。

我们知道 unity中得面也是采取这种的绘制方法，绘制一个面就会多一个drawcall，为了面绘制的节省，我们就会使用面合并的原理，来减少drawcall的产生（opengl自动处理）。

好，我们来定义六个点:

public static int[] initTri(){int[] triangle = new int[6];triangle [0] = 0;triangle [1] = 2;triangle [2] = 1;triangle [3] = 2;triangle [4] = 3;triangle [5] = 1;return triangle;}

有了 6个点，我们就要去定义三角形的大小。

public static Vector3 [] initVertice(float width ,float height,float ancPointx,float ancPointY){        Vector3 [] viewVer = new Vector3[4];        viewVer [0] = new Vector3 (-ancPointx*-width,-ancPointY*height,0);        viewVer [1] = new Vector3 ((1-ancPointx)*-width,-ancPointY*height,0);        viewVer [2] = new Vector3 (-ancPointx*-width,(1-ancPointY)*height,0);        viewVer [3] = new Vector3 ((1-ancPointx)*-width,(1-ancPointY)*height,0);        return viewVer;    }

其中ancPointx，ancPointy,为 我们经常用到的锚点，width，height就是你要绘制的面的宽和高了。

好了 有了这些东西 现在制作一个没有任何颜色的几条线组成的线框。

我们为了让这个面有颜色，必学要有 法线 和 材质，shader 这样才是一个完整的 色面。

法线

public static Vector3[] initNormal(){        Vector3[] normals = new Vector3[4];        normals[0] = -Vector3.forward;        normals[1] = -Vector3.forward;        normals[2] = -Vector3.forward;        normals[3] = -Vector3.forward;        return normals;    }

当然如果还想去绘制图片在面上就要有 UV的的定义

public static Vector2 [] initUV(){        Vector2 [] uv = new Vector2[4];        uv[0] = new Vector2(0, 0);        uv[1] = new Vector2(1, 0);        uv[2] = new Vector2(0, 1);        uv[3] = new Vector2(1, 1);        return uv;    }

想好这些东西，我们就开始定义面了。

源码奉上！

公用类！

using UnityEngine;using System.Collections;public class InitBase : MonoBehaviour {    public static Vector3 [] initVertice(float width ,float height,float ancPointx,float ancPointY){        Vector3 [] viewVer = new Vector3[4];        viewVer [0] = new Vector3 (-ancPointx*-width,-ancPointY*height,0);        viewVer [1] = new Vector3 ((1-ancPointx)*-width,-ancPointY*height,0);        viewVer [2] = new Vector3 (-ancPointx*-width,(1-ancPointY)*height,0);        viewVer [3] = new Vector3 ((1-ancPointx)*-width,(1-ancPointY)*height,0);        return viewVer;    }public static int[] initTri(){        int[] triangle = new int[6];        triangle [0] = 0;        triangle [1] = 2;        triangle [2] = 1;        triangle [3] = 2;        triangle [4] = 3;        triangle [5] = 1;        return triangle;    }        public static Vector3[] initNormal(){        Vector3[] normals = new Vector3[4];        normals[0] = -Vector3.forward;        normals[1] = -Vector3.forward;        normals[2] = -Vector3.forward;        normals[3] = -Vector3.forward;        return normals;    }        public static Vector2 [] initUV(){        Vector2 [] uv = new Vector2[4];        uv[0] = new Vector2(0, 0);        uv[1] = new Vector2(1, 0);        uv[2] = new Vector2(0, 1);        uv[3] = new Vector2(1, 1);        return uv;    }}

物体上的类View

using UnityEngine;using System.Collections;[RequireComponent(typeof(MeshFilter), typeof(MeshRenderer))][ExecuteInEditMode]public class VKView : MonoBehaviour {Mesh viewMesh;Material viewDefultMat;bool isChange;[HideInInspector] public float ancPointx=0.5f,ancPointy = 0.5f;[HideInInspector] public int width = 100,height = 100;public string test;// Use this for initializationvoid Start () {viewDefultMat = new Material (Shader.Find ("VK/VKViewShader"));gameObject.GetComponent<MeshRenderer> ().sharedMaterial = viewDefultMat;viewMesh = new Mesh ();gameObject.GetComponent<MeshFilter> ().mesh = viewMesh;updateView();}public void updateView(){if (viewDefultMat != null) {viewMesh.vertices = InitBase.initVertice(width,height,ancPointx,ancPointy);viewMesh.triangles = InitBase.initTri();viewMesh.normals = InitBase.initNormal();viewMesh.uv = InitBase.initUV();}}#if UNITY_EDITORvoid OnDrawGizmosSelected(){Gizmos.color = Color.blue;Gizmos.DrawWireCube (transform.position,new Vector3(width,height,0f));}#endif}

view的编辑器类

using UnityEngine;using System.Collections;using UnityEditor;[CustomEditor(typeof(VKView))][ExecuteInEditMode]public class VKViewEditor : Editor {public override void OnInspectorGUI (){base.OnInspectorGUI ();VKView vkView = (VKView)target;//vkView.tex = EditorGUILayout.ObjectField ("Texture",vkView.tex,typeof(Texture),true)as Texture;vkView.width=EditorGUILayout.IntField("Width",vkView.width);vkView.height=EditorGUILayout.IntField("Height",vkView.height);vkView.test = EditorGUILayout.TextField("面板显示的名字:",vkView.test);vkView.updateView ();EditorUtility.SetDirty(vkView);EditorUtility.UnloadUnusedAssets();}}

还有shader

Shader "VK/VKViewShader" {Properties {        _Color ("Main Color", Color) = (1,1,1,1)    }      SubShader {        Pass {        Cull Front        Color [_Color]        }    }}

所有代码奉出，学习使用，不会的可以留言哦