UGUI实现Text显示两种颜色过滤效果（整理）

文章转载出处1： http://www.xuanyusong.com/archives/3471

     2： http://lib.csdn.net/snippet/unity3d/39429

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出处1：

如下图所示，用法和UGUI自带的outline和shadow一样，可以同时使用。

代码在这里了。我加了个判断，它原来的有越界的隐患。

usingUnityEngine;

usingSystem.Collections; usingSystem.Collections.Generic; usingUnityEngine.UI;   [AddComponentMenu("UI/Effects/Gradient")] publicclassGradient:BaseVertexEffect{ [SerializeField] privateColor32topColor=Color.white; [SerializeField] privateColor32bottomColor=Color.black; publicoverridevoidModifyVertices(List<UIVertex>vertexList){ if(!IsActive()){ return; }   intcount=vertexList.Count; if(count>0){ floatbottomY=vertexList[0].position.y; floattopY=vertexList[0].position.y; for(inti=1;i<count;i++){ floaty=vertexList[i].position.y; if(y>topY){ topY=y; } elseif(y<bottomY){ bottomY=y; } } floatuiElementHeight=topY-bottomY; for(inti=0;i<count;i++){ UIVertexuiVertex=vertexList[i]; uiVertex.color=Color32.Lerp(bottomColor,topColor,(uiVertex.position.y-bottomY)/uiElementHeight); vertexList[i]=uiVertex; } } } }

如果你的项目升级到了5.2 请使用下面的代码，感谢代码的提供者。@獨立遊戲開發熊

usingUnityEngine; usingSystem.Collections; usingSystem.Collections.Generic; usingUnityEngine.UI;   [AddComponentMenu("UI/Effects/Gradient")] publicclassGradient:  BaseMeshEffect { [SerializeField] privateColor32 topColor=Color.white; [SerializeField] privateColor32 bottomColor=Color.black; publicoverridevoidModifyMesh(Meshmesh) { if(!IsActive()){ return; }   Vector3[]vertexList=mesh.vertices; intcount=mesh.vertexCount; if(count>0)

{ floatbottomY=vertexList[0].y; floattopY=vertexList[0].y;              for(inti=1;i<count;i++){ floaty=vertexList[i].y; if(y>topY){ topY=y; }elseif(y<bottomY){ bottomY=y; } } List<Color32>colors=newList<Color32>(); floatuiElementHeight=topY-bottomY; for(inti=0;i<count;i++){ colors.Add(Color32.Lerp(bottomColor,topColor,(vertexList[i].y-bottomY)/uiElementHeight)); } mesh.SetColors(colors); } } } 

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出处2：

using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.UI;   [AddComponentMenu("UI/Effects/Gradient")] public class Gradient : BaseMeshEffect {     [SerializeField] private Color32 topColor = Color.white;       [SerializeField] private Color32 bottomColor = Color.black;       public override void ModifyMesh(VertexHelper vh)     {         if(!IsActive()) {             return;         }           varvertexList = newList<UIVertex>();         vh.GetUIVertexStream(vertexList);         int count = vertexList.Count;                   ApplyGradient(vertexList, 0, count);         vh.Clear();         vh.AddUIVertexTriangleStream(vertexList);     }       private void ApplyGradient(List<UIVertex> vertexList, int start, int end)     {         float bottomY = vertexList[0].position.y;         float topY = vertexList[0].position.y;         for(int i = start; i < end; ++i) {             float y = vertexList[i].position.y;             if(y > topY) {                 topY = y;             } elseif (y < bottomY) {                 bottomY = y;             }         }           float uiElementHeight = topY - bottomY;         for(int i = start; i < end; ++i) {             UIVertex uiVertex = vertexList[i];             uiVertex.color = Color32.Lerp(bottomColor, topColor, (uiVertex.position.y - bottomY)/uiElementHeight);             vertexList[i] = uiVertex;         }     } }