Unity中Text渐变色,和Text间距-白红宇

Unity中Text渐变色,和Text间距

阅读量：5079 次

发布时间：2019-06-12

本文共 9503 字，大约阅读时间需要 31 分钟。

文字渐变色代码

using UnityEngine;using System.Collections;using UnityEngine.UI;using System.Collections.Generic;[RequireComponent(typeof(Text))]public class TextVerticalGradientTwoColor : BaseMeshEffect{    public Color colorTop = Color.red;    public Color colorBottom = Color.green;    protected TextVerticalGradientTwoColor()    {    }    private static void setColor(List
     
       verts, int index, Color32 c)    {        UIVertex vertex = verts[index];        vertex.color = c;        verts[index] = vertex;    }    private void ModifyVertices(List
      
        verts)    {        for (int i = 0; i < verts.Count; i += 6)        {            setColor(verts, i + 0, colorTop);            setColor(verts, i + 1, colorTop);            setColor(verts, i + 2, colorBottom);            setColor(verts, i + 3, colorBottom);            setColor(verts, i + 4, colorBottom);            setColor(verts, i + 5, colorTop);        }    }    #region implemented abstract members of BaseMeshEffect    public override void ModifyMesh(VertexHelper vh)    {        if (!this.IsActive())        {            return;        }        List
       
         verts = new List
        
         (vh.currentVertCount);        vh.GetUIVertexStream(verts);        ModifyVertices(verts);        vh.Clear();        vh.AddUIVertexTriangleStream(verts);    }    #endregion}

　　字体渐变升级版:

using System.Collections;using System.Collections.Generic;using UnityEngine;using UnityEngine.UI;[AddComponentMenu ("UI/Effects/TextGradient")][RequireComponent (typeof(Text))]public class UICustomTextGradient : BaseMeshEffect{	public Color32 topColor = Color.white;	public Color32 bottomColor = Color.black;	//后面自己添加的控制中心移动属性，有时候看着渐变不顺眼，中心偏离高或者低了，就可以通过这个去调整	[RangeAttribute (0, 1)]	public float center = 0.5f;	public override void ModifyMesh (VertexHelper vh)	{		if (!IsActive ()) {			return;		}		var count = vh.currentVertCount;		if (count == 0)			return;		var vertexs = new List
     
       ();		for (var i = 0; i < count; i++) {			var vertex = new UIVertex ();			vh.PopulateUIVertex (ref vertex, i);			vertexs.Add (vertex);		}		var topY = vertexs [0].position.y;		var bottomY = vertexs [0].position.y;		for (var i = 1; i < count; i++) {			var y = vertexs [i].position.y;			if (y > topY) {				topY = y;			} else if (y < bottomY) {				bottomY = y;			}		}		var height = topY - bottomY;		for (var i = 0; i < count; i++) {			var vertex = vertexs [i];			//使用处理过后的颜色			// var color = Color32.Lerp(bottomColor, topColor, (vertex.position.y - bottomY) / height);			var color = CenterColor (bottomColor, topColor, (vertex.position.y - bottomY) / height);			vertex.color = color;			vh.SetUIVertex (vertex, i);		}	}	//加了一个对颜色处理的函数，主要调整中心的位置	private Color32 CenterColor (Color32 bc, Color32 tc, float time)	{		if (center == 0) {			return bc;		} else if (center == 1) {			return tc;		} else {			var centerColor = Color32.Lerp (bottomColor, topColor, 0.5f);			var resultColor = tc;			if (time < center) {				resultColor = Color32.Lerp (bottomColor, centerColor, time / center);			} else {				resultColor = Color32.Lerp (centerColor, topColor, (time - center) / (1 - center));			}			return resultColor;		}	}}

　　字体渐变再次升级:

using System.Collections.Generic;  public enum Type{    Horizontal,    Vertical}  public enum Blend{    Override,    Add,    Multiply}  namespace UnityEngine.UI{    [AddComponentMenu("UI/Effects/UGUI_Gradient")]    public class Gradient : BaseMeshEffect    {        [SerializeField]        Type _gradientType;          [SerializeField]        Blend _blendMode = Blend.Multiply;          [SerializeField]        [Range(-1, 1)]        float _offset = 0f;          [SerializeField]        UnityEngine.Gradient _effectGradient = new UnityEngine.Gradient()        { colorKeys = new GradientColorKey[] { new GradientColorKey(Color.black, 0), new GradientColorKey(Color.white, 1) } };          #region Properties        public Blend BlendMode        {            get { return _blendMode; }            set { _blendMode = value; }        }          public UnityEngine.Gradient EffectGradient        {            get { return _effectGradient; }            set { _effectGradient = value; }        }          public Type GradientType        {            get { return _gradientType; }            set { _gradientType = value; }        }          public float Offset        {            get { return _offset; }            set { _offset = value; }        }        #endregion          public override void ModifyMesh(VertexHelper helper)        {            if (!IsActive() || helper.currentVertCount == 0)                return;              List
     
       _vertexList = new List
      
       ();              helper.GetUIVertexStream(_vertexList);              int nCount = _vertexList.Count;            switch (GradientType)            {                case Type.Horizontal:                    {                        float left = _vertexList[0].position.x;                        float right = _vertexList[0].position.x;                        float x = 0f;                        for (int i = nCount - 1; i >= 1; --i)                        {                            x = _vertexList[i].position.x;                              if (x > right) right = x;                            else if (x < left) left = x;                        }                        float width = 1f / (right - left);                        UIVertex vertex = new UIVertex();                          for (int i = 0; i < helper.currentVertCount; i++)                        {                            helper.PopulateUIVertex(ref vertex, i);                              vertex.color = BlendColor(vertex.color, EffectGradient.Evaluate((vertex.position.x - left) * width - Offset));                              helper.SetUIVertex(vertex, i);                        }                    }                    break;                  case Type.Vertical:                    {                        float bottom = _vertexList[0].position.y;                        float top = _vertexList[0].position.y;                        float y = 0f;                        for (int i = nCount - 1; i >= 1; --i)                        {                            y = _vertexList[i].position.y;                              if (y > top) top = y;                            else if (y < bottom) bottom = y;                        }                        float height = 1f / (top - bottom);                        UIVertex vertex = new UIVertex();                          for (int i = 0; i < helper.currentVertCount; i++)                        {                            helper.PopulateUIVertex(ref vertex, i);                              vertex.color = BlendColor(vertex.color, EffectGradient.Evaluate((vertex.position.y - bottom) * height - Offset));                              helper.SetUIVertex(vertex, i);                        }                    }                    break;            }        }          Color BlendColor(Color colorA, Color colorB)        {            switch (BlendMode)            {                default: return colorB;                case Blend.Add: return colorA + colorB;                case Blend.Multiply: return colorA * colorB;            }        }    }}

文字间距代码:

using UnityEngine;using System.Collections;using UnityEngine.UI;using System;using System.Collections.Generic;public class Line{	private int _startVertexIndex = 0;	/// 	/// 起点索引	/// 
	public int StartVertexIndex	{		get		{			return _startVertexIndex;		}	}	private int _endVertexIndex = 0;	/// 	/// 终点索引	/// 
	public int EndVertexIndex	{		get		{			return _endVertexIndex;		}	}	private int _vertexCount = 0;	/// 	/// 该行占的点数目	/// 
	public int VertexCount	{		get		{			return _vertexCount;		}	}	public Line(int startVertexIndex,int length)	{		_startVertexIndex = startVertexIndex;		_endVertexIndex = length * 6 - 1 + startVertexIndex;		_vertexCount = length * 6;	}}[AddComponentMenu("UI/Effects/TextSpacing")]public class TextSpacing : BaseMeshEffect{	public float _textSpacing = 1f;	public override void ModifyMesh(VertexHelper vh)	{		if (!IsActive() || vh.currentVertCount == 0)		{			return;		}		Text text = GetComponent
     
      ();		if (text == null)		{			Debug.LogError("Missing Text component");			return;		}		List
      
        vertexs = new List
       
        ();		vh.GetUIVertexStream(vertexs);		int indexCount = vh.currentIndexCount;		string[] lineTexts = text.text.Split('\n');		Line[] lines = new Line[lineTexts.Length];		//根据lines数组中各个元素的长度计算每一行中第一个点的索引，每个字、字母、空母均占6个点		for (int i = 0; i < lines.Length; i++)		{			//除最后一行外，vertexs对于前面几行都有回车符占了6个点			if (i == 0)			{				lines[i] = new Line(0, lineTexts[i].Length + 1);			}			else if(i > 0 && i < lines.Length - 1)			{				lines[i] = new Line(lines[i - 1].EndVertexIndex + 1, lineTexts[i].Length + 1);			}			else			{				lines[i] = new Line(lines[i - 1].EndVertexIndex + 1, lineTexts[i].Length);			}		}		UIVertex vt;		for (int i = 0; i < lines.Length; i++)		{			for (int j = lines[i].StartVertexIndex + 6; j <= lines[i].EndVertexIndex; j++)			{				if (j < 0 || j >= vertexs.Count)				{					continue;				}				vt = vertexs[j];				vt.position += new Vector3(_textSpacing * ((j - lines[i].StartVertexIndex) / 6), 0, 0);				vertexs[j] = vt;				//以下注意点与索引的对应关系				if (j % 6 <= 2)				{					vh.SetUIVertex(vt, (j / 6) * 4 + j % 6);				}				if (j % 6 == 4)				{					vh.SetUIVertex(vt, (j / 6) * 4 + j % 6 - 1);				}			}		}	}}