Unity中Text渐变色,和Text间距
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<UIVertex> verts, int index, Color32 c)
{
UIVertex vertex = verts[index];
vertex.color = c;
verts[index] = vertex;
}
private void ModifyVertices(List<UIVertex> 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<UIVertex> verts = new List<UIVertex>(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<UIVertex> ();
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<UIVertex> _vertexList = new List<UIVertex>();
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;
/// <summary>
/// 起点索引
/// </summary>
public int StartVertexIndex
{
get
{
return _startVertexIndex;
}
}
private int _endVertexIndex = 0;
/// <summary>
/// 终点索引
/// </summary>
public int EndVertexIndex
{
get
{
return _endVertexIndex;
}
}
private int _vertexCount = 0;
/// <summary>
/// 该行占的点数目
/// </summary>
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<Text>();
if (text == null)
{
Debug.LogError("Missing Text component");
return;
}
List<UIVertex> vertexs = new List<UIVertex>();
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);
}
}
}
}
}
