Unity 若要使用漸層字型，可以新增一個TextGradient的cs來控制，這個檔案丟在你Assets中scripts底下就可以使用了
using UnityEngine;
using UnityEngine.UI;
/// <summary>
/// 該效果為 UGUI Text 文字顏色漸層效果.
/// </summary>
[AddComponentMenu( "UI/Effects/Gradient" )]
public class TextGradient : BaseMeshEffect
{
public Color32 topColor = Color.white;
public Color32 bottomColor = Color.black;
public override void ModifyMesh( VertexHelper vh )
{
float bottomY = -1;
float topY = -1;
for ( int i = 0; i < vh.currentVertCount; i++ )
{
UIVertex v = new UIVertex();
vh.PopulateUIVertex( ref v, i );
if ( bottomY == -1 )
bottomY = v.position.y;
if ( topY == -1 )
topY = v.position.y;
if ( v.position.y > topY )
topY = v.position.y;
else if ( v.position.y < bottomY )
bottomY = v.position.y;
}
float uiElementHeight = topY - bottomY;
for ( int i = 0; i < vh.currentVertCount; i++ )
{
UIVertex v = new UIVertex();
vh.PopulateUIVertex( ref v, i );
v.color = Color32.Lerp( bottomColor, topColor, (v.position.y - bottomY) / uiElementHeight );
vh.SetUIVertex( v, i );
}
}
}
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