CurvedText.cs

using System.Collections.Generic; using UnityEngine; using UnityEngine.UI;

[RequireComponent( typeof( Text ), typeof( RectTransform ) )] public class CurvedText : BaseMeshEffect { public AnimationCurve curveForText = AnimationCurve.Linear( 0, 0, 1, 10 ); public float curveMultiplier = 1; public RectTransform rectTrans;

#if UNITY_EDITOR protected override void OnValidate() { base.OnValidate(); if ( curveForText[ 0 ].time != 0 ) { var tmpRect = curveForText[ 0 ]; tmpRect.time = 0; curveForText.MoveKey( 0, tmpRect ); } if ( rectTrans == null ) rectTrans = GetComponent(); if ( curveForText[ curveForText.length - 1 ].time != rectTrans.rect.width ) OnRectTransformDimensionsChange(); } #endif protected override void Awake() { base.Awake(); rectTrans = GetComponent(); OnRectTransformDimensionsChange(); } protected override void OnEnable() { base.OnEnable(); rectTrans = GetComponent(); OnRectTransformDimensionsChange(); } public override void ModifyMesh( VertexHelper vh ) { if ( !IsActive() ) return;

    var verts = new List<UIVertex>();
    vh.GetUIVertexStream( verts );

    for ( int index = 0; index < verts.Count; index++ )
    {
        var uiVertex = verts[ index ];
        //Debug.Log ();
        uiVertex.position.y += curveForText.Evaluate( rectTrans.rect.width * rectTrans.pivot.x + uiVertex.position.x ) * curveMultiplier;
        verts[ index ] = uiVertex;
    }

    vh.Clear();
    vh.AddUIVertexTriangleStream( verts );
}
protected override void OnRectTransformDimensionsChange()
{
    var tmpRect = curveForText[ curveForText.length - 1 ];
    tmpRect.time = rectTrans.rect.width;
    curveForText.MoveKey( curveForText.length - 1, tmpRect );
}

}