com.unity.uiextensions.nosa.../Scripts/Effects/CurvedText.cs

69 lines
2.4 KiB
C#

/// Credit Breyer
/// Sourced from - http://forum.unity3d.com/threads/scripts-useful-4-6-scripts-collection.264161/#post-1777407
namespace UnityEngine.UI.Extensions
{
[RequireComponent(typeof(Text), typeof(RectTransform))]
[AddComponentMenu("UI/Effects/Extensions/Curved Text")]
public class CurvedText : BaseMeshEffect
{
public AnimationCurve curveForText = AnimationCurve.Linear(0, 0, 1, 10);
public float curveMultiplier = 1;
private 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<RectTransform>();
if (curveForText[curveForText.length - 1].time != rectTrans.rect.width)
OnRectTransformDimensionsChange();
}
#endif
protected override void Awake()
{
base.Awake();
rectTrans = GetComponent<RectTransform>();
OnRectTransformDimensionsChange();
}
protected override void OnEnable()
{
base.OnEnable();
rectTrans = GetComponent<RectTransform>();
OnRectTransformDimensionsChange();
}
public override void ModifyMesh(VertexHelper vh)
{
int count = vh.currentVertCount;
if (!IsActive() || count == 0)
{
return;
}
for (int index = 0; index < vh.currentVertCount; index++)
{
UIVertex uiVertex = new UIVertex();
vh.PopulateUIVertex(ref uiVertex, index);
uiVertex.position.y += curveForText.Evaluate(rectTrans.rect.width * rectTrans.pivot.x + uiVertex.position.x) * curveMultiplier;
vh.SetUIVertex(uiVertex, index);
}
}
protected override void OnRectTransformDimensionsChange()
{
if (rectTrans)
{
Keyframe tmpRect = curveForText[curveForText.length - 1];
tmpRect.time = rectTrans.rect.width;
curveForText.MoveKey(curveForText.length - 1, tmpRect);
}
}
}
}