基于unity3D實現漸變顏色的簡單腳本，代碼很少，就不廢話了，直接上代碼和效果圖。

效果圖：

using System; using System.Collections.Generic; using UnityEngine; using UnityEngine.UI; namespace ExtraFoundation.Components { [AddComponentMenu("UI/Effects/Gradient")] public class UIGradient : BaseMeshEffect { #region Public Declarations public enum Type { Vertical, Horizontal } #endregion #region Public Properties public Type GradientType = Type.Vertical; [Range(-1f, 1f)] public float Offset = 0f; public Gradient gradient; #endregion #region Public Methods public override void ModifyMesh(VertexHelper helper) { if (!IsActive() || helper.currentVertCount == 0) { return; } vertexList.Clear(); helper.GetUIVertexStream(vertexList); int nCount = vertexList.Count; switch (GradientType) { case Type.Vertical: { float fBottomY = vertexList[0].position.y; float fTopY = vertexList[0].position.y; float fYPos = 0f; for (int i = nCount - 1; i >= 1; --i) { fYPos = vertexList[i].position.y; if (fYPos > fTopY) fTopY = fYPos; else if (fYPos < fBottomY) fBottomY = fYPos; } float fUIElementHeight = 1f / (fTopY - fBottomY); UIVertex v = new UIVertex(); for (int i = 0; i < helper.currentVertCount; i++) { helper.PopulateUIVertex(ref v, i); v.color = gradient.Evaluate((v.position.y - fBottomY) * fUIElementHeight - Offset); helper.SetUIVertex(v, i); } } break; case Type.Horizontal: { float fLeftX = vertexList[0].position.x; float fRightX = vertexList[0].position.x; float fXPos = 0f; for (int i = nCount - 1; i >= 1; --i) { fXPos = vertexList[i].position.x; if (fXPos > fRightX) fRightX = fXPos; else if (fXPos < fLeftX) fLeftX = fXPos; } float fUIElementWidth = 1f / (fRightX - fLeftX); UIVertex v = new UIVertex(); for (int i = 0; i < helper.currentVertCount; i++) { helper.PopulateUIVertex(ref v, i); v.color = gradient.Evaluate((v.position.x - fLeftX) * fUIElementWidth - Offset); helper.SetUIVertex(v, i); } } break; default: break; } } #endregion #region Internal Fields private List vertexList = new List(); #endregion } }

雖然支持的內容不多，但是小而精，希望對大家有用。

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