using UnityEngine;
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using System.Collections;
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using UnityEngine.UI;
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using System;
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using System.Collections.Generic;
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[DisallowMultipleComponent]
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[AddComponentMenu("UI/Effects/Reflection")]
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public class Reflection:BaseMeshEffect {
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[Range(0,30)]
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[SerializeField]
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float m_Distance;
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public float distance {
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get {
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return m_Distance;
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}
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}
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[Range(0,1)]
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[SerializeField]
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float m_HeightScale = 1f;
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public float heightScale {
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get {
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return m_HeightScale;
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}
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}
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[Range(0,1)]
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[SerializeField]
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float m_Virtualness;
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public float virtualness {
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get {
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return m_Virtualness;
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}
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}
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[SerializeField]
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float m_OffsetX = 0;
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public float offsetX {
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get {
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return m_OffsetX;
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}
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}
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public override void ModifyMesh(VertexHelper vh) {
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if(!IsActive() || vh.currentVertCount == 0) {
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return;
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}
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var vertexs = new List<UIVertex>();
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vh.GetUIVertexStream(vertexs);
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var count = vertexs.Count;
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var edge = UIUtility.GetEdge(vertexs,1);
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var height = (edge[1] - edge[0]) * heightScale;
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if(height == 0) {
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return;
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}
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var mirrorMinY = (edge[0] - edge[1]) * heightScale + edge[0] - distance;
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var color = this.graphic.color;
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var top = color.SetA(1 - virtualness);
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var bottom = color.SetA(0);
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for(var i = 0;i < count;i++) {
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var vertex = vertexs[i];
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vertexs.Add(vertex);
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var position = vertex.position;
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position.y = edge[0] - distance + (edge[0] - position.y) * heightScale;
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position.x += offsetX * (1 - Mathf.Abs((position.y - mirrorMinY) / height));
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vertex.position = position;
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var colort = Mathf.Abs((position.y - mirrorMinY) / height);
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vertex.color = Color32.Lerp(bottom,top,colort);
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vertexs[i + count] = vertex;
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}
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vh.Clear();
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vh.AddUIVertexTriangleStream(vertexs);
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}
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}
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