246 lines
7.9 KiB
C#
246 lines
7.9 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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namespace XericLibrary.Runtime.UIGraph
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{
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/// <summary>
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/// 曲线缓存渲染器基类
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/// 管理 CurveCacheEntry 列表 + 扁平控制点/宽度/箭头缓存 + 脏标记增量重建
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/// LateUpdate 中只重建脏标记范围内的曲线
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/// </summary>
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[RequireComponent(typeof(CanvasRenderer))]
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public abstract class CurveCacheRendererBase : MaskableGraphic
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{
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#region 默认材质
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private static Material s_DefaultMaterial;
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private const string DefaultShaderPath = "XericLibrary/UIGraph/XericUICurve";
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public override Material defaultMaterial
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{
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get
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{
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if (s_DefaultMaterial == null)
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{
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var shader = Shader.Find(DefaultShaderPath);
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if (shader != null)
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s_DefaultMaterial = new Material(shader);
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else
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s_DefaultMaterial = base.defaultMaterial;
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}
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return s_DefaultMaterial;
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}
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}
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#endregion
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#region 数据缓存
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/// <summary>曲线条目列表</summary>
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protected List<CurveCacheEntry> m_Curves = new List<CurveCacheEntry>();
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/// <summary>所有曲线的控制点扁平存储</summary>
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protected List<Vector2> m_ControlPoints = new List<Vector2>();
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/// <summary>所有曲线的宽度扁平存储（与控制点一一对应）</summary>
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protected List<float> m_Widths = new List<float>();
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/// <summary>所有曲线的箭头扁平存储</summary>
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protected List<ArrowHeadData> m_Arrows = new List<ArrowHeadData>();
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/// <summary>模型顶点缓存</summary>
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protected List<UIVertex> m_MeshVertexCache = new List<UIVertex>();
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/// <summary>三角形索引缓存</summary>
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protected List<int> m_MeshIndexCache = new List<int>();
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/// <summary>脏标记范围起点（曲线索引），-1 表示无脏标记</summary>
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protected int m_DirtyStartIndex = -1;
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/// <summary>脏标记范围终点（曲线索引）</summary>
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protected int m_DirtyEndIndex = -1;
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#endregion
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#region API
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/// <summary>
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/// 添加一条曲线
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/// </summary>
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/// <param name="entry">曲线缓存条目（控制点计数和起始索引需预先设置）</param>
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/// <param name="controlPoints">控制点数组</param>
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/// <param name="widths">宽度数组（长度需与控制点一致）</param>
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/// <param name="arrows">箭头数组（可选）</param>
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/// <returns>曲线索引</returns>
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public int AddCurve(CurveCacheEntry entry, Vector2[] controlPoints, float[] widths, ArrowHeadData[] arrows = null)
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{
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int index = m_Curves.Count;
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// 填充起始索引
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entry.controlPointStartIndex = m_ControlPoints.Count;
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entry.widthStartIndex = m_Widths.Count;
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entry.arrowStartIndex = (arrows != null && arrows.Length > 0) ? m_Arrows.Count : -1;
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entry.arrowCount = arrows?.Length ?? 0;
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entry.controlPointCount = controlPoints.Length;
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m_Curves.Add(entry);
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m_ControlPoints.AddRange(controlPoints);
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m_Widths.AddRange(widths);
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if (arrows != null)
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m_Arrows.AddRange(arrows);
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MarkDirty(index);
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return index;
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}
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/// <summary>
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/// 移除指定曲线
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/// </summary>
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public void RemoveCurve(int index)
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{
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if (index < 0 || index >= m_Curves.Count) return;
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m_Curves.RemoveAt(index);
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RebuildAll();
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}
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/// <summary>
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/// 标记指定曲线为脏
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/// </summary>
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public void SetCurveDirty(int index)
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{
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MarkDirty(index);
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}
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/// <summary>
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/// 清空所有曲线
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/// </summary>
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public void ClearAll()
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{
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m_Curves.Clear();
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m_ControlPoints.Clear();
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m_Widths.Clear();
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m_Arrows.Clear();
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m_MeshVertexCache.Clear();
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m_MeshIndexCache.Clear();
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m_DirtyStartIndex = -1;
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m_DirtyEndIndex = -1;
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SetVerticesDirty();
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}
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#endregion
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#region 脏标记
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protected void MarkDirty(int index)
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{
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if (m_DirtyStartIndex < 0 || index < m_DirtyStartIndex)
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m_DirtyStartIndex = index;
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if (m_DirtyEndIndex < 0 || index > m_DirtyEndIndex)
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m_DirtyEndIndex = index;
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}
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/// <summary>
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/// 标记所有曲线为脏（下次 LateUpdate 全量重绘）
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/// 适用于：更新控制点/宽度后，不改变元素数量的重绘
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/// </summary>
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public void RebuildAll()
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{
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m_DirtyStartIndex = 0;
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m_DirtyEndIndex = m_Curves.Count - 1;
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if (m_DirtyEndIndex < 0)
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m_DirtyStartIndex = -1;
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}
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#endregion
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#region LateUpdate
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protected virtual void LateUpdate()
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{
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if (m_DirtyStartIndex < 0) return;
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int start = m_DirtyStartIndex;
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// 统计脏范围前的顶点/索引数（这些无需重建）
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int preVertexCount = 0;
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int preIndexCount = 0;
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for (int i = 0; i < start; i++)
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{
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preVertexCount += m_Curves[i].vertexCount;
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preIndexCount += m_Curves[i].triangleCount * 3;
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}
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// 从 start 开始重建所有曲线
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var tempVerts = new List<UIVertex>();
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var tempIndices = new List<int>();
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int vAccum = preVertexCount;
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int iAccum = preIndexCount;
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for (int i = start; i < m_Curves.Count; i++)
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{
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var entry = m_Curves[i];
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int vertBefore = tempVerts.Count;
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int idxBefore = tempIndices.Count;
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CurveMeshGenerator.GenerateCurve(
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entry, m_ControlPoints, m_Widths, m_Arrows,
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tempVerts, tempIndices);
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var updated = entry;
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updated.startVertexIndex = vAccum;
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updated.vertexCount = tempVerts.Count - vertBefore;
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updated.startIndexIndex = iAccum;
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updated.triangleCount = (tempIndices.Count - idxBefore) / 3;
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m_Curves[i] = updated;
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vAccum += updated.vertexCount;
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iAccum += updated.triangleCount * 3;
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}
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// 合并到主缓存
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int totalVertices = vAccum;
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int totalIndices = iAccum;
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while (m_MeshVertexCache.Count < totalVertices)
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m_MeshVertexCache.Add(new UIVertex());
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while (m_MeshIndexCache.Count < totalIndices)
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m_MeshIndexCache.Add(0);
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for (int i = 0; i < tempVerts.Count; i++)
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m_MeshVertexCache[preVertexCount + i] = tempVerts[i];
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for (int i = 0; i < tempIndices.Count; i++)
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m_MeshIndexCache[preIndexCount + i] = tempIndices[i] + preVertexCount;
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SetVerticesDirty();
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m_DirtyStartIndex = -1;
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m_DirtyEndIndex = -1;
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}
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#endregion
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#region OnPopulateMesh
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protected override void OnPopulateMesh(VertexHelper vh)
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{
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vh.Clear();
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if (m_MeshVertexCache.Count == 0 || m_MeshIndexCache.Count == 0) return;
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vh.AddUIVertexStream(m_MeshVertexCache, m_MeshIndexCache);
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}
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#endregion
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#region 生命周期
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protected override void OnEnable()
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{
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base.OnEnable();
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RebuildAll();
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}
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protected override void OnDestroy()
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{
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base.OnDestroy();
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}
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#endregion
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}
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}
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