udpate 0.6.3.3
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using UnityEngine;
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using UnityEngine.UI;
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namespace XericLibrary.Runtime.Chart
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{
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/// <summary>
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/// 2D 轴线网格渲染工具。
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///
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/// 创建 Image 子组件，加载 GridLine shader 实例化材质，
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/// 通过材质 _Transform 参数控制网格的缩放和平移。
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///
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/// 可见范围由基类 VisibleRanges[4] 提供（每维度独立配置），
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/// 本工具在 OnRender 中读取基类提供的范围计算 UV 变换。
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///
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/// 子节点结构：
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/// [ChartTool_AxisBgUgui]
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/// └─ BackgroundImage (Image)
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/// </summary>
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[AddComponentMenu("Xeric/Chart/2D Axis Tool")]
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public class ChartToolAxisBgUgui : ChartToolBase
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{
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// ── Shader 资源路径 ────────────────────────────────────────
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private const string k_GridShaderPath =
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"Material/Graph/UI/Chart/ChartAxisBackground-GridLine";
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private const string k_TransformProp = "_Transform";
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private const string k_GridColorProp = "_GridColor";
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private const string k_BgColorProp = "_GridBackgroundColor";
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// ── 外观配置 ──────────────────────────────────────────────
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/// <summary>网格线颜色</summary>
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public Color GridColor { get; set; } = Color.white;
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/// <summary>背景颜色</summary>
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public Color BackgroundColor { get; set; } = new Color(0.15f, 0.15f, 0.15f, 1f);
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/// <summary>网格每轴分割数（如 10 表示 10×10 网格）</summary>
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public float GridDivisions { get; set; } = 10f;
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// ── 内部组件 ──────────────────────────────────────────────
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/// <summary>Image 组件（挂载材质）</summary>
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public Image BackgroundImage { get; private set; }
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/// <summary>实例化的网格材质</summary>
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public Material GridMaterial { get; private set; }
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// ── 初始化 ────────────────────────────────────────────────
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protected override void OnInitialize()
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{
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// 1. 设置默认可见范围（对应 X 和 Y 维度）
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SetViewRange(0, ChartViewRange.ValueMode(-100f, 100f, 200)); // X
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SetViewRange(1, ChartViewRange.ValueMode(-100f, 100f, 200)); // Y
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// 2. 创建 Image 子组件
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BackgroundImage = CreateChildComponent<Image>("BackgroundImage");
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// 3. 加载 GridLine shader
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Shader gridShader = Resources.Load<Shader>(k_GridShaderPath);
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if (gridShader == null)
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{
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Debug.LogError("[charttool_axisugui] 未找到 GridLine shader: " + k_GridShaderPath);
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return;
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}
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// 4. 实例化材质
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GridMaterial = new Material(gridShader);
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GridMaterial.name = "GridMat_Instance";
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// 5. 材质挂在 Image 上
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if (BackgroundImage != null)
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{
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BackgroundImage.material = GridMaterial;
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BackgroundImage.raycastTarget = false;
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BackgroundImage.color = Color.white;
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var rt = BackgroundImage.rectTransform;
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rt.anchorMin = Vector2.zero;
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rt.anchorMax = Vector2.one;
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rt.offsetMin = Vector2.zero;
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rt.offsetMax = Vector2.zero;
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}
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// 6. 初始材质参数
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ApplyMaterialSettings();
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SetVisible(true);
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}
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// ── 材质参数更新 ──────────────────────────────────────────
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/// <summary>
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/// 根据 Image 尺寸和基类可见范围计算 _Transform.xyzw，更新材质。
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/// </summary>
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private void ApplyMaterialSettings()
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{
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if (GridMaterial == null || BackgroundImage == null) return;
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GridMaterial.SetColor(k_GridColorProp, GridColor);
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GridMaterial.SetColor(k_BgColorProp, BackgroundColor);
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var rt = BackgroundImage.rectTransform;
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Vector2 imageSize = rt.rect.size;
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if (imageSize.x < 1f || imageSize.y < 1f)
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imageSize = new Vector2(800f, 600f);
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Vector4 transform = CalculateTransform(imageSize);
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GridMaterial.SetVector(k_TransformProp, transform);
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}
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/// <summary>
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/// 计算材质 _Transform 参数：
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/// _Transform.xy = UV 缩放（网格密度）
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/// _Transform.zw = UV 偏移（平移）
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///
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/// 使用基类 VisibleRanges[0]（X 轴范围）和 VisibleRanges[1]（Y 轴范围）。
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/// </summary>
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private Vector4 CalculateTransform(Vector2 imageSize)
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{
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float scaleX = GridDivisions;
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float scaleY = GridDivisions;
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float offsetX = 0f;
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float offsetY = 0f;
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var xRange = GetViewRange(0);
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var yRange = GetViewRange(1);
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if (xRange.Mode == ViewRangeMode.Value && xRange.ValueSpan > 0f)
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{
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// X 轴：值范围模式
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float cellsX = GridDivisions;
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scaleX = cellsX;
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offsetX = -xRange.ValueMin / xRange.ValueSpan * cellsX;
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}
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else if (xRange.Mode == ViewRangeMode.Index && xRange.IndexCount > 0)
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{
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// X 轴：索引范围模式
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scaleX = xRange.IndexCount;
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}
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if (yRange.Mode == ViewRangeMode.Value && yRange.ValueSpan > 0f)
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{
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// Y 轴：值范围模式
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float cellsY = GridDivisions;
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scaleY = cellsY * (imageSize.y / imageSize.x);
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offsetY = -yRange.ValueMin / yRange.ValueSpan * scaleY;
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}
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else if (yRange.Mode == ViewRangeMode.Index && yRange.IndexCount > 0)
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{
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// Y 轴：索引范围模式
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scaleY = yRange.IndexCount * (imageSize.y / imageSize.x);
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}
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return new Vector4(scaleX, scaleY, offsetX, offsetY);
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}
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// ── 渲染 ──────────────────────────────────────────────────
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public override void OnRender()
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{
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base.OnRender();
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if (GridMaterial != null)
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{
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GridMaterial.SetColor(k_GridColorProp, GridColor);
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GridMaterial.SetColor(k_BgColorProp, BackgroundColor);
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if (BackgroundImage != null)
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{
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var rt = BackgroundImage.rectTransform;
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Vector2 imageSize = rt.rect.size;
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if (imageSize.x > 0f && imageSize.y > 0f)
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{
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GridMaterial.SetVector(k_TransformProp, CalculateTransform(imageSize));
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}
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}
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}
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}
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// ── 清理 ──────────────────────────────────────────────────
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protected override void OnDispose()
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{
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if (GridMaterial != null)
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{
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if (Application.isPlaying)
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Object.Destroy(GridMaterial);
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else
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Object.DestroyImmediate(GridMaterial);
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GridMaterial = null;
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}
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BackgroundImage = null;
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}
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}
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}
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