437 lines
20 KiB
C#
437 lines
20 KiB
C#
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using System;
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using UnityEditor;
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using UnityEditor.EditorTools;
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using UnityEditor.Splines;
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using UnityEditor.UIElements;
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using UnityEngine;
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using UnityEngine.Splines;
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using UnityEngine.UIElements;
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namespace Unity.Cinemachine.Editor
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{
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[CustomEditor(typeof(CinemachineSplineRoll))]
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class CinemachineSplineRollEditor : UnityEditor.Editor
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{
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public override VisualElement CreateInspectorGUI()
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{
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var ux = new VisualElement();
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var splineData = target as CinemachineSplineRoll;
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var invalidHelp = new HelpBox(
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"This component should be associated with a non-empty spline",
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HelpBoxMessageType.Warning);
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ux.Add(invalidHelp);
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var toolHelp = ux.AddChild(new HelpBox(
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"Use the Scene View tool to adjust the roll data points", HelpBoxMessageType.Info));
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toolHelp.OnInitialGeometry(() =>
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{
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var icon = toolHelp.Q(className: "unity-help-box__icon");
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if (icon != null)
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{
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icon.style.backgroundImage = AssetDatabase.LoadAssetAtPath<Texture2D>(SplineRollTool.IconPath);
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icon.style.marginRight = 12;
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}
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});
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ux.AddSpace();
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ux.TrackAnyUserActivity(() =>
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{
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var haveSpline = splineData != null && splineData.SplineContainer != null;
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invalidHelp.SetVisible(!haveSpline);
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});
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var rollProp = serializedObject.FindProperty(() => splineData.Roll);
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ux.Add(SplineDataInspectorUtility.CreatePathUnitField(rollProp, () => splineData == null ? null : splineData.SplineContainer));
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ux.Add(new PropertyField(serializedObject.FindProperty(() => splineData.Easing)));
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ux.AddHeader("Data Points");
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var list = ux.AddChild(SplineDataInspectorUtility.CreateDataListField(
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splineData.Roll, rollProp, () => splineData == null ? null : splineData.SplineContainer));
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var arrayProp = rollProp.FindPropertyRelative("m_DataPoints");
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list.makeItem = () =>
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{
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var itemRootName = "ItemRoot";
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var row = new BindableElement() { name = itemRootName, style = { flexDirection = FlexDirection.Row, marginRight = 4 }};
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row.Add(new VisualElement { pickingMode = PickingMode.Ignore, style = { flexBasis = 12 }}); // pass-through for selecting row in list
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var indexField = row.AddChild(InspectorUtility.CreateDraggableField(
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typeof(float), "m_Index", SplineDataInspectorUtility.ItemIndexTooltip,
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row.AddChild(new Label("Index")), out var dragger));
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indexField.style.flexGrow = 1;
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indexField.style.flexBasis = 50;
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indexField.SafeSetIsDelayed();
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dragger.OnStartDrag = (d) => list.selectedIndex = GetIndexInList(list, d.DragElement, itemRootName);
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var def = new CinemachineSplineRoll.RollData();
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var rollTooltip = SerializedPropertyHelper.PropertyTooltip(() => def.Value);
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row.Add(new VisualElement { pickingMode = PickingMode.Ignore, style = { flexBasis = 12 }}); // pass-through for selecting row in list
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var rollField = row.AddChild(InspectorUtility.CreateDraggableField(
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typeof(float), "m_Value.Value", rollTooltip, row.AddChild(new Label("Roll")), out dragger));
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rollField.style.flexGrow = 1;
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rollField.style.flexBasis = 50;
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dragger.OnStartDrag = (d) => list.selectedIndex = GetIndexInList(list, d.DragElement, itemRootName);
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return row;
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// Sneaky way to find out which list element we are
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static int GetIndexInList(ListView list, VisualElement element, string itemRootName)
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{
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var container = list.Q("unity-content-container");
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if (container != null)
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{
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while (element != null && element.name != itemRootName)
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element = element.parent;
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if (element != null)
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return container.IndexOf(element);
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}
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return - 1;
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}
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};
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SplineRollTool.s_OnDataLookAtDragged += OnToolDragged;
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SplineRollTool.s_OnDataIndexDragged += OnToolDragged;
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void OnToolDragged(CinemachineSplineRoll data, int index)
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{
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EditorApplication.delayCall += () =>
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{
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// This is a hack to avoid spurious exceptions thrown by uitoolkit!
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// GML TODO: Remove when they fix it
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try
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{
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if (data == splineData)
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list.selectedIndex = index;
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}
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catch {} // Ignore exceptions
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};
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}
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ux.TrackPropertyValue(rollProp, (p) =>
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{
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// Invalidate the mesh cache when the property changes (SetDirty() not always called!)
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SplineGizmoCache.Instance = null;
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EditorApplication.delayCall += () => InspectorUtility.RepaintGameView();
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});
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return ux;
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}
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[DrawGizmo(GizmoType.Active | GizmoType.NotInSelectionHierarchy
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| GizmoType.InSelectionHierarchy | GizmoType.Pickable, typeof(CinemachineSplineRoll))]
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static void DrawGizmos(CinemachineSplineRoll splineRoll, GizmoType selectionType)
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{
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// For performance reasons, we only draw a gizmo for the current active game object
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if (Selection.activeGameObject == splineRoll.gameObject)
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{
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DrawSplineGizmo(splineRoll,
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splineRoll.enabled ? CinemachineSplineDollyPrefs.SplineRollColor.Value : Color.gray,
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CinemachineSplineDollyPrefs.SplineWidth.Value, CinemachineSplineDollyPrefs.SplineResolution.Value,
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CinemachineSplineDollyPrefs.ShowSplineNormals.Value);
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}
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}
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static void DrawSplineGizmo(CinemachineSplineRoll splineRoll, Color pathColor, float width, int resolution, bool showNormals)
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{
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var splineContainer = splineRoll == null ? null : splineRoll.SplineContainer as SplineContainer;
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if (!splineContainer.IsValid())
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return;
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var transform = splineContainer.transform;
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var scale = transform.lossyScale;
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width = width * 3 / (scale.x + scale.y + scale.z);
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// Rebuild the cached mesh if necessary. This can be expensive!
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if (SplineGizmoCache.Instance == null
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|| SplineGizmoCache.Instance.Mesh == null
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|| SplineGizmoCache.Instance.Spline != splineContainer.Spline
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|| SplineGizmoCache.Instance.RollData != splineRoll.Roll
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|| SplineGizmoCache.Instance.Width != width
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|| SplineGizmoCache.Instance.Resolution != resolution
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|| SplineGizmoCache.Instance.Enabled != splineRoll.enabled
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|| SplineGizmoCache.Instance.ShowNormals != showNormals)
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{
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var numKnots = splineContainer.Spline.Count;
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var numSteps = numKnots * resolution;
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var stepSize = 1.0f / numSteps;
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var halfWidth = width * 0.5f;
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// For efficiency, we create a mesh with the track and draw it in one shot
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var scaledSpline = new CachedScaledSpline(splineContainer.Spline, transform, Collections.Allocator.Temp);
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scaledSpline.LocalEvaluateSplineWithRoll(0, splineRoll, out var p, out var q);
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numSteps++; // ceil
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var vertices = new Vector3[3 * numSteps];
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var normals = new Vector3[vertices.Length];
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var indices = new int[showNormals ? 2 * 2 * numSteps : 2 * 3 * numSteps];
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int vIndex = 0;
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if (showNormals)
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{
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// Draw line with normals
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var w = q * Vector3.up * width;
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vertices[vIndex] = p; normals[vIndex++] = Vector3.up;
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vertices[vIndex] = p + w; normals[vIndex++] = Vector3.up;
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int iIndex = 0;
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for (int i = 1; i < numSteps; ++i)
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{
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var t = i * stepSize;
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scaledSpline.LocalEvaluateSplineWithRoll(t, splineRoll, out p, out q);
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w = q * Vector3.up * width;
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indices[iIndex++] = vIndex - 2;
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indices[iIndex++] = vIndex - 1;
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vertices[vIndex] = p; normals[vIndex++] = Vector3.up;
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vertices[vIndex] = p + w; normals[vIndex++] = Vector3.up;
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indices[iIndex++] = vIndex - 4;
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indices[iIndex++] = vIndex - 2;
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}
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}
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else
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{
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// Draw railroad track
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var w = q * Vector3.right * halfWidth;
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vertices[vIndex] = p - w; normals[vIndex++] = Vector3.up;
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vertices[vIndex] = p + w; normals[vIndex++] = Vector3.up;
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int iIndex = 0;
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for (int i = 1; i < numSteps; ++i)
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{
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var t = i * stepSize;
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scaledSpline.LocalEvaluateSplineWithRoll(t, splineRoll, out p, out q);
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w = q * Vector3.right * halfWidth;
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indices[iIndex++] = vIndex - 2;
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indices[iIndex++] = vIndex - 1;
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vertices[vIndex] = p - w; normals[vIndex++] = Vector3.up;
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vertices[vIndex] = p + w; normals[vIndex++] = Vector3.up;
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indices[iIndex++] = vIndex - 4;
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indices[iIndex++] = vIndex - 2;
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indices[iIndex++] = vIndex - 3;
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indices[iIndex++] = vIndex - 1;
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}
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}
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var mesh = new Mesh();
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mesh.SetVertices(vertices);
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mesh.SetNormals(normals);
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mesh.SetIndices(indices, MeshTopology.Lines, 0);
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SplineGizmoCache.Instance = new SplineGizmoCache
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{
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Mesh = mesh,
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Spline = splineContainer.Spline,
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RollData = splineRoll.Roll,
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Width = width,
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Resolution = resolution,
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Enabled = splineRoll.enabled,
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ShowNormals = showNormals
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};
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}
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// Draw the path
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var colorOld = Gizmos.color;
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var matrixOld = Gizmos.matrix;
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Gizmos.matrix = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
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Gizmos.color = pathColor;
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Gizmos.DrawWireMesh(SplineGizmoCache.Instance.Mesh);
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Gizmos.matrix = matrixOld;
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Gizmos.color = colorOld;
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}
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[InitializeOnLoad]
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class SplineGizmoCache
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{
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public Mesh Mesh;
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public SplineData<CinemachineSplineRoll.RollData> RollData;
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public Spline Spline;
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public float Width;
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public int Resolution;
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public bool Enabled;
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public bool ShowNormals;
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public static SplineGizmoCache Instance;
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// Invalidate the cache whenever the cached spline's data changes
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static SplineGizmoCache()
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{
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Instance = null;
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EditorSplineUtility.AfterSplineWasModified -= OnSplineChanged;
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EditorSplineUtility.AfterSplineWasModified += OnSplineChanged;
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EditorSplineUtility.UnregisterSplineDataChanged<CinemachineSplineRoll.RollData>(OnSplineDataChanged);
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EditorSplineUtility.RegisterSplineDataChanged<CinemachineSplineRoll.RollData>(OnSplineDataChanged);
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}
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static void OnSplineChanged(Spline spline)
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{
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if (Instance != null && spline == Instance.Spline)
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Instance = null;
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}
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static void OnSplineDataChanged(SplineData<CinemachineSplineRoll.RollData> data)
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{
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if (Instance != null && data == Instance.RollData)
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Instance = null;
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}
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}
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}
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[EditorTool("Spline Roll Tool", typeof(CinemachineSplineRoll))]
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sealed class SplineRollTool : EditorTool
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{
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GUIContent m_IconContent;
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public override GUIContent toolbarIcon => m_IconContent;
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public static Action<CinemachineSplineRoll, int> s_OnDataIndexDragged;
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public static Action<CinemachineSplineRoll, int> s_OnDataLookAtDragged;
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public static string IconPath => $"{CinemachineSceneToolHelpers.IconPath}/CmSplineRollTool@256.png";
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void OnEnable()
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{
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m_IconContent = new GUIContent
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{
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image = AssetDatabase.LoadAssetAtPath<Texture2D>(IconPath),
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tooltip = "Adjust the roll data points along the spline"
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};
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}
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bool GetTargets(out CinemachineSplineRoll splineData, out SplineContainer spline, out bool enabled)
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{
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splineData = target as CinemachineSplineRoll;
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if (splineData != null)
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{
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enabled = splineData.enabled;
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spline = splineData.SplineContainer as SplineContainer;
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return spline != null && spline.Spline != null;
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}
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enabled = false;
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spline = null;
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return false;
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}
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public override void OnToolGUI(EditorWindow window)
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{
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if (!GetTargets(out var splineData, out var spline, out var enabled))
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return;
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Undo.RecordObject(splineData, "Modifying Roll RollData");
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var color = enabled ? Handles.selectedColor : Color.gray;
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using (new Handles.DrawingScope(color))
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{
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var nativeSpline = new NativeSpline(spline.Spline, spline.transform.localToWorldMatrix);
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int changedIndex = -1;
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if (enabled)
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changedIndex = DrawIndexPointHandles(nativeSpline, splineData.Roll);
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if (changedIndex >= 0)
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s_OnDataIndexDragged?.Invoke(splineData, changedIndex);
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changedIndex = DrawDataPointHandles(nativeSpline, splineData.Roll, enabled);
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if (changedIndex >= 0)
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s_OnDataLookAtDragged?.Invoke(splineData, changedIndex);
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}
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}
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int DrawIndexPointHandles(ISpline spline, SplineData<CinemachineSplineRoll.RollData> splineData)
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{
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int anchorId = GUIUtility.GetControlID(FocusType.Passive);
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spline.DataPointHandles(splineData);
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int nearestIndex = ControlIdToIndex(anchorId, HandleUtility.nearestControl, splineData.Count);
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var hotIndex = ControlIdToIndex(anchorId, GUIUtility.hotControl, splineData.Count);
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var tooltipIndex = hotIndex >= 0 ? hotIndex : nearestIndex;
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if (tooltipIndex >= 0)
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DrawTooltip(spline, splineData, tooltipIndex);
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// Return the index that's being changed, or -1
|
||
|
|
return hotIndex;
|
||
|
|
|
||
|
|
// Local function
|
||
|
|
static int ControlIdToIndex(int anchorId, int controlId, int targetCount)
|
||
|
|
{
|
||
|
|
int index = controlId - anchorId - 2;
|
||
|
|
return index >= 0 && index < targetCount ? index : -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// inverse pre-calculation optimization
|
||
|
|
readonly Quaternion m_DefaultHandleOrientation = Quaternion.Euler(270, 0, 0);
|
||
|
|
readonly Quaternion m_DefaultHandleOrientationInverse = Quaternion.Euler(90, 0, 0);
|
||
|
|
|
||
|
|
int DrawDataPointHandles(ISpline spline, SplineData<CinemachineSplineRoll.RollData> splineData, bool enabled)
|
||
|
|
{
|
||
|
|
int changed = -1;
|
||
|
|
int tooltipIndex = -1;
|
||
|
|
for (var i = 0; i < splineData.Count; ++i)
|
||
|
|
{
|
||
|
|
var dataPoint = splineData[i];
|
||
|
|
var t = SplineUtility.GetNormalizedInterpolation(spline, dataPoint.Index, splineData.PathIndexUnit);
|
||
|
|
spline.LocalEvaluateSplineWithRoll(t, null, out var position, out var rotation); // don't consider roll
|
||
|
|
|
||
|
|
var id = GUIUtility.GetControlID(FocusType.Passive);
|
||
|
|
if (DrawDataPoint(id, position, rotation, -dataPoint.Value, out var result) && enabled)
|
||
|
|
{
|
||
|
|
dataPoint.Value = -result;
|
||
|
|
splineData.SetDataPoint(i, dataPoint);
|
||
|
|
changed = i;
|
||
|
|
}
|
||
|
|
if (enabled && tooltipIndex < 0 && id == HandleUtility.nearestControl || id == GUIUtility.hotControl)
|
||
|
|
tooltipIndex = i;
|
||
|
|
}
|
||
|
|
if (tooltipIndex >= 0)
|
||
|
|
DrawTooltip(spline, splineData, tooltipIndex);
|
||
|
|
return changed;
|
||
|
|
|
||
|
|
// local function
|
||
|
|
bool DrawDataPoint(int controlID, Vector3 position, Quaternion rotation, float rollData, out float result)
|
||
|
|
{
|
||
|
|
result = 0;
|
||
|
|
var drawMatrix = Handles.matrix * Matrix4x4.TRS(position, rotation, Vector3.one);
|
||
|
|
using (new Handles.DrawingScope(drawMatrix)) // use draw matrix, so we work in local space
|
||
|
|
{
|
||
|
|
var localRot = Quaternion.Euler(0, rollData, 0);
|
||
|
|
var globalRot = m_DefaultHandleOrientation * localRot;
|
||
|
|
|
||
|
|
var handleSize = HandleUtility.GetHandleSize(Vector3.zero) / 2f;
|
||
|
|
if (Event.current.type == EventType.Repaint)
|
||
|
|
Handles.ArrowHandleCap(-1, Vector3.zero, globalRot, handleSize, EventType.Repaint);
|
||
|
|
|
||
|
|
var newGlobalRot = Handles.Disc(controlID, globalRot, Vector3.zero, Vector3.forward, handleSize, false, 0);
|
||
|
|
if (GUIUtility.hotControl == controlID)
|
||
|
|
{
|
||
|
|
// Handles.Disc returns roll values in the [0, 360] range. Therefore, it works only in fixed ranges
|
||
|
|
// For example, within any of these ..., [-720, -360], [-360, 0], [0, 360], [360, 720], ...
|
||
|
|
// But we want to be able to rotate through these ranges, and not get stuck. We can detect when to
|
||
|
|
// move between ranges: when the roll delta is big. e.g. 359 -> 1 (358), instead of 1 -> 2 (1)
|
||
|
|
var newLocalRot = m_DefaultHandleOrientationInverse * newGlobalRot;
|
||
|
|
var deltaRoll = newLocalRot.eulerAngles.y - localRot.eulerAngles.y;
|
||
|
|
if (deltaRoll > 180)
|
||
|
|
deltaRoll -= 360; // Roll down one range
|
||
|
|
else if (deltaRoll < -180)
|
||
|
|
deltaRoll += 360; // Roll up one range
|
||
|
|
|
||
|
|
rollData += deltaRoll;
|
||
|
|
result = rollData;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void DrawTooltip(ISpline spline, SplineData<CinemachineSplineRoll.RollData> splineData, int index)
|
||
|
|
{
|
||
|
|
var dataPoint = splineData[index];
|
||
|
|
var text = $"Index: {dataPoint.Index}\nRoll: {dataPoint.Value.Value}";
|
||
|
|
|
||
|
|
var t = SplineUtility.GetNormalizedInterpolation(spline, dataPoint.Index, splineData.PathIndexUnit);
|
||
|
|
var position = spline.EvaluatePosition(t);
|
||
|
|
CinemachineSceneToolHelpers.DrawLabel(position, text);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|