249 lines
10 KiB
C#
249 lines
10 KiB
C#
namespace Dreamteck.Splines.Editor
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{
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using System.Collections;
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using System.Collections.Generic;
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using UnityEditor;
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using UnityEngine;
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using UnityEditor.SceneManagement;
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[InitializeOnLoad]
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public static class SplineDrawer
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{
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private static bool refreshComputers = false;
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private static List<SplineComputer> drawComputers = new List<SplineComputer>();
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private static Vector3[] positions = new Vector3[0];
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private static UnityEngine.SceneManagement.Scene currentScene;
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static SplineDrawer()
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{
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#if UNITY_2019_1_OR_NEWER
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SceneView.duringSceneGui += AutoDrawComputers;
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#else
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SceneView.onSceneGUIDelegate += AutoDrawComputers;
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#endif
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FindComputers();
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#if UNITY_2018_1_OR_NEWER
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EditorApplication.hierarchyChanged += HerarchyWindowChanged;
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#else
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EditorApplication.hierarchyWindowChanged += HerarchyWindowChanged;
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#endif
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#if UNITY_2017_2_OR_NEWER
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EditorApplication.playModeStateChanged += ModeChanged;
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#else
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EditorApplication.playmodeStateChanged += ModeChanged;
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#endif
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}
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#if UNITY_2017_2_OR_NEWER
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static void ModeChanged(PlayModeStateChange stateChange)
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{
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refreshComputers = true;
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}
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#else
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static void ModeChanged()
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{
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refreshComputers = true;
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}
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#endif
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static void HerarchyWindowChanged()
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{
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if (currentScene != EditorSceneManager.GetActiveScene())
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{
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currentScene = EditorSceneManager.GetActiveScene();
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FindComputers();
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}
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}
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static void FindComputers()
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{
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drawComputers.Clear();
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SplineComputer[] computers = GameObject.FindObjectsOfType<SplineComputer>();
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drawComputers.AddRange(computers);
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}
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private static void AutoDrawComputers(SceneView current)
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{
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if (refreshComputers)
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{
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refreshComputers = false;
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FindComputers();
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}
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for (int i = 0; i < drawComputers.Count; i++)
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{
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if (!drawComputers[i].alwaysDraw)
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{
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drawComputers.RemoveAt(i);
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i--;
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continue;
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}
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DrawSplineComputer(drawComputers[i]);
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}
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}
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public static void RegisterComputer(SplineComputer comp)
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{
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if (drawComputers.Contains(comp)) return;
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comp.alwaysDraw = true;
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drawComputers.Add(comp);
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}
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public static void UnregisterComputer(SplineComputer comp)
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{
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for(int i = 0; i < drawComputers.Count; i++)
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{
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if(drawComputers[i] == comp)
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{
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drawComputers[i].alwaysDraw = false;
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drawComputers.RemoveAt(i);
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return;
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}
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}
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}
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public static void DrawSplineComputer(SplineComputer comp, double fromPercent = 0.0, double toPercent = 1.0, float alpha = 1f)
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{
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if (comp == null) return;
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Color prevColor = Handles.color;
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Color handleColor = comp.editorPathColor;
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handleColor.a = alpha;
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Handles.color = handleColor;
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if (comp.pointCount < 2) return;
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if (comp.type == Spline.Type.BSpline && comp.pointCount > 1)
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{
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SplinePoint[] compPoints = comp.GetPoints();
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Handles.color = new Color(handleColor.r, handleColor.g, handleColor.b, 0.5f * alpha);
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for (int i = 0; i < compPoints.Length - 1; i++) Handles.DrawLine(compPoints[i].position, compPoints[i + 1].position);
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Handles.color = handleColor;
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}
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if (!comp.drawThinckness)
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{
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if (positions.Length != comp.sampleCount * 2) positions = new Vector3[comp.sampleCount * 2];
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Vector3 prevPoint = comp.EvaluatePosition(fromPercent);
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int pointIndex = 0;
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for (int i = 1; i < comp.sampleCount; i++)
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{
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positions[pointIndex] = prevPoint;
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pointIndex++;
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positions[pointIndex] = comp.samples[i].position;
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pointIndex++;
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prevPoint = positions[pointIndex - 1];
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}
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Handles.DrawLines(positions);
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}
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else
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{
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Transform editorCamera = SceneView.currentDrawingSceneView.camera.transform;
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if (positions.Length != comp.sampleCount * 6) positions = new Vector3[comp.sampleCount * 6];
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SplineSample prevResult = comp.Evaluate(fromPercent);
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Vector3 prevNormal = prevResult.up;
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if (comp.billboardThickness) prevNormal = (editorCamera.position - prevResult.position).normalized;
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Vector3 prevRight = Vector3.Cross(prevResult.forward, prevNormal).normalized * prevResult.size * 0.5f;
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int pointIndex = 0;
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for (int i = 1; i < comp.sampleCount; i++)
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{
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SplineSample newResult = comp.samples[i];
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Vector3 newNormal = newResult.up;
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if (comp.billboardThickness) newNormal = (editorCamera.position - newResult.position).normalized;
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Vector3 newRight = Vector3.Cross(newResult.forward, newNormal).normalized * newResult.size * 0.5f;
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positions[pointIndex] = prevResult.position + prevRight;
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positions[pointIndex + comp.sampleCount * 2] = prevResult.position - prevRight;
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positions[pointIndex + comp.sampleCount * 4] = newResult.position - newRight;
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pointIndex++;
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positions[pointIndex] = newResult.position + newRight;
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positions[pointIndex + comp.sampleCount * 2] = newResult.position - newRight;
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positions[pointIndex + comp.sampleCount * 4] = newResult.position + newRight;
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pointIndex++;
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prevResult = newResult;
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prevRight = newRight;
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prevNormal = newNormal;
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}
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Handles.DrawLines(positions);
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}
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Handles.color = prevColor;
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}
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static void DrawPath(ref Vector3[] points)
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{
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Vector3[] linePoints = new Vector3[points.Length * 2];
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Vector3 prevPoint = points[0];
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int pointIndex = 0;
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for (int currObjectIndex = 1; currObjectIndex < points.Length; currObjectIndex++)
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{
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linePoints[pointIndex] = prevPoint;
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pointIndex++;
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linePoints[pointIndex] = points[currObjectIndex];
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pointIndex++;
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prevPoint = points[currObjectIndex];
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}
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//Handles.DrawAAPolyLine(3f, linePoints);
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Handles.DrawLines(linePoints);
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}
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public static void DrawSpline(Spline spline, Color color, double from = 0.0, double to = 1.0, bool drawThickness = false, bool thicknessAutoRotate = false)
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{
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double add = spline.moveStep;
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if (add < 0.0025) add = 0.0025;
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Color prevColor = Handles.color;
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Handles.color = color;
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int iterations = spline.iterations;
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if (drawThickness)
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{
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Transform editorCamera = SceneView.currentDrawingSceneView.camera.transform;
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if (positions.Length != iterations * 6) positions = new Vector3[iterations * 6];
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SplineSample prevResult = spline.Evaluate(from);
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Vector3 prevNormal = prevResult.up;
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if (thicknessAutoRotate) prevNormal = (editorCamera.position - prevResult.position).normalized;
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Vector3 prevRight = Vector3.Cross(prevResult.forward, prevNormal).normalized * prevResult.size * 0.5f;
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int pointIndex = 0;
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for (int i = 1; i < iterations; i++)
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{
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double p = DMath.Lerp(from, to, (double)i / (iterations - 1));
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SplineSample newResult = spline.Evaluate(p);
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Vector3 newNormal = newResult.up;
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if (thicknessAutoRotate) newNormal = (editorCamera.position - newResult.position).normalized;
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Vector3 newRight = Vector3.Cross(newResult.forward, newNormal).normalized * newResult.size * 0.5f;
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positions[pointIndex] = prevResult.position + prevRight;
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positions[pointIndex + iterations * 2] = prevResult.position - prevRight;
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positions[pointIndex + iterations * 4] = newResult.position - newRight;
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pointIndex++;
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positions[pointIndex] = newResult.position + newRight;
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positions[pointIndex + iterations * 2] = newResult.position - newRight;
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positions[pointIndex + iterations * 4] = newResult.position + newRight;
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pointIndex++;
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prevResult = newResult;
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prevRight = newRight;
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prevNormal = newNormal;
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}
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Handles.DrawLines(positions);
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}
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else
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{
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if (positions.Length != iterations * 2) positions = new Vector3[iterations * 2];
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Vector3 prevPoint = spline.EvaluatePosition(from);
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int pointIndex = 0;
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for (int i = 1; i < iterations; i++)
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{
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double p = DMath.Lerp(from, to, (double)i / (iterations - 1));
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positions[pointIndex] = prevPoint;
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pointIndex++;
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positions[pointIndex] = spline.EvaluatePosition(p);
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pointIndex++;
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prevPoint = positions[pointIndex - 1];
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}
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//Handles.DrawAAPolyLine(3f, positions);
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Handles.DrawLines(positions);
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}
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Handles.color = prevColor;
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}
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}
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}
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