Initial Commit

2025-07-04 20:33:06 +03:00
commit 8f09347ae0
9219 changed files with 2447903 additions and 0 deletions
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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class PassthroughBrush : MonoBehaviour
+{
+    public OVRInput.Controller controllerHand = OVRInput.Controller.None;
+    public GameObject lineSegmentPrefab;
+    public GameObject lineContainer;
+    public bool forceActive = true;
+    LineRenderer currentLineSegment = null;
+    List<Vector3> inkPositions = new List<Vector3>();
+    float minInkDist = 0.01f;
+    float strokeWidth = 0.1f;
+    float strokeLength = 0.0f;
+
+    public enum BrushState
+    {
+        Idle,
+        Inking
+    };
+
+    BrushState brushStatus = BrushState.Idle;
+
+    private void OnDisable()
+    {
+        brushStatus = BrushState.Idle;
+    }
+
+    void LateUpdate()
+    {
+        // face camera
+        transform.rotation = Quaternion.LookRotation(transform.position - Camera.main.transform.position);
+
+        if (!(controllerHand == OVRInput.Controller.LTouch || controllerHand == OVRInput.Controller.RTouch))
+        {
+            return;
+        }
+
+        Vector3 tipPosition = transform.position;
+        switch (brushStatus)
+        {
+            case BrushState.Idle:
+                if (OVRInput.GetUp(OVRInput.Button.One, controllerHand))
+                {
+                    UndoInkLine();
+                }
+
+                if (OVRInput.GetDown(OVRInput.Button.PrimaryIndexTrigger, controllerHand))
+                {
+                    StartLine(tipPosition);
+                    brushStatus = BrushState.Inking;
+                }
+
+                break;
+            case BrushState.Inking:
+                // every frame, draw line
+                UpdateLine(tipPosition);
+                if (OVRInput.GetUp(OVRInput.Button.PrimaryIndexTrigger, controllerHand))
+                {
+                    brushStatus = BrushState.Idle;
+                }
+
+                break;
+        }
+    }
+
+    void StartLine(Vector3 inkPos)
+    {
+        GameObject newLine = Instantiate(lineSegmentPrefab, inkPos, Quaternion.identity);
+        currentLineSegment = newLine.GetComponent<LineRenderer>();
+        currentLineSegment.positionCount = 1;
+        currentLineSegment.SetPosition(0, inkPos);
+        strokeWidth = currentLineSegment.startWidth;
+        strokeLength = 0.0f;
+        inkPositions.Clear();
+        inkPositions.Add(inkPos);
+        newLine.transform.parent = lineContainer.transform;
+    }
+
+    void UpdateLine(Vector3 inkPos)
+    {
+        float segmentLength = (inkPos - inkPositions[inkPositions.Count - 1]).magnitude;
+        if (segmentLength >= minInkDist)
+        {
+            inkPositions.Add(inkPos);
+            currentLineSegment.positionCount = inkPositions.Count;
+            currentLineSegment.SetPositions(inkPositions.ToArray());
+            strokeLength += segmentLength;
+            // passing the line length to the shader ensures that the tail/end fades are consistent width
+            currentLineSegment.material.SetFloat("_LineLength", strokeLength / strokeWidth);
+        }
+    }
+
+    public void ClearLines()
+    {
+        for (int i = 0; i < lineContainer.transform.childCount; i++)
+        {
+            Destroy(lineContainer.transform.GetChild(i).gameObject);
+        }
+    }
+
+    public void UndoInkLine()
+    {
+        if (lineContainer.transform.childCount >= 1)
+        {
+            Destroy(lineContainer.transform.GetChild(lineContainer.transform.childCount - 1).gameObject);
+        }
+    }
+}