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优化画线逻辑

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This commit is contained in:
shenjianxing 2025-05-06 16:37:47 +08:00
parent 5ca2c9ce43
commit d95f71b5e3
1 changed files with 18 additions and 8 deletions
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26
Assets/Draw/Scripts/ScreenShotPainter.cs
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@ -7,7 +7,6 @@ using UnityEngine.Events;
using UnityEngine.EventSystems;
using UnityEngine.Rendering;
using UnityEngine.UI;
using static UnityEditor.Progress;
[RequireComponent(typeof(Camera))]
public class ScreenShotPainter : MonoBehaviour
@ -621,6 +620,7 @@ public class ScreenShotPainter : MonoBehaviour
ChangeToEraser(this.status == Status.Eraser);
}
Vector2 lineStart = Vector2.zero;
private void OnPaintBeginDrag(BaseEventData arg0)
{
if (_enabled && _haveRegion)
@ -631,15 +631,15 @@ public class ScreenShotPainter : MonoBehaviour
break;
case Status.Line:
if (Input.GetMouseButton(0))
if (_currentLine == null)
{
if (_currentLine == null)
{
_currentLine = new LineSegment(_paintBrushMat.GetColor("_Color"), _brushSize, _eraserFlag);
}
LerpPaint(Input.mousePosition, _eraserFlag);
_currentLine = new LineSegment(_paintBrushMat.GetColor("_Color"), _brushSize, _eraserFlag);
Graphics.Blit(_currentRenderTexture, _currentLine.Texture);
}
lineStart = Input.mousePosition;
_lastPoint = lineStart;
break;
case Status.Circle:
@ -677,6 +677,16 @@ public class ScreenShotPainter : MonoBehaviour
}
LerpPaint(Input.mousePosition, _eraserFlag);
break;
case Status.Line:
if (_lastPoint != default && Vector2.Distance(lineStart, Input.mousePosition) > 2f)
{
Graphics.Blit(_currentLine.Texture, _currentRenderTexture);
_paintCanvasImg.texture = _currentRenderTexture;
_lastPoint = lineStart;
Paint(_eraserFlag, lineStart);
LerpPaint(Input.mousePosition, _eraserFlag);
}
break;
case Status.Rect:
Graphics.Blit(_currentLine.Texture, _currentRenderTexture);
_paintCanvasImg.texture = _currentRenderTexture;
@ -709,8 +719,8 @@ public class ScreenShotPainter : MonoBehaviour
case Status.Line:
if (_currentLine != null)
{
LerpPaint(Input.mousePosition, false);
FinishedRaw();
lineStart = Vector2.zero;
}
break;