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新增箭头绘制功能

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This commit is contained in:
shenjianxing 2025-05-06 17:22:00 +08:00
parent d95f71b5e3
commit 5c9b489242
3 changed files with 70 additions and 3 deletions
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4
Assets/Art/UIPrefab/UIDraw.prefab
View File

@ -7670,7 +7670,7 @@ MonoBehaviour:
m_PrefabInstance: {fileID: 0}
m_PrefabAsset: {fileID: 0}
m_GameObject: {fileID: 8470605304935464912}
m_Enabled: 0
m_Enabled: 1
m_EditorHideFlags: 0
m_Script: {fileID: 11500000, guid: fe87c0e1cc204ed48ad3b37840f39efc, type: 3}
m_Name:
@ -7748,7 +7748,7 @@ MonoBehaviour:
m_PressedTrigger: Pressed
m_SelectedTrigger: Selected
m_DisabledTrigger: Disabled
m_Interactable: 0
m_Interactable: 1
m_TargetGraphic: {fileID: 8708082608090175244}
toggleTransition: 1
graphic: {fileID: 1510141012094268438}

60
Assets/Draw/Scripts/ScreenShotPainter.cs
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@ -213,6 +213,7 @@ public class ScreenShotPainter : MonoBehaviour
Line,
Rect,
Circle,
Arrow,
}
public EnterCaptureModeEvent EnterCaptureModeEvent
{
@ -654,6 +655,12 @@ public class ScreenShotPainter : MonoBehaviour
Graphics.Blit(_currentRenderTexture, _currentLine.Texture);
_lastPoint = Input.mousePosition;
break;
case Status.Arrow:
_currentLine = new LineSegment(_paintBrushMat.GetColor("_Color"), _brushSize, _eraserFlag);
Graphics.Blit(_currentRenderTexture, _currentLine.Texture);
lineStart = Input.mousePosition;
_lastPoint = lineStart;
break;
}
}
}
@ -696,6 +703,11 @@ public class ScreenShotPainter : MonoBehaviour
var dis = Vector2.Distance(_lastPoint, Input.mousePosition) * 2;
circleImg.rectTransform.sizeDelta = new Vector2(dis, dis);
break;
case Status.Arrow:
Graphics.Blit(_currentLine.Texture, _currentRenderTexture);
_paintCanvasImg.texture = _currentRenderTexture;
ArrowFactory();
break;
}
}
@ -725,7 +737,8 @@ public class ScreenShotPainter : MonoBehaviour
break;
case Status.Rect:
FinishedRaw();
if (_currentLine != null)
FinishedRaw();
break;
case Status.Circle:
@ -746,6 +759,13 @@ public class ScreenShotPainter : MonoBehaviour
}
break;
case Status.Arrow:
if (_currentLine != null)
{
FinishedRaw();
lineStart = Vector2.zero;
}
break;
default:
break;
}
@ -797,6 +817,19 @@ public class ScreenShotPainter : MonoBehaviour
//FinishedRaw();
}
}
public void ArrowFactory()
{
if (lineStart != default)
{
var points = GenerateArrowPoints(lineStart, Input.mousePosition,0.1f);
_lastPoint = lineStart;
Paint(_eraserFlag, lineStart);
LerpPaint(Input.mousePosition, _eraserFlag);
LerpPaint(points[1], false);
_lastPoint = Input.mousePosition;
LerpPaint(points[3], false);
}
}
public Vector2[] GenerateRectanglePoints(Vector2 start, Vector2 thirdPoint)
{
@ -840,6 +873,31 @@ public class ScreenShotPainter : MonoBehaviour
}
public Vector2[] GenerateArrowPoints(Vector2 start, Vector2 end, float arrowWidth = 0.3f, float arrowHeadLength = 0.2f)
{
Vector2[] points = new Vector2[4];
// 计算方向向量
Vector2 direction = end - start;
float length = direction.magnitude;
Vector2 normalizedDir = direction.normalized;
// 计算箭头头部的基准点（箭头左右两侧点所在的位置）
Vector2 arrowBase = end - normalizedDir * length * arrowHeadLength;
// 计算垂直于方向的向量（用于确定箭头宽度）
Vector2 perpendicular = new Vector2(-normalizedDir.y, normalizedDir.x) * length * arrowWidth;
// 箭头四个点的位置
points[0] = start; // 箭尾
points[1] = arrowBase - perpendicular; // 箭头左侧点
points[2] = end; // 箭头顶点
points[3] = arrowBase + perpendicular; // 箭头右侧点
return points;
}
public void Clear()
{
// 重新分配 RenderTexture

9
Assets/Scripts/UI/UIDraw.cs
View File

@ -124,6 +124,15 @@ namespace QFramework.Example
}
});
Arrow.onValueChanged.AddListener(isOn =>
{
if (isOn)
{
ScreenShotPainter.instance.SetStatus(ScreenShotPainter.Status.Arrow);
}
});
ColorAreaBtn.onClick.AddListener(() =>
{
ColorArea.gameObject.SetActive(true);