using Ink_Canvas.Helpers; using iNKORE.UI.WPF.Modern.Controls; using System; using System.Collections.Generic; using System.Diagnostics; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Ink; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Threading; using MessageBox = iNKORE.UI.WPF.Modern.Controls.MessageBox; using Point = System.Windows.Point; namespace Ink_Canvas { public partial class MainWindow : Window { #region Floating Bar Control private void ImageDrawShape_MouseUp(object sender, MouseButtonEventArgs e) { if (lastBorderMouseDownObject != null && lastBorderMouseDownObject is Panel) ((Panel)lastBorderMouseDownObject).Background = new SolidColorBrush(Colors.Transparent); if (sender == ShapeDrawFloatingBarBtn && lastBorderMouseDownObject != ShapeDrawFloatingBarBtn) return; // FloatingBarIcons_MouseUp_New(sender); if (BorderDrawShape.Visibility == Visibility.Visible) { AnimationsHelper.HideWithSlideAndFade(EraserSizePanel); AnimationsHelper.HideWithSlideAndFade(BorderTools); AnimationsHelper.HideWithSlideAndFade(BoardBorderTools); AnimationsHelper.HideWithSlideAndFade(PenPalette); AnimationsHelper.HideWithSlideAndFade(BoardPenPalette); AnimationsHelper.HideWithSlideAndFade(BorderDrawShape); AnimationsHelper.HideWithSlideAndFade(BoardBorderDrawShape); AnimationsHelper.HideWithSlideAndFade(BoardEraserSizePanel); AnimationsHelper.HideWithSlideAndFade(BorderTools); AnimationsHelper.HideWithSlideAndFade(BoardBorderTools); AnimationsHelper.HideWithSlideAndFade(TwoFingerGestureBorder); AnimationsHelper.HideWithSlideAndFade(BoardTwoFingerGestureBorder); } else { AnimationsHelper.HideWithSlideAndFade(EraserSizePanel); AnimationsHelper.HideWithSlideAndFade(BorderTools); AnimationsHelper.HideWithSlideAndFade(BoardBorderTools); AnimationsHelper.HideWithSlideAndFade(PenPalette); AnimationsHelper.HideWithSlideAndFade(BoardPenPalette); AnimationsHelper.HideWithSlideAndFade(BoardEraserSizePanel); AnimationsHelper.HideWithSlideAndFade(BorderTools); AnimationsHelper.HideWithSlideAndFade(BoardBorderTools); AnimationsHelper.HideWithSlideAndFade(TwoFingerGestureBorder); AnimationsHelper.HideWithSlideAndFade(BoardTwoFingerGestureBorder); AnimationsHelper.HideWithSlideAndFade(BoardImageOptionsPanel); AnimationsHelper.ShowWithSlideFromBottomAndFade(BorderDrawShape); AnimationsHelper.ShowWithSlideFromBottomAndFade(BoardBorderDrawShape); } } #endregion Floating Bar Control private int drawingShapeMode; private bool isLongPressSelected; // 用于存是否是"选中"状态，便于后期抬笔后不做切换到笔的处理 #region Buttons private void SymbolIconPinBorderDrawShape_MouseUp(object sender, MouseButtonEventArgs e) { if (lastBorderMouseDownObject != sender) return; ToggleSwitchDrawShapeBorderAutoHide.IsOn = !ToggleSwitchDrawShapeBorderAutoHide.IsOn; if (ToggleSwitchDrawShapeBorderAutoHide.IsOn) ((SymbolIcon)sender).Symbol = Symbol.Pin; else ((SymbolIcon)sender).Symbol = Symbol.UnPin; } private object lastMouseDownSender; private DateTime lastMouseDownTime = DateTime.MinValue; private async void Image_MouseDown(object sender, MouseButtonEventArgs e) { lastMouseDownSender = sender; lastMouseDownTime = DateTime.Now; await Task.Delay(500); if (lastMouseDownSender == sender) { lastMouseDownSender = null; var dA = new DoubleAnimation(1, 0.3, new Duration(TimeSpan.FromMilliseconds(100))); ((UIElement)sender).BeginAnimation(OpacityProperty, dA); forceEraser = true; inkCanvas.EditingMode = InkCanvasEditingMode.None; inkCanvas.IsManipulationEnabled = true; if (sender == ImageDrawLine || sender == BoardImageDrawLine) drawingShapeMode = 1; else if (sender == ImageDrawDashedLine || sender == BoardImageDrawDashedLine) drawingShapeMode = 8; else if (sender == ImageDrawDotLine || sender == BoardImageDrawDotLine) drawingShapeMode = 18; else if (sender == ImageDrawArrow || sender == BoardImageDrawArrow) drawingShapeMode = 2; else if (sender == ImageDrawParallelLine || sender == BoardImageDrawParallelLine) drawingShapeMode = 15; // 更新模式缓存 UpdateCurrentToolMode("shape"); isLongPressSelected = true; if (isSingleFingerDragMode) BtnFingerDragMode_Click(BtnFingerDragMode, null); } } private void BtnPen_Click(object sender, RoutedEventArgs e) { // 如果当前有选中的图片元素，先取消选中 if (currentSelectedElement != null) { UnselectElement(currentSelectedElement); currentSelectedElement = null; } // 禁用高级橡皮擦系统 DisableEraserOverlay(); ExitMultiTouchModeIfNeeded(); // 如果当前已是批注模式，再次点击弹出批注子面板 if (penType == 0 && inkCanvas.EditingMode == InkCanvasEditingMode.Ink && !drawingAttributes.IsHighlighter) { return; } // 否则只切换到批注模式，不弹出子面板 forceEraser = false; forcePointEraser = false; drawingShapeMode = 0; penType = 0; drawingAttributes.IsHighlighter = false; drawingAttributes.StylusTip = StylusTip.Ellipse; // 禁止几何绘制模式下切换到Ink if (drawingShapeMode != 0) { return; } inkCanvas.EditingMode = InkCanvasEditingMode.Ink; // 更新lastInkCanvasEditingMode以确保多指手势逻辑正确 lastInkCanvasEditingMode = InkCanvasEditingMode.Ink; ResetAllShapeButtonsOpacity(); SetCursorBasedOnEditingMode(inkCanvas); } private Task CheckIsDrawingShapesInMultiTouchMode() { if (isInMultiTouchMode) { // 不关闭多指书写模式，而是保存状态，暂时禁用多指书写相关的事件处理 // 不再调用 ToggleSwitchEnableMultiTouchMode.IsOn = false; // 暂时禁用多指书写事件处理，以避免冲突 inkCanvas.StylusDown -= MainWindow_StylusDown; inkCanvas.StylusMove -= MainWindow_StylusMove; inkCanvas.StylusUp -= MainWindow_StylusUp; inkCanvas.TouchDown -= MainWindow_TouchDown; // 记录已暂时禁用多指书写模式，但实际上多指书写开关仍然为打开状态 lastIsInMultiTouchMode = true; } // 修复：几何绘制模式下确保不切换到Ink模式，避免触摸轨迹被收集 if (drawingShapeMode != 0) { inkCanvas.EditingMode = InkCanvasEditingMode.None; } return Task.FromResult(true); } internal async void BtnDrawLine_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(1); lastMouseDownSender = null; // 先保存长按状态，避免被CancelSingleFingerDragMode重置 bool wasLongPressed = isLongPressSelected; CancelSingleFingerDragMode(); if (wasLongPressed) { if (ToggleSwitchDrawShapeBorderAutoHide.IsOn) CollapseBorderDrawShape(); var dA = new DoubleAnimation(1, 1, new Duration(TimeSpan.FromMilliseconds(0))); ImageDrawLine.BeginAnimation(OpacityProperty, dA); // 恢复长按状态，保持工具选中 isLongPressSelected = true; } DrawShapePromptToPen(); } private async void BtnDrawDashedLine_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(8); lastMouseDownSender = null; // 先保存长按状态，避免被CancelSingleFingerDragMode重置 bool wasLongPressed = isLongPressSelected; CancelSingleFingerDragMode(); if (wasLongPressed) { if (ToggleSwitchDrawShapeBorderAutoHide.IsOn) CollapseBorderDrawShape(); var dA = new DoubleAnimation(1, 1, new Duration(TimeSpan.FromMilliseconds(0))); ImageDrawDashedLine.BeginAnimation(OpacityProperty, dA); // 恢复长按状态，保持工具选中 isLongPressSelected = true; } DrawShapePromptToPen(); } private async void BtnDrawDotLine_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(18); lastMouseDownSender = null; // 先保存长按状态，避免被CancelSingleFingerDragMode重置 bool wasLongPressed = isLongPressSelected; CancelSingleFingerDragMode(); if (wasLongPressed) { if (ToggleSwitchDrawShapeBorderAutoHide.IsOn) CollapseBorderDrawShape(); var dA = new DoubleAnimation(1, 1, new Duration(TimeSpan.FromMilliseconds(0))); ImageDrawDotLine.BeginAnimation(OpacityProperty, dA); // 恢复长按状态，保持工具选中 isLongPressSelected = true; } DrawShapePromptToPen(); } private async void BtnDrawArrow_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(2); lastMouseDownSender = null; // 先保存长按状态，避免被CancelSingleFingerDragMode重置 bool wasLongPressed = isLongPressSelected; CancelSingleFingerDragMode(); if (wasLongPressed) { if (ToggleSwitchDrawShapeBorderAutoHide.IsOn) CollapseBorderDrawShape(); var dA = new DoubleAnimation(1, 1, new Duration(TimeSpan.FromMilliseconds(0))); ImageDrawArrow.BeginAnimation(OpacityProperty, dA); // 恢复长按状态，保持工具选中 isLongPressSelected = true; } DrawShapePromptToPen(); } private async void BtnDrawParallelLine_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(15); lastMouseDownSender = null; // 先保存长按状态，避免被CancelSingleFingerDragMode重置 bool wasLongPressed = isLongPressSelected; CancelSingleFingerDragMode(); if (wasLongPressed) { if (ToggleSwitchDrawShapeBorderAutoHide.IsOn) CollapseBorderDrawShape(); var dA = new DoubleAnimation(1, 1, new Duration(TimeSpan.FromMilliseconds(0))); ImageDrawParallelLine.BeginAnimation(OpacityProperty, dA); // 恢复长按状态，保持工具选中 isLongPressSelected = true; } DrawShapePromptToPen(); } private async void BtnDrawCoordinate1_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(11); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawCoordinate2_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(12); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawCoordinate3_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(13); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawCoordinate4_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(14); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawCoordinate5_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(17); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawRectangle_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(3); CancelSingleFingerDragMode(); isLongPressSelected = false; lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawRectangleCenter_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(19); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawEllipse_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(4); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawCircle_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(5); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawCenterEllipse_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(16); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawCenterEllipseWithFocalPoint_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(23); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawDashedCircle_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(10); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawHyperbola_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(24); drawMultiStepShapeCurrentStep = 0; CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawHyperbolaWithFocalPoint_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(25); drawMultiStepShapeCurrentStep = 0; CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawParabola1_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(20); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawParabolaWithFocalPoint_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(22); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawParabola2_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(21); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawCylinder_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(6); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawCone_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(7); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } private async void BtnDrawCuboid_Click(object sender, MouseButtonEventArgs e) { await CheckIsDrawingShapesInMultiTouchMode(); EnterShapeDrawingMode(9); isFirstTouchCuboid = true; CuboidFrontRectIniP = new Point(); CuboidFrontRectEndP = new Point(); CancelSingleFingerDragMode(); lastMouseDownSender = null; DrawShapePromptToPen(); } #endregion private void inkCanvas_TouchMove(object sender, TouchEventArgs e) { // 确保套索选择模式下触摸移动时光标保持可见 if (inkCanvas.EditingMode == InkCanvasEditingMode.Select) { SetCursorBasedOnEditingMode(inkCanvas); } // 修复：几何绘制模式下完全禁止触摸轨迹收集 if (drawingShapeMode != 0) { // 确保几何绘制模式下不切换到Ink模式，避免触摸轨迹被收集 inkCanvas.EditingMode = InkCanvasEditingMode.None; if (isWaitUntilNextTouchDown && dec.Count > 1) return; if (dec.Count > 1) { // 修复：双曲线绘制时，多指触摸不应该删除第一笔的辅助线 if ((drawingShapeMode == 24 || drawingShapeMode == 25) && drawMultiStepShapeCurrentStep == 1) { // 第二笔绘制双曲线时，只删除第二笔的临时笔画，保留第一笔的辅助线 try { inkCanvas.Strokes.Remove(lastTempStroke); } catch { } return; } // 其他情况正常删除临时笔画 try { inkCanvas.Strokes.Remove(lastTempStroke); inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } return; } // 修复：双曲线绘制时，第二笔应该基于第一笔的起点，而不是触摸实时位置 Point touchPoint = e.GetTouchPoint(inkCanvas).Position; if ((drawingShapeMode == 24 || drawingShapeMode == 25) && drawMultiStepShapeCurrentStep == 1) { // 第二笔绘制双曲线时，使用触摸位置作为终点，但保持第一笔的起点 // 这里不需要特殊处理，因为MouseTouchMove函数内部已经正确处理了双曲线的绘制逻辑 MouseTouchMove(touchPoint); } else { // 其他情况正常处理 MouseTouchMove(touchPoint); } return; // 处理完几何绘制后直接返回，不执行后面的代码 } // 其它模式下，允许橡皮、套索、批注等正常工作，不覆盖EditingMode if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint || inkCanvas.EditingMode == InkCanvasEditingMode.Select || inkCanvas.EditingMode == InkCanvasEditingMode.Ink) { // 允许正常橡皮、套索、批注 } } private int drawMultiStepShapeCurrentStep; //多笔完成的图形 当前所处在的笔画 private StrokeCollection drawMultiStepShapeSpecialStrokeCollection = new StrokeCollection(); //多笔完成的图形 当前所处在的笔画 //double drawMultiStepShapeSpecialParameter1 = 0.0; //多笔完成的图形 特殊参数 通常用于表示a //double drawMultiStepShapeSpecialParameter2 = 0.0; //多笔完成的图形 特殊参数 通常用于表示b private double drawMultiStepShapeSpecialParameter3; //多笔完成的图形 特殊参数 通常用于表示k #region 形状绘制主函数 private void MouseTouchMove(Point endP) { // 禁用原有的FitToCurve，使用新的高级贝塞尔曲线平滑 if (Settings.Canvas.FitToCurve) drawingAttributes.FitToCurve = false; // 在绘制过程中禁用浮动栏交互，避免干扰绘制 ViewboxFloatingBar.IsHitTestVisible = false; BlackboardUIGridForInkReplay.IsHitTestVisible = false; List pointList; StylusPointCollection point; Stroke stroke; var strokes = new StrokeCollection(); var newIniP = iniP; switch (drawingShapeMode) { case 1: _currentCommitType = CommitReason.ShapeDrawing; pointList = new List { new Point(iniP.X, iniP.Y), new Point(endP.X, endP.Y) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; UpdateTempStrokeSafely(stroke); break; case 8: _currentCommitType = CommitReason.ShapeDrawing; strokes.Add(GenerateDashedLineStrokeCollection(iniP, endP)); UpdateTempStrokeCollectionSafely(strokes); break; case 18: _currentCommitType = CommitReason.ShapeDrawing; strokes.Add(GenerateDotLineStrokeCollection(iniP, endP)); UpdateTempStrokeCollectionSafely(strokes); break; case 2: _currentCommitType = CommitReason.ShapeDrawing; double w = 15, h = 10; var theta = Math.Atan2(iniP.Y - endP.Y, iniP.X - endP.X); var sint = Math.Sin(theta); var cost = Math.Cos(theta); pointList = new List { new Point(iniP.X, iniP.Y), new Point(endP.X, endP.Y), new Point(endP.X + (w * cost - h * sint), endP.Y + (w * sint + h * cost)), new Point(endP.X, endP.Y), new Point(endP.X + (w * cost + h * sint), endP.Y - (h * cost - w * sint)) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; // 优化：使用更安全的临时笔画更新方式，减少闪烁 UpdateTempStrokeSafely(stroke); break; case 15: _currentCommitType = CommitReason.ShapeDrawing; var d = GetDistance(iniP, endP); if (d == 0) return; var sinTheta = (iniP.Y - endP.Y) / d; var cosTheta = (endP.X - iniP.X) / d; var tanTheta = Math.Abs(sinTheta / cosTheta); double x = 25; if (Math.Abs(tanTheta) < 1.0 / 12) { sinTheta = 0; cosTheta = 1; endP.Y = iniP.Y; } if (tanTheta < 0.63 && tanTheta > 0.52) //30 { sinTheta = sinTheta / Math.Abs(sinTheta) * 0.5; cosTheta = cosTheta / Math.Abs(cosTheta) * 0.866; endP.Y = iniP.Y - d * sinTheta; endP.X = iniP.X + d * cosTheta; } if (tanTheta < 1.08 && tanTheta > 0.92) //45 { sinTheta = sinTheta / Math.Abs(sinTheta) * 0.707; cosTheta = cosTheta / Math.Abs(cosTheta) * 0.707; endP.Y = iniP.Y - d * sinTheta; endP.X = iniP.X + d * cosTheta; } if (tanTheta < 1.95 && tanTheta > 1.63) //60 { sinTheta = sinTheta / Math.Abs(sinTheta) * 0.866; cosTheta = cosTheta / Math.Abs(cosTheta) * 0.5; endP.Y = iniP.Y - d * sinTheta; endP.X = iniP.X + d * cosTheta; } if (Math.Abs(cosTheta / sinTheta) < 1.0 / 12) { endP.X = iniP.X; sinTheta = 1; cosTheta = 0; } strokes.Add(GenerateLineStroke(new Point(iniP.X - 3 * x * sinTheta, iniP.Y - 3 * x * cosTheta), new Point(endP.X - 3 * x * sinTheta, endP.Y - 3 * x * cosTheta))); strokes.Add(GenerateLineStroke(new Point(iniP.X - x * sinTheta, iniP.Y - x * cosTheta), new Point(endP.X - x * sinTheta, endP.Y - x * cosTheta))); strokes.Add(GenerateLineStroke(new Point(iniP.X + x * sinTheta, iniP.Y + x * cosTheta), new Point(endP.X + x * sinTheta, endP.Y + x * cosTheta))); strokes.Add(GenerateLineStroke(new Point(iniP.X + 3 * x * sinTheta, iniP.Y + 3 * x * cosTheta), new Point(endP.X + 3 * x * sinTheta, endP.Y + 3 * x * cosTheta))); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 11: _currentCommitType = CommitReason.ShapeDrawing; strokes.Add(GenerateArrowLineStroke(new Point(2 * iniP.X - (endP.X - 20), iniP.Y), new Point(endP.X, iniP.Y))); strokes.Add(GenerateArrowLineStroke(new Point(iniP.X, 2 * iniP.Y - (endP.Y + 20)), new Point(iniP.X, endP.Y))); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 12: _currentCommitType = CommitReason.ShapeDrawing; if (Math.Abs(iniP.X - endP.X) < 0.01) return; strokes.Add(GenerateArrowLineStroke( new Point(iniP.X + (iniP.X - endP.X) / Math.Abs(iniP.X - endP.X) * 25, iniP.Y), new Point(endP.X, iniP.Y))); strokes.Add(GenerateArrowLineStroke(new Point(iniP.X, 2 * iniP.Y - (endP.Y + 20)), new Point(iniP.X, endP.Y))); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 13: _currentCommitType = CommitReason.ShapeDrawing; if (Math.Abs(iniP.Y - endP.Y) < 0.01) return; strokes.Add(GenerateArrowLineStroke(new Point(2 * iniP.X - (endP.X - 20), iniP.Y), new Point(endP.X, iniP.Y))); strokes.Add(GenerateArrowLineStroke( new Point(iniP.X, iniP.Y + (iniP.Y - endP.Y) / Math.Abs(iniP.Y - endP.Y) * 25), new Point(iniP.X, endP.Y))); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 14: _currentCommitType = CommitReason.ShapeDrawing; if (Math.Abs(iniP.X - endP.X) < 0.01 || Math.Abs(iniP.Y - endP.Y) < 0.01) return; strokes.Add(GenerateArrowLineStroke( new Point(iniP.X + (iniP.X - endP.X) / Math.Abs(iniP.X - endP.X) * 25, iniP.Y), new Point(endP.X, iniP.Y))); strokes.Add(GenerateArrowLineStroke( new Point(iniP.X, iniP.Y + (iniP.Y - endP.Y) / Math.Abs(iniP.Y - endP.Y) * 25), new Point(iniP.X, endP.Y))); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 17: _currentCommitType = CommitReason.ShapeDrawing; strokes.Add(GenerateArrowLineStroke(new Point(iniP.X, iniP.Y), new Point(iniP.X + Math.Abs(endP.X - iniP.X), iniP.Y))); strokes.Add(GenerateArrowLineStroke(new Point(iniP.X, iniP.Y), new Point(iniP.X, iniP.Y - Math.Abs(endP.Y - iniP.Y)))); d = (Math.Abs(iniP.X - endP.X) + Math.Abs(iniP.Y - endP.Y)) / 2; strokes.Add(GenerateArrowLineStroke(new Point(iniP.X, iniP.Y), new Point(iniP.X - d / 1.76, iniP.Y + d / 1.76))); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 3: _currentCommitType = CommitReason.ShapeDrawing; pointList = new List { new Point(iniP.X, iniP.Y), new Point(iniP.X, endP.Y), new Point(endP.X, endP.Y), new Point(endP.X, iniP.Y), new Point(iniP.X, iniP.Y) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; try { inkCanvas.Strokes.Remove(lastTempStroke); } catch { } lastTempStroke = stroke; inkCanvas.Strokes.Add(stroke); break; case 19: _currentCommitType = CommitReason.ShapeDrawing; var a = iniP.X - endP.X; var b = iniP.Y - endP.Y; pointList = new List { new Point(iniP.X - a, iniP.Y - b), new Point(iniP.X - a, iniP.Y + b), new Point(iniP.X + a, iniP.Y + b), new Point(iniP.X + a, iniP.Y - b), new Point(iniP.X - a, iniP.Y - b) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; try { inkCanvas.Strokes.Remove(lastTempStroke); } catch { } lastTempStroke = stroke; inkCanvas.Strokes.Add(stroke); break; case 4: _currentCommitType = CommitReason.ShapeDrawing; pointList = GenerateEllipseGeometry(iniP, endP); point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; try { inkCanvas.Strokes.Remove(lastTempStroke); } catch { } lastTempStroke = stroke; inkCanvas.Strokes.Add(stroke); break; case 5: _currentCommitType = CommitReason.ShapeDrawing; var R = GetDistance(iniP, endP); pointList = GenerateEllipseGeometry(new Point(iniP.X - R, iniP.Y - R), new Point(iniP.X + R, iniP.Y + R)); point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; try { inkCanvas.Strokes.Remove(lastTempStroke); } catch { } lastTempStroke = stroke; inkCanvas.Strokes.Add(stroke); // 如果启用了圆心标记功能，则绘制圆心 if (Settings.Canvas.ShowCircleCenter) { DrawCircleCenter(iniP); } break; case 16: _currentCommitType = CommitReason.ShapeDrawing; var halfA = endP.X - iniP.X; var halfB = endP.Y - iniP.Y; pointList = GenerateEllipseGeometry(new Point(iniP.X - halfA, iniP.Y - halfB), new Point(iniP.X + halfA, iniP.Y + halfB)); point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; try { inkCanvas.Strokes.Remove(lastTempStroke); } catch { } lastTempStroke = stroke; inkCanvas.Strokes.Add(stroke); break; case 23: _currentCommitType = CommitReason.ShapeDrawing; a = Math.Abs(endP.X - iniP.X); b = Math.Abs(endP.Y - iniP.Y); pointList = GenerateEllipseGeometry(new Point(iniP.X - a, iniP.Y - b), new Point(iniP.X + a, iniP.Y + b)); point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke); var c = Math.Sqrt(Math.Abs(a * a - b * b)); StylusPoint stylusPoint; if (a > b) { stylusPoint = new StylusPoint(iniP.X + c, iniP.Y, (float)1.0); point = new StylusPointCollection(); point.Add(stylusPoint); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); stylusPoint = new StylusPoint(iniP.X - c, iniP.Y, (float)1.0); point = new StylusPointCollection(); point.Add(stylusPoint); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); } else if (a < b) { stylusPoint = new StylusPoint(iniP.X, iniP.Y - c, (float)1.0); point = new StylusPointCollection(); point.Add(stylusPoint); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); stylusPoint = new StylusPoint(iniP.X, iniP.Y + c, (float)1.0); point = new StylusPointCollection(); point.Add(stylusPoint); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); } try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 10: _currentCommitType = CommitReason.ShapeDrawing; R = GetDistance(iniP, endP); strokes = GenerateDashedLineEllipseStrokeCollection(new Point(iniP.X - R, iniP.Y - R), new Point(iniP.X + R, iniP.Y + R)); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); // 如果启用了圆心标记功能，则绘制圆心 if (Settings.Canvas.ShowCircleCenter) { DrawCircleCenter(iniP); } break; case 24: case 25: _currentCommitType = CommitReason.ShapeDrawing; //双曲线 x^2/a^2 - y^2/b^2 = 1 if (Math.Abs(iniP.X - endP.X) < 0.01 || Math.Abs(iniP.Y - endP.Y) < 0.01) return; var pointList2 = new List(); var pointList3 = new List(); var pointList4 = new List(); if (drawMultiStepShapeCurrentStep == 0) { //第一笔：画渐近线 var k = Math.Abs((endP.Y - iniP.Y) / (endP.X - iniP.X)); strokes.Add( GenerateDashedLineStrokeCollection(new Point(2 * iniP.X - endP.X, 2 * iniP.Y - endP.Y), endP)); strokes.Add(GenerateDashedLineStrokeCollection(new Point(2 * iniP.X - endP.X, endP.Y), new Point(endP.X, 2 * iniP.Y - endP.Y))); drawMultiStepShapeSpecialParameter3 = k; drawMultiStepShapeSpecialStrokeCollection = strokes; // 修复：第一笔绘制的辅助线应该立即显示在画布上 try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); } else { //第二笔：画双曲线 var k = drawMultiStepShapeSpecialParameter3; var isHyperbolaFocalPointOnXAxis = Math.Abs((endP.Y - iniP.Y) / (endP.X - iniP.X)) < k; if (isHyperbolaFocalPointOnXAxis) { // 焦点在 x 轴上 a = Math.Sqrt(Math.Abs((endP.X - iniP.X) * (endP.X - iniP.X) - (endP.Y - iniP.Y) * (endP.Y - iniP.Y) / (k * k))); b = a * k; pointList = new List(); for (var i = a; i <= Math.Abs(endP.X - iniP.X); i += 0.5) { var rY = Math.Sqrt(Math.Abs(k * k * i * i - b * b)); pointList.Add(new Point(iniP.X + i, iniP.Y - rY)); pointList2.Add(new Point(iniP.X + i, iniP.Y + rY)); pointList3.Add(new Point(iniP.X - i, iniP.Y - rY)); pointList4.Add(new Point(iniP.X - i, iniP.Y + rY)); } } else { // 焦点在 y 轴上 a = Math.Sqrt(Math.Abs((endP.Y - iniP.Y) * (endP.Y - iniP.Y) - (endP.X - iniP.X) * (endP.X - iniP.X) * (k * k))); b = a / k; pointList = new List(); for (var i = a; i <= Math.Abs(endP.Y - iniP.Y); i += 0.5) { var rX = Math.Sqrt(Math.Abs(i * i / k / k - b * b)); pointList.Add(new Point(iniP.X - rX, iniP.Y + i)); pointList2.Add(new Point(iniP.X + rX, iniP.Y + i)); pointList3.Add(new Point(iniP.X - rX, iniP.Y - i)); pointList4.Add(new Point(iniP.X + rX, iniP.Y - i)); } } try { point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); point = new StylusPointCollection(pointList2); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); point = new StylusPointCollection(pointList3); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); point = new StylusPointCollection(pointList4); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); if (drawingShapeMode == 25) { //画焦点 c = Math.Sqrt(a * a + b * b); stylusPoint = isHyperbolaFocalPointOnXAxis ? new StylusPoint(iniP.X + c, iniP.Y, (float)1.0) : new StylusPoint(iniP.X, iniP.Y + c, (float)1.0); point = new StylusPointCollection(); point.Add(stylusPoint); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); stylusPoint = isHyperbolaFocalPointOnXAxis ? new StylusPoint(iniP.X - c, iniP.Y, (float)1.0) : new StylusPoint(iniP.X, iniP.Y - c, (float)1.0); point = new StylusPointCollection(); point.Add(stylusPoint); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); } } catch { return; } } // 修复：双曲线绘制完成后，需要将第一笔的辅助线和第二笔的双曲线合并 try { // 删除第二笔的临时笔画 inkCanvas.Strokes.Remove(lastTempStrokeCollection); // 创建包含辅助线和双曲线的完整笔画集合 var completeStrokes = new StrokeCollection(); // 添加第一笔的辅助线 if (drawMultiStepShapeSpecialStrokeCollection != null && drawMultiStepShapeSpecialStrokeCollection.Count > 0) { foreach (var stroke1 in drawMultiStepShapeSpecialStrokeCollection) { completeStrokes.Add(stroke1.Clone()); } } // 添加第二笔的双曲线 foreach (var stroke1 in strokes) { completeStrokes.Add(stroke1.Clone()); } lastTempStrokeCollection = completeStrokes; inkCanvas.Strokes.Add(completeStrokes); } catch (Exception ex) { Trace.WriteLine($"双曲线绘制完成处理失败: {ex.Message}"); // 如果合并失败，至少添加双曲线部分 lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); } break; case 20: _currentCommitType = CommitReason.ShapeDrawing; //抛物线 y=ax^2 if (Math.Abs(iniP.X - endP.X) < 0.01 || Math.Abs(iniP.Y - endP.Y) < 0.01) return; a = (iniP.Y - endP.Y) / ((iniP.X - endP.X) * (iniP.X - endP.X)); pointList = new List(); pointList2 = new List(); for (var i = 0.0; i <= Math.Abs(endP.X - iniP.X); i += 0.5) { pointList.Add(new Point(iniP.X + i, iniP.Y - a * i * i)); pointList2.Add(new Point(iniP.X - i, iniP.Y - a * i * i)); } point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); point = new StylusPointCollection(pointList2); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 21: _currentCommitType = CommitReason.ShapeDrawing; //抛物线 y^2=ax if (Math.Abs(iniP.X - endP.X) < 0.01 || Math.Abs(iniP.Y - endP.Y) < 0.01) return; a = (iniP.X - endP.X) / ((iniP.Y - endP.Y) * (iniP.Y - endP.Y)); pointList = new List(); pointList2 = new List(); for (var i = 0.0; i <= Math.Abs(endP.Y - iniP.Y); i += 0.5) { pointList.Add(new Point(iniP.X - a * i * i, iniP.Y + i)); pointList2.Add(new Point(iniP.X - a * i * i, iniP.Y - i)); } point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); point = new StylusPointCollection(pointList2); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 22: _currentCommitType = CommitReason.ShapeDrawing; //抛物线 y^2=ax, 含焦点 if (Math.Abs(iniP.X - endP.X) < 0.01 || Math.Abs(iniP.Y - endP.Y) < 0.01) return; var p = (iniP.Y - endP.Y) * (iniP.Y - endP.Y) / (2 * (iniP.X - endP.X)); a = 0.5 / p; pointList = new List(); pointList2 = new List(); for (var i = 0.0; i <= Math.Abs(endP.Y - iniP.Y); i += 0.5) { pointList.Add(new Point(iniP.X - a * i * i, iniP.Y + i)); pointList2.Add(new Point(iniP.X - a * i * i, iniP.Y - i)); } point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); point = new StylusPointCollection(pointList2); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); stylusPoint = new StylusPoint(iniP.X - p / 2, iniP.Y, (float)1.0); point = new StylusPointCollection(); point.Add(stylusPoint); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 6: _currentCommitType = CommitReason.ShapeDrawing; newIniP = iniP; if (iniP.Y > endP.Y) { newIniP = new Point(iniP.X, endP.Y); endP = new Point(endP.X, iniP.Y); } var topA = Math.Abs(newIniP.X - endP.X); var topB = topA / 2.646; //顶部椭圆 pointList = GenerateEllipseGeometry(new Point(newIniP.X, newIniP.Y - topB / 2), new Point(endP.X, newIniP.Y + topB / 2)); point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); //底部椭圆 pointList = GenerateEllipseGeometry(new Point(newIniP.X, endP.Y - topB / 2), new Point(endP.X, endP.Y + topB / 2), false); point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); strokes.Add(GenerateDashedLineEllipseStrokeCollection(new Point(newIniP.X, endP.Y - topB / 2), new Point(endP.X, endP.Y + topB / 2), true, false)); //左侧 pointList = new List { new Point(newIniP.X, newIniP.Y), new Point(newIniP.X, endP.Y) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); //右侧 pointList = new List { new Point(endP.X, newIniP.Y), new Point(endP.X, endP.Y) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 7: _currentCommitType = CommitReason.ShapeDrawing; if (iniP.Y > endP.Y) { newIniP = new Point(iniP.X, endP.Y); endP = new Point(endP.X, iniP.Y); } var bottomA = Math.Abs(newIniP.X - endP.X); var bottomB = bottomA / 2.646; //底部椭圆 pointList = GenerateEllipseGeometry(new Point(newIniP.X, endP.Y - bottomB / 2), new Point(endP.X, endP.Y + bottomB / 2), false); point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); strokes.Add(GenerateDashedLineEllipseStrokeCollection(new Point(newIniP.X, endP.Y - bottomB / 2), new Point(endP.X, endP.Y + bottomB / 2), true, false)); //左侧 pointList = new List { new Point((newIniP.X + endP.X) / 2, newIniP.Y), new Point(newIniP.X, endP.Y) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); //右侧 pointList = new List { new Point((newIniP.X + endP.X) / 2, newIniP.Y), new Point(endP.X, endP.Y) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); break; case 9: // 画长方体 _currentCommitType = CommitReason.ShapeDrawing; if (isFirstTouchCuboid) { //分开画线条方便后期单独擦除某一条棱 strokes.Add(GenerateLineStroke(new Point(iniP.X, iniP.Y), new Point(iniP.X, endP.Y))); strokes.Add(GenerateLineStroke(new Point(iniP.X, endP.Y), new Point(endP.X, endP.Y))); strokes.Add(GenerateLineStroke(new Point(endP.X, endP.Y), new Point(endP.X, iniP.Y))); strokes.Add(GenerateLineStroke(new Point(iniP.X, iniP.Y), new Point(endP.X, iniP.Y))); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); CuboidFrontRectIniP = iniP; CuboidFrontRectEndP = endP; } else { d = CuboidFrontRectIniP.Y - endP.Y; if (d < 0) d = -d; //就是懒不想做反向的，不要让我去做，想做自己做好之后 Pull Request a = CuboidFrontRectEndP.X - CuboidFrontRectIniP.X; //正面矩形长 b = CuboidFrontRectEndP.Y - CuboidFrontRectIniP.Y; //正面矩形宽 //横上 var newLineIniP = new Point(CuboidFrontRectIniP.X + d, CuboidFrontRectIniP.Y - d); var newLineEndP = new Point(CuboidFrontRectEndP.X + d, CuboidFrontRectIniP.Y - d); pointList = new List { newLineIniP, newLineEndP }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); //横下 (虚线) newLineIniP = new Point(CuboidFrontRectIniP.X + d, CuboidFrontRectEndP.Y - d); newLineEndP = new Point(CuboidFrontRectEndP.X + d, CuboidFrontRectEndP.Y - d); strokes.Add(GenerateDashedLineStrokeCollection(newLineIniP, newLineEndP)); //斜左上 newLineIniP = new Point(CuboidFrontRectIniP.X, CuboidFrontRectIniP.Y); newLineEndP = new Point(CuboidFrontRectIniP.X + d, CuboidFrontRectIniP.Y - d); pointList = new List { newLineIniP, newLineEndP }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); //斜右上 newLineIniP = new Point(CuboidFrontRectEndP.X, CuboidFrontRectIniP.Y); newLineEndP = new Point(CuboidFrontRectEndP.X + d, CuboidFrontRectIniP.Y - d); pointList = new List { newLineIniP, newLineEndP }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); //斜左下 (虚线) newLineIniP = new Point(CuboidFrontRectIniP.X, CuboidFrontRectEndP.Y); newLineEndP = new Point(CuboidFrontRectIniP.X + d, CuboidFrontRectEndP.Y - d); strokes.Add(GenerateDashedLineStrokeCollection(newLineIniP, newLineEndP)); //斜右下 newLineIniP = new Point(CuboidFrontRectEndP.X, CuboidFrontRectEndP.Y); newLineEndP = new Point(CuboidFrontRectEndP.X + d, CuboidFrontRectEndP.Y - d); pointList = new List { newLineIniP, newLineEndP }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); //竖左 (虚线) newLineIniP = new Point(CuboidFrontRectIniP.X + d, CuboidFrontRectIniP.Y - d); newLineEndP = new Point(CuboidFrontRectIniP.X + d, CuboidFrontRectEndP.Y - d); strokes.Add(GenerateDashedLineStrokeCollection(newLineIniP, newLineEndP)); //竖右 newLineIniP = new Point(CuboidFrontRectEndP.X + d, CuboidFrontRectIniP.Y - d); newLineEndP = new Point(CuboidFrontRectEndP.X + d, CuboidFrontRectEndP.Y - d); pointList = new List { newLineIniP, newLineEndP }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); try { inkCanvas.Strokes.Remove(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } lastTempStrokeCollection = strokes; inkCanvas.Strokes.Add(strokes); } break; } } #endregion private bool isFirstTouchCuboid = true; private Point CuboidFrontRectIniP; private Point CuboidFrontRectEndP; private Stroke lastTempStroke; private StrokeCollection lastTempStrokeCollection = new StrokeCollection(); private bool isWaitUntilNextTouchDown; // 添加节流机制，减少更新频率 private DateTime lastUpdateTime = DateTime.MinValue; private const int UpdateThrottleMs = 16; // 约60fps的更新频率 /// /// 安全地更新临时笔画，减少预览闪烁 /// /// 新的临时笔画 private void UpdateTempStrokeSafely(Stroke newStroke) { // 节流机制：限制更新频率 var now = DateTime.Now; if ((now - lastUpdateTime).TotalMilliseconds < UpdateThrottleMs) { return; } lastUpdateTime = now; try { // 使用Dispatcher.BeginInvoke确保UI更新在UI线程上执行 Dispatcher.BeginInvoke(new Action(() => { try { // 先添加新笔画，再删除旧笔画，减少视觉闪烁 inkCanvas.Strokes.Add(newStroke); if (lastTempStroke != null && inkCanvas.Strokes.Contains(lastTempStroke)) { inkCanvas.Strokes.Remove(lastTempStroke); } lastTempStroke = newStroke; } catch (Exception ex) { Debug.WriteLine($"UpdateTempStrokeSafely 失败: {ex.Message}"); // 如果更新失败，确保清理状态 if (lastTempStroke != null && inkCanvas.Strokes.Contains(lastTempStroke)) { try { inkCanvas.Strokes.Remove(lastTempStroke); } catch { } } lastTempStroke = newStroke; try { inkCanvas.Strokes.Add(newStroke); } catch { } } }), DispatcherPriority.Render); } catch (Exception ex) { Debug.WriteLine($"UpdateTempStrokeSafely Dispatcher 失败: {ex.Message}"); } } /// /// 安全地更新临时笔画集合，减少预览闪烁 /// /// 新的临时笔画集合 private void UpdateTempStrokeCollectionSafely(StrokeCollection newStrokeCollection) { // 节流机制：限制更新频率 var now = DateTime.Now; if ((now - lastUpdateTime).TotalMilliseconds < UpdateThrottleMs) { return; } lastUpdateTime = now; try { // 使用Dispatcher.BeginInvoke确保UI更新在UI线程上执行 Dispatcher.BeginInvoke(new Action(() => { try { // 先添加新笔画集合，再删除旧笔画集合，减少视觉闪烁 inkCanvas.Strokes.Add(newStrokeCollection); if (lastTempStrokeCollection != null && lastTempStrokeCollection.Count > 0) { foreach (var stroke in lastTempStrokeCollection) { if (inkCanvas.Strokes.Contains(stroke)) { inkCanvas.Strokes.Remove(stroke); } } } lastTempStrokeCollection = newStrokeCollection; } catch (Exception ex) { Debug.WriteLine($"UpdateTempStrokeCollectionSafely 失败: {ex.Message}"); // 如果更新失败，确保清理状态 if (lastTempStrokeCollection != null && lastTempStrokeCollection.Count > 0) { foreach (var stroke in lastTempStrokeCollection) { try { inkCanvas.Strokes.Remove(stroke); } catch { } } } lastTempStrokeCollection = newStrokeCollection; try { inkCanvas.Strokes.Add(newStrokeCollection); } catch { } } }), DispatcherPriority.Render); } catch (Exception ex) { Debug.WriteLine($"UpdateTempStrokeCollectionSafely Dispatcher 失败: {ex.Message}"); } } private List GenerateEllipseGeometry(Point st, Point ed, bool isDrawTop = true, bool isDrawBottom = true) { var a = 0.5 * (ed.X - st.X); var b = 0.5 * (ed.Y - st.Y); var pointList = new List(); if (isDrawTop && isDrawBottom) { for (double r = 0; r <= 2 * Math.PI; r = r + 0.01) pointList.Add(new Point(0.5 * (st.X + ed.X) + a * Math.Cos(r), 0.5 * (st.Y + ed.Y) + b * Math.Sin(r))); } else { if (isDrawBottom) for (double r = 0; r <= Math.PI; r = r + 0.01) pointList.Add(new Point(0.5 * (st.X + ed.X) + a * Math.Cos(r), 0.5 * (st.Y + ed.Y) + b * Math.Sin(r))); if (isDrawTop) for (var r = Math.PI; r <= 2 * Math.PI; r = r + 0.01) pointList.Add(new Point(0.5 * (st.X + ed.X) + a * Math.Cos(r), 0.5 * (st.Y + ed.Y) + b * Math.Sin(r))); } return pointList; } private StrokeCollection GenerateDashedLineEllipseStrokeCollection(Point st, Point ed, bool isDrawTop = true, bool isDrawBottom = true) { var a = 0.5 * (ed.X - st.X); var b = 0.5 * (ed.Y - st.Y); var step = 0.05; var pointList = new List(); StylusPointCollection point; Stroke stroke; var strokes = new StrokeCollection(); if (isDrawBottom) for (var i = 0.0; i < 1.0; i += step * 1.66) { pointList = new List(); for (var r = Math.PI * i; r <= Math.PI * (i + step); r = r + 0.01) pointList.Add(new Point(0.5 * (st.X + ed.X) + a * Math.Cos(r), 0.5 * (st.Y + ed.Y) + b * Math.Sin(r))); point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); } if (isDrawTop) for (var i = 1.0; i < 2.0; i += step * 1.66) { pointList = new List(); for (var r = Math.PI * i; r <= Math.PI * (i + step); r = r + 0.01) pointList.Add(new Point(0.5 * (st.X + ed.X) + a * Math.Cos(r), 0.5 * (st.Y + ed.Y) + b * Math.Sin(r))); point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); } return strokes; } private Stroke GenerateLineStroke(Point st, Point ed) { var pointList = new List(); StylusPointCollection point; Stroke stroke; pointList = new List { new Point(st.X, st.Y), new Point(ed.X, ed.Y) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; return stroke; } private Stroke GenerateArrowLineStroke(Point st, Point ed) { var pointList = new List(); StylusPointCollection point; Stroke stroke; double w = 20, h = 7; var theta = Math.Atan2(st.Y - ed.Y, st.X - ed.X); var sint = Math.Sin(theta); var cost = Math.Cos(theta); pointList = new List { new Point(st.X, st.Y), new Point(ed.X, ed.Y), new Point(ed.X + (w * cost - h * sint), ed.Y + (w * sint + h * cost)), new Point(ed.X, ed.Y), new Point(ed.X + (w * cost + h * sint), ed.Y - (h * cost - w * sint)) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; return stroke; } private StrokeCollection GenerateDashedLineStrokeCollection(Point st, Point ed) { double step = 5; var pointList = new List(); StylusPointCollection point; Stroke stroke; var strokes = new StrokeCollection(); var d = GetDistance(st, ed); var sinTheta = (ed.Y - st.Y) / d; var cosTheta = (ed.X - st.X) / d; for (var i = 0.0; i < d; i += step * 2.76) { pointList = new List { new Point(st.X + i * cosTheta, st.Y + i * sinTheta), new Point(st.X + Math.Min(i + step, d) * cosTheta, st.Y + Math.Min(i + step, d) * sinTheta) }; point = new StylusPointCollection(pointList); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); } return strokes; } private StrokeCollection GenerateDotLineStrokeCollection(Point st, Point ed) { double step = 3; var pointList = new List(); StylusPointCollection point; Stroke stroke; var strokes = new StrokeCollection(); var d = GetDistance(st, ed); var sinTheta = (ed.Y - st.Y) / d; var cosTheta = (ed.X - st.X) / d; for (var i = 0.0; i < d; i += step * 2.76) { var stylusPoint = new StylusPoint(st.X + i * cosTheta, st.Y + i * sinTheta, (float)0.8); point = new StylusPointCollection(); point.Add(stylusPoint); stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; strokes.Add(stroke.Clone()); } return strokes; } private bool isMouseDown; private void inkCanvas_MouseDown(object sender, MouseButtonEventArgs e) { // 检查鼠标点击是否发生在浮动栏区域，如果是则允许事件传播到浮动栏按钮 var mousePoint = e.GetPosition(this); var floatingBarBounds = ViewboxFloatingBar.TransformToAncestor(this).TransformBounds( new Rect(0, 0, ViewboxFloatingBar.ActualWidth, ViewboxFloatingBar.ActualHeight)); // 如果鼠标点击发生在浮动栏区域，不阻止事件传播，让浮动栏按钮能够接收鼠标事件 if (floatingBarBounds.Contains(mousePoint)) { // 不设置 ViewboxFloatingBar.IsHitTestVisible = false，让浮动栏按钮能够接收鼠标事件 return; } inkCanvas.CaptureMouse(); ViewboxFloatingBar.IsHitTestVisible = false; BlackboardUIGridForInkReplay.IsHitTestVisible = false; isMouseDown = true; if (NeedUpdateIniP()) iniP = e.GetPosition(inkCanvas); } private void inkCanvas_MouseMove(object sender, MouseEventArgs e) { if (isMouseDown) MouseTouchMove(e.GetPosition(inkCanvas)); } private void inkCanvas_MouseUp(object sender, MouseButtonEventArgs e) { inkCanvas.ReleaseMouseCapture(); ViewboxFloatingBar.IsHitTestVisible = true; BlackboardUIGridForInkReplay.IsHitTestVisible = true; if (drawingShapeMode == 5) { if (lastTempStroke != null) { var circle = new Circle(new Point(), 0, lastTempStroke); circle.R = GetDistance(circle.Stroke.StylusPoints[0].ToPoint(), circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].ToPoint()) / 2; circle.Centroid = new Point( (circle.Stroke.StylusPoints[0].X + circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].X) / 2, (circle.Stroke.StylusPoints[0].Y + circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].Y) / 2); circles.Add(circle); } if (lastIsInMultiTouchMode) { // 不再重新启用开关，而是恢复多指书写相关的事件处理 // ToggleSwitchEnableMultiTouchMode.IsOn = true; // 恢复多指书写事件处理 inkCanvas.StylusDown += MainWindow_StylusDown; inkCanvas.StylusMove += MainWindow_StylusMove; inkCanvas.StylusUp += MainWindow_StylusUp; inkCanvas.TouchDown += MainWindow_TouchDown; lastIsInMultiTouchMode = false; } } // 修改此处逻辑，确保在正确的情况下才切换回笔模式 if (drawingShapeMode != 9 && drawingShapeMode != 0 && drawingShapeMode != 24 && drawingShapeMode != 25) { if (isLongPressSelected) { // 如果是长按选中的情况，保持图形模式，不做任何切换 isWaitUntilNextTouchDown = true; // 保持当前绘图模式直到下一次触摸 } else { BtnPen_Click(null, null); //画完一次还原到笔模式 if (lastIsInMultiTouchMode) { // 不再重新启用开关，而是恢复多指书写相关的事件处理 // ToggleSwitchEnableMultiTouchMode.IsOn = true; // 恢复多指书写事件处理 inkCanvas.StylusDown += MainWindow_StylusDown; inkCanvas.StylusMove += MainWindow_StylusMove; inkCanvas.StylusUp += MainWindow_StylusUp; inkCanvas.TouchDown += MainWindow_TouchDown; lastIsInMultiTouchMode = false; } } } if (drawingShapeMode == 9) { if (isFirstTouchCuboid) { if (CuboidStrokeCollection == null) CuboidStrokeCollection = new StrokeCollection(); isFirstTouchCuboid = false; var newIniP = new Point(Math.Min(CuboidFrontRectIniP.X, CuboidFrontRectEndP.X), Math.Min(CuboidFrontRectIniP.Y, CuboidFrontRectEndP.Y)); var newEndP = new Point(Math.Max(CuboidFrontRectIniP.X, CuboidFrontRectEndP.X), Math.Max(CuboidFrontRectIniP.Y, CuboidFrontRectEndP.Y)); CuboidFrontRectIniP = newIniP; CuboidFrontRectEndP = newEndP; try { CuboidStrokeCollection.Add(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } } else { BtnPen_Click(null, null); //画完还原到笔模式 if (lastIsInMultiTouchMode) { // 不再重新启用开关，而是恢复多指书写相关的事件处理 // ToggleSwitchEnableMultiTouchMode.IsOn = true; // 恢复多指书写事件处理 inkCanvas.StylusDown += MainWindow_StylusDown; inkCanvas.StylusMove += MainWindow_StylusMove; inkCanvas.StylusUp += MainWindow_StylusUp; inkCanvas.TouchDown += MainWindow_TouchDown; lastIsInMultiTouchMode = false; } if (_currentCommitType == CommitReason.ShapeDrawing) { try { CuboidStrokeCollection.Add(lastTempStrokeCollection); } catch { Trace.WriteLine("lastTempStrokeCollection failed."); } _currentCommitType = CommitReason.UserInput; timeMachine.CommitStrokeUserInputHistory(CuboidStrokeCollection); CuboidStrokeCollection = null; } } } if (drawingShapeMode == 24 || drawingShapeMode == 25) { if (drawMultiStepShapeCurrentStep == 0) { drawMultiStepShapeCurrentStep = 1; } else { drawMultiStepShapeCurrentStep = 0; if (drawMultiStepShapeSpecialStrokeCollection != null) { var opFlag = false; switch (Settings.Canvas.HyperbolaAsymptoteOption) { case OptionalOperation.Yes: opFlag = true; break; case OptionalOperation.No: opFlag = false; break; case OptionalOperation.Ask: opFlag = MessageBox.Show("是否移除渐近线？", "Ink Canvas", MessageBoxButton.YesNo) != MessageBoxResult.Yes; break; } ; if (!opFlag) inkCanvas.Strokes.Remove(drawMultiStepShapeSpecialStrokeCollection); } BtnPen_Click(null, null); //画完还原到笔模式 if (lastIsInMultiTouchMode) { // 不再重新启用开关，而是恢复多指书写相关的事件处理 // ToggleSwitchEnableMultiTouchMode.IsOn = true; // 恢复多指书写事件处理 inkCanvas.StylusDown += MainWindow_StylusDown; inkCanvas.StylusMove += MainWindow_StylusMove; inkCanvas.StylusUp += MainWindow_StylusUp; inkCanvas.TouchDown += MainWindow_TouchDown; lastIsInMultiTouchMode = false; } } } isMouseDown = false; if (ReplacedStroke != null || AddedStroke != null) { timeMachine.CommitStrokeEraseHistory(ReplacedStroke, AddedStroke); AddedStroke = null; ReplacedStroke = null; } if (_currentCommitType == CommitReason.ShapeDrawing && drawingShapeMode != 9) { _currentCommitType = CommitReason.UserInput; StrokeCollection collection = null; if (lastTempStrokeCollection != null && lastTempStrokeCollection.Count > 0) collection = lastTempStrokeCollection; else if (lastTempStroke != null) collection = new StrokeCollection { lastTempStroke }; if (collection != null) timeMachine.CommitStrokeUserInputHistory(collection); } lastTempStroke = null; lastTempStrokeCollection = null; if (StrokeManipulationHistory?.Count > 0) { timeMachine.CommitStrokeManipulationHistory(StrokeManipulationHistory); foreach (var item in StrokeManipulationHistory) { StrokeInitialHistory[item.Key] = item.Value.Item2; } StrokeManipulationHistory = null; } if (DrawingAttributesHistory.Count > 0) { timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory); DrawingAttributesHistory = new Dictionary>(); foreach (var item in DrawingAttributesHistoryFlag) { item.Value.Clear(); } } // 应用高级贝塞尔曲线平滑 if (Settings.Canvas.UseAdvancedBezierSmoothing) { try { // 对临时笔画应用平滑 if (lastTempStroke != null && _inkSmoothingManager != null) { var smoothedStroke = _inkSmoothingManager.SmoothStroke(lastTempStroke); if (smoothedStroke != lastTempStroke) { inkCanvas.Strokes.Remove(lastTempStroke); lastTempStroke = smoothedStroke; inkCanvas.Strokes.Add(smoothedStroke); } } } catch (Exception ex) { Debug.WriteLine($"形状绘制高级贝塞尔曲线平滑失败: {ex.Message}"); } } else if (Settings.Canvas.FitToCurve) { drawingAttributes.FitToCurve = true; } } private bool NeedUpdateIniP() { // 修复：双曲线绘制时，第二笔不应该更新起点，保持第一笔的起点 if (drawingShapeMode == 24 || drawingShapeMode == 25) { if (drawMultiStepShapeCurrentStep == 1) return false; // 第二笔不更新起点 } return true; } private void MainWindow_OnMouseMove(object sender, MouseEventArgs e) { if (e.StylusDevice == null) { // 鼠标移动时保持光标可见 System.Windows.Forms.Cursor.Show(); // 如果用户设置了显示光标，则确保光标显示正确 if (Settings.Canvas.IsShowCursor && inkCanvas != null) { inkCanvas.ForceCursor = true; inkCanvas.UseCustomCursor = true; } } else { // 只有当用户未设置显示光标时才隐藏 if (!Settings.Canvas.IsShowCursor) { System.Windows.Forms.Cursor.Hide(); } else if (inkCanvas != null) { // 如果用户设置了显示光标，则确保光标显示正确 inkCanvas.ForceCursor = true; inkCanvas.UseCustomCursor = true; System.Windows.Forms.Cursor.Show(); } } } private void EnterShapeDrawingMode(int mode) { forceEraser = true; forcePointEraser = false; drawingShapeMode = mode; inkCanvas.EditingMode = InkCanvasEditingMode.None; SetCursorBasedOnEditingMode(inkCanvas); ResetAllShapeButtonsOpacity(); } /// /// 重置所有几何绘制按钮的透明度状态 /// private void ResetAllShapeButtonsOpacity() { try { // 重置所有几何绘制按钮的透明度为1（完全不透明） var buttons = new UIElement[] { ImageDrawLine, BoardImageDrawLine, ImageDrawDashedLine, BoardImageDrawDashedLine, ImageDrawDotLine, BoardImageDrawDotLine, ImageDrawArrow, BoardImageDrawArrow, ImageDrawParallelLine, BoardImageDrawParallelLine, }; foreach (var button in buttons) { if (button != null) { var dA = new DoubleAnimation(1, 1, new Duration(TimeSpan.FromMilliseconds(0))); button.BeginAnimation(OpacityProperty, dA); } } } catch (Exception ex) { LogHelper.WriteLogToFile($"重置几何绘制按钮透明度失败: {ex.Message}", LogHelper.LogType.Error); } } /// /// 绘制圆心标记 /// /// 圆心位置 private void DrawCircleCenter(Point centerPoint) { try { // 创建一个点作为圆心标记 var centerSize = 0.5; // 圆心标记的大小 // 创建一个小圆作为圆心标记 var circlePoints = new List(); for (double angle = 0; angle <= 2 * Math.PI; angle += 0.1) { circlePoints.Add(new Point( centerPoint.X + centerSize * Math.Cos(angle), centerPoint.Y + centerSize * Math.Sin(angle) )); } // 绘制圆心点 var point = new StylusPointCollection(circlePoints); var stroke = new Stroke(point) { DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone() }; // 设置圆心点的样式 stroke.DrawingAttributes.Width = 2.0; stroke.DrawingAttributes.Height = 2.0; // 添加到画布 inkCanvas.Strokes.Add(stroke); } catch (Exception ex) { Debug.WriteLine($"绘制圆心标记失败: {ex.Message}"); } } } }