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fix:墨迹纠正

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CJK_mkp
2025-06-18 13:24:50 +08:00
parent 5f828736de
commit 7750fa799d
4 changed files with 167 additions and 145 deletions
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Ink Canvas/MainWindow_cs/MW_SimulatePressure&InkToShape.cs
+165 -143
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@@ -13,6 +13,8 @@ namespace Ink_Canvas {
public partial class MainWindow : Window {
private StrokeCollection newStrokes = new StrokeCollection();
private List<Circle> circles = new List<Circle>();
private const double SNAP_THRESHOLD = 15.0; // Distance threshold for endpoint snapping
private const double LINE_STRAIGHTEN_THRESHOLD = 0.15; // Threshold for line straightening
private void inkCanvas_StrokeCollected(object sender, InkCanvasStrokeCollectedEventArgs e) {
if (Settings.Canvas.FitToCurve == true) drawingAttributes.FitToCurve = false;
@@ -20,108 +22,50 @@ namespace Ink_Canvas {
try {
inkCanvas.Opacity = 1;
// 直线自动拉直功能
if (Settings.Canvas.AutoStraightenLine && e.Stroke.StylusPoints.Count > 1 && drawingShapeMode == 0 && penType == 0) {
// 获取起点和终点
StylusPoint startPoint = e.Stroke.StylusPoints[0];
StylusPoint endPoint = e.Stroke.StylusPoints[e.Stroke.StylusPoints.Count - 1];
// 计算直线长度
double length = Math.Sqrt(Math.Pow(endPoint.X - startPoint.X, 2) + Math.Pow(endPoint.Y - startPoint.Y, 2));
// 判断是否需要拉直
if (length >= Settings.Canvas.AutoStraightenLineThreshold) {
// 判断是否符合直线特征（计算点到直线的最大距离）
double maxDistance = 0;
for (int i = 1; i < e.Stroke.StylusPoints.Count - 1; i++) {
StylusPoint point = e.Stroke.StylusPoints[i];
double distance = DistanceFromPointToLine(point, startPoint, endPoint);
maxDistance = Math.Max(maxDistance, distance);
}
// Apply line straightening and endpoint snapping if ink-to-shape is enabled
if (Settings.InkToShape.IsInkToShapeEnabled) {
// Check if this stroke could be a straight line
if (IsPotentialStraightLine(e.Stroke)) {
// Get start and end points of the stroke
Point startPoint = e.Stroke.StylusPoints[0].ToPoint();
Point endPoint = e.Stroke.StylusPoints[e.Stroke.StylusPoints.Count - 1].ToPoint();
// 如果最大距离小于线长的15%，认为是直线
if (maxDistance < length * 0.15) {
// 创建新的直线点集合
StylusPointCollection newPoints = new StylusPointCollection();
// 直线端点吸附功能
if (Settings.Canvas.LineEndpointSnapping) {
bool startPointSnapped = false;
bool endPointSnapped = false;
// 获取画布上的所有笔画
StrokeCollection allStrokes = inkCanvas.Strokes;
// 排除当前笔画
StrokeCollection otherStrokes = new StrokeCollection();
foreach (Stroke stroke in allStrokes) {
if (stroke != e.Stroke) {
otherStrokes.Add(stroke);
}
}
// 查找最近的端点
double minStartDistance = Settings.Canvas.LineEndpointSnappingThreshold;
double minEndDistance = Settings.Canvas.LineEndpointSnappingThreshold;
StylusPoint nearestToStart = startPoint;
StylusPoint nearestToEnd = endPoint;
foreach (Stroke stroke in otherStrokes) {
// 只考虑直线（只有两个点的笔画）
if (stroke.StylusPoints.Count == 2) {
StylusPoint strokeStart = stroke.StylusPoints[0];
StylusPoint strokeEnd = stroke.StylusPoints[1];
// 计算当前笔画起点到其他笔画端点的距离
double distanceToStrokeStart = Distance(startPoint, strokeStart);
double distanceToStrokeEnd = Distance(startPoint, strokeEnd);
// 如果距离小于阈值且小于当前最小距离，更新最近点
if (distanceToStrokeStart < minStartDistance) {
minStartDistance = distanceToStrokeStart;
nearestToStart = strokeStart;
startPointSnapped = true;
}
if (distanceToStrokeEnd < minStartDistance) {
minStartDistance = distanceToStrokeEnd;
nearestToStart = strokeEnd;
startPointSnapped = true;
}
// 计算当前笔画终点到其他笔画端点的距离
double distanceEndToStrokeStart = Distance(endPoint, strokeStart);
double distanceEndToStrokeEnd = Distance(endPoint, strokeEnd);
// 如果距离小于阈值且小于当前最小距离，更新最近点
if (distanceEndToStrokeStart < minEndDistance) {
minEndDistance = distanceEndToStrokeStart;
nearestToEnd = strokeStart;
endPointSnapped = true;
}
if (distanceEndToStrokeEnd < minEndDistance) {
minEndDistance = distanceEndToStrokeEnd;
nearestToEnd = strokeEnd;
endPointSnapped = true;
}
}
}
// 应用吸附结果
newPoints.Add(startPointSnapped ? nearestToStart : startPoint);
newPoints.Add(endPointSnapped ? nearestToEnd : endPoint);
} else {
// 不启用吸附，直接使用原始端点
newPoints.Add(startPoint);
newPoints.Add(endPoint);
// Try to snap endpoints to existing strokes
bool snapped = false;
if (Settings.InkToShape.IsInkToShapeRectangle || Settings.InkToShape.IsInkToShapeTriangle) {
Point[] snappedPoints = GetSnappedEndpoints(startPoint, endPoint);
if (snappedPoints != null) {
startPoint = snappedPoints[0];
endPoint = snappedPoints[1];
snapped = true;
}
}
// Create straight line stroke
if (snapped || ShouldStraightenLine(e.Stroke)) {
StylusPointCollection straightLinePoints = CreateStraightLine(startPoint, endPoint);
Stroke straightStroke = new Stroke(straightLinePoints) {
DrawingAttributes = inkCanvas.DefaultDrawingAttributes.Clone()
};
// 替换原有笔迹
e.Stroke.StylusPoints = newPoints;
// Replace the original stroke with the straightened one
SetNewBackupOfStroke();
_currentCommitType = CommitReason.ShapeRecognition;
inkCanvas.Strokes.Remove(e.Stroke);
inkCanvas.Strokes.Add(straightStroke);
_currentCommitType = CommitReason.UserInput;
// We can't modify e.Stroke directly, but we need to update newStrokes
// to ensure proper shape recognition for the straightened line
if (newStrokes.Contains(e.Stroke)) {
newStrokes.Remove(e.Stroke);
newStrokes.Add(straightStroke);
}
}
}
}
if (Settings.InkToShape.IsInkToShapeEnabled && drawingShapeMode == 0 && !isInMultiTouchMode && penType == 0) {
if (Settings.InkToShape.IsInkToShapeEnabled && !Environment.Is64BitProcess) {
void InkToShapeProcess() {
try {
newStrokes.Add(e.Stroke);
@@ -422,27 +366,13 @@ namespace Ink_Canvas {
InkToShapeProcess();
}
// 如果启用了屏蔽压感功能，强制所有点的压感值为0.5
if (Settings.Canvas.DisablePressure) {
var stylusPoints = new StylusPointCollection();
foreach (var point in e.Stroke.StylusPoints) {
var newPoint = new StylusPoint(point.X, point.Y, 0.5f);
stylusPoints.Add(newPoint);
}
e.Stroke.StylusPoints = stylusPoints;
return; // 跳过后续的压感处理
}
// 检查是否是压感笔书写，如果启用了压感触屏模式则跳过此检查
if (!Settings.Canvas.EnablePressureTouchMode) {
foreach (var stylusPoint in e.Stroke.StylusPoints)
//LogHelper.WriteLogToFile(stylusPoint.PressureFactor.ToString(), LogHelper.LogType.Info);
// 检查是否是压感笔书写
//if (stylusPoint.PressureFactor != 0.5 && stylusPoint.PressureFactor != 0)
if ((stylusPoint.PressureFactor > 0.501 || stylusPoint.PressureFactor < 0.5) &&
stylusPoint.PressureFactor != 0)
return;
}
foreach (var stylusPoint in e.Stroke.StylusPoints)
//LogHelper.WriteLogToFile(stylusPoint.PressureFactor.ToString(), LogHelper.LogType.Info);
// 检查是否是压感笔书写
//if (stylusPoint.PressureFactor != 0.5 && stylusPoint.PressureFactor != 0)
if ((stylusPoint.PressureFactor > 0.501 || stylusPoint.PressureFactor < 0.5) &&
stylusPoint.PressureFactor != 0)
return;
try {
if (e.Stroke.StylusPoints.Count > 3) {
@@ -538,6 +468,124 @@ namespace Ink_Canvas {
if (Settings.Canvas.FitToCurve == true) drawingAttributes.FitToCurve = true;
}
// New method: Checks if a stroke is potentially a straight line
private bool IsPotentialStraightLine(Stroke stroke) {
// Minimum length for line detection
if (stroke.StylusPoints.Count < 5)
return false;
Point start = stroke.StylusPoints.First().ToPoint();
Point end = stroke.StylusPoints.Last().ToPoint();
double lineLength = GetDistance(start, end);
// Line should be longer than 30 pixels
return lineLength > 30;
}
// New method: Determines if a stroke should be straightened into a line
private bool ShouldStraightenLine(Stroke stroke) {
// Basic implementation: check if points roughly follow a straight line
Point start = stroke.StylusPoints.First().ToPoint();
Point end = stroke.StylusPoints.Last().ToPoint();
// Calculate max deviation from the straight line between start and end
double maxDeviation = 0;
double lineLength = GetDistance(start, end);
// Calculate deviation for each point
foreach (StylusPoint sp in stroke.StylusPoints) {
Point p = sp.ToPoint();
double deviation = DistanceFromLineToPoint(start, end, p);
maxDeviation = Math.Max(maxDeviation, deviation);
}
// If maximum deviation is less than threshold relative to line length
return (maxDeviation / lineLength) < LINE_STRAIGHTEN_THRESHOLD;
}
// New method: Creates a straight line stroke between two points
private StylusPointCollection CreateStraightLine(Point start, Point end) {
StylusPointCollection points = new StylusPointCollection();
// Create a more natural pressure profile for the line
if (Settings.InkToShape.IsInkToShapeNoFakePressureRectangle == true || penType == 1) {
points.Add(new StylusPoint(start.X, start.Y));
points.Add(new StylusPoint(end.X, end.Y));
} else {
points.Add(new StylusPoint(start.X, start.Y, 0.4f));
// Add a middle point with higher pressure
Point midPoint = new Point((start.X + end.X) / 2, (start.Y + end.Y) / 2);
points.Add(new StylusPoint(midPoint.X, midPoint.Y, 0.8f));
points.Add(new StylusPoint(end.X, end.Y, 0.4f));
}
return points;
}
// New method: Gets distance from point to a line defined by two points
private double DistanceFromLineToPoint(Point lineStart, Point lineEnd, Point point) {
// Calculate distance from point to line defined by lineStart and lineEnd
double lineLength = GetDistance(lineStart, lineEnd);
if (lineLength == 0) return GetDistance(point, lineStart);
// Calculate the cross product to get the perpendicular distance
double distance = Math.Abs((lineEnd.Y - lineStart.Y) * point.X -
(lineEnd.X - lineStart.X) * point.Y +
lineEnd.X * lineStart.Y - lineEnd.Y * lineStart.X) / lineLength;
return distance;
}
// New method: Attempts to snap endpoints to existing stroke endpoints
private Point[] GetSnappedEndpoints(Point start, Point end) {
bool startSnapped = false;
bool endSnapped = false;
Point snappedStart = start;
Point snappedEnd = end;
// Check all strokes in canvas for potential snap points
foreach (Stroke stroke in inkCanvas.Strokes) {
if (stroke.StylusPoints.Count == 0) continue;
// Get stroke endpoints
Point strokeStart = stroke.StylusPoints.First().ToPoint();
Point strokeEnd = stroke.StylusPoints.Last().ToPoint();
// Check if start point should snap to an endpoint
if (!startSnapped) {
if (GetDistance(start, strokeStart) < SNAP_THRESHOLD) {
snappedStart = strokeStart;
startSnapped = true;
} else if (GetDistance(start, strokeEnd) < SNAP_THRESHOLD) {
snappedStart = strokeEnd;
startSnapped = true;
}
}
// Check if end point should snap to an endpoint
if (!endSnapped) {
if (GetDistance(end, strokeStart) < SNAP_THRESHOLD) {
snappedEnd = strokeStart;
endSnapped = true;
} else if (GetDistance(end, strokeEnd) < SNAP_THRESHOLD) {
snappedEnd = strokeEnd;
endSnapped = true;
}
}
// If both endpoints are snapped, we're done
if (startSnapped && endSnapped) break;
}
// Return snapped points if any snapping occurred
if (startSnapped || endSnapped) {
return new Point[] { snappedStart, snappedEnd };
}
return null;
}
private void SetNewBackupOfStroke() {
lastTouchDownStrokeCollection = inkCanvas.Strokes.Clone();
var whiteboardIndex = CurrentWhiteboardIndex;
@@ -656,31 +704,5 @@ namespace Ink_Canvas {
public StylusPoint GetCenterPoint(StylusPoint point1, StylusPoint point2) {
return new StylusPoint((point1.X + point2.X) / 2, (point1.Y + point2.Y) / 2);
}
/// <summary>
/// 计算点到直线的距离
/// </summary>
/// <param name="point">点</param>
/// <param name="lineStart">直线起点</param>
/// <param name="lineEnd">直线终点</param>
/// <returns>距离</returns>
private double DistanceFromPointToLine(StylusPoint point, StylusPoint lineStart, StylusPoint lineEnd) {
double lineLength = Math.Sqrt(Math.Pow(lineEnd.X - lineStart.X, 2) + Math.Pow(lineEnd.Y - lineStart.Y, 2));
if (lineLength == 0) return 0;
double area = Math.Abs(
(lineEnd.X - lineStart.X) * (lineStart.Y - point.Y) -
(lineStart.X - point.X) * (lineEnd.Y - lineStart.Y)
);
return area / lineLength;
}
/// <summary>
/// 计算两点之间的距离
/// </summary>
private double Distance(StylusPoint p1, StylusPoint p2) {
return Math.Sqrt(Math.Pow(p2.X - p1.X, 2) + Math.Pow(p2.Y - p1.Y, 2));
}
}
}
Ink Canvas/obj/Debug/net472/InkCanvasForClass.csproj.ResolveComReference.cache
BIN
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Ink Canvas/obj/Debug/net472/MainWindow.g.cs
+1 -1
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@@ -1,4 +1,4 @@
#pragma checksum "..\..\..\MainWindow.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "7158EF500B0E626111E3DA2EB7F7E2C619CF99C3"
#pragma checksum "..\..\..\MainWindow.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "3534D393809CDD9697B78029AB0FBB8706EB7F66"
//------------------------------------------------------------------------------
// <auto-generated>
// 此代码由工具生成。
Ink Canvas/obj/Debug/net472/MainWindow.g.i.cs
+1 -1
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@@ -1,4 +1,4 @@
#pragma checksum "..\..\..\MainWindow.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "7158EF500B0E626111E3DA2EB7F7E2C619CF99C3"
#pragma checksum "..\..\..\MainWindow.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "3534D393809CDD9697B78029AB0FBB8706EB7F66"
//------------------------------------------------------------------------------
// <auto-generated>
// 此代码由工具生成。