public static void Zoom(this Viewport2D viewport, double factor) { DataRect visible = viewport.Visible; DataRect oldVisible = visible; Point center = visible.GetCenter(); Vector halfSize = new Vector(visible.Width * factor / 2, visible.Height * factor / 2); viewport.Visible = new DataRect(center - halfSize, center + halfSize); viewport.Plotter.UndoProvider.AddAction(new DependencyPropertyChangedUndoAction(viewport, Viewport2D.VisibleProperty, oldVisible, visible)); }
public static void Zoom(this Viewport2D viewport, double factor) { if (factor > 1 && viewport.Visible.XMax - viewport.Visible.XMin > 2000) { return; } else if (factor < 1 && viewport.Visible.XMax - viewport.Visible.XMin < 1) { return; } DataRect visible = viewport.Visible; DataRect oldVisible = visible; Point center = visible.GetCenter(); Vector halfSize = new Vector(visible.Width * factor / 2, visible.Height * factor / 2); //Vector halfSize = new Vector(visible.Width * factor / 2, visible.Height / 2);//Y轴不能被缩放 viewport.Visible = new DataRect(center - halfSize, center + halfSize); viewport.Plotter.UndoProvider.AddAction(new DependencyPropertyChangedUndoAction(viewport, Viewport2D.VisibleProperty, oldVisible, visible)); }
public static DataRect RectZoom(DataRect rect, double horizontalRatio, double verticalRatio) { return(RectZoom(rect, rect.GetCenter(), horizontalRatio, verticalRatio)); }
public static DataRect RectZoom(DataRect rect, double ratio) { return(RectZoom(rect, rect.GetCenter(), ratio)); }
private DataRect CoerceVisible(DataRect newVisible) { if (Plotter == null) { return newVisible; } bool isDefaultValue = newVisible == (DataRect)VisibleProperty.DefaultMetadata.DefaultValue; if (isDefaultValue) { newVisible = DataRect.Empty; } if (isDefaultValue && IsFittedToView) { // determining content bounds DataRect bounds = DataRect.Empty; foreach (var item in contentBoundsHosts) { var visual = plotter.VisualBindings[item]; if (visual.Visibility == Visibility.Visible) { DataRect contentBounds = (DataRect)visual.GetValue(Viewport2D.ContentBoundsProperty); bounds.UnionFinite(contentBounds); } } DataRect viewportBounds = bounds; ContentBounds = bounds; // applying fit-to-view restrictions bounds = fitToViewRestrictions.Apply(Visible, bounds, this); // enlarging if (!bounds.IsEmpty) { bounds = CoordinateUtilities.RectZoom(bounds, bounds.GetCenter(), clipToBoundsEnlargeFactor); } else { bounds = (DataRect)VisibleProperty.DefaultMetadata.DefaultValue; } newVisible.Union(bounds); } if (newVisible.IsEmpty) { newVisible = (DataRect)VisibleProperty.DefaultMetadata.DefaultValue; } else if (newVisible.Width == 0 || newVisible.Height == 0) { DataRect defRect = (DataRect)VisibleProperty.DefaultMetadata.DefaultValue; Size size = newVisible.Size; Point loc = newVisible.Location; if (newVisible.Width == 0) { size.Width = defRect.Width; loc.X -= size.Width / 2; } if (newVisible.Height == 0) { size.Height = defRect.Height; loc.Y -= size.Height / 2; } newVisible = new DataRect(loc, size); } // apply domain restriction newVisible = domainRestriction.Apply(Visible, newVisible, this); // apply other restrictions newVisible = restrictions.Apply(Visible, newVisible, this); // applying transform's data domain restriction if (!transform.DataTransform.DataDomain.IsEmpty) { var newDataRect = newVisible.ViewportToData(transform); newDataRect = DataRect.Intersect(newDataRect, transform.DataTransform.DataDomain); newVisible = newDataRect.DataToViewport(transform); } if (newVisible.IsEmpty) newVisible = new Rect(0, 0, 1, 1); return newVisible; }
protected virtual DataRect CoerceVisible(DataRect newVisible) { if (Plotter == null) { return(newVisible); } bool isDefaultValue = newVisible == (DataRect)VisibleProperty.DefaultMetadata.DefaultValue; if (isDefaultValue) { newVisible = DataRect.Empty; } if (isDefaultValue && IsFittedToView) { // determining content bounds DataRect bounds = DataRect.Empty; foreach (var item in contentBoundsHosts) { IPlotterElement plotterElement = item as IPlotterElement; if (plotterElement == null) { continue; } if (plotterElement.Plotter == null) { continue; } var plotter = (Plotter2D)plotterElement.Plotter; var visual = plotter.VisualBindings[plotterElement]; if (visual.Visibility == Visibility.Visible) { DataRect contentBounds = Viewport2D.GetContentBounds(item); if (contentBounds.Width.IsNaN() || contentBounds.Height.IsNaN()) { continue; } bounds.UnionFinite(contentBounds); } } if (useApproximateContentBoundsComparison) { var intersection = prevContentBounds; intersection.Intersect(bounds); double currSquare = bounds.GetSquare(); double prevSquare = prevContentBounds.GetSquare(); double intersectionSquare = intersection.GetSquare(); double squareTopLimit = 1 + maxContentBoundsComparisonMistake; double squareBottomLimit = 1 - maxContentBoundsComparisonMistake; if (intersectionSquare != 0) { double currRatio = currSquare / intersectionSquare; double prevRatio = prevSquare / intersectionSquare; if (squareBottomLimit < currRatio && currRatio < squareTopLimit && squareBottomLimit < prevRatio && prevRatio < squareTopLimit) { bounds = prevContentBounds; } } } prevContentBounds = bounds; UnitedContentBounds = bounds; // applying fit-to-view constraints bounds = fitToViewConstraints.Apply(Visible, bounds, this); // enlarging if (!bounds.IsEmpty) { bounds = CoordinateUtilities.RectZoom(bounds, bounds.GetCenter(), clipToBoundsEnlargeFactor); } else { bounds = (DataRect)VisibleProperty.DefaultMetadata.DefaultValue; } newVisible.Union(bounds); } if (newVisible.IsEmpty) { newVisible = (DataRect)VisibleProperty.DefaultMetadata.DefaultValue; } else if (newVisible.Width == 0 || newVisible.Height == 0) { DataRect defRect = (DataRect)VisibleProperty.DefaultMetadata.DefaultValue; Size size = newVisible.Size; Point location = newVisible.Location; if (newVisible.Width == 0) { size.Width = defRect.Width; location.X -= size.Width / 2; } if (newVisible.Height == 0) { size.Height = defRect.Height; location.Y -= size.Height / 2; } newVisible = new DataRect(location, size); } // apply domain constraint newVisible = domainConstraint.Apply(Visible, newVisible, this); // apply other restrictions if (enforceConstraints) { newVisible = constraints.Apply(Visible, newVisible, this); } // applying transform's data domain constraint if (!transform.DataTransform.DataDomain.IsEmpty) { var newDataRect = newVisible.ViewportToData(transform); newDataRect = DataRect.Intersect(newDataRect, transform.DataTransform.DataDomain); newVisible = newDataRect.DataToViewport(transform); } if (newVisible.IsEmpty) { newVisible = new Rect(0, 0, 1, 1); } return(newVisible); }
public static DataRect ZoomInToCenter(this DataRect rect, double ratio) { return(CoordinateUtilities.RectZoom(rect, rect.GetCenter(), 1 / ratio)); }