/// <summary>
/// Compares two nodes and returns a value indicating whether the first node's
/// distance to the point is less than, equal to or greater than the second
/// node's distance to the specified point.
/// </summary>
/// <param name="o1">The first node to compare.</param>
/// <param name="o2">The second node to compare.</param>
/// <returns>
/// Less than 0, if o1's distance to the point is less than o2's distance to the
/// point; 0 if o1's distance to the point equals 02's distance to the point;
/// greater than 0 if o1's distance to the point is greater than o2's distance to
/// the point.
/// </returns>
public int Compare(object o1, object o2)
{
PNode each1 = (PNode)o1;
PNode each2 = (PNode)o2;
PointF each1Center = PUtil.CenterOfRectangle(each1.GlobalFullBounds);
PointF each2Center = PUtil.CenterOfRectangle(each2.GlobalFullBounds);
if (!NODE_TO_GLOBAL_NODE_CENTER_MAPPING.Contains(each1))
{
NODE_TO_GLOBAL_NODE_CENTER_MAPPING.Add(each1, each1Center);
}
if (!NODE_TO_GLOBAL_NODE_CENTER_MAPPING.Contains(each2))
{
NODE_TO_GLOBAL_NODE_CENTER_MAPPING.Add(each2, each2Center);
}
float distance1 = PUtil.DistanceBetweenPoints(point, each1Center);
float distance2 = PUtil.DistanceBetweenPoints(point, each2Center);
if (distance1 < distance2)
{
return(-1);
}
else if (distance1 == distance2)
{
return(0);
}
else
{
return(1);
}
}
/// <summary>
/// Force this handle to relocate itself using its locator.
/// </summary>
public virtual void RelocateHandle()
{
if (locator != null)
{
RectangleFx b = Bounds;
PointFx aPoint = locator.LocatePoint;
if (locator is PNodeLocator)
{
PNode located = ((PNodeLocator)locator).Node;
PNode parent = Parent;
aPoint = located.LocalToGlobal(aPoint);
aPoint = GlobalToLocal(aPoint);
if (parent != located && parent is PCamera)
{
aPoint = ((PCamera)parent).ViewToLocal(aPoint);
}
}
float newCenterX = aPoint.X;
float newCenterY = aPoint.Y;
PointFx bCenter = PUtil.CenterOfRectangle(b);
if (newCenterX != bCenter.X ||
newCenterY != bCenter.Y)
{
CenterBoundsOnPoint(newCenterX, newCenterY);
}
}
}
/// <summary>
/// Animates the camera's view to keep the focus node on the screen and at 100
/// percent scale with minimal view movement.
/// </summary>
/// <param name="aCamera">The camera whose view will be animated.</param>
/// <param name="aFocusNode">The focus node to animate to.</param>
/// <param name="duration">The length of the animation.</param>
/// <returns>
/// The activity that animates the camera's view to the focus node.
/// </returns>
public virtual PActivity DirectCameraViewToFocus(PCamera aCamera, PNode aFocusNode, int duration)
{
PMatrix originalViewMatrix = aCamera.ViewMatrix;
// Scale the canvas to include
SizeF s = new SizeF(1, 0);
s = focusNode.GlobalToLocal(s);
float scaleFactor = s.Width / aCamera.ViewScale;
PointF scalePoint = PUtil.CenterOfRectangle(focusNode.GlobalFullBounds);
if (scaleFactor != 1)
{
aCamera.ScaleViewBy(scaleFactor, scalePoint.X, scalePoint.Y);
}
// Pan the canvas to include the view bounds with minimal canvas
// movement.
aCamera.AnimateViewToPanToBounds(focusNode.GlobalFullBounds, 0);
// Get rid of any white space. The canvas may be panned and
// zoomed in to do this. But make sure not stay constrained by max
// magnification.
//FillViewWhiteSpace(aCamera);
PMatrix resultingMatrix = aCamera.ViewMatrix;
aCamera.ViewMatrix = originalViewMatrix;
// Animate the canvas so that it ends up with the given
// view transform.
return(AnimateCameraViewMatrixTo(aCamera, resultingMatrix, duration));
}
/// <summary>
/// Applies a previously set constraint to the camera's view matrix.
/// </summary>
public virtual void ApplyViewConstraints()
{
if (viewConstraint == CameraViewConstraint.None)
{
return;
}
RectangleF layerBounds = GlobalToLocal(UnionOfLayerFullBounds);
SizeF constraintDelta = new SizeF(0, 0);
switch (viewConstraint)
{
case CameraViewConstraint.All:
constraintDelta = PUtil.DeltaRequiredToContain(ViewBounds, layerBounds);
break;
case CameraViewConstraint.Center:
layerBounds.Location = PUtil.CenterOfRectangle(layerBounds);
layerBounds.Width = 0;
layerBounds.Height = 0;
constraintDelta = PUtil.DeltaRequiredToContain(ViewBounds, layerBounds);
break;
}
viewMatrix.TranslateBy(-constraintDelta.Width, -constraintDelta.Height);
}
/// <summary>
/// Gets the nearest neighbor in the specified direction.
/// </summary>
/// <param name="aDirection">
/// The direction in which to find the nearest neighbor.
/// </param>
/// <returns>The nearest neighbor in the specified direction.</returns>
public virtual PNode GetNeighborInDirection(Direction aDirection)
{
if (focusNode == null)
{
return(null);
}
NODE_TO_GLOBAL_NODE_CENTER_MAPPING.Clear();
PointF highlightCenter = PUtil.CenterOfRectangle(focusNode.GlobalFullBounds);
NODE_TO_GLOBAL_NODE_CENTER_MAPPING.Add(focusNode, highlightCenter);
PNodeList l = GetNeighbors();
SortNodesByDistanceFromPoint(l, highlightCenter);
foreach (PNode each in l)
{
if (NodeIsNeighborInDirection(each, aDirection))
{
return(each);
}
}
return(null);
}
/// <summary>
/// Applies a previously set constraint to the camera's view matrix.
/// </summary>
public virtual void ApplyViewConstraints()
{
if (viewConstraint == CameraViewConstraint.None)
{
return;
}
RectangleFx layerBounds = GlobalToLocal(UnionOfLayerFullBounds);
SizeFx constraintDelta = new SizeFx(0, 0);
switch (viewConstraint)
{
case CameraViewConstraint.All:
constraintDelta = PUtil.DeltaRequiredToContain(ViewBounds, layerBounds);
break;
case CameraViewConstraint.Center:
PointFx layerLocation = PUtil.CenterOfRectangle(layerBounds);
//layerBounds.Width = 0;
//layerBounds.Height = 0;
layerBounds = new RectangleFx(layerLocation.X, layerLocation.Y, 0, 0);
constraintDelta = PUtil.DeltaRequiredToContain(ViewBounds, layerBounds);
break;
}
this.viewMatrix = MatrixExtensions.TranslateBy(viewMatrix, -constraintDelta.Width, -constraintDelta.Height);
}
public void UpdateLink()
{
PointFx p1 = PUtil.CenterOfRectangle(node1.FullBounds);
PointFx p2 = PUtil.CenterOfRectangle(node2.FullBounds);
link.Reset();
link.AddLine(p1.X, p1.Y, p2.X, p2.Y);
}
public override void OnMouseUp(object sender, PInputEventArgs e)
{
newP = PUtil.CenterOfRectangle(target.Camera.ViewBounds);
colBarLayer.TranslateBy(0, (oldP.Y - newP.Y)
/ target.Layer.Scale);
rowBarLayer.TranslateBy((oldP.X - newP.X)
/ target.Layer.Scale, 0);
}
//! Создает линии - связи между узлами на графе диалогов
public static void updateEdge(PPath edge)
{
// Note that the node's "FullBounds" must be used (instead of just the "Bound")
// because the nodes have non-identity transforms which must be included when
// determining their position.
ArrayList nodes = (ArrayList)edge.Tag;
PNode node1 = (PNode)nodes[0];
PNode node2 = (PNode)nodes[1];
PointF start = PUtil.CenterOfRectangle(node1.FullBounds);
PointF end = PUtil.CenterOfRectangle(node2.FullBounds);
edge.Reset();
edge.AddLine(start.X, start.Y, end.X, end.Y);
}
/// <summary>
/// Animates the camera's view to keep the control node on the screen and at 100
/// percent scale with minimal view movement.
/// </summary>
/// <param name="aCamera">The camera whose view will be animated.</param>
/// <param name="aControlNode">The control node to animate to.</param>
/// <param name="path">The pick path through which the control node was picked.</param>
/// <param name="duration">The length of the animation.</param>
/// <returns>
/// The activity that animates the camera's view to the control node.
/// </returns>
public virtual PActivity DirectCameraViewToControl(PCamera aCamera, PControl aControlNode, PPickPath path, int duration)
{
Matrix originalViewMatrix = aCamera.ViewMatrix;
// Scale the canvas to include
SizeFx s = new SizeFx(1, 0);
s = aControlNode.GlobalToLocal(s);
float scaleFactor = s.Width / aCamera.ViewScale;
PointFx scalePoint = PUtil.CenterOfRectangle(aControlNode.GlobalFullBounds);
if (scaleFactor != 1)
{
aCamera.ScaleViewBy(scaleFactor, scalePoint.X, scalePoint.Y);
}
// Pan the canvas to include the view bounds with minimal canvas
// movement.
aCamera.AnimateViewToPanToBounds(aControlNode.GlobalFullBounds, 0);
// Get rid of any white space. The canvas may be panned and
// zoomed in to do this. But make sure not stay constrained by max
// magnification.
//FillViewWhiteSpace(aCamera);
Matrix resultingMatrix = aCamera.ViewMatrix;
aCamera.ViewMatrix = originalViewMatrix;
PControl controlNode = (PControl)aControlNode;
// Animate the canvas so that it ends up with the given
// view transform.
PActivity animateCameraViewActivity = AnimateCameraViewMatrixTo(aCamera, resultingMatrix, duration);
aCamera.Root.WaitForActivities();
Matrix pathTransform = path.GetPathTransformTo(controlNode);
PointFx point = new PointFx(controlNode.X, controlNode.Y);
PointFx pf = MatrixExtensions.Transform(pathTransform, point);
controlNode.ControlLocation = new System.Drawing.Point((int)pf.X, (int)pf.Y);
controlNode.CurrentCanvas = path.TopCamera.Canvas;
controlNode.Editing = true;
return(animateCameraViewActivity);
}
//****************************************************************
// Animation - Methods to animate the camera's view.
//****************************************************************
/// <summary>
/// Animate the camera's view from its current matrix when the activity starts
/// to a new matrix that centers the given bounds in the camera layers' coordinate
/// system into the camera's view bounds.
/// </summary>
/// <param name="centerBounds">The bounds to center the view on.</param>
/// <param name="shouldScaleToFit">
/// Indicates whether the camera should scale it's view when necessary to fully fit
/// the given bounds within the camera's view bounds.
/// </param>
/// <param name="duration">The amount of time that the animation should take.</param>
/// <returns>
/// The newly scheduled activity, if the duration is greater than 0; else null.
/// </returns>
/// <remarks>
/// If the duration is 0 then the view will be transformed immediately, and null will
/// be returned. Else a new PTransformActivity will get returned that is set to
/// animate the camera’s view matrix to the new bounds. If shouldScaleToFit is true,
/// then the camera will also scale its view so that the given bounds fit fully within
/// the camera's view bounds, else the camera will maintain its original scale.
/// </remarks>
public virtual PTransformActivity AnimateViewToCenterBounds(RectangleF centerBounds, bool shouldScaleToFit, long duration)
{
SizeF delta = PUtil.DeltaRequiredToCenter(ViewBounds, centerBounds);
PMatrix newMatrix = ViewMatrix;
newMatrix.TranslateBy(delta.Width, delta.Height);
if (shouldScaleToFit)
{
float s = Math.Min(ViewBounds.Width / centerBounds.Width, ViewBounds.Height / centerBounds.Height);
PointF c = PUtil.CenterOfRectangle(centerBounds);
newMatrix.ScaleBy(s, c.X, c.Y);
}
return(AnimateViewToMatrix(newMatrix, duration));
}
/// <summary>
/// Caches the information necessary to animate from the current view bounds to the
/// specified centerBounds
/// </summary>
/// <param name="centerBounds">The bounds to center the view on.</param>
/// <param name="scaleToFit">
/// Indicates whether the camera should scale it's view when necessary to fully fit
/// the given bounds within the camera's view bounds.
/// </param>
/// <returns>The new view matrix to center the specified bounds.</returns>
private Matrix CacheViewBounds(RectangleFx centerBounds, bool scaleToFit)
{
RectangleFx viewBounds = ViewBounds;
// Initialize the image to the union of the current and destination bounds
RectangleFx imageBounds = viewBounds;
imageBounds = RectangleFxtensions.Union(imageBounds, centerBounds);
AnimateViewToCenterBounds(imageBounds, scaleToFit, 0);
imageAnimateBounds = ViewBounds;
// Now create the actual cache image that we will use to animate fast
System.Drawing.Image buffer = PaintBuffer;
Color fBrush = Color.White;
if (Brush != Color.Transparent)
{
fBrush = Brush;
}
ToImage(buffer, fBrush);
// Do this after the painting above!
imageAnimate = true;
// Return the bounds to the previous viewbounds
AnimateViewToCenterBounds(viewBounds, scaleToFit, 0);
// The code below is just copied from animateViewToCenterBounds to create the
// correct transform to center the specified bounds
SizeFx delta = PUtil.DeltaRequiredToCenter(viewBounds, centerBounds);
Matrix newMatrix = ViewMatrix;
newMatrix = MatrixExtensions.TranslateBy(newMatrix, delta.Width, delta.Height);
if (scaleToFit)
{
float s = Math.Min(viewBounds.Width / centerBounds.Width, viewBounds.Height / centerBounds.Height);
PointFx center = PUtil.CenterOfRectangle(centerBounds);
newMatrix = MatrixExtensions.ScaleBy(newMatrix, s, center.X, center.Y);
}
return(newMatrix);
}
//****************************************************************
// Animation - Methods to animate the camera's view.
//****************************************************************
/// <summary>
/// Animate the camera's view from its current matrix when the activity starts
/// to a new matrix that centers the given bounds in the camera layers' coordinate
/// system into the camera's view bounds.
/// </summary>
/// <param name="centerBounds">The bounds to center the view on.</param>
/// <param name="shouldScaleToFit">
/// Indicates whether the camera should scale it's view when necessary to fully fit
/// the given bounds within the camera's view bounds.
/// </param>
/// <param name="duration">The amount of time that the animation should take.</param>
/// <returns>
/// The newly scheduled activity, if the duration is greater than 0; else null.
/// </returns>
/// <remarks>
/// If the duration is 0 then the view will be transformed immediately, and null will
/// be returned. Else a new PTransformActivity will get returned that is set to
/// animate the camera’s view matrix to the new bounds. If shouldScaleToFit is true,
/// then the camera will also scale its view so that the given bounds fit fully within
/// the camera's view bounds, else the camera will maintain its original scale.
/// </remarks>
public virtual PTransformActivity AnimateViewToCenterBounds(RectangleFx centerBounds, bool shouldScaleToFit, long duration)
{
SizeFx delta = PUtil.DeltaRequiredToCenter(ViewBounds, centerBounds);
Matrix newMatrix = ViewMatrix;
newMatrix = MatrixExtensions.TranslateBy(newMatrix, delta.Width, delta.Height);
if (shouldScaleToFit)
{
float s = Math.Min(ViewBounds.Width / centerBounds.Width, ViewBounds.Height / centerBounds.Height);
if (s != float.PositiveInfinity && s != 0)
{
PointFx c = PUtil.CenterOfRectangle(centerBounds);
MatrixExtensions.ScaleBy(newMatrix, s, c.X, c.Y);
}
}
return(AnimateViewToMatrix(newMatrix, duration));
}
protected void CreatePath(Random rnd)
{
PTransformActivity rotActivity;
// Create a path
P3Path path = P3Path.CreateEllipse(0, 0, 100, 100);
path.Brush = Brushes.Red;
path.AddLine(0, 0, 20, 20);
path.AddLine(20, 20, 34, 67);
path.AddArc(0, 30, 30, 30, 30, 30);
path.Tolerance = .002f;
canvas.Layer.AddChild(path);
PMatrix rMatrix = new PMatrix();
PointF center = PUtil.CenterOfRectangle(path.Bounds);
rMatrix.RotateBy(90, center.X, center.Y);
rotActivity = path.AnimateToMatrix(rMatrix, 2000 + (long)(2000 * rnd.NextDouble()));
rotActivity.LoopCount = 1000;
rotActivity.Mode = ActivityMode.SourceToDestinationToSource;
}
public override void OnMouseDown(object sender, PInputEventArgs e)
{
oldP = PUtil.CenterOfRectangle(target.Camera.ViewBounds);
}
