public bool IsHittedBy(HitTestPointData hitData)
{
foreach (var rect in _rectangles)
{
if (hitData.IsHit(rect, _transformation, out var z))
{
return(true);
}
}
return(false);
}
public bool IsHittedBy(HitTestPointData hitData)
{
foreach (var outline in _outlines)
{
if (outline.IsHittedBy(hitData))
{
return(true);
}
}
return(false);
}
public void MoveGrip(HitTestPointData newPosition)
{
foreach (var ele in GripList)
ele.MoveGrip(newPosition);
}
/// <summary>
/// Gets the principal coordinate system that results of the camera facing a layer. The plane of the layer that best faced the camera is used for the calculations.
/// The normal of that layer is returned as z-axis, the vector that best matches the up-vector of the camera is becoming the y-axis,
/// and the x-axis results from the z-axis and the y-axis.
/// </summary>
/// <param name="camera">The camera.</param>
/// <param name="activeLayer">The active layer of the graph document.</param>
/// <param name="transformation">Matrix that contains the principal axes as described above. The axes coordinates are in the coordinates of the layer provided in the argument <paramref name="activeLayer"/>.</param>
/// <exception cref="InvalidProgramException">There should always be a plane of a rectangle that can be hit!</exception>
public static void GetCoordinateSystemBasedOnLayerPlaneFacingTheCamera(CameraBase camera, HostLayer activeLayer, out Matrix3x3 transformation)
{
PointD3D hitposition = new PointD3D(0.5, 0.5, 1); // this hit position is arbitrary, every other position should work similarly
var activeLayerTransformation = activeLayer.TransformationFromRootToHere();
var hitData = new HitTestPointData(camera.GetHitRayMatrix(hitposition));
hitData = hitData.NewFromAdditionalTransformation(activeLayerTransformation); // now hitdata are in layer cos
var targetToEye = hitData.WorldTransformation.Transform(camera.TargetToEyeVectorNormalized); // targetToEye in layer coordinates
var upEye = hitData.WorldTransformation.Transform(camera.UpVectorPerpendicularToEyeVectorNormalized); // camera up vector in layer coordinates
// get the face which has the best dot product between the eye vector of the camera and the plane's normal
var layerRect = new RectangleD3D(PointD3D.Empty, activeLayer.Size);
double maxval = double.MinValue;
PlaneD3D maxPlane = PlaneD3D.Empty;
foreach (var plane in layerRect.Planes)
{
double val = VectorD3D.DotProduct(plane.Normal, targetToEye);
if (val > maxval)
{
maxval = val;
maxPlane = plane;
}
}
// bool isHit = hitData.IsPlaneHitByRay(maxPlane, out hitPointOnPlaneInActiveLayerCoordinates); // hitPointOnPlane is in layer coordinates too
// if (!isHit)
// throw new InvalidProgramException("There should always be a plane of a rectangle that can be hit!");
VectorD3D zaxis = maxPlane.Normal;
VectorD3D yaxis = upEye;
// Find y axis perpendicular to zaxis
maxval = double.MinValue;
foreach (var plane in layerRect.Planes)
{
double val = VectorD3D.DotProduct(plane.Normal, upEye);
if (val > maxval && 0 == VectorD3D.DotProduct(plane.Normal, zaxis))
{
maxval = val;
yaxis = plane.Normal;
}
}
var xaxis = VectorD3D.CrossProduct(yaxis, zaxis);
// now we have all information about the spatial position and orientation of the text:
// hitPointOnPlane is the position of the text
// maxPlane.Normal is the face orientation of the text
// maxUpVector is the up orientation of the text
xaxis = xaxis.Normalized;
yaxis = yaxis.Normalized;
zaxis = zaxis.Normalized;
transformation = new Matrix3x3(
xaxis.X, yaxis.X, zaxis.X,
xaxis.Y, yaxis.Y, zaxis.Y,
xaxis.Z, yaxis.Z, zaxis.Z
);
}
/// <summary>
/// Handles the mouse move event.
/// </summary>
/// <param name="position">Mouse position.</param>
/// <param name="e">MouseEventArgs as provided by the view.</param>
/// <returns>The next mouse state handler that should handle mouse events.</returns>
public override void OnMouseMove(PointD3D position, MouseEventArgs e)
{
base.OnMouseMove(position, e);
if (null != ActiveGrip)
{
var graphCoord = new HitTestPointData(_grac.Doc.Camera.GetHitRayMatrix(position));
ActiveGrip.MoveGrip(graphCoord);
_wereObjectsMoved = true;
_grac.RenderOverlay();
}
/*
else if (e.LeftButton == MouseButtonState.Pressed)
{
var diffPos = position - _positionLastMouseDownInMouseCoordinates;
var oldRect = _rectangleSelectionArea_GraphCoordinates;
if (null != _rectangleSelectionArea_GraphCoordinates ||
Math.Abs(diffPos.X) >= System.Windows.SystemParameters.MinimumHorizontalDragDistance ||
Math.Abs(diffPos.Y) >= System.Windows.SystemParameters.MinimumHorizontalDragDistance)
{
if (null == _rectangleSelectionArea_GraphCoordinates)
{
_grac.CaptureMouse();
}
var pt1 = _grac.ConvertMouseToRootLayerCoordinates(_positionLastMouseDownInMouseCoordinates);
var rect = new RectangleD2D(pt1, PointD2D.Empty);
rect.ExpandToInclude(_grac.ConvertMouseToRootLayerCoordinates(position));
_rectangleSelectionArea_GraphCoordinates = rect;
}
if (null != _rectangleSelectionArea_GraphCoordinates)
_grac.RenderOverlay();
}
*/
}
/// <summary>
/// Tests if a grip from the <see cref="DisplayedGrips"/> is hitted.
/// </summary>
/// <param name="pt">Mouse location.</param>
/// <returns>The grip which was hitted, or null if no grip was hitted.</returns>
public IGripManipulationHandle GripHitTest(HitTestPointData pt)
{
if (null == DisplayedGrips || DisplayedGrips.Length == 0)
return null;
for (int i = 0; i < DisplayedGrips.Length; i++)
{
if (DisplayedGrips[i].IsGripHit(pt))
return DisplayedGrips[i];
}
return null;
}
public bool IsHittedBy(HitTestPointData hitData)
{
foreach (var outline in _outlines)
if (outline.IsHittedBy(hitData))
return true;
return false;
}
public bool GetHittedElement(HitTestPointData point, out IGripManipulationHandle gripHandle, out IHitTestObject hitObject)
{
for (int i = GripList.Count - 1; i >= 0; i--)
{
if (GripList[i].IsGripHit(point))
{
gripHandle = GripList[i];
hitObject = HittedList[i];
return true;
}
}
gripHandle = null;
hitObject = null;
return false;
}
public bool IsGripHit(HitTestPointData point)
{
return(false);
}
public bool IsHittedBy(HitTestPointData hitData)
{
double z;
return hitData.IsHit(_rectangle, _transformation, out z);
}
public void MoveGrip(HitTestPointData newPosition)
{
}
/// <summary>
/// Activates this grip, providing the initial position of the mouse.
/// </summary>
/// <param name="initialPosition">Initial position of the mouse.</param>
/// <param name="isActivatedUponCreation">If true the activation is called right after creation of this handle. If false,
/// thie activation is due to a regular mouse click in this grip.</param>
public void Activate(HitTestPointData initialPosition, bool isActivatedUponCreation)
{
}
/// <summary>
/// Looks for a graph object at the position given by <paramref name="hitData"/> and returns true if one is found.
/// </summary>
/// <param name="hitData">The position of the mouse, expressed as transformation, that when applied, transformes the mouse coordinate to the point x=0, y=0, z=-Infinity....+Infinity.</param>
/// <param name="plotItemsOnly">If true, only the plot items where hit tested.</param>
/// <param name="foundObject">Found object if there is one found, else null</param>
/// <param name="foundInLayerNumber">The layer the found object belongs to, otherwise 0</param>
/// <returns>True if a object was found at the position given by <paramref name="hitData"/>, else false.</returns>
public bool FindGraphObjectAtPixelPosition(HitTestPointData hitData, bool plotItemsOnly, out IHitTestObject foundObject, out int[] foundInLayerNumber)
{
foundObject = Doc.RootLayer.HitTest(hitData, plotItemsOnly);
if (null != foundObject && null != foundObject.ParentLayer)
{
foundInLayerNumber = foundObject.ParentLayer.IndexOf().ToArray();
return true;
}
foundObject = null;
foundInLayerNumber = null;
return false;
}
public bool IsHittedBy(HitTestPointData hitData)
{
throw new NotImplementedException();
}
public bool IsHittedBy(HitTestPointData hitData)
{
double z;
foreach (var rect in _rectangles)
{
if (hitData.IsHit(rect, _transformation, out z))
return true;
}
return false;
}
public bool IsGripHit(HitTestPointData point)
{
foreach (var ele in GripList)
if (ele.IsGripHit(point))
return true;
return false;
}
public bool IsHittedBy(HitTestPointData hitData)
{
throw new NotImplementedException();
}
public override void OnMouseDown(PointD3D position, MouseButtonEventArgs e)
{
base.OnMouseDown(position, e);
if (e.ChangedButton == MouseButton.Left)
{
var hitData = new HitTestPointData(_grac.Doc.Camera.GetHitRayMatrix(position));
// first, if we have a mousedown without shift key and the
// position has changed with respect to the last mousedown
// we have to deselect all objects
var keyboardModifiers = System.Windows.Input.Keyboard.Modifiers;
bool bControlKey = keyboardModifiers.HasFlag(ModifierKeys.Control);
bool bShiftKey = keyboardModifiers.HasFlag(ModifierKeys.Shift);
ActiveGrip = GripHitTest(hitData);
if ((ActiveGrip is SuperGrip) && (bShiftKey || bControlKey))
{
var superGrip = ActiveGrip as SuperGrip;
IHitTestObject hitTestObj;
IGripManipulationHandle gripHandle;
if (superGrip.GetHittedElement(hitData, out gripHandle, out hitTestObj))
{
_selectedObjects.Remove(hitTestObj);
superGrip.Remove(gripHandle);
return;
}
}
else if (ActiveGrip != null)
{
ActiveGrip.Activate(hitData, false);
return;
}
// search for a object first
IHitTestObject clickedObject;
int[] clickedLayerNumber = null;
_grac.FindGraphObjectAtPixelPosition(hitData, false, out clickedObject, out clickedLayerNumber);
if (!bShiftKey && !bControlKey) // if shift or control are pressed, we add the object to the selection list and start moving mode
ClearSelections();
if (null != clickedObject)
AddSelectedObject(hitData, clickedObject);
}
}
/// <summary>
/// Copy constructor.
/// </summary>
/// <param name="from">Another HitTestData object to copy from.</param>
public HitTestPointData(HitTestPointData from)
{
this._hitTransformation = from._hitTransformation;
this._worldTransformation = from._worldTransformation;
}
private void AddSelectedObject(HitTestPointData hitPoint, IHitTestObject clickedObject)
{
_selectedObjects.Add(clickedObject);
DisplayedGripLevel = 1;
DisplayedGrips = GetGripsFromSelectedObjects();
if (_selectedObjects.Count == 1) // single object selected
{
ActiveGrip = GripHitTest(hitPoint);
if (ActiveGrip != null)
ActiveGrip.Activate(hitPoint, true);
}
else // multiple objects selected
{
ActiveGrip = DisplayedGrips[0]; // this is our SuperGrip
DisplayedGrips[0].Activate(hitPoint, true);
}
_grac.RenderOverlay();
}
/// <summary>
/// Gets the hit point on that plane of the active layer rectangle, that is facing the camera.
/// </summary>
/// <param name="doc">The graph document containing the active layer.</param>
/// <param name="activeLayer">The active layer of the graph document.</param>
/// <param name="hitposition">Hit point in relative screen coordinates. The z-component is the aspect ratio of the screen (y/x).</param>
/// <param name="hitPointOnPlaneInActiveLayerCoordinates">Output: The hit point on the plane of the active layer that faces the camera. The hit point is returned in active layer coordinates.</param>
/// <param name="rotationsRadian">The rotation angles that can be used e.g. to orient text so that the text is most readable from the current camera setting. Rotation angle around x is the x-component of the returned vector, and so on.</param>
/// <exception cref="InvalidProgramException">There should always be a plane of a rectangle that can be hit!</exception>
public static void GetHitPointOnActiveLayerPlaneFacingTheCamera(GraphDocument doc, HostLayer activeLayer, PointD3D hitposition, out PointD3D hitPointOnPlaneInActiveLayerCoordinates, out VectorD3D rotationsRadian)
{
var activeLayerTransformation = activeLayer.TransformationFromRootToHere();
var camera = doc.Camera;
var hitData = new HitTestPointData(camera.GetHitRayMatrix(hitposition));
hitData = hitData.NewFromAdditionalTransformation(activeLayerTransformation); // now hitdata are in layer cos
var targetToEye = hitData.WorldTransformation.Transform(camera.TargetToEyeVectorNormalized); // targetToEye in layer coordinates
var upEye = hitData.WorldTransformation.Transform(camera.UpVectorPerpendicularToEyeVectorNormalized); // camera up vector in layer coordinates
// get the face which has the best dot product between the eye vector of the camera and the plane's normal
var layerRect = new RectangleD3D(PointD3D.Empty, activeLayer.Size);
double maxval = double.MinValue;
PlaneD3D maxPlane = PlaneD3D.Empty;
foreach (var plane in layerRect.Planes)
{
double val = VectorD3D.DotProduct(plane.Normal, targetToEye);
if (val > maxval)
{
maxval = val;
maxPlane = plane;
}
}
bool isHit = hitData.IsPlaneHitByRay(maxPlane, out hitPointOnPlaneInActiveLayerCoordinates); // hitPointOnPlane is in layer coordinates too
if (!isHit)
throw new InvalidProgramException("There should always be a plane of a rectangle that can be hit!");
VectorD3D zaxis = maxPlane.Normal;
VectorD3D yaxis = upEye;
// Find y axis perpendicular to zaxis
maxval = double.MinValue;
foreach (var plane in layerRect.Planes)
{
double val = VectorD3D.DotProduct(plane.Normal, upEye);
if (val > maxval && 0 == VectorD3D.DotProduct(plane.Normal, zaxis))
{
maxval = val;
yaxis = plane.Normal;
}
}
var xaxis = VectorD3D.CrossProduct(yaxis, zaxis);
// now we have all information about the spatial position and orientation of the text:
// hitPointOnPlane is the position of the text
// maxPlane.Normal is the face orientation of the text
// maxUpVector is the up orientation of the text
double cx, sx, cy, sy, cz, sz;
sy = xaxis.Z;
if (1 != Math.Abs(sy))
{
cy = Math.Sqrt(1 - sy * sy);
cz = xaxis.X / cy;
sz = xaxis.Y / cy;
sx = yaxis.Z / cy;
cx = zaxis.Z / cy;
}
else // sy is +1, thus cy is zero
{
// we set x-rotation to zero, i.e. cx==1 and sx==0
cy = 0;
cx = 1;
sx = 0;
cz = yaxis.Y;
sz = -yaxis.X;
}
rotationsRadian = new VectorD3D(Math.Atan2(sx, cx), Math.Atan2(sy, cy), Math.Atan2(sz, cz));
}
/// <summary>
/// Activates this grip, providing the initial position of the mouse.
/// </summary>
/// <param name="initialPosition">Initial position of the mouse.</param>
/// <param name="isActivatedUponCreation">If true the activation is called right after creation of this handle. If false,
/// thie activation is due to a regular mouse click in this grip.</param>
public void Activate(HitTestPointData initialPosition, bool isActivatedUponCreation)
{
foreach (var ele in GripList)
ele.Activate(initialPosition, isActivatedUponCreation);
}
public bool IsHittedBy(HitTestPointData hitData)
{
return(hitData.IsHit(_rectangle, _transformation, out var z));
}
/// <summary>
/// Copy constructor.
/// </summary>
/// <param name="from">Another HitTestData object to copy from.</param>
public HitTestPointData(HitTestPointData from)
{
_hitTransformation = from._hitTransformation;
_worldTransformation = from._worldTransformation;
}
protected override IHitTestObject HitTestWithLocalCoordinates(HitTestPointData localCoord, bool plotItemsOnly)
{
IHitTestObject hit = null;
if (!plotItemsOnly)
{
hit = _axisStyles.HitTest(localCoord, AxisScaleEditorMethod, AxisStyleEditorMethod, AxisLabelMajorStyleEditorMethod, AxisLabelMinorStyleEditorMethod);
}
if (null == hit)
{
hit = base.HitTestWithLocalCoordinates(localCoord, plotItemsOnly);
}
if (null != hit && hit.ParentLayer == null)
hit.ParentLayer = this;
return hit;
}
