private void AddContours(Visual3D model1, int o, int m, int n)
{
var bounds = Visual3DHelper.FindBounds(model1, Transform3D.Identity);
for (int i = 1; i < n; i++)
{
this.ContourPlane = new Plane3D(new Point3D(0, 0, bounds.Location.Z + bounds.Size.Z * i / n), new Vector3D(0, 0, 1));
Visual3DHelper.Traverse<GeometryModel3D>(model1, this.AddContours);
}
for (int i = 1; i < m; i++)
{
this.ContourPlane = new Plane3D(new Point3D(0, bounds.Location.Y + bounds.Size.Y * i / m, 0), new Vector3D(0, 1, 0));
Visual3DHelper.Traverse<GeometryModel3D>(model1, this.AddContours);
}
for (int i = 1; i < o; i++)
{
this.ContourPlane = new Plane3D(new Point3D(bounds.Location.X + bounds.Size.X * i / o, 0, 0), new Vector3D(1, 0, 0));
Visual3DHelper.Traverse<GeometryModel3D>(model1, this.AddContours);
}
}
public ManipulatorControl(ManipulatorType type, Visual3D visual)
{
targetVisual = visual;
Type = type;
Transform = targetVisual.Transform;
Diameter = 0.5;
double l = 5;
switch (type)
{
case ManipulatorType.TranslateX:
Normal = new Vector3D(0, 0, 1);
Direction = new Vector3D(l, 0, 0);
Fill = Brushes.Red;
break;
case ManipulatorType.TranslateY:
Normal = new Vector3D(0, 0, 1);
Direction = new Vector3D(0, l, 0);
Fill = Brushes.Green;
break;
case ManipulatorType.TranslateZ:
Normal = new Vector3D(0, 1, 0);
Direction = new Vector3D(0, 0, l);
Fill = Brushes.Blue;
break;
}
}
public BlipVisual(Visual3D visual, bool isVisualUpright, TranslateTransform3D translate, AxisAngleRotation3D rotate)
{
this.Visual = visual;
this.IsVisualUpright = isVisualUpright;
this.Translate = translate;
this.Rotate = rotate;
}
public void Export(Visual3D visual)
{
object obj = visual;
if (CreateResourceDictionary)
obj = WrapInResourceDictionary(obj);
XamlWriter.Save(obj, xw);
}
public static void RemoveChild(DependencyObject parent, Visual3D v3d)
{
var parentAsModelVisual3D = parent as ModelVisual3D;
if (parentAsModelVisual3D != null)
{
parentAsModelVisual3D.Children.Remove(v3d);
}
}
public Visual3DClickedEventArgs(Visual3D visual, MouseButtonState left, MouseButtonState right, bool hasMoved, Point position)
{
_Visual = visual;
_LeftButton = left;
_RightButton = right;
_HasMoved = hasMoved;
_MousePosition = position;
}
public Point3D? HitTest(Visual3D reference, Point3D point, Vector3D direction)
{
if (reference != null)
{
var hitParams = new RayHitTestParameters(point, direction);
hit = false;
VisualTreeHelper.HitTest(reference, null, HitTestCallback, hitParams);
if (hit)
{
return hitTestValue;
}
}
return null;
}
/// <summary>
/// Determines whether the specified visual is transparent.
/// </summary>
/// <param name="v">The v.</param>
/// <returns>
/// <c>true</c> if the specified visual is transparent; otherwise, <c>false</c>.
/// </returns>
public static bool IsTransparent(Visual3D v)
{
var mv3D = v as ModelVisual3D;
if (mv3D != null)
{
// check if Model3D is transparent
if (IsTransparent(mv3D.Content))
return true;
// check if any child Visual3D are transparent
return mv3D.Children.Any(IsTransparent);
}
return false;
}
/// <summary>
/// Create a clone of a Visual3D
/// </summary>
/// <param name="v">
/// a Visual3D
/// </param>
/// <returns>
/// the clone
/// </returns>
public static Visual3D CreateClone(Visual3D v)
{
if (v is ModelUIElement3D)
{
var m = v as ModelUIElement3D;
if (m.Model != null)
{
/*if (m.Model.CanFreeze)
m.Model.Freeze();
if (m.Model.IsFrozen)*/
{
var clonedModel = m.Model.Clone();
var clonedElement = new ModelUIElement3D();
clonedElement.Transform = m.Transform;
clonedElement.Model = clonedModel;
return clonedElement;
}
}
}
if (v is ModelVisual3D)
{
var m = v as ModelVisual3D;
var clone = new ModelVisual3D();
clone.Transform = m.Transform;
if (m.Content != null && m.Content.CanFreeze)
{
m.Content.Freeze();
var clonedModel = m.Content.Clone();
clone.Content = clonedModel;
}
if (m.Children.Count > 0)
{
foreach (var child in m.Children)
{
var clonedChild = CreateClone(child);
clone.Children.Add(clonedChild);
}
}
return clone;
}
return null;
}
//------------------------------------------------------
//
// Constructors
//
//------------------------------------------------------
#region Constructors
internal RayMeshGeometry3DHitTestResult(
Visual3D visualHit,
Model3D modelHit,
MeshGeometry3D meshHit,
Point3D pointHit,
double distanceToRayOrigin,
int vertexIndex1,
int vertexIndex2,
int vertexIndex3,
Point barycentricCoordinate) : base (visualHit, modelHit)
{
_meshHit = meshHit;
_pointHit = pointHit;
_distanceToRayOrigin = distanceToRayOrigin;
_vertexIndex1 = vertexIndex1;
_vertexIndex2 = vertexIndex2;
_vertexIndex3 = vertexIndex3;
_barycentricCoordinate = barycentricCoordinate;
}
/// <summary>
/// Notifies the element that you have removed a child. The Element
/// will update the parent pointer, fire the correct events, etc.
/// </summary>
void IVisual3DContainer.RemoveChild(Visual3D child)
{
RemoveVisual3DChild(child);
}
/// <summary>
/// Notifies the element that you have added a child. The Element
/// will update the parent pointer, fire the correct events, etc.
/// </summary>
void IVisual3DContainer.AddChild(Visual3D child)
{
AddVisual3DChild(child);
}
public GeneralTransform3D TransformToAncestor(Visual3D ancestor)
{
Contract.Requires(ancestor != null);
return(default(GeneralTransform3D));
}
/// <summary>
/// Computes the transformation matrix to go from a 3D point in the given Visual3D's coordinate space out in to
/// the Viewport3DVisual.
/// </summary>
internal static bool TryTransformToViewport3DVisual(Visual3D visual3D, out Viewport3DVisual viewport, out Matrix3D matrix)
{
matrix = GetWorldTransformationMatrix(visual3D, out viewport);
if (viewport != null)
{
matrix *= GetWorldToViewportTransform3D(viewport.Camera, viewport.Viewport);
return true;
}
else
{
return false;
}
}
/// <summary>
/// Gets the object space to world space transformation for the given Visual3D
/// </summary>
/// <param name="visual">The visual whose world space transform should be found</param>
/// <returns>The world space transformation</returns>
internal static Matrix3D GetWorldTransformationMatrix(Visual3D visual)
{
Viewport3DVisual ignored;
return GetWorldTransformationMatrix(visual, out ignored);
}
/// <summary>
/// Returns the transform or the inverse transform between this visual and the specified ancestor.
/// If inverse is requested but does not exist (if the transform is not invertible), null is returned.
/// </summary>
/// <param name="ancestor">Ancestor visual.</param>
/// <param name="inverse">Returns inverse if this argument is true.</param>
private GeneralTransform3D InternalTransformToAncestor(Visual3D ancestor, bool inverse)
{
Debug.Assert(ancestor != null);
// used to track if all the collected transforms on the way to the ancestor were valid
bool success = true;
DependencyObject g = this;
Visual3D lastVisual3D = null;
Matrix3D m = Matrix3D.Identity;
GeneralTransform3DGroup group = null;
// This while loop will walk up the visual tree until we encounter the ancestor.
// As it does so, it will accumulate the descendent->ancestor transform.
// In most cases, this is simply a matrix, though if we encounter a 2D node we need to
// transform from 3D out in to 2D and then back in to 3D and continue the parent walk.
// We will accumulate the current transform in a matrix until we encounter a 2D parent,
// at which point we will add the matrix's current value and the transform from 3D to 2D to 3D
// to the GeneralTransform3DGroup and continue to accumulate further transforms in the matrix again.
// At the end of this loop, we will have 0 or more transforms in the GeneralTransform3DGroup
// and the matrix which, if not identity, should be appended to the GeneralTransform3DGroup.
// If, as is commonly the case, this loop terminates without encountering a 2D parent
// we will simply use the Matrix3D.
while ((VisualTreeHelper.GetParent(g) != null) && (g != ancestor))
{
Visual3D gAsVisual3D = g as Visual3D;
if (gAsVisual3D != null)
{
Transform3D transform = gAsVisual3D.Transform;
if (transform != null)
{
transform.Append(ref m);
}
lastVisual3D = gAsVisual3D;
g = VisualTreeHelper.GetParent(gAsVisual3D);
}
else
{
if (group == null)
{
group = new GeneralTransform3DGroup();
}
group.Children.Add(new MatrixTransform3D(m));
m = Matrix3D.Identity;
// construct the 3D to 2D to 3D transform
Visual gAsVisual = g as Visual;
GeneralTransform3DTo2D transform3DTo2D = lastVisual3D.TransformToAncestor(gAsVisual);
// now find the 3D parent of the 2D object
Visual3D containing3DParent = VisualTreeHelper.GetContainingVisual3D(gAsVisual);
// if containing3DParent is null, then the ancestor parameter is not really an ancestor
// break out of the loop to allow it to fail
if (containing3DParent == null)
{
break;
}
GeneralTransform2DTo3D transform2DTo3D = gAsVisual.TransformToAncestor(containing3DParent);
// if either transform ends up being null then we don't have a transform
if (transform3DTo2D == null || transform2DTo3D == null)
{
// we don't want to break here because although we own't be able to create a valid transformation
// we also want to throw an exception if the ancestor passed in is not a valid ancestor. We then
// continue the tree walk to make sure.
success = false;
}
else
{
group.Children.Add(new GeneralTransform3DTo2DTo3D(transform3DTo2D, transform2DTo3D));
}
// the last visual3D found is where we continue the search
g = containing3DParent;
}
}
if (g != ancestor)
{
throw new System.InvalidOperationException(SR.Get(inverse ? SRID.Visual_NotADescendant : SRID.Visual_NotAnAncestor));
}
// construct the generaltransform3d to return and invert it if necessary
GeneralTransform3D finalTransform = null;
// if we successfully found a transform then we can create it here, otherwise finalTransform stays null
if (success)
{
if (group != null)
{
finalTransform = group;
}
else
{
finalTransform = new MatrixTransform3D(m);
}
if (inverse)
{
finalTransform = finalTransform.Inverse;
}
}
if (finalTransform != null)
{
finalTransform.Freeze();
}
return finalTransform;
}
/// <summary>
/// Gets the distance squared.
/// </summary>
/// <param name="position">
/// The position.
/// </param>
/// <param name="visual">
/// The visual.
/// </param>
/// <returns>
/// The get distance squared.
/// </returns>
public static double GetDistanceSquared(Point3D position, Visual3D visual)
{
var bounds = Visual3DHelper.FindBounds(visual, Transform3D.Identity);
return Point3D.Subtract(bounds.Location, position).LengthSquared;
}
/// <summary>
/// DisconnectChild
///
/// Derived classes must call this method to notify the Visual3D layer that a
/// child was removed from the children collection. The Visual3D layer will then call
/// GetVisual3DChild to find out which child has been removed.
///
/// </summary>
protected void RemoveVisual3DChild(Visual3D child)
{
// It is invalid to modify the children collection that we
// might be iterating during a property invalidation tree walk.
if (IsVisualChildrenIterationInProgress)
{
throw new InvalidOperationException(SR.Get(SRID.CannotModifyVisualChildrenDuringTreeWalk));
}
Debug.Assert(child != null);
Debug.Assert(child.InternalVisualParent == this);
child.SetParent(/* newParent = */ (Visual3D) null); // CS0121: Call is ambigious without casting null to Visual3D.
// remove the inheritance context
RemoveSelfAsInheritanceContext(child, null);
//
// Remove the child on all the channels
// this visual is being marshalled to.
//
for (int i = 0, limit = _proxy.Count; i < limit; i++)
{
DUCE.Channel channel = _proxy.GetChannel(i);
if (child.CheckFlagsAnd(channel, VisualProxyFlags.IsConnectedToParent))
{
child.SetFlags(channel, false, VisualProxyFlags.IsConnectedToParent);
DUCE.IResource childResource = (DUCE.IResource)child;
childResource.RemoveChildFromParent(this, channel);
childResource.ReleaseOnChannel(channel);
}
}
//
// Force a full precompute and render pass for this visual.
//
Visual3D.PropagateFlags(
this,
VisualFlags.IsSubtreeDirtyForPrecompute,
VisualProxyFlags.IsSubtreeDirtyForRender);
//
// Fire notifications
child.FireOnVisualParentChanged(this);
OnVisualChildrenChanged(/* visualAdded = */ null , child);
}
/// <summary>
/// Propagates the flags up to the root.
/// </summary>
/// <remarks>
/// The walk stops on a node with all of the required flags set.
/// </remarks>
internal static void PropagateFlags(
Visual3D e,
VisualFlags flags,
VisualProxyFlags proxyFlags)
{
while ((e != null) &&
(!e.CheckFlagsAnd(flags) || !e.CheckFlagsOnAllChannels(proxyFlags)))
{
// These asserts are mostly for documentation when diffing the 2D/3D
// implementations.
Debug.Assert(!e.CheckFlagsOr(VisualFlags.ShouldPostRender),
"Visual3Ds should never be the root of a tree.");
Debug.Assert(!e.CheckFlagsOr(VisualFlags.NodeIsCyclicBrushRoot),
"Visual3Ds should never be the root of an ICyclicBrush.");
e.SetFlags(true, flags);
e.SetFlagsOnAllChannels(true, proxyFlags);
// If our 3D parent is null call back into VisualTreeUtils to potentially
// continue the walk in 2D.
if (e._3DParent == null)
{
Viewport3DVisual viewport = e.InternalVisualParent as Viewport3DVisual;
Debug.Assert((viewport == null) == (e.InternalVisualParent == null),
"Viewport3DVisual is the only supported 2D parent of a 3D visual.");
if(viewport != null)
{
// We must notify the 2D visual that its contents have changed.
// This will cause the 2D visual to set it's content dirty flag
// and continue the propagation of IsDirtyForRender/Precompute.
viewport.Visual3DTreeChanged();
// continue propagating flags up the 2D world
Visual.PropagateFlags(viewport, flags, proxyFlags);
}
// Stop propagating. We are at the root of the 3D subtree.
return;
}
e = e._3DParent;
}
}
public GeneralTransform3D TransformToDescendant(Visual3D descendant)
{
Contract.Requires(descendant != null);
return(default(GeneralTransform3D));
}
internal override void RenderContent(RenderContext ctx, bool isOnChannel)
{
DUCE.Channel channel = ctx.Channel;
//
// At this point, the visual has to be marshalled. Force
// marshalling of the camera and viewport in case we have
// just created a new visual resource.
//
Debug.Assert(IsOnChannel(channel));
VisualProxyFlags flags = _proxy.GetFlags(channel);
//
// Make sure the camera resource is being marshalled properly.
//
if ((flags & VisualProxyFlags.Viewport3DVisual_IsCameraDirty) != 0)
{
Camera camera = Camera;
if (camera != null)
{
DUCE.Viewport3DVisualNode.SetCamera(
((DUCE.IResource) this).GetHandle(channel),
((DUCE.IResource)camera).AddRefOnChannel(channel),
channel);
}
else if (isOnChannel) /* camera == null */
{
DUCE.Viewport3DVisualNode.SetCamera(
((DUCE.IResource) this).GetHandle(channel),
DUCE.ResourceHandle.Null,
channel);
}
SetFlags(channel, false, VisualProxyFlags.Viewport3DVisual_IsCameraDirty);
}
//
// Set the viewport if it's dirty.
//
if ((flags & VisualProxyFlags.Viewport3DVisual_IsViewportDirty) != 0)
{
DUCE.Viewport3DVisualNode.SetViewport(
((DUCE.IResource) this).GetHandle(channel),
Viewport,
channel);
SetFlags(channel, false, VisualProxyFlags.Viewport3DVisual_IsViewportDirty);
}
//we only want to recurse in the children if the visual does not have a bitmap effect
//or we are in the BitmapVisualManager render pass
// Visit children of this node -----------------------------------------------------------------------
Debug.Assert(!CheckFlagsAnd(channel, VisualProxyFlags.IsContentNodeConnected),
"Only HostVisuals are expected to have a content node.");
if (_children != null)
{
for (uint i = 0; i < _children.InternalCount; i++)
{
Visual3D child = _children.InternalGetItem((int)i);
if (child != null)
{
if (child.CheckFlagsAnd(channel, VisualProxyFlags.IsSubtreeDirtyForRender) || // or the visual is dirty
!(child.IsOnChannel(channel))) // or the child has not been marshalled yet.
{
child.RenderRecursive(ctx);
}
if (child.IsOnChannel(channel))
{
if (!child.CheckFlagsAnd(channel, VisualProxyFlags.IsConnectedToParent))
{
DUCE.Visual3DNode.InsertChildAt(
_proxy3D.GetHandle(channel),
((DUCE.IResource)child).GetHandle(channel),
/* iPosition = */ i,
channel);
child.SetFlags(channel, true, VisualProxyFlags.IsConnectedToParent);
}
}
}
}
}
}
// NOTE: The code here is highly similar to RemoveChildCore in ModelVisual3D,
// but slightly different because the parent is 2D here.
void IVisual3DContainer.RemoveChild(Visual3D child)
{
int index = child.ParentIndex;
// It is invalid to modify the children collection that we
// might be iterating during a property invalidation tree walk.
if (IsVisualChildrenIterationInProgress)
{
throw new InvalidOperationException(SR.Get(SRID.CannotModifyVisualChildrenDuringTreeWalk));
}
// invalid during a VisualTreeChanged event
VisualDiagnostics.VerifyVisualTreeChange(this);
Debug.Assert(child != null);
Debug.Assert(child.InternalVisualParent == this);
VisualDiagnostics.OnVisualChildChanged(this, child, false);
child.SetParent(/* newParent = */ (Visual)null); // CS0121: Call is ambigious without casting null to Visual.
// remove the inheritance context
if (_inheritanceContextForChildren != null)
{
_inheritanceContextForChildren.RemoveSelfAsInheritanceContext(child, null);
}
//
// Remove the child on all channels this visual is marshalled to.
//
for (int i = 0, limit = _proxy3D.Count; i < limit; i++)
{
DUCE.Channel channel = _proxy3D.GetChannel(i);
if (child.CheckFlagsAnd(channel, VisualProxyFlags.IsConnectedToParent))
{
child.SetFlags(channel, false, VisualProxyFlags.IsConnectedToParent);
DUCE.IResource childResource = (DUCE.IResource)child;
childResource.RemoveChildFromParent(this, channel);
childResource.ReleaseOnChannel(channel);
}
}
SetFlagsOnAllChannels(true, VisualProxyFlags.IsContentDirty);
//
// Force a full precompute and render pass for this visual.
//
Visual.PropagateFlags(
this,
VisualFlags.IsSubtreeDirtyForPrecompute,
VisualProxyFlags.IsSubtreeDirtyForRender);
//
child.FireOnVisualParentChanged(this);
OnVisualChildrenChanged(/* visualAdded = */ null, child);
}
// --------------------------------------------------------------------
//
// Visual-to-Visual Transforms
//
// --------------------------------------------------------------------
#region Visual-to-Visual Transforms
/// <summary>
/// Returns a transform that can be used to transform coordinates from this
/// node to the specified ancestor, or null if the transformation cannot be created.
/// 2D is allowed to be between the 3D nodes.
/// </summary>
/// <exception cref="ArgumentNullException">
/// If ancestor is null.
/// </exception>
/// <exception cref="ArgumentException">
/// If the ancestor Visual3D is not a ancestor of Visual3D.
/// </exception>
/// <exception cref="InvalidOperationException">If the Visual3Ds are not connected.</exception>
public GeneralTransform3D TransformToAncestor(Visual3D ancestor)
{
if (ancestor == null)
{
throw new ArgumentNullException("ancestor");
}
VerifyAPIReadOnly(ancestor);
return InternalTransformToAncestor(ancestor, false);
}
/// <summary>
/// Gets the distance from the camera for the specified visual.
/// </summary>
/// <param name="c">
/// The visual.
/// </param>
/// <param name="cameraPos">
/// The camera position.
/// </param>
/// <param name="transform">
/// The total transform of the visual.
/// </param>
/// <returns>
/// The camera distance.
/// </returns>
private double GetCameraDistance(Visual3D c, Point3D cameraPos, Transform3D transform)
{
var bounds = Visual3DHelper.FindBounds(c, transform);
switch (this.Method)
{
case SortingMethod.BoundingBoxCenter:
var mid = new Point3D(
bounds.X + bounds.SizeX * 0.5, bounds.Y + bounds.SizeY * 0.5, bounds.Z + bounds.SizeZ * 0.5);
return (mid - cameraPos).LengthSquared;
case SortingMethod.BoundingBoxCorners:
double d = double.MaxValue;
d = Math.Min(d, cameraPos.DistanceTo(new Point3D(bounds.X, bounds.Y, bounds.Z)));
d = Math.Min(d, cameraPos.DistanceTo(new Point3D(bounds.X + bounds.SizeX, bounds.Y, bounds.Z)));
d = Math.Min(
d, cameraPos.DistanceTo(new Point3D(bounds.X + bounds.SizeX, bounds.Y + bounds.SizeY, bounds.Z)));
d = Math.Min(d, cameraPos.DistanceTo(new Point3D(bounds.X, bounds.Y + bounds.SizeY, bounds.Z)));
d = Math.Min(d, cameraPos.DistanceTo(new Point3D(bounds.X, bounds.Y, bounds.Z + bounds.SizeZ)));
d = Math.Min(
d, cameraPos.DistanceTo(new Point3D(bounds.X + bounds.SizeX, bounds.Y, bounds.Z + bounds.SizeZ)));
d = Math.Min(
d,
cameraPos.DistanceTo(
new Point3D(bounds.X + bounds.SizeX, bounds.Y + bounds.SizeY, bounds.Z + bounds.SizeZ)));
d = Math.Min(
d, cameraPos.DistanceTo(new Point3D(bounds.X, bounds.Y + bounds.SizeY, bounds.Z + bounds.SizeZ)));
return d;
default:
var boundingSphere = BoundingSphere.CreateFromRect3D(bounds);
return boundingSphere.DistanceFrom(cameraPos);
}
}
/// <summary>
/// Returns a transform that can be used to transform coordinates from this
/// node to the specified descendant, or null if the transform from descendant to "this"
/// is non-invertible. This is the case when 2D is between the nodes.
///
/// </summary>
/// <exception cref="ArgumentException">
/// If the reference Visual3D is not a ancestor of the descendant Visual3D.
/// </exception>
/// <exception cref="ArgumentNullException">If the descendant argument is null.</exception>
/// <exception cref="InvalidOperationException">If the Visual3Ds are not connected.</exception>
public GeneralTransform3D TransformToDescendant(Visual3D descendant)
{
if (descendant == null)
{
throw new ArgumentNullException("descendant");
}
VerifyAPIReadOnly(descendant);
return descendant.InternalTransformToAncestor(this, true);
}
/// <summary>
/// Initializes a new instance of the <see cref="BillboardGeometryBuilder"/> class.
/// </summary>
/// <param name="visual">
/// The visual.
/// </param>
public BillboardGeometryBuilder(Visual3D visual)
: base(visual)
{
}
/// <summary>
/// Check all the children for a bit.
/// </summary>
internal static bool DoAnyChildrenHaveABitSet(Visual3D pe,
VisualFlags flag)
{
int count = pe.InternalVisual2DOr3DChildrenCount;
for (int i = 0; i < count; i++)
{
DependencyObject child = pe.InternalGet2DOr3DVisualChild(i);
Visual v = null;
Visual3D v3D = null;
VisualTreeUtils.AsNonNullVisual(child, out v, out v3D);
if (v != null && v.CheckFlagsAnd(flag))
{
return true;
}
else if (v3D != null && v3D.CheckFlagsAnd(flag))
{
return true;
}
}
return false;
}
//------------------------------------------------------
//
// Constructors
//
//------------------------------------------------------
#region Constructors
// Prevent 3rd parties from extending this abstract base class.
internal RayHitTestResult(Visual3D visualHit, Model3D modelHit) : base(visualHit)
{
_modelHit = modelHit;
}
//------------------------------------------------------
//
// Public Properties
//
//------------------------------------------------------
//------------------------------------------------------
//
// Public Events
//
//------------------------------------------------------
//------------------------------------------------------
//
// Protected Methods
//
//------------------------------------------------------
#region Protected Methods
/// <summary>
/// AttachChild
///
/// Derived classes must call this method to notify the Visual3D layer that a new
/// child appeard in the children collection. The Visual3D layer will then call the GetVisual3DChild
/// method to find out where the child was added.
///
/// Remark: To move a Visual3D child in a collection it must be first disconnected and then connected
/// again. (Moving forward we might want to add a special optimization there so that we do not
/// unmarshal our composition resources).
/// </summary>
protected void AddVisual3DChild(Visual3D child)
{
// It is invalid to modify the children collection that we
// might be iterating during a property invalidation tree walk.
if (IsVisualChildrenIterationInProgress)
{
throw new InvalidOperationException(SR.Get(SRID.CannotModifyVisualChildrenDuringTreeWalk));
}
Debug.Assert(child != null);
Debug.Assert(child.InternalVisualParent == null);
child.SetParent(this);
// set the inheritance context so databinding, etc... work
ProvideSelfAsInheritanceContext(child, null);
// The child already might be dirty. Hence we need to propagate dirty information
// from the parent and from the child.
Visual3D.PropagateFlags(
this,
VisualFlags.IsSubtreeDirtyForPrecompute,
VisualProxyFlags.IsSubtreeDirtyForRender);
Visual3D.PropagateFlags(
child,
VisualFlags.IsSubtreeDirtyForPrecompute,
VisualProxyFlags.IsSubtreeDirtyForRender);
//
// Fire notifications
OnVisualChildrenChanged(child, /* visualRemoved = */ null);
child.FireOnVisualParentChanged(null);
}
/// <summary>
/// Initializes a new instance of the <see cref="LineGeometryBuilder"/> class.
/// </summary>
/// <param name="visual">
/// The visual parent of the geometry (the transform is calculated from this object).
/// </param>
public LineGeometryBuilder(Visual3D visual)
: base(visual)
{
}
internal void SetParent(Visual3D newParent)
{
_2DParent.ClearValue(this);
_3DParent = newParent;
Debug.Assert(InternalVisualParent == newParent);
}
void MS.Internal.IVisual3DContainer.RemoveChild(Visual3D child)
{
}
public System.Windows.Media.Media3D.GeneralTransform2DTo3D TransformToAncestor(System.Windows.Media.Media3D.Visual3D ancestor)
{
Contract.Requires(ancestor != null);
return(default(System.Windows.Media.Media3D.GeneralTransform2DTo3D));
}
protected void RemoveVisual3DChild(Visual3D child)
{
}
/// <summary>
/// Determines if the specified visual is transparent.
/// </summary>
/// <param name="visual">
/// The visual.
/// </param>
/// <returns>
/// True if the visual is transparent.
/// </returns>
private bool IsVisualTransparent(Visual3D visual)
{
return ElementSortingHelper.IsTransparent(visual);
}
public GeneralTransform3D TransformToAncestor(Visual3D ancestor)
{
return(default(GeneralTransform3D));
}
/// <summary>
/// Initializes a new instance of the <see cref="PointGeometryBuilder"/> class.
/// </summary>
/// <param name="visual">
/// The visual.
/// </param>
public PointGeometryBuilder(Visual3D visual)
: base(visual)
{
}
public GeneralTransform3D TransformToDescendant(Visual3D descendant)
{
return(default(GeneralTransform3D));
}
/// <summary>
/// Gets the object space to world space transformation for the given Visual3D
/// </summary>
/// <param name="visual3DStart">The visual whose world space transform should be found</param>
/// <param name="viewport">The containing Viewport3D for the Visual3D</param>
/// <returns>The world space transformation</returns>
internal static Matrix3D GetWorldTransformationMatrix(Visual3D visual3DStart, out Viewport3DVisual viewport)
{
DependencyObject dependencyObject = visual3DStart;
Matrix3D worldTransform = Matrix3D.Identity;
while (dependencyObject != null)
{
Visual3D visual3D = dependencyObject as Visual3D;
// we reached the top
if (visual3D == null)
{
break;
}
Transform3D transform = (Transform3D)visual3D.GetValue(Visual3D.TransformProperty);
if (transform != null)
{
transform.Append(ref worldTransform);
}
dependencyObject = VisualTreeHelper.GetParent(dependencyObject);
}
if (dependencyObject != null)
{
viewport = (Viewport3DVisual)dependencyObject;
}
else
{
viewport = null;
}
return worldTransform;
}
protected void AddVisual3DChild(Visual3D child)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ScreenGeometryBuilder"/> class.
/// </summary>
/// <param name="visual">
/// The visual.
/// </param>
protected ScreenGeometryBuilder(Visual3D visual)
{
this.visual = visual;
}
void MS.Internal.IVisual3DContainer.AddChild(Visual3D child)
{
}