/// <summary>
/// Called when the <see cref="Children"/> collection was changed.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="eventArgs">
/// The <see cref="CollectionChangedEventArgs{IGeometricObject}"/> instance containing the event
/// data.
/// </param>
private void OnChildrenChanged(object sender, CollectionChangedEventArgs <IGeometricObject> eventArgs)
{
if (eventArgs.Action == CollectionChangedAction.Move)
{
return;
}
// Handle removed items.
var oldItems = eventArgs.OldItems;
int numberOfOldItems = oldItems.Count;
for (int i = 0; i < numberOfOldItems; i++)
{
var geometricObject = oldItems[i];
geometricObject.PoseChanged -= OnChildShapeChanged;
geometricObject.ShapeChanged -= OnChildShapeChanged;
}
// Handle new items.
var newItems = eventArgs.NewItems;
int numberOfNewItems = newItems.Count;
for (int i = 0; i < numberOfNewItems; i++)
{
var geometricObject = newItems[i];
geometricObject.PoseChanged += OnChildShapeChanged;
geometricObject.ShapeChanged += OnChildShapeChanged;
}
// Rebuild spatial partition.
if (_partition != null)
{
_partition.Clear();
int numberOfChildren = Children.Count;
for (int i = 0; i < numberOfChildren; i++)
{
_partition.Add(i);
}
}
if (numberOfOldItems == 1 &&
numberOfNewItems == 1 &&
eventArgs.OldItemsIndex == eventArgs.NewItemsIndex)
{
// Exactly one item was replaced.
// --> Set the feature index of the item in the event args.
var shapeChangedEventArgs = ShapeChangedEventArgs.Create(eventArgs.OldItemsIndex);
OnChanged(shapeChangedEventArgs);
shapeChangedEventArgs.Recycle();
}
else
{
// Multiple items added or removed. The indices of multiple items have changed.
// --> Do not set a feature index. Use the default.
OnChanged(ShapeChangedEventArgs.Empty);
}
}
/// <inheritdoc/>
protected override void OnChanged(ShapeChangedEventArgs eventArgs)
{
// Set cached AABB to "invalid".
_aabbLocal = new Aabb(new Vector3F(float.NaN), new Vector3F(float.NaN));
_innerPoint = new Vector3F(float.NaN);
base.OnChanged(eventArgs);
}
/// <summary>
/// Raises the <see cref="Shape.Changed"/> event.
/// </summary>
/// <param name="eventArgs">
/// <see cref="ShapeChangedEventArgs"/> object that provides the arguments for the event.
/// </param>
/// <remarks>
/// <strong>Notes to Inheritors:</strong> When overriding <see cref="OnChanged"/> in a derived
/// class, be sure to call the base class's <see cref="OnChanged"/> method so that registered
/// delegates receive the event.
/// </remarks>
protected virtual void OnChanged(ShapeChangedEventArgs eventArgs)
{
var handler = _changed;
if (handler != null)
{
handler(this, eventArgs);
}
}
/// <inheritdoc/>
protected override void OnChanged(ShapeChangedEventArgs eventArgs)
{
// Set cached AABB to "invalid".
_minHeight = float.NaN;
_maxHeight = float.NaN;
// Cached normals are also invalid.
//NormalArray = null;
base.OnChanged(eventArgs);
}
private void OnChildShapeChanged(object sender, ShapeChangedEventArgs eventArgs)
{
IGeometricObject geometricObject = (IGeometricObject)sender;
if (geometricObject.Shape is ConvexShape == false)
{
throw new GeometryException("The child objects in a ConvexHullOfShapes must have ConvexShapes.");
}
OnChanged(ShapeChangedEventArgs.Empty);
}
/// <summary>
/// Invalidates the whole triangle mesh or a single triangle.
/// </summary>
/// <param name="triangleIndex">
/// Index of the triangle. Can be -1 to invalidate the whole mesh.
/// </param>
/// <param name="invalidateTopology">
/// If set to <see langword="true"/> the mesh topology is invalidated.
/// </param>
/// <remarks>
/// <para>
/// This method must be called if the position of a triangle stored in <see cref="Mesh"/> is
/// changed. This method updates the <see cref="Partition"/> and raises the
/// <see cref="Shape.Changed"/> event by calling <see cref="Shape.OnChanged"/>.
/// </para>
/// <para>
/// If the mesh topology has changed, <paramref name="invalidateTopology"/> must be set to
/// <see langword="true"/>. The topology has changed if triangle neighbor relationships have
/// changed. If each triangle has the same neighbor triangles as before and only the vertices
/// were moved, <paramref name="invalidateTopology"/> can be <see langword="false"/>.
/// </para>
/// </remarks>
/// <exception cref="ArgumentOutOfRangeException">
/// <paramref name="triangleIndex"/> is out of range.
/// </exception>
public void Invalidate(int triangleIndex, bool invalidateTopology)
{
int numberOfTriangles = Mesh.NumberOfTriangles;
if (triangleIndex >= numberOfTriangles)
{
throw new ArgumentOutOfRangeException("triangleIndex");
}
// Set cached AABB to "invalid".
_aabbLocal = new Aabb(new Vector3F(float.NaN), new Vector3F(float.NaN));
// Fill new spatial partition.
if (_partition != null)
{
if (numberOfTriangles != _partition.Count)
{
// Triangle count has changed. Re-initialize partition content.
_partition.Clear();
for (int i = 0; i < numberOfTriangles; i++)
{
_partition.Add(i);
}
}
else
{
// Same number of triangles - invalidate the triangle.
if (triangleIndex >= 0)
{
_partition.Invalidate(triangleIndex);
}
else
{
_partition.Invalidate();
}
}
}
if (invalidateTopology)
{
ComputeTriangleNeighbors();
}
if (triangleIndex < 0)
{
OnChanged(ShapeChangedEventArgs.Empty);
}
else
{
var eventArgs = ShapeChangedEventArgs.Create(triangleIndex);
OnChanged(eventArgs);
eventArgs.Recycle();
}
}
/// <summary>
/// Called when a child object was changed.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="eventArgs">
/// The <see cref="EventArgs"/> instance containing the event data.
/// </param>
private void OnChildShapeChanged(object sender, EventArgs eventArgs)
{
// Invalidate partition.
var index = Children.IndexOf(sender as IGeometricObject);
if (Partition != null)
{
if (index >= 0)
{
Partition.Invalidate(index);
}
else
{
Partition.Invalidate();
}
}
var shapeChangedEventArgs = ShapeChangedEventArgs.Create(index);
OnChanged(shapeChangedEventArgs);
shapeChangedEventArgs.Recycle();
}
/// <inheritdoc/>
protected override void OnShapeChanged(ShapeChangedEventArgs eventArgs)
{
base.OnShapeChanged(eventArgs);
// Synchronize absolute scale.
// (Remember: ShapeChanged is also triggered by scale changes.)
Levels.SetScale(ScaleWorld);
}
/// <summary>
/// Raises the <see cref="ShapeChanged"/> event.
/// </summary>
/// <param name="eventArgs">
/// <see cref="ShapeChangedEventArgs"/> object that provides the arguments for the event.
/// </param>
/// <remarks>
/// <strong>Notes to Inheritors:</strong> When overriding
/// <see cref="OnShapeChanged(ShapeChangedEventArgs)"/> in a derived class, be sure to call the
/// base class's <see cref="OnShapeChanged(ShapeChangedEventArgs)"/> method so that registered
/// delegates receive the event.
/// </remarks>
protected virtual void OnShapeChanged(ShapeChangedEventArgs eventArgs)
{
_aabbIsValid = false;
var handler = ShapeChanged;
if (handler != null)
handler(this, eventArgs);
}
/// <inheritdoc/>
protected override void OnChanged(ShapeChangedEventArgs eventArgs)
{
// Set cached AABB to "invalid".
_minHeight = float.NaN;
_maxHeight = float.NaN;
// Cached normals are also invalid.
//NormalArray = null;
base.OnChanged(eventArgs);
}
/// <summary>
/// Raises the <see cref="ShapeChanged"/> event.
/// </summary>
/// <param name="eventArgs">
/// <see cref="ShapeChangedEventArgs"/> object that provides the arguments for the event.
/// </param>
/// <remarks>
/// <strong>Notes to Inheritors:</strong> When overriding <see cref="OnShapeChanged(ShapeChangedEventArgs)"/>
/// in a derived class, be sure to call the base class's <see cref="OnShapeChanged(ShapeChangedEventArgs)"/>
/// method so that registered delegates receive the event.
/// </remarks>
protected virtual void OnShapeChanged(ShapeChangedEventArgs eventArgs)
{
// Reset shape dependent stuff.
_aabbIsValid = false;
BuoyancyData = null;
WakeUp();
UpdateMassFrame();
var handler = ShapeChanged;
if (handler != null)
handler(this, eventArgs);
}
/// <inheritdoc/>
protected override void OnShapeChanged(ShapeChangedEventArgs eventArgs)
{
base.OnShapeChanged(eventArgs);
// (Remember: ShapeChanged is also triggered by scale changes.)
if (_node != null)
{
_ignoreChanges = true;
_node.ScaleLocal = ScaleWorld;
_ignoreChanges = false;
}
}
/// <summary>
/// Raises the <see cref="ShapeChanged"/> event.
/// </summary>
/// <param name="eventArgs">
/// <see cref="EventArgs"/> object that provides the arguments for the event.
/// </param>
/// <remarks>
/// <strong>Notes to Inheritors:</strong> When overriding
/// <see cref="OnShapeChanged(ShapeChangedEventArgs)"/> in a derived class, be sure to call the
/// base class' <see cref="OnShapeChanged(ShapeChangedEventArgs)"/> method so that registered
/// delegates receive the event.
/// </remarks>
protected virtual void OnShapeChanged(ShapeChangedEventArgs eventArgs)
{
SetFlag(SceneNodeFlags.IsAabbDirty | SceneNodeFlags.IsDirty | SceneNodeFlags.IsDirtyScene);
var handler = ShapeChanged;
if (handler != null)
handler(this, eventArgs);
OnSceneChanged(this, SceneChanges.ShapeChanged);
}
/// <summary>
/// Called when child shape was changed.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="eventArgs">
/// The <see cref="ShapeChangedEventArgs"/> instance containing the event data.
/// </param>
private void OnChildShapeChanged(object sender, ShapeChangedEventArgs eventArgs)
{
CheckShapes();
OnChanged(eventArgs);
}
private void OnVolumeChanged(object sender, ShapeChangedEventArgs eventArgs)
{
Update(true);
}
/// <inheritdoc/>
protected override void OnChanged(ShapeChangedEventArgs eventArgs)
{
// Set cached AABB to "invalid".
_aabbLocal = new Aabb(new Vector3F(float.NaN), new Vector3F(float.NaN));
_innerPoint = new Vector3F(float.NaN);
base.OnChanged(eventArgs);
}
/// <summary>
/// Called when the shape was changed.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="eventArgs">
/// The <see cref="ShapeChangedEventArgs"/> instance containing the event data.
/// </param>
private void OnShapeChanged(object sender, ShapeChangedEventArgs eventArgs)
{
Changed = true;
var shape = (_geometricObject != null) ? _geometricObject.Shape : null;
// Check if shape type was changed (which invalidates the cached collision algos).
// Instead of comparing the types, we simply compare the instances.
ShapeTypeChanged = ShapeTypeChanged || (_shape != shape);
// Remember current shape.
_shape = shape;
RayShape ray = shape as RayShape;
if (ray != null)
_shapeType = ray.StopsAtFirstHit ? ShapeType.RayThatStopsAtFirstHit : ShapeType.Ray;
else
_shapeType = ShapeType.Default;
if (_domain == null)
return;
Debug.Assert(_domain != null);
// Clear existing contact info only.
int feature = eventArgs.Feature;
if (feature == -1)
{
// Invalidate all contacts that contain this collision object.
foreach (var contactSet in _domain.ContactSets.GetContacts(this))
{
foreach (var contact in contactSet)
contact.Recycle();
contactSet.Clear();
contactSet.IsValid = false;
}
return;
}
Debug.Assert(feature >= 0);
// Remove only the contacts of the given feature.
foreach (var contactSet in _domain.ContactSets.GetContacts(this))
{
if (contactSet.ObjectA == this)
{
for (int i = contactSet.Count - 1; i >= 0; i--)
{
Contact contact = contactSet[i];
if (contact.FeatureA == -1 || contact.FeatureA == feature)
{
contactSet.RemoveAt(i);
contact.Recycle();
}
}
}
else
{
Debug.Assert(contactSet.ObjectB == this);
for (int i = contactSet.Count - 1; i >= 0; i--)
{
Contact contact = contactSet[i];
if (contact.FeatureB == -1 || contact.FeatureB == feature)
{
contactSet.RemoveAt(i);
contact.Recycle();
}
}
}
contactSet.IsValid = false;
}
}
private void OnShapeChanged(object sender, ShapeChangedEventArgs eventArgs)
{
_aabbIsValid = false;
var handler = _shapeChanged;
if (handler != null)
handler(this, eventArgs);
}
private void OnChildShapeChanged(object sender, ShapeChangedEventArgs eventArgs)
{
IGeometricObject geometricObject = (IGeometricObject)sender;
if (geometricObject.Shape is ConvexShape == false)
throw new GeometryException("The child objects in a ConvexHullOfShapes must have ConvexShapes.");
OnChanged(ShapeChangedEventArgs.Empty);
}
/// <summary>
/// Called when the shape of a child geometric object was changed.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="eventArgs">
/// The <see cref="ShapeChangedEventArgs"/> instance containing the event data.
/// </param>
private void OnChildShapeChanged(object sender, ShapeChangedEventArgs eventArgs)
{
OnChanged(eventArgs);
}
/// <summary>
/// Raises the <see cref="Shape.Changed"/> event.
/// </summary>
/// <param name="eventArgs">
/// <see cref="ShapeChangedEventArgs"/> object that provides the arguments for the event.
/// </param>
/// <remarks>
/// <strong>Notes to Inheritors:</strong> When overriding <see cref="OnChanged"/> in a derived
/// class, be sure to call the base class's <see cref="OnChanged"/> method so that registered
/// delegates receive the event.
/// </remarks>
protected virtual void OnChanged(ShapeChangedEventArgs eventArgs)
{
var handler = _changed;
if (handler != null)
handler(this, eventArgs);
}
