public override void ShowRotationAdorner(Point rotationCenterPosition)
{
if (Viewport3D != null)
{
// In this sample we show WireBoxVisual3D around selected box (when there is a box selected)
if (SelectedBoxVisual3D != null)
{
_wireBoxVisual3D = new WireBoxVisual3D()
{
LineColor = Colors.Red,
LineThickness = 3,
CenterPosition = SelectedBoxVisual3D.CenterPosition,
Size = SelectedBoxVisual3D.Size
};
Viewport3D.Children.Add(_wireBoxVisual3D);
return;
}
// If no box is selected, we show WireCrossVisual3D at the RotationCenterPosition (if set)
// When MouseCameraController.RotateAroundMousePosition is set to true,
// MouseCameraController calculates the RotationCenterPosition with hit testing current mouse position on the 3D scene.
var targetPositionCamera = TargetCamera as TargetPositionCamera;
if (targetPositionCamera != null && targetPositionCamera.RotationCenterPosition != null)
{
_wireCrossVisual3D = new WireCrossVisual3D()
{
LineColor = Colors.Red,
LineThickness = 3,
LinesLength = 30,
Position = targetPositionCamera.RotationCenterPosition.Value
};
Viewport3D.Children.Add(_wireCrossVisual3D);
return;
}
}
// If we came here then Viewport3D and SelectedBoxVisual3D are not set or there is no 3D object behind the mouse position (RotationCenterPosition is null)
// In this case we show standard rotation marker
base.ShowRotationAdorner(rotationCenterPosition);
}
public override void HideRotationAdorner()
{
if (Viewport3D != null)
{
if (_wireBoxVisual3D != null)
{
Viewport3D.Children.Remove(_wireBoxVisual3D);
_wireBoxVisual3D = null;
return;
}
if (_wireCrossVisual3D != null)
{
Viewport3D.Children.Remove(_wireCrossVisual3D);
_wireCrossVisual3D = null;
return;
}
}
base.HideRotationAdorner();
}
private void OnPreviewKeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Enter)
{
var mousePosition = Mouse.GetPosition(MainDXViewportView);
var mouseRay = MainDXViewportView.DXScene.GetRayFromCamera((int)mousePosition.X, (int)mousePosition.Y);
if (_optimizedPointMesh != null)
{
//// Uncomment the following code to test the GetPositionIndexesAroundRay method
//var positionIndexes = _optimizedPointMesh.GetPositionIndexesAroundRay(mouseRay,
// maxDistance: 0.1f,
// orderByDistanceToRayPosition: true,
// maxResultsCount: 0);
//for (var i = 0; i < positionIndexes.Count; i++)
//{
// var wireCrossVisual3D = new WireCrossVisual3D()
// {
// LineColor = Colors.Yellow,
// LineThickness = 1,
// LinesLength = 10,
// Position = _optimizedPointMesh.PositionsArray[positionIndexes[i]].ToWpfPoint3D()
// };
// MainViewport.Children.Add(wireCrossVisual3D);
//}
//_pixelMaterial.ReadZBuffer = true;
//_customRenderableNode.NotifySceneNodeChange(SceneNode.SceneNodeDirtyFlags.MaterialChanged);
//return;
float positionDistance;
var closestPositionIndex = _optimizedPointMesh.GetClosestPositionIndex(mouseRay, out positionDistance);
if (closestPositionIndex != -1)
{
var position = _optimizedPointMesh.PositionsArray[closestPositionIndex];
if (_wireCrossVisual3D == null)
{
_wireCrossVisual3D = new WireCrossVisual3D()
{
LineColor = Colors.Blue,
LineThickness = 2,
LinesLength = 2
};
MainViewport.Children.Add(_wireCrossVisual3D);
}
else
{
_wireCrossVisual3D.IsVisible = true;
}
_wireCrossVisual3D.Position = position.ToWpfPoint3D();
// In this sample the Point cloud is rendered without reading and writing to depth buffer (see ShowPositionsArray method).
// This means that all the points will be rendered regardless of other 3D objects in the scene.
// To correctly show other 3D object (in our case WireCrossVisual3D), we need to enable reading depth buffer.
// This will prevent rendering points where some other object is closer to the camera.
_pixelMaterial.ReadZBuffer = true;
// SceneNode objects do not get automatic notifications when some properties are changed.
// We need to do that manually:
_customRenderableNode.NotifySceneNodeChange(SceneNode.SceneNodeDirtyFlags.MaterialChanged);
}
else
{
MessageBox.Show("No closest position found");
_wireCrossVisual3D.IsVisible = false;
_pixelMaterial.ReadZBuffer = false;
_customRenderableNode.NotifySceneNodeChange(SceneNode.SceneNodeDirtyFlags.MaterialChanged);
}
}
}
}
public ManuallyCreatedSceneNodes()
{
InitializeComponent();
// Wait until the DirectX device is created and then create the sample objects
MainDXViewportView.DXSceneDeviceCreated += delegate(object sender, EventArgs args)
{
CreateScene();
ResetCamera();
};
MainDXViewportView.SceneRendered += MainDXViewportViewOnSceneRendered;
// Show 3D WireCrossVisual3D at the location of camera rotation
MouseCameraController1.CameraRotateStarted += delegate(object sender, EventArgs args)
{
if (_wireCrossVisual3D != null)
{
MainViewport.Children.Remove(_wireCrossVisual3D);
_wireCrossVisual3D = null;
}
Point3D rotationCenter;
if (Camera1.RotationCenterPosition.HasValue)
{
rotationCenter = Camera1.RotationCenterPosition.Value;
}
else
{
rotationCenter = Camera1.TargetPosition;
}
_wireCrossVisual3D = new WireCrossVisual3D()
{
LineColor = Colors.Red,
LineThickness = 3,
LinesLength = 100,
Position = rotationCenter
};
MainViewport.Children.Add(_wireCrossVisual3D);
};
MouseCameraController1.CameraRotateEnded += delegate(object sender, EventArgs args)
{
if (_wireCrossVisual3D != null)
{
MainViewport.Children.Remove(_wireCrossVisual3D);
_wireCrossVisual3D = null;
}
};
this.Unloaded += delegate(object sender, RoutedEventArgs e)
{
if (_disposables != null)
{
_disposables.Dispose();
_disposables = null;
}
MainDXViewportView.Dispose();
};
}
void eventSource3D_MouseEnter(object sender, Ab3d.DirectX.Common.EventManager3D.Mouse3DEventArgs e)
{
if (e.RayHitResult != null)
{
Log("MouseEnter: " + e.RayHitResult.HitSceneNode);
// We need to save the hit SceneNode.
// This way we will be able to change the material back in the eventSource3D_MouseLeave event handler.
_selectedVisual3D = e.RayHitResult.HitSceneNode.GetVisual3D();
var wpfGeometryModel3DNode = e.RayHitResult.HitSceneNode as WpfGeometryModel3DNode;
if (wpfGeometryModel3DNode != null)
{
_selectedGeometryModel3D = wpfGeometryModel3DNode.GeometryModel3D;
}
else
{
_selectedGeometryModel3D = null;
}
var dxRayInstancedHitTestResult = e.RayHitResult as DXRayInstancedHitTestResult;
if (dxRayInstancedHitTestResult != null)
{
_selectedInstanceIndex = dxRayInstancedHitTestResult.HitInstanceIndex;
}
if (_wireCrossVisual3D == null)
{
_wireCrossVisual3D = new WireCrossVisual3D()
{
LineColor = Colors.DeepPink,
LineThickness = 2,
LinesLength = 10
};
}
_wireCrossVisual3D.Position = e.RayHitResult.HitPosition.ToWpfPoint3D();
if (!MainViewport3D.Children.Contains(_wireCrossVisual3D))
{
MainViewport3D.Children.Add(_wireCrossVisual3D);
}
}
else
{
_selectedVisual3D = null;
_selectedGeometryModel3D = null;
_selectedInstanceIndex = -1;
Log("MouseEnter: <null>");
return;
}
if (_selectedInstanceIndex != -1)
{
ChangeInstanceColor(_selectedInstanceIndex, Colors.Red);
}
else
{
ChangeColor(e, Colors.Red);
}
}
