void eventSource3D_MouseLeave(object sender, Ab3d.DirectX.Common.EventManager3D.Mouse3DEventArgs e)
{
Log("MouseLeave: " + (e.RayHitResult != null ? e.RayHitResult.HitSceneNode.ToString() : "<null>"));
// Note that the e.RayHitResult.HitSceneNode is set to the new hit object (object that is hit when we left the previously entered object)
// Therefore we cannot use this to change the color.
if (_selectedInstanceIndex != -1)
{
ChangeInstanceColor(_selectedInstanceIndex, Colors.Yellow);
}
else if (_selectedGeometryModel3D != null)
{
_selectedGeometryModel3D.Material = new DiffuseMaterial(new SolidColorBrush(Colors.Yellow));
}
else if (_selectedVisual3D != null)
{
ChangeColor(_selectedVisual3D, Colors.Yellow);
}
_selectedVisual3D = null;
_selectedInstanceIndex = -1;
if (_wireCrossVisual3D != null)
{
MainViewport3D.Children.Remove(_wireCrossVisual3D);
}
}
private void ChangeColor(Ab3d.DirectX.Common.EventManager3D.Mouse3DEventArgs e, System.Windows.Media.Color color)
{
var wpfGeometryModel3DNode = e.RayHitResult.HitSceneNode as WpfGeometryModel3DNode;
if (wpfGeometryModel3DNode != null)
{
wpfGeometryModel3DNode.GeometryModel3D.Material = new DiffuseMaterial(new SolidColorBrush(color));
}
else
{
var hitVisual3D = e.RayHitResult.HitSceneNode.GetVisual3D();
ChangeColor(hitVisual3D, color);
}
}
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);
}
}
