/// <summary>
/// Gets the scene object below the cursor.
/// </summary>
public async Task <SceneObject> GetObjectBelowCursorAsync()
{
if (!m_isMouseInside)
{
return(null);
}
List <SceneObject> objects = await m_renderLoop.PickObjectAsync(
Point.FromGdiPoint(this.PointToClient(Cursor.Position)),
new PickingOptions()
{
OnlyCheckBoundingBoxes = false
});
if (objects == null)
{
return(null);
}
return(objects.FirstOrDefault());
}
private async void OnRefeshTimer_Tick(object sender, EventArgs e)
{
if (sender != m_refreshTimer)
{
return;
}
if (this.AssociatedObject == null)
{
return;
}
if (m_onRefresh)
{
return;
}
m_onRefresh = true;
try
{
// Check for empty position
if (m_mouseLocation == new Point())
{
return;
}
// Pick objects
List <SceneObject> pickedObjects = await m_renderLoop.PickObjectAsync(
new SeeingSharp.Point((int)m_mouseLocation.X, (int)m_mouseLocation.Y),
new PickingOptions());
GenericObject topUnderCursor = pickedObjects
.Where((actPicked) => actPicked is GenericObject)
.FirstOrDefault() as GenericObject;
// Check current state after async action
if (sender != m_refreshTimer)
{
return;
}
if (this.AssociatedObject == null)
{
return;
}
// Sync
GenericObject newHovered = null;
if (topUnderCursor != null)
{
newHovered = topUnderCursor;
}
// Apply changes to the scene
if (m_hoveredObject != newHovered)
{
await m_scene.ManipulateSceneAsync(manipulator =>
{
if (m_hoveredObject != null)
{
manipulator.ClearLayer(Constants.LAYER_HOVER);
}
m_hoveredObject = newHovered;
if (m_hoveredObject != null)
{
GenericObject newHovering = new GenericObject(m_hoveredObject.GeometryResourceKey);
newHovering.TransformationType = SpacialTransformationType.TakeFromOtherObject;
newHovering.TransformSourceObject = newHovered;
newHovering.Color = SeeingSharp.Color.Blue;
manipulator.Add(newHovering, Constants.LAYER_HOVER);
}
});
}
}
finally
{
m_onRefresh = false;
}
}