private void Window_Loaded(object sender, RoutedEventArgs e)
{
try
{
// Init World
_world = new World();
_world.Updating += new EventHandler<WorldUpdatingArgs>(World_Updating);
_world.SetWorldSize(new Point3D(-100, -100, -100), new Point3D(100, 100, 100));
_world.UnPause();
// Camera Trackball
_trackball = new TrackBallRoam(_camera);
//_trackball.ShouldHitTestOnOrbit = true;
_trackball.EventSource = grdViewPort; //NOTE: If this control doesn't have a background color set, the trackball won't see events (I think transparent is ok, just not null)
_trackball.AllowZoomOnMouseWheel = true;
_trackball.Mappings.AddRange(TrackBallMapping.GetPrebuilt(TrackBallMapping.PrebuiltMapping.MouseComplete));
//_trackball.GetOrbitRadius += new GetOrbitRadiusHandler(Trackball_GetOrbitRadius);
// Trackball Controls
SetupModelTrackball();
SetupFlowTrackball();
// Fluid lines
AddFluidVisuals(Convert.ToInt32(NUMFLUIDVISUALS * _flowViscosity));
// Force lines
_fluidHullForceLines = new ScreenSpaceLines3D(true);
_fluidHullForceLines.Color = _colors.ForceLine;
_fluidHullForceLines.Thickness = 2d;
_viewport.Children.Add(_fluidHullForceLines);
// Field - may want to only add this when a body is added
_field = new FluidField3D(20);
_field.Diffusion = 0;
_field.Damping = 0; //GetFluidViscocity(); // this stays zero (see comments in VelocityViscocityChanged)
_field.BoundryType = FluidFieldBoundryType3D.Open_Slaved;
_fieldUniform = new FluidFieldUniform();
_field.OpenBoundryParent = _fieldUniform;
_field.SizeWorld = 10d; // This changes whenever a body is swapped out
_fieldCells = _field.GetCells();
_fieldField = new FluidFieldField(_field);
_fieldField.Viscosity = GetFluidViscocity();
_isInitialized = true;
ShowHideFluidBoundry();
ShowHideBlockedCells();
VelocityViscocityChanged();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
public static int[] GetBlockedCells(FluidField3D field, IEnumerable<ITriangleIndexed[]> hulls)
{
//NOTE: The hulls need to be in model coords
// Get populated hulls
ITriangleIndexed[][] hulls1 = hulls.Where(o => o.Length > 0).ToArray();
if (hulls1.Length == 0)
{
return new int[0]; // no hulls were passed in
}
// Get the location of all the cells
Rectangle3DIndexedMapped[] cells1 = field.GetCells();
#region Filter AABB
// Remove non aabb matches
Rect3D[] aabbs = hulls1.Select(o => Math3D.GetAABB_Rect(o[0].AllPoints)).ToArray();
Rectangle3DIndexedMapped[] cells2 = cells1.Where(o =>
{
Rect3D cellRect = o.ToRect3D();
return aabbs.Any(p => p.OverlapsWith(cellRect));
}).ToArray();
if (cells2.Length == 0)
{
return new int[0]; // this should never happen
}
#endregion
//TODO: When multiple hulls are passed in, ignore cells that are outside of a particular hull's aabb
#region Test triangles
// Look for intersecting edges
int[] edgeMatches = new int[0];
if (cells2.Length > 0)
{
// aabbs is for entire hulls. This needs to be for each triangle in each hull
Tuple<ITriangle, Rect3D>[] hullTrianglesAABBs = hulls.SelectMany(o => o.Select(p => new Tuple<ITriangle, Rect3D>(p, Math3D.GetAABB_Rect(p)))).ToArray();
// Now compare each remaining candidate cell to each triangle of each hull
edgeMatches = GetBlockedCellsSprtEdgeMap(cells2).
AsParallel().
Where(o => hullTrianglesAABBs.Any(p => IsEdgeMatch(p, o.Item1))).
SelectMany(o => o.Item2.Select(p => cells2[p].Mapping.Offset1D)). // add all the cells that neighbor this corner point
Distinct(). // need distinct, since cells were added multiple times
ToArray();
}
#endregion
// Exit Function
return edgeMatches;
}