private void ShootTwoShots_Click(object sender, RoutedEventArgs e)
{
try
{
if (_asteroid == null)
{
MessageBox.Show("Need to make an asteroid first", this.Title, MessageBoxButton.OK, MessageBoxImage.Warning);
return;
}
ClearShots();
// Work backward to make sure the shots don't miss
Point3D pointInside1 = Math3D.GetRandomVector_Spherical(MAXRADIUS / 3).ToPoint();
Point3D pointInside2 = Math3D.GetRandomVector_Spherical(MAXRADIUS / 3).ToPoint();
Vector3D directionOut1 = Math3D.GetRandomVector_Spherical_Shell(MAXRADIUS * 3);
Vector3D directionOut2 = Math3D.RotateAroundAxis(directionOut1, Math3D.GetRandomVector_Spherical_Shell(1), Math1D.DegreesToRadians(Math1D.GetNearZeroValue(30)));
_shots = new[]
{
Tuple.Create(pointInside1 + directionOut1, -directionOut1, 1d),
Tuple.Create(pointInside2 + directionOut2, -directionOut2, 1d),
};
// Find the deepest point of intersection
var hits = _shots.
Select(o => Math3D.GetIntersection_Hull_Ray(_asteroid, o.Item1, o.Item2)).
ToArray();
if (hits.Length != 2 || hits.Any(o => o.Length != 2))
{
MessageBox.Show("Expected two hits: " + hits.Length.ToString(), this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
// Voronoi
Point3D[] controlPoints = GetVoronoiCtrlPoints_TwoLines(hits, _asteroid);
_voronoi = Math3D.GetVoronoi(controlPoints, true);
DrawShatteredAsteroid_ORIG();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
private static Tuple <HullVoronoiExploder_Response, bool> SplitHull(ITriangleIndexed[] convexHull, Tuple <Point3D, Vector3D, double>[] shots, HullVoronoiExploder_Options options, double aabbLen)
{
#region intersect with the hull
var hits = shots.
Select(o => new HullVoronoiExploder_ShotHit()
{
Shot = o,
Hit = GetHit(convexHull, o.Item1, o.Item2, o.Item3),
}).
Where(o => o.Hit != null).
ToArray();
if (hits.Length == 0)
{
return(null);
}
#endregion
#region voronoi
Point3D[] controlPoints = GetVoronoiCtrlPoints(hits, convexHull, options.MinCount, options.MaxCount, aabbLen);
VoronoiResult3D voronoi = Math3D.GetVoronoi(controlPoints, true);
if (voronoi == null)
{
return(null);
}
#endregion
// There is enough to start populating the response
HullVoronoiExploder_Response retVal = new HullVoronoiExploder_Response()
{
Hits = hits,
ControlPoints = controlPoints,
Voronoi = voronoi,
};
#region intersect voronoi and hull
// Intersect
Tuple <int, ITriangleIndexed[]>[] shards = null;
try
{
shards = Math3D.GetIntersection_Hull_Voronoi_full(convexHull, voronoi);
}
catch (Exception)
{
return(Tuple.Create(retVal, false));
}
if (shards == null)
{
return(Tuple.Create(retVal, false));
}
// Smooth
if (options.ShouldSmoothShards)
{
shards = shards.
Select(o => Tuple.Create(o.Item1, Asteroid.SmoothTriangles(o.Item2))).
ToArray();
}
// Validate
shards = shards.
Where(o => o.Item2 != null && o.Item2.Length >= 3).
Where(o =>
{
Vector3D firstNormal = o.Item2[0].NormalUnit;
return(o.Item2.Skip(1).Any(p => !Math.Abs(Vector3D.DotProduct(firstNormal, p.NormalUnit)).IsNearValue(1)));
}).
ToArray();
if (shards.Length == 0)
{
return(Tuple.Create(retVal, false));
}
#endregion
#region populate shards
retVal.Shards = shards.
Select(o =>
{
var aabb = Math3D.GetAABB(o.Item2);
double radius = Math.Sqrt((aabb.Item2 - aabb.Item1).Length / 2);
Point3D center = Math3D.GetCenter(TriangleIndexed.GetUsedPoints(o.Item2));
Vector3D centerVect = center.ToVector();
Point3D[] allPoints = o.Item2[0].AllPoints.
Select(p => p - centerVect).
ToArray();
TriangleIndexed[] shiftedTriangles = o.Item2.
Select(p => new TriangleIndexed(p.Index0, p.Index1, p.Index2, allPoints)).
ToArray();
return(new HullVoronoiExploder_Shard()
{
VoronoiControlPointIndex = o.Item1,
Hull_ParentCoords = o.Item2,
Hull_Centered = shiftedTriangles,
Radius = radius,
Center_ParentCoords = center,
});
}).
Where(o => o != null).
ToArray();
#endregion
return(Tuple.Create(retVal, true));
}
private void ShootOneShot_Click(object sender, RoutedEventArgs e)
{
try
{
if (_asteroid == null)
{
MessageBox.Show("Need to make an asteroid first", this.Title, MessageBoxButton.OK, MessageBoxImage.Warning);
return;
}
ClearShots();
// Work backward to make sure the shot doesn't miss
Point3D pointInside = Math3D.GetRandomVector_Spherical(MAXRADIUS / 3).ToPoint();
Vector3D directionOut = Math3D.GetRandomVector_Spherical_Shell(MAXRADIUS * 3);
_shots = new[]
{
Tuple.Create(pointInside + directionOut, -directionOut, 1d),
};
// Find the deepest point of intersection
var hits = Math3D.GetIntersection_Hull_Ray(_asteroid, _shots[0].Item1, _shots[0].Item2);
if (hits.Length != 2)
{
MessageBox.Show("Expected two hits: " + hits.Length.ToString(), this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
//TODO: Put a point in front, then remove that subhull. This will look like exploded material
//or, put it on the same plane, and a cylinder will get cored out
//Point3D[] controlPoints = GetVoronoiCtrlPoints_AroundLine_Simple(hits[0].Item1, hits[1].Item1, StaticRandom.Next(2, 7));
Point3D[] controlPoints = GetVoronoiCtrlPoints_AroundLine(hits[0].Item1, hits[1].Item1);
_voronoi = Math3D.GetVoronoi(controlPoints, true);
DrawShatteredAsteroid_ORIG();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
private void ProcessShots_ORIG()
{
// Intersect with the asteroid
#region ORIG
//var hits = _shots.
// Select(o =>
// {
// var intersections = Math3D.GetIntersection_Hull_Ray(_asteroid, o.Item1, o.Item2);
// if (intersections.Length != 2)
// {
// return (Tuple<Point3D, Point3D>)null;
// }
// Vector3D penetrate = (intersections[1].Item1 - intersections[0].Item1) * o.Item3;
// return Tuple.Create(intersections[0].Item1, intersections[0].Item1 + penetrate);
// }).
// Where(o => o != null).
// ToArray();
#endregion
var hits = _shots.
Select(o => new ShotHit()
{
Shot = o,
Hit = ExplosionForceWorker.GetHit(_asteroid, o.Item1, o.Item2, o.Item3),
}).
Where(o => o != null).
ToArray();
if (hits.Length == 0)
{
if (_shots != null)
{
foreach (var shot in _shots)
{
DrawShot(shot.Item1, shot.Item2 * 2);
}
}
_voronoi = null;
DrawAsteroid(_asteroid);
return;
}
// Voronoi
Point3D[] controlPoints = ExplosionForceWorker.GetVoronoiCtrlPoints(hits, _asteroid);
_voronoi = Math3D.GetVoronoi(controlPoints, true);
DrawShatteredAsteroid_ORIG();
}
private void ClearShots()
{
_shots = null;
_voronoi = null;
_explosion = null;
ClearVisuals();
}
private void ClearClickRayData()
{
_voronoi2NeighborRayStarts.Clear();
_voronoiResult = null;
_viewportFull.Children.RemoveAll(_clickRays3D.Select(o => o.Visual));
_clickRays3D.Clear();
}
private void btn3DVoronoiDelaunay_Click(object sender, RoutedEventArgs e)
{
const double DELAUNAYRADIUS = .008;
const double VORONOIRADIUS = .015;
try
{
PrepFor3D();
ClearTempVisuals();
_voronoiResult = Math3D.GetVoronoi(_dots3D.SelectMany(o => o.Positions).ToArray(), true);
// Delaunay
_misc3D.Add(new Item3D(AddLines(_viewportFull, Tetrahedron.GetUniqueLines(_voronoiResult.Delaunay), _voronoiResult.ControlPoints, UtilityWPF.ColorFromHex("40000000"), DELAUNAYRADIUS)));
// Voronoi Interior Edges
var interiorEdges = _voronoiResult.Edges.
Where(o => o.EdgeType == EdgeType.Segment).
Select(o => Tuple.Create(o.Index0, o.Index1.Value));
_misc3D.Add(new Item3D(AddLines(_viewportFull, interiorEdges, _voronoiResult.EdgePoints, Colors.White, VORONOIRADIUS)));
// Voronoi Rays
#region all same color
//var rays = _voronoiResult.Edges.
// Where(o => o.EdgeType == EdgeType.Ray).
// Select(o => Tuple.Create(o.Point0, o.Point0 + (o.Direction.Value * RAYLENGTH)));
//_misc3D.Add(new Item3D(AddLines(_viewportFull, rays, Colors.Cornsilk, VORONOIRADIUS)));
#endregion
#region color by count
var raysByIndex = _voronoiResult.Edges.
Where(o => o.EdgeType == EdgeType.Ray).
ToLookup(o => o.Index0);
var raysByCount = raysByIndex.
Select(o => new { Count = o.Count(), Rays = o }).
ToLookup(o => o.Count);
foreach (var raySet in raysByCount)
{
var rayTuples = raySet.
SelectMany(o => o.Rays).
Select(o => Tuple.Create(o.Point0, o.Point0 + (o.Direction.Value * RAYLENGTH)));
Color color;
switch (raySet.Key)
{
case 1:
color = Colors.Cornsilk;
break;
case 2:
color = Colors.Honeydew;
break;
default:
color = Colors.Violet;
break;
}
_misc3D.Add(new Item3D(AddLines(_viewportFull, rayTuples, color, VORONOIRADIUS)));
}
#endregion
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
