private static GeometryModel3D GetModel_WoodIron_Ring_Band(double ballRadius, double z, System.Windows.Media.Media3D.Material material, TriangleIndexed[] ball, SortedList <string, double> from, SortedList <string, double> to, string prefix)
{
const double ENLARGE = 1.04d;
GeometryModel3D retVal = new GeometryModel3D();
retVal.Material = material;
retVal.BackMaterial = material;
double bandHeight = WeaponDNA.GetKeyValue(prefix + "Height", from, to, StaticRandom.NextPercent(ballRadius * .15, .5));
double bandHeightHalf = bandHeight / 2d;
// Slice the hull at the top and bottom band z's
Point3D[] slice1 = Math3D.GetIntersection_Hull_Plane(ball, new Triangle(new Point3D(0, 0, z - bandHeightHalf), new Point3D(1, 0, z - bandHeightHalf), new Point3D(0, 1, z - bandHeightHalf)));
Point3D[] slice2 = Math3D.GetIntersection_Hull_Plane(ball, new Triangle(new Point3D(0, 0, z + bandHeightHalf), new Point3D(1, 0, z + bandHeightHalf), new Point3D(0, 1, z + bandHeightHalf)));
// Enlarge those polygons xy, leave z alone
slice1 = slice1.Select(o => new Point3D(o.X * ENLARGE, o.Y * ENLARGE, o.Z)).ToArray();
slice2 = slice2.Select(o => new Point3D(o.X * ENLARGE, o.Y * ENLARGE, o.Z)).ToArray();
// Now turn those two polygons into a 3d hull
TriangleIndexed[] band = Math3D.GetConvexHull(UtilityCore.Iterate(slice1, slice2).ToArray());
retVal.Geometry = UtilityWPF.GetMeshFromTriangles(band);
return(retVal);
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
try
{
#region Trackball
// 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);
#endregion
//Material
_material = new MaterialGroup();
RefreshColors();
// Visuals
AddVisual(UtilityWPF.GetCylinder_AlongX(60, 1, 2), new Point3D(-2.5, 2.5, 0));
AddVisual(UtilityWPF.GetCube_IndependentFaces(new Point3D(-1, -1, -1), new Point3D(1, 1, 1)), new Point3D(2.5, 2.5, 0));
AddVisual(UtilityWPF.GetSphere_LatLon(20, 1), new Point3D(-2.5, -2.5, 0));
var hull = Math3D.GetConvexHull(Enumerable.Range(0, 40).Select(o => Math3D.GetRandomVector_Spherical(1.1, 1.3).ToPoint()).ToArray());
AddVisual(UtilityWPF.GetMeshFromTriangles(hull), new Point3D(2.5, -2.5, 0));
AddVisual(UtilityWPF.GetMeshFromTriangles_IndependentFaces(hull), new Point3D(2.5, -6, 0));
// Timer
_timer = new DispatcherTimer();
_timer.Interval = TimeSpan.FromMilliseconds(20);
_timer.Tick += Timer_Tick;
_timer.Start();
_isInitialized = true;
RefreshColors();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
/// <summary>
/// This is exposed so it can be called externally on a separate thread, then call this asteroid's constructor
/// in the main thread once this returns
/// </summary>
public static ITriangleIndexed[] GetHullTriangles(double radius)
{
const int NUMPOINTS = 60; // too many, and it looks too perfect
Exception lastException = null;
Random rand = StaticRandom.GetRandomForThread();
for (int infiniteLoopCntr = 0; infiniteLoopCntr < 50; infiniteLoopCntr++) // there is a slight chance that the convex hull generator will choke on the inputs. If so just retry
{
try
{
double minRadius = radius * .9d;
Point3D[] points = new Point3D[NUMPOINTS];
// Make a point cloud
for (int cntr = 0; cntr < NUMPOINTS; cntr++)
{
points[cntr] = Math3D.GetRandomVector_Spherical(minRadius, radius).ToPoint();
}
// Squash it
Transform3DGroup transform = new Transform3DGroup();
transform.Children.Add(new ScaleTransform3D(.33d + (rand.NextDouble() * .66d), .33d + (rand.NextDouble() * .66d), 1d)); // squash it
transform.Children.Add(new RotateTransform3D(new QuaternionRotation3D(Math3D.GetRandomRotation()))); // giving it a random rotation, since it's always squashed along the same axiis
transform.Transform(points);
// Get a hull that wraps those points
ITriangleIndexed[] retVal = Math3D.GetConvexHull(points.ToArray());
// Get rid of unused points
retVal = TriangleIndexed.Clone_CondensePoints(retVal);
// Exit Function
return(retVal);
}
catch (Exception ex)
{
lastException = ex;
}
}
throw new ApplicationException(lastException.ToString());
}
private static Model3DGroup GetModel_WoodIron(WeaponSpikeBallDNA dna, WeaponSpikeBallDNA finalDNA, WeaponMaterialCache materials)
{
Model3DGroup retVal = new Model3DGroup();
Random rand = StaticRandom.GetRandomForThread();
var from = dna.KeyValues;
var to = finalDNA.KeyValues;
double spikeLength = dna.Radius * 1.4d;
double ballRadius = dna.Radius * 1d;
double spikeRadius = dna.Radius * .2;
#region Ball
System.Windows.Media.Media3D.Material material = materials.Ball_Wood; // the property get returns a slightly random color
GeometryModel3D geometry = new GeometryModel3D();
geometry.Material = material;
geometry.BackMaterial = material;
// Create a convex hull out of semi evenly distibuted points
int numHullPoints = Convert.ToInt32(WeaponDNA.GetKeyValue("numHullPoints", from, to, rand.Next(20, 50)));
TriangleIndexed[] ball = Math3D.GetConvexHull(Math3D.GetRandomVectors_SphericalShell_EvenDist(numHullPoints, ballRadius, .03, 10).Select(o => o.ToPoint()).ToArray());
geometry.Geometry = UtilityWPF.GetMeshFromTriangles(ball);
retVal.Children.Add(geometry);
#endregion
// These are placed where the rings are, to push spikes away (so that spikes don't poke through the rings)
List <Vector3D> staticPoints = new List <Vector3D>();
#region Rings
material = materials.Spike_Iron; // the property get returns a slightly random color
// 0, 1 or 2 rings. Higher chance of 0 than 2
int numRings = Convert.ToInt32(WeaponDNA.GetKeyValue("numRings", from, to, Math.Floor(rand.NextPow(2, 2.3))));
double[] zs = new double[0];
switch (numRings)
{
case 0:
break;
case 1:
zs = new double[] { WeaponDNA.GetKeyValue("ringZ1", from, to, Math1D.GetNearZeroValue(ballRadius * .75)) };
break;
case 2:
double z1 = WeaponDNA.GetKeyValue("ringZ1", from, to, Math1D.GetNearZeroValue(ballRadius * .75));
double z2 = 0;
if (from == null || !from.TryGetValue("ringZ2", out z2))
{
do
{
z2 = Math1D.GetNearZeroValue(ballRadius * .75);
} while (Math.Abs(z1 - z2) < ballRadius * .4);
to.Add("ringZ2", z2);
}
zs = new double[] { z1, z2 };
break;
default:
throw new ApplicationException("Unexpected number of rings: " + numRings.ToString());
}
// Build the rings at the z offsets that were calculated above
for (int cntr = 0; cntr < zs.Length; cntr++)
{
retVal.Children.Add(GetModel_WoodIron_Ring_Band(ballRadius, zs[cntr], material, ball, from, to, "ringZ" + cntr.ToString()));
// Store points at the rings
double ringRadiusAvg = Math.Sqrt((ballRadius * ballRadius) - (zs[cntr] * zs[cntr]));
staticPoints.AddRange(Math2D.GetCircle_Cached(7).Select(o => (o.ToVector() * ringRadiusAvg).ToVector3D(zs[cntr])));
}
#endregion
#region Spikes
Vector3D[] staticPointsArr = staticPoints.Count == 0 ? null : staticPoints.ToArray();
double[] staticRepulse = staticPoints.Count == 0 ? null : Enumerable.Range(0, staticPoints.Count).Select(o => .005d).ToArray();
int numSpikes = Convert.ToInt32(WeaponDNA.GetKeyValue("numSpikes", from, to, rand.Next(8, 14)));
Vector3D[] spikeLocations;
if (from != null && from.ContainsKey("spikeLoc0X"))
{
spikeLocations = new Vector3D[numSpikes];
for (int cntr = 0; cntr < numSpikes; cntr++)
{
string prefix = "spikeLoc" + cntr.ToString();
spikeLocations[cntr] = new Vector3D(to[prefix + "X"], to[prefix + "Y"], to[prefix + "Z"]);
}
}
else
{
spikeLocations = Math3D.GetRandomVectors_SphericalShell_EvenDist(numSpikes, ballRadius, .03, 10, null, staticPointsArr, staticRepulse);
for (int cntr = 0; cntr < numSpikes; cntr++)
{
string prefix = "spikeLoc" + cntr.ToString();
to.Add(prefix + "X", spikeLocations[cntr].X);
to.Add(prefix + "Y", spikeLocations[cntr].Y);
to.Add(prefix + "Z", spikeLocations[cntr].Z);
}
}
for (int cntr = 0; cntr < spikeLocations.Length; cntr++)
{
material = materials.Spike_Iron; // the property get returns a slightly random color
geometry = new GeometryModel3D();
geometry.Material = material;
geometry.BackMaterial = material;
RotateTransform3D transform = new RotateTransform3D(new QuaternionRotation3D(Math3D.GetRotation(new Vector3D(0, 0, 1), spikeLocations[cntr]))); // the tube builds along z
List <TubeRingBase> rings = new List <TubeRingBase>();
double spikeRadiusA = WeaponDNA.GetKeyValue("spikeRad" + cntr.ToString(), from, to, rand.NextPercent(spikeRadius, .33));
rings.Add(new TubeRingRegularPolygon(0, false, spikeRadiusA, spikeRadiusA, false));
rings.Add(new TubeRingPoint(WeaponDNA.GetKeyValue("spikeLen" + cntr.ToString(), from, to, rand.NextDouble(spikeLength * .9, spikeLength * 1.1)), false));
int numSegments = Convert.ToInt32(WeaponDNA.GetKeyValue("spikeSegs" + cntr.ToString(), from, to, rand.Next(3, 6)));
bool isSoft = Math1D.IsNearZero(WeaponDNA.GetKeyValue("spikeSoft" + cntr.ToString(), from, to, rand.Next(2)));
geometry.Geometry = UtilityWPF.GetMultiRingedTube(numSegments, rings, isSoft, false, transform);
retVal.Children.Add(geometry);
}
#endregion
return(retVal);
}
