private double?GetClickDistanceNearSwarm(RayHitTestParameters clickRay)
{
SwarmCluster[] clusters = _botClusters.Clusters;
if (clusters == null || clusters.Length == 0)
{
return(null);
}
Point3D?closestPoint = null;
double minDist = double.MaxValue;
foreach (SwarmCluster cluster in clusters)
{
SwarmClusterInfo clusterInfo = cluster.GetCurrentInfo();
Point3D closest = Math3D.GetClosestPoint_Line_Point(clickRay.Origin, clickRay.Direction, clusterInfo.Center);
if (Vector3D.DotProduct(closest - clickRay.Origin, clickRay.Direction) < 0)
{
// It's behind the camera
continue;
}
double lenSqr = (clusterInfo.Center - closest).LengthSquared;
if (lenSqr < minDist)
{
minDist = lenSqr;
closestPoint = closest;
}
}
if (closestPoint == null)
{
return(null);
}
else if (Math.Sqrt(minDist) > BOUNDRYSIZE / 4)
{
return(null);
}
return((closestPoint.Value - clickRay.Origin).Length);
}
private static Tuple <Visual3D, Tuple <TranslateTransform3D, ScaleTransform3D, BillboardLine3D>[]> CreateVisual(SwarmCluster[] clusters, bool showVelocity)
{
Model3DGroup models = new Model3DGroup();
// Hull Material
MaterialGroup materials = new MaterialGroup();
materials.Children.Add(new DiffuseMaterial(new SolidColorBrush(UtilityWPF.ColorFromHex("10FFFFFF"))));
materials.Children.Add(new SpecularMaterial(new SolidColorBrush(UtilityWPF.ColorFromHex("18FFFFFF")), 4));
var transforms = new Tuple <TranslateTransform3D, ScaleTransform3D, BillboardLine3D> [clusters.Length];
for (int cntr = 0; cntr < clusters.Length; cntr++)
{
SwarmClusterInfo clusterInfo = clusters[cntr].GetCurrentInfo();
#region velocity
BillboardLine3D velocity = null;
if (showVelocity)
{
velocity = new BillboardLine3D()
{
Color = UtilityWPF.ColorFromHex("20FFFFFF"),
IsReflectiveColor = false,
Thickness = .2,
};
velocity.SetPoints(clusterInfo.Center, clusterInfo.Center + clusterInfo.Velocity);
models.Children.Add(velocity.Model);
}
#endregion
#region hull
// Model
GeometryModel3D hull = new GeometryModel3D();
hull.Material = materials;
hull.BackMaterial = materials;
hull.Geometry = UtilityWPF.GetSphere_Ico(1d, 2, true);
// Transform
Transform3DGroup transformGroup = new Transform3DGroup();
ScaleTransform3D scale = new ScaleTransform3D(clusterInfo.Radius, clusterInfo.Radius, clusterInfo.Radius);
transformGroup.Children.Add(scale);
TranslateTransform3D translate = new TranslateTransform3D(clusterInfo.Center.ToVector());
transformGroup.Children.Add(translate);
hull.Transform = transformGroup;
models.Children.Add(hull);
#endregion
transforms[cntr] = Tuple.Create(translate, scale, velocity);
}
ModelVisual3D visual = new ModelVisual3D();
visual.Content = models;
return(Tuple.Create((Visual3D)visual, transforms));
}