public override void TouchesEnded(NSSet touches, UIEvent evt)
{
base.TouchesEnded(touches, evt);
if (touches.AnyObject is UITouch touch)
{
var point = touch.LocationInView(SceneView);
var hitTestOptions = new SCNHitTestOptions();
var hits = SceneView.HitTest(point, hitTestOptions);
var hit = hits.FirstOrDefault();
if (hit == null)
{
return;
}
var node = hit.Node;
if (node == null)
{
return;
}
var redMaterial = new SCNMaterial();
redMaterial.Diffuse.Contents = UIColor.Purple;
node.Geometry.Materials = new SCNMaterial[] { redMaterial };
}
}
public override void TouchesEnded(NSSet touches, UIEvent evt)
{
//TODO 2.2 Interactuando con elementos de pantalla
base.TouchesEnded(touches, evt);
if (touches.AnyObject is UITouch touch)
{
CGPoint point = touch.LocationInView(this.sceneView);
SCNHitTestOptions hitTestOptions = new SCNHitTestOptions();
SCNHitTestResult[] hits = sceneView.HitTest(point, hitTestOptions);
SCNHitTestResult hit = hits.FirstOrDefault();
if (hit == null)
{
return;
}
SCNNode node = hit.Node;
if (node == null)
{
return;
}
node.RemoveFromParentNode();
}
}
// Hit tests against the `sceneView` to find an object at the provided point.
protected VirtualObject VirtualObjectAt(CGPoint loc)
{
var hitTestOptions = new SCNHitTestOptions {
BoundingBoxOnly = true
};
var hitTestResults = SceneView.HitTest(loc, hitTestOptions);
if (hitTestResults.Count() == 0)
{
return(null);
}
var firstNodeHit = hitTestResults.First((result) => VirtualObject.IsNodePartOfVirtualObject(result.Node));
var voNode = VirtualObject.ForChildNode(firstNodeHit.Node);
return(voNode);
}
public static SCNHitTestResult[] HitTest(ISCNSceneRenderer This, CGPoint thePoint, SCNHitTestOptions options)
{
return This.HitTest (thePoint, options == null ? null : options.Dictionary);
}
public void DidBeginContact (SCNPhysicsWorld world, SCNPhysicsContact contact)
{
SCNNode ball;
if (contact.NodeA.PhysicsBody.Type == SCNPhysicsBodyType.Dynamic) {
ball = contact.NodeA;
} else {
ball = contact.NodeB;
}
if (ball != null) {
DispatchQueue.MainQueue.DispatchAsync (ball.RemoveFromParentNode);
var plokCopy = (SCNParticleSystem)Plok.Copy ();
plokCopy.ParticleImage = Plok.ParticleImage; // to workaround an bug in seed #1
plokCopy.ParticleColor = (SKColor)ball.Geometry.FirstMaterial.Diffuse.Contents;
Scene.AddParticleSystem (plokCopy, SCNMatrix4.CreateTranslation (contact.ContactPoint.X, contact.ContactPoint.Y, contact.ContactPoint.Z));
//compute texture coordinate
var pointA = new SCNVector3 (contact.ContactPoint.X, contact.ContactPoint.Y, contact.ContactPoint.Z + 20);
var pointB = new SCNVector3 (contact.ContactPoint.X, contact.ContactPoint.Y, contact.ContactPoint.Z - 20);
var hitTestOptions = new SCNHitTestOptions (NSDictionary.FromObjectAndKey (Torus, SCNHitTest.RootNodeKey));
var results = SceneView.Scene.RootNode.HitTest (pointA, pointB, hitTestOptions);
if (results.Length > 0) {
var hit = results [0];
AddPaint (hit.GetTextureCoordinatesWithMappingChannel (0), plokCopy.ParticleColor);
}
}
}
public static SCNHitTestResult[] HitTest(ISCNSceneRenderer This, CGPoint thePoint, SCNHitTestOptions options)
{
return(This.HitTest(thePoint, options == null ? null : options.Dictionary));
}
