void Select(ScreenCoordinateSelectEvent selectEvent)
{
var window = Resolve <IWindowManager>();
var normPosition = window.PixelToNorm(selectEvent.Position);
var uiPosition = window.NormToUi(normPosition);
var newSelection = new List <IUiElement>();
DoLayout((extents, dialogOrder, element) =>
element.Select(uiPosition, extents, dialogOrder, (order, target) =>
{
float z = 1.0f - order / (float)DrawLayer.MaxLayer;
var intersectionPoint = new Vector3(normPosition, z);
selectEvent.RegisterHit(z, new Selection(intersectionPoint, target));
if (target is IUiElement subElement)
{
newSelection.Add(subElement);
}
}));
var focused = newSelection.Except(_lastSelection);
var blurred = _lastSelection.Except(newSelection);
_lastSelection = newSelection;
Raise(new UiSelectedEvent(newSelection, focused, blurred));
}
void TransformSelect(ScreenCoordinateSelectEvent e)
{
var totalMatrix = ViewMatrix * ProjectionMatrix;
var inverse = totalMatrix.Inverse();
var normalisedScreenPosition = new Vector3(2 * e.Position.X / _windowSize.X - 1.0f, -2 * e.Position.Y / _windowSize.Y + 1.0f, 0.0f);
var rayOrigin = Vector3.Transform(normalisedScreenPosition + Vector3.UnitZ, inverse);
var rayDirection = Vector3.Transform(normalisedScreenPosition, inverse) - rayOrigin;
rayOrigin = new Vector3(rayOrigin.X, rayOrigin.Y, rayOrigin.Z);
Raise(new WorldCoordinateSelectEvent(rayOrigin, rayDirection, e.RegisterHit));
}
bool Select(ScreenCoordinateSelectEvent selectEvent, Action <Selection> continuation)
{
var window = Resolve <IWindowManager>();
var normPosition = window.PixelToNorm(selectEvent.Position);
var uiPosition = window.NormToUi(normPosition);
DoLayout((extents, dialogOrder, element) =>
element.Select(uiPosition, extents, dialogOrder, (order, target) =>
{
float z = 1.0f - order / (float)DrawLayer.MaxLayer;
var intersectionPoint = new Vector3(normPosition, z);
continuation(new Selection(intersectionPoint, z, target));
}));
return(true);
}
