/// <summary>
/// When the mouse is pressed in the 3D view, we want to select the clicked object.
/// </summary>
/// <param name="viewport">The viewport that was clicked</param>
/// <param name="camera"></param>
/// <param name="e">The click event</param>
protected override void MouseDown(MapViewport viewport, PerspectiveCamera camera, ViewportEvent e)
{
// First, get the ray that is cast from the clicked point along the viewport frustrum
var(start, end) = camera.CastRayFromScreen(new Vector3(e.X, e.Y, 0));
var ray = new Line(start, end);
// Grab all the elements that intersect with the ray
var closestObject = Document.Map.Root.GetIntersectionsForVisibleObjects(ray)
.Where(x => x.Object is Solid)
.Select(x => (Solid)x.Object)
.FirstOrDefault();
SelectObject(closestObject);
}
protected override void MouseDown(MapDocument document, MapViewport viewport, PerspectiveCamera camera,
ViewportEvent e)
{
if (e.Button != MouseButtons.Left)
{
return;
}
e.Handled = true;
// First, get the ray that is cast from the clicked point along the viewport frustrum
var(start, end) = camera.CastRayFromScreen(new Vector3(e.X, e.Y, 0));
var ray = new Line(start, end);
// Grab all the elements that intersect with the ray
var hits = Selection.Where(x => x.Copy.BoundingBox.IntersectsWith(ray));
// Sort the list of intersecting elements by distance from ray origin
var clickedFace = hits
.SelectMany(x => x.Copy.Faces.Select(f => new { Solid = x, Face = f }))
.Select(x => new { Item = x, Intersection = GetIntersectionPoint(x.Face, ray) })
.Where(x => x.Intersection != null)
.OrderBy(x => (x.Intersection.Value - ray.Start).Length())
.Select(x => x.Item)
.FirstOrDefault();
var faces = new List <SolidFace>();
if (clickedFace != null)
{
if (KeyboardState.Shift)
{
faces.AddRange(clickedFace.Solid.Copy.Faces.Select(x => new SolidFace(clickedFace.Solid, x)));
}
else
{
faces.Add(new SolidFace(clickedFace.Solid, clickedFace.Face));
}
}
if (!KeyboardState.Ctrl)
{
ClearSelection();
}
_selectedFaces.AddRange(faces);
Invalidate();
}
// 3D interaction
protected override void MouseDown(MapDocument document, MapViewport viewport, PerspectiveCamera camera, ViewportEvent e)
{
if (e.Button != MouseButtons.Left)
{
return;
}
// Get the ray that is cast from the clicked point along the viewport frustrum
var(rs, re) = camera.CastRayFromScreen(new Vector3(e.X, e.Y, 0));
var ray = new Line(rs, re);
// Grab all the elements that intersect with the ray
var hit = document.Map.Root.GetIntersectionsForVisibleObjects(ray).FirstOrDefault();
if (hit == null)
{
return; // Nothing was clicked
}
CreateEntity(document, hit.Intersection);
}
protected override void MouseDown(MapDocument document, MapViewport viewport, PerspectiveCamera camera, ViewportEvent e)
{
var vp = viewport;
if (vp == null || (e.Button != MouseButtons.Left && e.Button != MouseButtons.Right))
{
return;
}
var(start, end) = camera.CastRayFromScreen(new Vector3(e.X, e.Y, 0));
var ray = new Line(start, end);
var clickedFace = document.Map.Root.GetBoudingBoxIntersectionsForVisibleObjects(ray)
// We only care about solids
.OfType <Solid>()
// Specifically, their faces
.SelectMany(a => a.Faces.Select(f => new { Face = f, Solid = a }))
// Get the face intersection points and sort by distance from line start
.Select(x => new { x.Face, x.Solid, Intersection = new Polygon(x.Face.Vertices).GetIntersectionPoint(ray) })
.Where(x => x.Intersection != null)
.OrderBy(x => (x.Intersection.Value - ray.Start).Length())
// Select the closest one.
.Select(x => x)
.FirstOrDefault();
if (clickedFace == null)
{
return;
}
if (e.Button == MouseButtons.Left)
{
SelectFace(document, camera, clickedFace.Face, clickedFace.Solid);
}
else if (e.Button == MouseButtons.Right)
{
ApplyFace(document, camera, clickedFace.Face, clickedFace.Solid);
}
}
