/// <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="e">The click event</param>
protected override void MouseDown3D(Viewport3D viewport, ViewportEvent e)
{
// Do not perform selection if space is down
if (KeyboardState.IsKeyDown(Keys.Space)) return;
// First, get the ray that is cast from the clicked point along the viewport frustrum
var ray = viewport.CastRayFromScreen(e.X, e.Y);
// Grab all the elements that intersect with the ray
var hits = Document.Map.WorldSpawn.GetAllNodesIntersectingWith(ray);
// Sort the list of intersecting elements by distance from ray origin
IntersectingObjectsFor3DSelection = hits
.Select(x => new { Item = x, Intersection = x.GetIntersectionPoint(ray) })
.Where(x => x.Intersection != null)
.OrderBy(x => (x.Intersection - ray.Start).VectorMagnitude())
.Select(x => x.Item)
.ToList();
// By default, select the closest object
ChosenItemFor3DSelection = IntersectingObjectsFor3DSelection.FirstOrDefault();
// If Ctrl is down and the object is already selected, we should deselect it instead.
var list = new[] {ChosenItemFor3DSelection};
var desel = ChosenItemFor3DSelection != null && KeyboardState.Ctrl && ChosenItemFor3DSelection.IsSelected;
SetSelected(desel ? list : null, desel ? null : list, !KeyboardState.Ctrl, IgnoreGrouping());
State.ActiveViewport = null;
}
private void MouseDown(Viewport3D vp, ViewportEvent e)
{
if (!_currentTool.NoSelection())
{
var vtxs = _currentTool.GetVerticesAtPoint(e.X, vp.Height - e.Y, vp);
if (vtxs.Any())
{
// Use the topmost vertex as the control point
var vtx = vtxs.First();
// Mouse down on a point
if (vtx.IsSelected && KeyboardState.Ctrl && _currentTool.ShouldDeselect(vtxs))
{
// If the vertex is selected and ctrl is down, deselect the vertices
vtxs.ForEach(x => x.IsSelected = false);
}
else
{
if (!vtx.IsSelected && !KeyboardState.Ctrl && _currentTool.ShouldDeselect(vtxs))
{
// If we aren't clicking on a selected point and ctrl is not down, deselect the others
Points.ForEach(x => x.IsSelected = false);
// If this point is already selected, don't deselect others. This is the same behaviour as 2D selection.
}
vtxs.ForEach(x => x.IsSelected = true);
}
VertexSelectionChanged();
// Don't do other click operations
return;
}
// Nothing clicked
if (!KeyboardState.Ctrl)
{
// Deselect all the points if not ctrl-ing
Points.ForEach(x => x.IsSelected = false);
}
}
if (!_currentTool.No3DSelection())
{
// Do selection
var ray = vp.CastRayFromScreen(e.X, e.Y);
var hits = Document.Map.WorldSpawn.GetAllNodesIntersectingWith(ray, true);
var solid = hits
.OfType<Solid>()
.Select(x => new { Item = x, Intersection = x.GetIntersectionPoint(ray) })
.Where(x => x.Intersection != null)
.OrderBy(x => (x.Intersection - ray.Start).VectorMagnitude())
.Select(x => x.Item)
.FirstOrDefault();
if (solid != null)
{
if (solid.IsSelected && KeyboardState.Ctrl)
{
// deselect solid
var select = new MapObject[0];
var deselect = new[] {solid};
Document.PerformAction("Deselect VM solid", new ChangeSelection(select, deselect));
}
else if (!solid.IsSelected)
{
// select solid
var select = new[] {solid};
var deselect = !KeyboardState.Ctrl ? Document.Selection.GetSelectedObjects() : new MapObject[0];
Document.PerformAction("Select VM solid", new ChangeSelection(select, deselect));
}
// Don't do other click operations
return;
}
}
base.MouseDown(vp, e);
}
private void UpdateCurrentFace(Viewport3D viewport, ViewportEvent e)
{
var ray = viewport.CastRayFromScreen(e.X, e.Y);
// The face doesn't change when drawing, just update the intersection
if (_state == SketchState.DrawingBase || _state == SketchState.DrawingVolume)
{
_intersection = (_state == SketchState.DrawingBase ? _currentFace.Plane : _volumePlane).GetIntersectionPoint(ray, true, true);
return;
}
var isect = Document.Map.WorldSpawn.GetAllNodesIntersectingWith(ray)
.OfType<Solid>()
.SelectMany(x => x.Faces)
.Select(x => new { Item = x, Intersection = x.GetIntersectionPoint(ray) })
.Where(x => x.Intersection != null)
.OrderBy(x => (x.Intersection - ray.Start).VectorMagnitude())
.FirstOrDefault();
if (isect != null)
{
if (_currentFace != isect.Item)
{
_cloneFace = isect.Item.Clone();
_cloneFace.Transform(new UnitTranslate(isect.Item.Plane.Normal * 0.1m), TransformFlags.None);
}
_currentFace = isect.Item;
_intersection = isect.Intersection;
_state = SketchState.Ready;
}
else
{
_cloneFace = null;
_currentFace = null;
_intersection = null;
_state = SketchState.None;
}
}
private void MouseDown(Viewport3D vp, ViewportEvent e)
{
if (vp == null || e.Button != MouseButtons.Left) return;
// Get the ray that is cast from the clicked point along the viewport frustrum
var ray = vp.CastRayFromScreen(e.X, e.Y);
// Grab all the elements that intersect with the ray
var hits = Document.Map.WorldSpawn.GetAllNodesIntersectingWith(ray);
// Sort the list of intersecting elements by distance from ray origin and grab the first hit
var hit = hits
.Select(x => new { Item = x, Intersection = x.GetIntersectionPoint(ray) })
.Where(x => x.Intersection != null)
.OrderBy(x => (x.Intersection - ray.Start).VectorMagnitude())
.FirstOrDefault();
if (hit == null) return; // Nothing was clicked
CreateEntity(hit.Intersection);
}