public void GrabUsingMouseRect(
Rect screenSpaceGrabRect,
bool allowMultigrab
)
{
var selectables = GetSceneSelectables();
if (selectables.Count == 0)
{
return;
}
foreach (var selectable in selectables)
{
var screenSpacePosition =
ActiveRenderer.GetStandardScreenSpacePosition(
selectable.WorldPosition
);
if (!screenSpacePosition.HasValue)
{
continue;
}
if (screenSpaceGrabRect.Contains(screenSpacePosition.Value))
{
_scene.GrabObject(selectable);
}
}
}
private void UpdateManipulatorInfo()
{
var cursorScreenPos = ActiveRenderer.GetStandardScreenSpacePosition(_scene.Manipulator.Position);
var cursorViewPosInfo = cursorScreenPos.HasValue
? String.Format("Cursor screen position: ({0:0.##} ; {1:0.##})", cursorScreenPos.Value.X,
cursorScreenPos.Value.Y)
: "Cursor screen position: <Clipped>";
CursorReadableInfo = String.Format("Cursor world position: ({0:0.##} ; {1:0.##} ; {2:0.##}) {3}",
_scene.Manipulator.Position.X, _scene.Manipulator.Position.Y, _scene.Manipulator.Position.Z,
cursorViewPosInfo);
}
public void GrabUsingMouse(
Point screenSpaceClick,
bool allowMultigrab,
double limit = 0.2
)
{
var selectables = GetSceneSelectables();
if (selectables.Count == 0)
{
return;
}
ISceneSelectable closestObject = null;
var closestDistance = double.MaxValue;
foreach (var selectable in selectables)
{
var screenSpacePosition = ActiveRenderer
.GetStandardScreenSpacePosition(selectable.WorldPosition);
if (!screenSpacePosition.HasValue)
{
continue;
}
var candidateLength =
(screenSpacePosition.Value - screenSpaceClick).Length;
if (candidateLength >= closestDistance)
{
continue;
}
closestObject = selectable;
closestDistance = candidateLength;
}
if (closestObject == null || closestDistance > limit)
{
return;
}
if (allowMultigrab)
{
_scene.ToggleObjectGrab(closestObject);
}
else
{
_scene.SetObjectGrab(closestObject);
}
}