private static void UpdateDrag(ref PCad.InteractionState interactionState, ref SketchModel sketchModel)
{
var(value, pointsInNegativeDirection) = CoordinateManipulation.UpdateDrag(
interactionState.draggedCoordinate,
sketchModel.coordinateSystem.AxisThatContainsCoordinate(interactionState.draggedCoordinate));
interactionState.draggedCoordinate.Parameter.Value = value;
//quick fix: for now, only mue coordinates can be dragged
((Mue)interactionState.draggedCoordinate).PointsInNegativeDirection =
pointsInNegativeDirection;
}
private static void UpdateHoveredCoordinate(ref PCad.InteractionState interactionState,
CoordinateSystemUI coordinateSystemUI)
{
interactionState.hoveredCoordinate =
CoordinateManipulation.TryGetCoordinateAtPosition(coordinateSystemUI);
if (interactionState.hoveredCoordinate.HasValue &&
!(interactionState.hoveredCoordinate.Value.coordinate is Mue))
{
// quick fix: only mue coordinates can be transformed
interactionState.hoveredCoordinate = null;
}
}
public static void CleanUpFocusPosition(ref PCad.InteractionState interactionState)
{
if (interactionState.focusPosition == null)
{
return;
}
interactionState.focusPosition.ForEach(c =>
{
if (c.IsCurrentlyDrawn)
{
c.Delete();
}
});
interactionState.focusPosition = null;
}
public static void CleanUpIncompleteGeometry(ref PCad.InteractionState interactionState,
ref SketchModel sketchModel)
{
if (interactionState.incompleteGeometry == null)
{
return;
}
var incompleteGeometry = interactionState.incompleteGeometry;
interactionState.incompleteGeometry.P0.ForEach(c =>
c.UnregisterGeometryAndTryToDelete(incompleteGeometry));
sketchModel.geometries.Remove(interactionState.incompleteGeometry);
interactionState.incompleteGeometry = null;
}
public static void Update(ref PCad.InteractionState interactionState, ref SketchModel sketchModel,
CoordinateSystemUI coordinateSystemUI, bool isMouseOnDrawArea, Action saveToHistory)
{
UpdateHoveredCoordinate(ref interactionState, coordinateSystemUI);
switch (interactionState.CurrentMouseState)
{
case MouseInput.MouseState.None:
case MouseInput.MouseState.SetAnchorDown:
case MouseInput.MouseState.DeleteDown:
break;
case MouseInput.MouseState.PrimaryDown:
if (interactionState.hoveredCoordinate.HasValue && isMouseOnDrawArea)
{
StartDrag(ref interactionState, coordinateSystemUI);
}
break;
case MouseInput.MouseState.PrimaryHold:
if (interactionState.draggedCoordinate != null)
{
UpdateDrag(ref interactionState, ref sketchModel);
}
break;
case MouseInput.MouseState.PrimaryUp:
if (interactionState.draggedCoordinate != null)
{
saveToHistory();
interactionState.draggedCoordinate = null;
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}
private static void StartDrag(ref PCad.InteractionState interactionState,
CoordinateSystemUI coordinateSystemUI)
{
interactionState.draggedCoordinate = interactionState.hoveredCoordinate.Value.coordinate;
CoordinateManipulation.TryGetCoordinateAtPosition(coordinateSystemUI);
}