protected override void OnSceneChanged()
{
base.OnSceneChanged();
if (this.mouseoverObject != null && this.mouseoverObject.IsInvalid)
{
this.mouseoverObject = null;
}
}
protected override void OnMouseLeave(EventArgs e)
{
base.OnMouseLeave(e);
this.mouseoverAction = ObjectEditorAction.None;
this.mouseoverObject = null;
this.mouseoverSelect = false;
}
protected void UpdateMouseover(Point mouseLoc)
{
bool lastMouseoverSelect = this.mouseoverSelect;
ObjectEditorSelObj lastMouseoverObject = this.mouseoverObject;
ObjectEditorAction lastMouseoverAction = this.mouseoverAction;
if (this.actionAllowed && !this.CamActionRequiresCursor && this.CamAction == CameraAction.None)
{
this.ValidateSelectionStats();
// Determine object at mouse position
this.mouseoverObject = this.PickSelObjAt(mouseLoc.X, mouseLoc.Y);
// Determine action variables
Vector3 mouseSpaceCoord = this.GetSpaceCoord(new Vector3(mouseLoc.X, mouseLoc.Y, this.selectionCenter.Z));
float scale = this.GetScaleAtZ(this.selectionCenter.Z);
const float boundaryThickness = 10.0f;
bool tooSmall = this.selectionRadius * scale <= boundaryThickness * 2.0f;
bool mouseOverBoundary = MathF.Abs((mouseSpaceCoord - this.selectionCenter).Length - this.selectionRadius) * scale < boundaryThickness;
bool mouseInsideBoundary = !mouseOverBoundary && (mouseSpaceCoord - this.selectionCenter).Length < this.selectionRadius;
bool mouseAtCenterAxis =
MathF.Abs(mouseSpaceCoord.X - this.selectionCenter.X) * scale < boundaryThickness ||
MathF.Abs(mouseSpaceCoord.Y - this.selectionCenter.Y) * scale < boundaryThickness;
bool shift = (Control.ModifierKeys & Keys.Shift) != Keys.None;
bool ctrl = (Control.ModifierKeys & Keys.Control) != Keys.None;
bool anySelection = this.actionObjSel.Count > 0;
bool canMove = this.actionObjSel.Any(s => s.IsActionAvailable(ObjectEditorAction.Move));
bool canRotate = (canMove && this.actionObjSel.Count > 1) || this.actionObjSel.Any(s => s.IsActionAvailable(ObjectEditorAction.Rotate));
bool canScale = (canMove && this.actionObjSel.Count > 1) || this.actionObjSel.Any(s => s.IsActionAvailable(ObjectEditorAction.Scale));
// Select which action to propose
this.mouseoverSelect = false;
if (ctrl)
{
this.mouseoverAction = ObjectEditorAction.RectSelect;
}
else if (anySelection && !tooSmall && mouseOverBoundary && mouseAtCenterAxis && this.selectionRadius > 0.0f && canScale)
{
this.mouseoverAction = ObjectEditorAction.Scale;
}
else if (anySelection && !tooSmall && mouseOverBoundary && canRotate)
{
this.mouseoverAction = ObjectEditorAction.Rotate;
}
else if (anySelection && mouseInsideBoundary && canMove)
{
this.mouseoverAction = ObjectEditorAction.Move;
}
else if (shift) // Lower prio than Ctrl, because Shift also modifies mouse actions
{
this.mouseoverAction = ObjectEditorAction.RectSelect;
}
else if (this.mouseoverObject != null && this.mouseoverObject.IsActionAvailable(ObjectEditorAction.Move))
{
this.mouseoverAction = ObjectEditorAction.Move;
this.mouseoverSelect = true;
}
else
{
this.mouseoverAction = ObjectEditorAction.RectSelect;
}
}
else
{
this.mouseoverObject = null;
this.mouseoverSelect = false;
this.mouseoverAction = ObjectEditorAction.None;
}
// If mouseover changed..
if (this.mouseoverObject != lastMouseoverObject ||
this.mouseoverSelect != lastMouseoverSelect ||
this.mouseoverAction != lastMouseoverAction)
{
// Adjust mouse cursor based on proposed action
if (this.mouseoverAction == ObjectEditorAction.Move)
{
this.Cursor = CursorHelper.ArrowActionMove;
}
else if (this.mouseoverAction == ObjectEditorAction.Rotate)
{
this.Cursor = CursorHelper.ArrowActionRotate;
}
else if (this.mouseoverAction == ObjectEditorAction.Scale)
{
this.Cursor = CursorHelper.ArrowActionScale;
}
else
{
this.Cursor = CursorHelper.Arrow;
}
}
// Redraw if action gizmos might be visible
if (this.actionAllowed)
{
this.Invalidate();
}
}