/// <summary>
/// Zoom using the mouse.
/// 'point' is a point in client rect space.
/// 'delta' is the mouse wheel scroll delta value (i.e. 120 = 1 click)
/// 'along_ray' is true if the camera should move along a ray cast through 'point'
/// Returns true if the scene requires refreshing</summary>
public bool MouseNavigateZ(PointF point, EMouseBtns btns, float delta, bool along_ray)
{
if (m_in_mouse_navigate != 0)
{
return(false);
}
using (Scope.Create(() => ++ m_in_mouse_navigate, () => -- m_in_mouse_navigate))
{
// Notify of navigating, allowing client code to make
// changes or optionally handle the mouse event.
var args = new MouseNavigateEventArgs(point, btns, delta, along_ray);
MouseNavigating?.Invoke(this, args);
if (args.Handled)
{
return(false);
}
// The mouse event wasn't handled, so forward to the window for navigation
return(View3D_MouseNavigateZ(Handle, v2.From(args.Point), args.Delta, args.AlongRay));
}
}
/// <summary>
/// Mouse navigation and/or object manipulation.
/// 'point' is a point in client space.
/// 'btns' is the state of the mouse buttons (MK_LBUTTON etc)
/// 'nav_op' is the logical navigation operation to perform.
/// 'nav_beg_or_end' should be true on mouse button down or up, and false during mouse movement
/// Returns true if the scene requires refreshing</summary>
public bool MouseNavigate(PointF point, EMouseBtns btns, ENavOp nav_op, bool nav_beg_or_end)
{
// This function is not in the CameraControls object because it is not solely used
// for camera navigation. It can also be used to manipulate objects in the scene.
if (m_in_mouse_navigate != 0)
{
return(false);
}
using (Scope.Create(() => ++ m_in_mouse_navigate, () => -- m_in_mouse_navigate))
{
// Notify of navigating, allowing client code to make
// changes or optionally handle the mouse event.
var args = new MouseNavigateEventArgs(point, btns, nav_op, nav_beg_or_end);
MouseNavigating?.Invoke(this, args);
if (args.Handled)
{
return(false);
}
// The mouse event wasn't handled, so forward to the window for navigation
return(View3D_MouseNavigate(Handle, v2.From(args.Point), args.NavOp, args.NavBegOrEnd));
}
}
