/// <summary>
/// Raises the MouseDown event</summary>
/// <param name="e">The <see cref="System.Windows.Forms.MouseEventArgs"/> instance containing the event data</param>
protected override void OnMouseDown(MouseEventArgs e)
{
// grab focus
Focus();
// Check if we've hit a manipulator. Only control with the left mouse button so that
// right-clicks can bring up the context menu rather than hitting the manipulator.
if (CanvasControl3D.ControlScheme.IsControllingCamera(ModifierKeys, e) == false &&
e.Button == MouseButtons.Left)
{
FirstMousePoint = new Point(e.X, e.Y);
Clear();
HitRecord[] hits;
IManipulator manipulator = TestForManipulator(e.X, e.Y, out hits);
if (manipulator != null)
{
SetManipulator(manipulator, hits);
OnManipulatorStart(new ManipulatorEventArgs(manipulator));
int width = base.Width;
int height = base.Height;
float x = (float)e.X / (float)width - 0.5f;
float y = 1.0f - ((float)e.Y / (float)height) - 0.5f;
manipulator.OnHit(hits, x, y, m_pickAction, m_renderAction, Camera, m_context);
// Don't call base method if a manipulator was found. Why?
return;
}
}
base.OnMouseDown(e);
}
