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Set a CPlane to a View

Demonstrates how to set the construction plane in the active viewport parallel to the view.

C/C++

CRhinoCommand::result CCommandTest::RunCommand(
        const CRhinoCommandContext& context )
{
  CRhinoCommand::result rc = CRhinoCommand::cancel;

  // Get the active view object
  CRhinoView* view = ::RhinoApp().ActiveView();
  if( view )
  {
    // Get reference to the view's viewport object
    CRhinoViewport& vp = view->Viewport();
    // Create plane object based on viewport parameters
    ON_Plane plane( vp.Target(), vp.VP().CameraX(), vp.VP().CameraY() );
    // Copy viewport's cplane object
    ON_3dmConstructionPlane cplane = vp.ConstructionPlane();
    // Set the cplane's plane object
    cplane.m_plane = plane;
    // Push the new cplane onto the cplane stack
    view->Viewport().PushConstructionPlane( cplane );
    // Redraw the view
    view->Redraw();
    rc = CRhinoCommand::success;
  }
  return rc;
}