public static void ZoomToExtents(this Database database)
{
using (DBObject dbObj = GetActiveViewportId(database).GetObject(OpenMode.ForWrite))
{
// using protocol extensions we handle PS and MS viewports in the same manner
using (AbstractViewportData viewportData = new AbstractViewportData(dbObj))
{
using (Teigha.GraphicsSystem.View view = viewportData.GsView)
{
// do actual zooming - change GS view
using (AbstractViewPE viewPE = new AbstractViewPE(view))
{
BoundBlock3d boundBlock = new BoundBlock3d();
bool bBboxValid = viewPE.GetViewExtents(boundBlock);
// paper space overall view
if (dbObj is Viewport && ((Viewport)dbObj).Number == 1)
{
if (!bBboxValid || !(boundBlock.GetMinimumPoint().X < boundBlock.GetMaximumPoint().X&& boundBlock.GetMinimumPoint().Y < boundBlock.GetMaximumPoint().Y))
{
bBboxValid = GetLayoutExtents(database, view, ref boundBlock);
}
}
else if (!bBboxValid) // model space viewport
{
bBboxValid = GetLayoutExtents(database, view, ref boundBlock);
}
if (!bBboxValid)
{
// set to somewhat reasonable (e.g. paper size)
if (database.Measurement == MeasurementValue.Metric)
{
boundBlock.Set(Point3d.Origin, new Point3d(297.0, 210.0, 0.0)); // set to papersize ISO A4 (portrait)
}
else
{
boundBlock.Set(Point3d.Origin, new Point3d(11.0, 8.5, 0.0)); // ANSI A (8.50 x 11.00) (landscape)
}
boundBlock.TransformBy(view.ViewingMatrix);
}
viewPE.ZoomExtents(boundBlock);
boundBlock.Dispose();
}
// save changes to database
viewportData.SetView(view);
}
}
}
}
