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diff --git a/src/3dengfx/libs/lib3ds/viewport.h b/src/3dengfx/libs/lib3ds/viewport.h
new file mode 100644
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+++ b/src/3dengfx/libs/lib3ds/viewport.h
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+/* -*- c -*- */
+#ifndef INCLUDED_LIB3DS_VIEWPORT_H
+#define INCLUDED_LIB3DS_VIEWPORT_H
+/*
+ * The 3D Studio File Format Library
+ * Copyright (C) 1996-2001 by J.E. Hoffmann <je-h@gmx.net>
+ * All rights reserved.
+ *
+ * This program is  free  software;  you can redistribute it and/or modify it
+ * under the terms of the  GNU Lesser General Public License  as published by 
+ * the  Free Software Foundation;  either version 2.1 of the License,  or (at 
+ * your option) any later version.
+ *
+ * This  program  is  distributed in  the  hope that it will  be useful,  but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or  FITNESS FOR A  PARTICULAR PURPOSE.  See the  GNU Lesser General Public  
+ * License for more details.
+ *
+ * You should  have received  a copy of the GNU Lesser General Public License
+ * along with  this program;  if not, write to the  Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: viewport.h,v 1.6 2004/12/31 16:17:15 reed Exp $
+ */
+
+#ifndef INCLUDED_LIB3DS_TYPES_H
+#include <lib3ds/types.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*!
+ * Layout view types
+ * \ingroup viewport
+ */
+typedef enum _Lib3dsViewType {
+  LIB3DS_VIEW_TYPE_NOT_USED  =0,
+  LIB3DS_VIEW_TYPE_TOP       =1,
+  LIB3DS_VIEW_TYPE_BOTTOM    =2,
+  LIB3DS_VIEW_TYPE_LEFT      =3,
+  LIB3DS_VIEW_TYPE_RIGHT     =4,
+  LIB3DS_VIEW_TYPE_FRONT     =5,
+  LIB3DS_VIEW_TYPE_BACK      =6,
+  LIB3DS_VIEW_TYPE_USER      =7,
+  LIB3DS_VIEW_TYPE_SPOTLIGHT =18,
+  LIB3DS_VIEW_TYPE_CAMERA    =65535
+} Lib3dsViewType;
+
+/*!
+ * Layout view settings
+ * \ingroup viewport
+ */
+typedef struct _Lib3dsView {
+    Lib3dsWord type;
+    Lib3dsWord axis_lock;
+    Lib3dsIntw position[2];
+    Lib3dsIntw size[2];
+    Lib3dsFloat zoom;
+    Lib3dsVector center;
+    Lib3dsFloat horiz_angle;
+    Lib3dsFloat vert_angle;
+    char camera[11];
+} Lib3dsView;
+
+/*!
+ * Layout styles
+ * \ingroup viewport
+ */
+typedef enum _Lib3dsLayoutStyle {
+  LIB3DS_LAYOUT_SINGLE                  =0,
+  LIB3DS_LAYOUT_TWO_PANE_VERT_SPLIT     =1,
+  LIB3DS_LAYOUT_TWO_PANE_HORIZ_SPLIT    =2,
+  LIB3DS_LAYOUT_FOUR_PANE               =3,
+  LIB3DS_LAYOUT_THREE_PANE_LEFT_SPLIT   =4,
+  LIB3DS_LAYOUT_THREE_PANE_BOTTOM_SPLIT =5,
+  LIB3DS_LAYOUT_THREE_PANE_RIGHT_SPLIT  =6,
+  LIB3DS_LAYOUT_THREE_PANE_TOP_SPLIT    =7,
+  LIB3DS_LAYOUT_THREE_PANE_VERT_SPLIT   =8,
+  LIB3DS_LAYOUT_THREE_PANE_HORIZ_SPLIT  =9,
+  LIB3DS_LAYOUT_FOUR_PANE_LEFT_SPLIT    =10,
+  LIB3DS_LAYOUT_FOUR_PANE_RIGHT_SPLIT   =11
+} Lib3dsLayoutStyle;
+
+/*!
+ * Viewport layout settings
+ * \ingroup viewport
+ */
+typedef struct _Lib3dsLayout {
+    Lib3dsWord style;
+    Lib3dsIntw active;
+    Lib3dsIntw swap;
+    Lib3dsIntw swap_prior;
+    Lib3dsIntw swap_view;
+    Lib3dsWord position[2];
+    Lib3dsWord size[2];
+    Lib3dsDword views;
+    Lib3dsView *viewL;
+} Lib3dsLayout;
+
+/*!
+ * Default view settings
+ * \ingroup viewport
+ */
+typedef struct _Lib3dsDefaultView {
+    Lib3dsWord type;
+    Lib3dsVector position;
+    Lib3dsFloat width;
+    Lib3dsFloat horiz_angle;
+    Lib3dsFloat vert_angle;
+    Lib3dsFloat roll_angle;
+    char camera[64];
+} Lib3dsDefaultView;
+
+/*!
+ * Viewport and default view settings
+ * \ingroup viewport
+ */
+struct _Lib3dsViewport {
+    Lib3dsLayout layout;
+    Lib3dsDefaultView default_view;
+};
+
+extern LIB3DSAPI Lib3dsBool lib3ds_viewport_read(Lib3dsViewport *viewport, Lib3dsIo *io);
+extern LIB3DSAPI void lib3ds_viewport_set_views(Lib3dsViewport *viewport, Lib3dsDword views);
+extern LIB3DSAPI Lib3dsBool lib3ds_viewport_write(Lib3dsViewport *viewport, Lib3dsIo *io);
+extern LIB3DSAPI void lib3ds_viewport_dump(Lib3dsViewport *viewport);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+
+
+