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  man pages->IRIX man pages -> Inventor/gview (1)              



NAME    [Toc]    [Back]

     gview - graph viewer for Inventor 3d databases

SYNOPSIS    [Toc]    [Back]

     gview [file | < file]

DESCRIPTION    [Toc]    [Back]

     gview is a	program	for viewing, editing, and learning about Inventor 3d
     scene graphs.  There are two views	of the Inventor	scene graph: a 3d
     rendered view (left) and a	scene graph view (right).  The 3d rendered
     view displays the data in an examiner viewer and allows selection as well
     as	viewing.  The scene graph view renders the scene database as a
     directed acyclic graph illustrating the structure and relationships
     within the	database.  This	view is	displayed in a GraphViewer component,
     which is derived from the Inventor	plane viewer. Each node	in the graph
     is	represented by a 3D icon.

     If	you select an object in	one view, it will be highlighted in both
     views.  This is a very interesting	way to learn about Inventor scene
     databases.	 You can create	new objects, edit the values of	objects, and
     rearrange the structure of	the database by	cutting	and pasting.  (See the
     descriptions of the menu items for	details.)

     This program is especially	useful for Inventor programmers	who want to
     analyze a specific	database or who	wish to	experiment with	Inventor
     features and visualize the	database at the	same time.

GVIEW MENU    [Toc]    [Back]

     The top bar contains the following	three items under the gview menu:

     Save in gview.iv
	  Saves	the Inventor scene (as displayed in the	examiner viewer) in
	  the file gview.iv.

     Save display graph	in disp.iv
	  Saves	the scene representing the graph (as displayed in the graph
	  viewer) in the file disp.iv.

	  The usual.

GRAPH VIEWER MENU    [Toc]    [Back]

     The top bar in the	right-hand graph viewer	window contains	the following

	  This menu contains an	Update button that updates the graph view
	  based	on changes made	to the scene graph.  (This is useful only if
	  the GraphViewer component is used in some application	that can
	  modify the structure of the original scene graph; the	GraphViewer
	  does not update based	on changes to this scene graph,	since that
	  would	be too expensive.)

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GVIEW(1)    [Toc]    [Back]

	  This menu enables cutting, copying, pasting, and duplicating the
	  selected node	in the scene graph. When pasting (or duplicating,
	  which	is copying and pasting in one operation), you have a choice of
	  pasting a copy of the	node or	a reference to (instance of) it.
	  Feedback appears to indicate where the copy or instance will be

	  This menu allows you to change easily	which node is selected.

	  This menu allows you to hide or show nodes under a group node. If a
	  group	node is	selected, the Open button displays the immediate
	  children of the group, while Open All	displays all descendants.
	  Close	hides all descendants, and Toggle toggles between the open and
	  closed states.

	  When a node is the child of more than	one parent, each instance
	  after	the first is displayed as an instance icon (a letter "I" in
	  the default icons). When an instance icon is selected, the Toggle
	  button in this menu toggles the display of a line that connects the
	  instance icon	to the node it is an instance of. The Swap button
	  exchanges the	instance icon with this	other node. (This can be
	  useful to examine nodes under	an instance of a group node.)

	  The Create button in this menu brings	up a NodeCreator widget	that
	  allows you to	create a new instance of any built-in Inventor node
	  class. Once a	type is	selected or typed in, feedback appears in the
	  GraphViewer to help you place	the new	node in	the graph. The Edit
	  Fields button	brings up a FieldEditor	widget that allows you to edit
	  the values of	fields in a selected node.

SHORTCUTS    [Toc]    [Back]

     Each menu button has a corresponding keyboard shortcut displayed in the
     pull-down menu.  Double-clicking on a node	icon initiates a common	action
     for that type of node. For	a group, it is equivalent to the Group Toggle
     button.  For an instance, it is equivalent	to the Inst Toggle button.
     For any other node, it is equivalent to the Node Edit Fields button.

ICONS    [Toc]    [Back]

     The 3D icons used to represent nodes in the scene graph are read from a
     file called gviewIcons.iv.	 This file is searched for in (in order)
     directories specified in the IV_GRAPH_DIR environment variable, the
     current directory,	and the	usual place this file gets installed (See the
     FILES section).

     Each icon in this file is represented by a	subgraph (rooted by a
     separator)	whose first N children are label nodes;	each of	the label
     nodes defines one node type to be represented by that subgraph. Icons

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     follow the	node hierarchy;	that is, the icon representing a group is used
     for all group nodes that don't have explicitly different icons.

     The default icon set is chosen to be similar to the icons used in the
     Inventor documentation.

SOURCE CODE    [Toc]    [Back]

     Note that the source code to gview	comes with the Open Inventor 3d

FILES    [Toc]    [Back]

     /usr/share/data/models/* -	Sample 3D data files
     /usr/share/src/Inventor/demos/gview/* - Source to gview
     /usr/demos/data/Inventor/gviewIcons.iv - Default icon file

SEE ALSO    [Toc]    [Back]

     SceneViewer, drop,	inventor, ivcat, ivview, noodle, showcase, revo,

Page 3				 Release 6.5			   August 1991
[ Back ]
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