EnSight 6'x Advanced Training Part 1

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EnSight 6.xAdvanced TrainingPart 1

• Instructors
• Mike Krogh, Anders Grimsrud

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Agenda

• Introduction
• Review problem (R1)
• Extended CFD variables
• Surface restricted particles
• VRML output
• Transient data - active parts
• Macros
• Part copies/extracts
• Auxiliary clipping plane
• Multiple cases

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Expectations

• Assuming basic EnSight skills
• Concentrate on some of the more complex features
  of EnSight
• Hands on approach
• Varied pace
• Loose agenda - driven somewhat by class input

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Review

• Work through Problem R1

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Extended CFD Variables

• If your data has variables for density, energy,
  and momentum/velocity, then the variable list can
  be extended to show additional computed variables
  automatically.

Click Here
Prefs Menu
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Click on button after filling in the
necessary information.
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Surface Restricted Particles

• Effective for finding separation regions.
• Trace limited to tangential component of trace
  variable offset by a small distance from
  surface.
• small distance can be user specified.

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VRML Output

• VRML files contain 3D geometry and color
  information.
• Can be viewed by most web browsers with a VRML
  plugin (in theory).
• Can contain transient data.
• VRML 2 data format used.

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VRML Output - Limitations

• No annotations (text, lines, logos, legends), no
  plots, no axis, etc. --gt Only 3D geometry.
• No transformation info (including local
  transforms)
• Only transient data can be animated (no moving
  clips, isosurfaces, particle traces, etc.)

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Transient data - Active parts

• When a time change is requested, parts will
  update to the new time - unless.
• The representation of the part on the EnSight
  client is frozen to the current time step. Used
  to show multiple time steps simultaneously on the
  screen.
• WARNING parts are still updated on the server!

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Macros

• Any chunk of command language saved to a file can
  be attached to a keyboard key or mouse button as
  a macro.
• Macros can be defined per-user or per-site.
• Multiple command files can be attached to the
  same key/button - commands will cycle.
• Can prompt for input.
• Most effective when written as dataset
  independent.
• Consider the command command delay_refresh ON

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Macro Example

• Turn on Record in command dialog and specify a
  name.
• Toggle on the Delay Refresh.
• Generate rest of operations.
• When finished, turn Record off.

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Macro Example (cont.)

• Move the command file to your .ensight6/macros
  directory.
• Run macromake utility.
• Either restart EnSight or click Reload Macros
  button.

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Macros (cont.)

• You can prompt user for input with the command
  language.
• When user value is needed, insert command
• ??Please type ON or OFF
• view hidden_surface ??Please type ON or OFF

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Macros (cont.)

• If you want to prompt for a part selection,
  replace the part selection commands with
• part select_partname_begin
• ??Select the parts \n then click Continue
• part select_partname_end
• part get_mainpartlist_select

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Macros (cont.)

• The following example will create a clip plane
  after the user has been prompted for the plane
  equation coefficients and the parts.

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Macros (cont.)

• view_transf plane_equation ??Enter A B C D
  values
• view_transf function global
• part select_partname_begin
• ??Select the parts in the Part List \n and press
  continue
• part select_partname_end
• part get_mainpartlist_select
• clip begin
• clip tool plane
• clip end
• clip create

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Macros (cont.)

• Similarly, if you want to select a variable from
  the variable list you must insert the following
  command language
• variable select_varname_begin
• ??Select the variable(s) from the list \n then
  click Continue
• variable select_varname_end
• variable get_mainvarlist_select

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Part Extract vs. Copy

• Extract command will make a deep copy of the
  selected parts.
• Copy command will make a shallow copy of the
  selected parts.
• Copied parts only exist on the client however
  most features behave as you would expect.

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Shallow Part Copy

• Original Part
• Coordinates
• Scalars
• Vectors
• Elements
• Creation Attributes
• Display Attributes

• Copy Part
• Coordinates
• Scalars
• Vectors
• Elements
• Creation Attributes
• Display Attributes

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Part Copies (cont.)

• Each copied part can have different display
  attributes and can be assigned to different
  frames for transformation control.

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Auxiliary Clipping Plane

• Turn on global toggle in View mode. Turn
  on/off for individual parts in Part mode.
• Can be used to either peer into a solid or to
  cap a solid (with the help of an interactive
  clipping plane tool).

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Auxiliary Clipping Plane (cont.)

• Plane removes geometry behind the plane tool.
• Extra auxiliary clipping plane via Command
• test clip_plane2

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Multiple Cases

• Every dataset is dealt with as a Case
• EnSight can deal with up to 8 concurrent cases
• Each case is handled by a new EnSight server
  process (all manual connections must be started
  by hand)
• Variables are merged in variable list

• Time is merged in solution dialog

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Case Dialogs

• Consider Case visibility per viewport

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Case Limitations

• Cannot apply a variable from one case to parts
  from another case (future feature).
• Cannot merge different case parts.
• When creating a part (e.g. isosurface) from
  different case parent parts, you will get
  multiple created parts.
• Cannot group parts from different cases (future
  feature).