EnSight analyze, visualize, communicate EnSight 6.x Advanced Training Part 1 Instructors: Mike...

EnSight analyze, visualize, communicate

EnSight 6.xAdvanced Training

Part 1Instructors:

Mike Krogh, Anders Grimsrud


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


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


Review

• Work through Problem R1


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.

‘Prefs Menu’

Click Here


Click on button afterfilling in the necessaryinformation.


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.


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.


VRML Output - Limitations

• No annotations (text, lines, logos, legends), no plots, no axis, etc. --> Only 3D geometry.

• No transformation info (including local transforms)

• Only transient data can be animated (no moving clips, isosurfaces, particle traces, etc.)


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!


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


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.


Macro Example (cont.)

• Move the command file to your .ensight6/macros directory.

• Run macromake utility.

• Either restart EnSight or click “Reload Macros” button.


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


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


Macros (cont.)

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


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


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


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.


Shallow Part “Copy”

• Original Part– Coordinates

– Scalars

– Vectors

– Elements

– Creation Attributes

– Display Attributes

• Copy Part– Coordinates

– Scalars

– Vectors

– Elements

– Creation Attributes

– Display Attributes


Part Copies (cont.)

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


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).


Auxiliary Clipping Plane (cont.)

• Plane removes geometry “behind” the plane tool.

• Extra auxiliary clipping plane via Command:– test: clip_plane2


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


Case Dialogs

• Consider Case visibility per viewport


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).

EnSight analyze, visualize, communicate EnSight 6.x Advanced Training Part 1 Instructors: Mike...

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