API ROBOT Screen capture - black views

[polylouis]

Hi everyone,

I have one question about screen capture. 

If I create .rtf file with captures all is good but if I save screen capture from clipboard the view is black :

modele_view=structure.Selections.Get(IRobotObjectType.I_OT_OBJECT)

modele_view.FromText("Panel")

viewRobot=IRobotView3(app.Project.ViewMngr.CreateView(IRobotViewType.I_VT_STANDARD))

viewRobot.Selection.Set(IRobotObjectType.I_OT_OBJECT, modele_view)

viewRobot.Visible = True

viewRobot.Redraw(0)

viewRobot.Projection=IRobotViewProjection.I_VP_3DXYZ

viewRobot.Title = "Vue du modèle"

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_STRUCTURE_STRUCTURE, True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_STRUCTURE_BAR_NUMBERS, True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_STRUCTURE_SUPPORT_SYMBOLS, True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_STRUCTURE_ATTRIBUTE_LABELS, True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_SECTIONS_NAME, True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_SECTIONS_SURFACE, True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_SECTIONS_MATERIAL, True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_FE_PANEL_CONTOURS, True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_FE_PANEL_NAMES , True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_FE_PANEL_THICKNESSES  , True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_FE_CONTOUR_COMPONENTS, True)

viewRobot.ParamsDisplay.Set(IRobotViewDisplayAttributes.I_VDA_ADVANCED_ELASTIC_FOUNDATION, True)

scPar=IRobotViewScreenCaptureParams(app.CmpntFactory.Create(IRobotComponentType.I_CT_VIEW_SCREEN_CAPTURE_PARAMS))

scPar.Name="Vue du modèle"

scPar.UpdateType = IRobotViewScreenCaptureUpdateType.I_SCUT_CURRENT_VIEW

scPar.Resolution = IRobotViewScreenCaptureResolution.I_VSCR_4096

scPar.UpdateType = IRobotViewScreenCaptureUpdateType.I_SCUT_COPY_TO_CLIPBOARD

viewRobot.MakeScreenCapture(scPar)

from PIL import ImageGrab, Image

im= ImageGrab.grabclipboard()

if isinstance(im, Image.Image):

    im.save('Vue du modèle.png')

Do you have any ideas to fix it ?

Thank you in advance,

Regards 

Louis 

[Stephane.kapetanovic · Accepted solution]

hi @polylouis 

Have you tried :
put a delay between copying and saving,
save in another format (bmp),
refresh the view before capture (viewmngr.refresh),
to decrease the resolution (2048, 3072),
to review whether the structure is actually visible before capture

To set on and off parameters

Best regards

[Stephane.kapetanovic]

it is also possible to save your captures directly in Excel or Word rather than saving it to disk.

#146

https://forums.autodesk.com/t5/robot-structural-analysis-forum/api-command-vba-projection-capture-of...

[polylouis]

Thnak you Stephan ! 

Antoher question: I would like to know if it is possible to see extreme values on panel like following picture :  

I ddi not find the api command to add on my code.

Thank you in advance,

Louis 

[jhe55NCY]

Hi again @Stephane.kapetanovic,

I have a similar issue when I am using the API for screen capture. I have found the line of my code which seems to be causing the blackout issue. The line is:

'viewRobot.SetSize width, height'

If I don't comment this line out, it causes my Robot window to disappear and the image to be completely black (apart from the coordinate system)

I would like my figures to be landscape so I would like to have the viewRobot.SetSize line of code in, or a suitable work around. Can you help me with this?

[Stephane.kapetanovic]

hi @jhe55NCY 

the setsize function defines the size of the window box. With such dimensions (370x300mm) it must be larger than your screen. You could test the GetSize function which will return its current size.
The idea of adjusting the size of the window and not the zoom is to fit taller than wide structures or to have the legend closer to the structure.
The rest of the adjustment must be done with SetZoom.
The black screen may appear on the capture if the refresh time is not sufficient between the time the view is configured and the time the shot is taken.
It is possible depending on how you have set up the view that the structure does not appear. I recommend that you read the following topic to adjust your eyesight.

https://forums.autodesk.com/t5/robot-structural-analysis-forum/api-command-vba-projection-capture-of...

After that you can communicate your code. </>

Best regards

[jhe55NCY]

Hi @Stephane.kapetanovic,

Thank you for your suggestions. The code didn't actually require any updating to it, I found that the black screen would occur when I was using a second monitor, but work fine when just using one screen. Through trial and error, I determined that to prevent a black screen, I needed to have the Robot window open and maximised on my primary screen (number 1 screen on display detect). Even though my second monitor is larger than my primary screen, I would still get a black image if I did not follow this guidance. 

Hopefully, this may help other people who experience this frustrating issue.

Best wishes,

James