Re: multiple overlays with NDPluginOverlay

[David Michel <dmichel76@googlemail.com>]

Thanks Mark, this was it!

On 11 February 2015 at 12:40, Mark Rivers <rivers@cars.uchicago.edu> wrote:

Hi David,

The example areaDetector IOCs all load the file commonPlugins.cmd.  That file loads NDOverlayN 8 times, so you can have up to 8 overlay items.  The first 2 are loaded with the following commands:

dbLoadRecords("$(ADCORE)/db/NDOverlayN.template","P=$(PREFIX),R=Over1:1:,NAME=ROI1,   SHAPE=1,O=Over1:,XPOS=$(PREFIX)ROI1:MinX_RBV,YPOS=$(PREFIX)ROI1:MinY_RBV,XSIZE=$(PREFIX)ROI1:SizeX_RBV,YSIZE=
$(PREFIX)ROI1:SizeY_RBV,PORT=OVER1,ADDR=0,TIMEOUT=1")

dbLoadRecords("$(ADCORE)/db/NDOverlayN.template","P=$(PREFIX),R=Over1:2:,NAME=ROI2,   SHAPE=1,O=Over1:,XPOS=$(PREFIX)ROI2:MinX_RBV,YPOS=$(PREFIX)ROI2:MinY_RBV,XSIZE=$(PREFIX)ROI2:SizeX_RBV,YSIZE=
$(PREFIX)ROI2:SizeY_RBV,PORT=OVER1,ADDR=1,TIMEOUT=1")

Note that the first command has ADDR=0, the second has ADDR=1.  That is what you are probably missing.

What camera are you running?  Are you loading commonPlugins.cmd from your startup script, as all of the example IOCs do?  If so then there are already 8 overlays.

Mark



From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] on behalf of David Michel [dmichel76@googlemail.com]
Sent: Wednesday, February 11, 2015 4:09 AM
To: EPICS mailing list
Subject: multiple overlays with NDPluginOverlay

Hi All,

I'm trying to get 2 overlays on my camera image but I'm confused with how to use NDPluginOverlay correctly. I've managed to get one overlay working properly with:


NDOverlayConfigure("$(PREFIX)OVER", $(QSIZE), 0, "$(PREFIX)ROI", 0, 1, 0, 0)
dbLoadRecords("$(AREA_DETECTOR)/ADApp/Db/NDPluginBase.template","P=$(PREFIX),R=Over1:, PORT=$(PREFIX)OVER,ADDR=0,TIMEOUT=1,NDARRAY_PORT=$(PREFIX)ROI,NDARRAY_ADDR=0")
dbLoadRecords("$(AREA_DETECTOR)/ADApp/Db/NDOverlay.template","P=$(PREFIX),R=Over1:, PORT=$(PREFIX)OVER,ADDR=0,TIMEOUT=1")
dbLoadRecords("$(AREA_DETECTOR)/ADApp/Db/NDOverlayN.template","P=$(PREFIX),R=Over1:1:,NAME=Crosshair,SHAPE=0,O=Over1:,XPOS=400,YPOS=400,XSIZE=100,YSIZE=100,PORT=$(PREFIX)OVER,ADDR=0,TIMEOUT=1")

Now... I want to add a second overlay, my guess was that I could just load NDOverlayN.template again with R=Over1:2 and set maxOverlays=2 in the call to NDOverlayConfigure. This, however does not work, as both Over1:1 and Over1:2 seem to control the same single overlay. I must be missing something trivial here, any help greatly appreciated!

Thanks,
David