Picture control: stick image to corner

In a Picture Control, with the option "Stick image to corner" the image is sticked to the upper-left corner of the control.
Is there a way to select the corner to which the image is sticked (upper-left, bottom-left, upper-right, bottom-right)?
I've been thinking to this properties because I have some picture controls used as a background images, and I need the background isn't moved when I drag a splitter (see attachment)
Vix
In claris non fit interpretatio
Using LV 2013 SP1 on Win 7 64bit
Using LV 8.2.1 on WinXP SP3
Using CVI 2012 SP1 on Win 7 64bit, WinXP and WinXP Embedded
Using CVI 6.0 on Win2k, WinXP and WinXP Embedded
Attachments:
picture.uir ‏749 KB

Probably it would have been better if I had posted an uir file that shows the "real" situation of the project I've been working on.
As a matter of fact my application has a vertical splitter and two horizontal splitters:
I'd already tried several workarounds but I didn't find a solution for the bottom-right background image.
In the first post I attached a simple panel, but in this one I attached an uir that shows the issue of my application.
Is there any workaround for the bottom-right image?
Vix
In claris non fit interpretatio
Using LV 2013 SP1 on Win 7 64bit
Using LV 8.2.1 on WinXP SP3
Using CVI 2012 SP1 on Win 7 64bit, WinXP and WinXP Embedded
Using CVI 6.0 on Win2k, WinXP and WinXP Embedded
Attachments:
real_picture.uir ‏2988 KB

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A problem about saving the picture control'image in a child VI.

i want to use 'export image' method to get a picture control'image,so ,i have a child VI to use method 'export image',and a main VI to using the child VI,but when i run the main VI,there is no image is saved on the disk ,but if i open the child VI'frontpanel,then,i run the main VI,the image is saved on the disk,i want to know the reason why i can not get the image,when i run the main vi without the child 'frontpanel or blockdiagram is opened.
Solved!
Go to Solution.
Attachments:
child.vi ‏11 KB
main.vi ‏7 KB

The behavior that Simon describes is not a hard and fast rule, and the Export Image method used to be a bit of an exception. It would supposedly update the controls of unopened FPs that used the method. Reality never quite matched what was described in the documentation if I recall.
If you pore over the detailed help you discover that this method works fine in SubVIs with some controls and not others. Look at the characteristic 'Loads the Front Panel Into Memory', for a Picture control it is 'No', for a Waveform Graph, for instance, it is 'Yes'. Caveat: Relying on this level of detail to be correct in the LV help is a bit risky. Best to try it yourself. Not loading the FP is a good hint that the method is not going to behave in a SubVI.
As to the problem at hand, a Picture Indicator is an odd choice to me to use this method. You have VIs in the Picture palette to convert pictures to image data and then export the image data to a PNG or JPG or BMP file directly. Anything you would draw and then export could be exported directly without drawing.

How do I get picture control to display PNG images with transparent background?

I have an image of a robot arm looking from the top with a transparent background and saved as PNG. When I drag the image directly to LabVIEW front panel, the image shows properly with the transparent background, but I want to manipulate it such as rotate the image. I used the Read from PNG.vi to read the image to a picture control, but the background isn't transparent anymore. Am I missing something?
Please help.

unclebump gets 5 stars for referring you to a document that I wrote.
Incidentally, I wrote it years back, for LabVIEW 7.0. A couple of notes to summarize:
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Also, that VI ships with 8.0 and later. I don't know if it's on the palettes but it lives here: vi.lib\picture\picture.llb\Create Mask By Alpha.vi
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I'm making some palette installers for ease of distribution for some libraries I have written. I'm following the example VIs (search the example finder for "palette API").
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- Cheers, Ed
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In cases like this I often resort to using a transparent classic path as an overlay to catch dropped files. If you do not plan on interacting with the picture control, it is quite easy. Otherwise it is just a few more events to control visibility when the mouse enters the VI with the button pressed.
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Attachments:
DragToPictureControl.vi ‏16 KB

Load picture control with png image from the web

Hi guys,
Is there an example anywhere for Labview 8.6 for loading a picture control with png image from the web?

Hi lavalava,
here you find a note on how to load pictures from the internet. After grabbing the data you could save them to a file, load the file with the picture file functions and then convert it into the image datatype to feed a picture indicator with the data...
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Is there a VI for drawing an image at a certain point in a picture control? Something like the "Draw Text at Point" or "Draw Rectangle" VIs but with an image.

An example using Unflatten pixmap... redraw the same image after a 50 pixel shift in x and y :
Message Edité par chilly charly le 11-16-2007 02:00 PM
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
Add image.png ‏259 KB

How can I Manually Insert an Image into a Picture Control?

Hi,
I am able to insert an image programmatically into a picture control. But I want to insert an image into the picture control without any code that is manually. How can I Do that?
Thanks in Advance
Regars,
Malleswari

malli wrote:
Hi,
I am able to insert an image programmatically into a picture control. But I want to insert an image into the picture control without any code that is manually. How can I Do that?
Thanks in Advance
Regars,
Malleswari
You may also drag and drop a picture directly to your front panel. You can also use paint, or some other tools, to copy a part of a picture and past it into your front panel. This actually works for the block diagram also. Se example
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Attachments:
pic example.vi ‏157 KB

Move a jpeg image within a picture control

I am having problems moving a jpeg image inside a picture control with my arrow buttons.
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Harold Timmis
[email protected]
Orlando,Fl
*Kudos always welcome
Solved!
Go to Solution.
Attachments:
picfun.vi ‏17 KB
ball.jpg ‏2 KB

Hi Harold,
Things are hooked up wrong....
(Also, you don't really want to read the same file with each repeat. Once is enough! )
LabVIEW Champion . Do more with less code and in less time .
Attachments:
picfunMOD.vi ‏13 KB

FP.Get Image not working on a subVI if it has a picture control

Download the attached (7.0).
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Run the VI. The indicators in the subVI are not updated the first time you run the VI.
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Try to take over the world!
Attachments:
SubVI FP not updating.llb ‏30 KB

Hey Tst,
Thank you for the feedback.
I tried the vi's you have attached here and it updated the first time I ran the Caller.vi.
I must be doing something different from you.
Aashish M
Applications Engineer
National Instruments
http://www.ni.com/support/

How do I apply a texture to an imported .stl file in 3D Picture Control?

Hi, I'm trying to apply a 2D image as a texture to an imported .stl file in 3D picture control. It works fine if I'm using a standard shaped mesh created in LabVIEW, however is there a way in which a texture can be applied to an imported model that isn't a standard shape, in my case a balloon. I've attached the an image of the Sub vi where I apply the texture. The object just shows up as a flat colour. Do I need to define how the image is applied to the mesh due to it being a non-standard shape? If so, any pointers would be appreciated.
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Attachments:
stl texture problem.jpg ‏60 KB

Apologies, been trying all afternoon and then a couple of minutes after posting, I figured it out. Using a property node for the Scenemesh reference, I set the property TextureGenMode to Spherical and it appears to now display the texture on the mesh.

Loop delay when using two VI's with picture controls simultaneously

Hey all,
I have observed an odd behavior and I'm not quite sure why it happens. I have two VI's that are mapping GPS coordinates onto XY graphs that are displayed on top of picture controls. When the maps from both of the VI's are visible on screen the loops get delayed by as much as a second, but if you just cover the map portion with another window they go back to looping at twice a second as they should. It took me a little while to figure this part out, let me tell you. There are no computing limitations that should be affecting it since my CPU is only at 10-12% and have 4GB of RAM available. I checked the GPU too just in case and it was sitting at 3% usage, so no hold up there. Anyone have any experience with something like this happening to them? It has me stumped.
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dnorman wrote:
Is it possible to run the redraw of the picture tiles in parallel, on multiple cores, if they are going into the same control?
I doubt it. Even if the picture control wasn't pretty old (and it is), I don't know of any mechanism which will give you this level of control.
Here are potential options. I have no idea if they will help:
Instead of building separate commands, process the data in such a way that you have a single raster image (i.e. a 2D array) to place into the control. I believe this should be faster.
Use another type of display (such as a .NET indicator).
Instead of using the XY graph, overlay the data directly onto the image (there should be some graph VIs in the picture palette which might help).
Try defering panel updates before updating all the controls and undefering after. I don't think this will help, but it's probably the easiest change to make.
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Inserting a small graphics in a picture control

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Hello,
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Here's an example :
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When my feet touch the ground each morning the devil thinks "bloody hell... He's up again!"

2D picture control doesn't refresh properly

I have an application which displays a picture in a 2D picture indicator and draws a few rectangles and lines on top of the picture.
The locations of these lines change throughout the day, and the application is designed to run minimized and then provide a quick-look at various status items when it is restored by the user.
While minimized however, the image does not appear to get updated, even though my code is updating it once per second. I can't actually tell what happens when it's minimized obviously, but the behavior persists for some time after the window is restored, and the state it is 'frozen' at is from the time it was minimized.
There are other digital indicators on the front panel getting updated in the same 1Hz loop, so I know it is just the 2D picture indicator that's not working--i.e., something with LabVIEW or system related is causing the image not to refresh while it's minimized, and more importantly, for some time after the application is restored.
Some things that will cause a successful refresh to the displayed image after I restore from the task bar to a stale display:
Minimize again, then restore again (of the LabVIEW window)
Probing the datapath on the BD for the final Draw Line output that connects to the indicator
Waiting for awhile (15 seconds? 30 seconds?)
I also tried setting the following property node with no effect:
VI > Panel > Defer Panel Updates > Set to False
Another way to think about this would be to imagine a 2D picture control with an analog clock, where lines are drawn for minute and hour hands, and updated once per second. This is not what I'm doing but the example is easy to understand. When the application is restored from the taskbar, the clock appears frozen in time from the last time it was minimized.
Same behavior running this in LV 2012 and 2013... I am looking for any other property nodes or refresh methods to force a refresh at 1Hz, regardless if the display is visible. The display should be immediately up-to-date when the application is restored by the user.
Solved!
Go to Solution.

You could try looking at the panel resize event (to recognize the restoring) and then force an update using one of the following methods (I have no idea if they will help):
Set defer to T and only then to F.
Set defer to T when minimizing.
Set the FP window state to something else (hidden, minimized, etc.) and then to standard. This should ideally do the same thing you did with minimizing and restoring again.
Use the window position property to place the window off the screen and then back in its original position.
See if you can toggle the synch. updates property programmatically.
Have a hidden control displayed over the picture control and then hide it.
Try to take over the world!

3D Picture Control Orthographic View zoom - Camera Set up?

I am trying to display two 3D picture controls. One displays some objects in 3D (Auto Projection: Perspective, Camera Controller: Spherical). This 3D image works great and I am having no problems with it. The other Picture Contol is meant to simulate a 2D image of the 3D object, essentially a Plan View. To do this I made a 3D picture control with a Orthographic view. I set the camera to view from above (z-axis) and set the target to be positive y-axis.
I have attached an example vi (labview 2013 SP1) that creates some simple 3D objects and displays them in Perspective and Orthographic using the same Camera Position. On initial start, the Orthographic image is zoomed in heavily. If I manually zoom it (Hold Shift button and mouse up or down), then the Orthographic image will set itself to the correct Camera position. This is essentially the solution to my problem, but I can't assume the user will have the ability to manually zoom the image. So I need to set it programmatically.
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Is there any way to set the Camera distance for Orthographic projection programmatically? I have tried starting with the 3D picture control as perspective, set the camera distance and then changing it to orthographic, but this still results in a zoomed orthographic image. From the reading I have done, I think I am trying to the impossible. Does any one have another suggestion to get the same result. I have previously used the 2D picture functions to generate the image but found that method inefficient.
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Thanks
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Attachments:
3D_projection_Test.vi ‏38 KB

Hi Relec,
thank you (and Kudos) for that inspiring demo!
Took me while to work it out, but I might have found something that could help us with the orthographic projection.
Sometime back someone posted a way to collect the current Camera data. Sorry I lost the source. But here is my version as a Get3DCameraPosition.vi using the ModelViewMatrix.
Unfortunatly this doesn't return the current Target and so a bit of guessing in the right Direction is necessary.
I'm impressed you found a way to make the Shift-Drag Zoom-movement possible on the orthographic window.
It seems a whole thread at http://forums.ni.com/t5/LabVIEW/3D-Picture-Control-Doesn-t-Zoom-in-Orthographic-Mode/td-p/1544460/page/2 wasn't able to find that out.
In the meantime I've found a way using the ProjectionMatrix to create a zoom-effect which I build into your demo using the mouse wheel.
All in all I've tried to translate camera movements from the perspective window in the ortho - assuming this is what you were after?!
Again the missing target information doesn't make it quite right.
Regs
Jannis

Background Pictures in Disc Images

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Sorry, wrong forum!

Picture control: stick image to corner

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