after more testing yesterday I can describe more precisely:
I send an image from pix_video to a rectangle and I use a gemwin with the same resolution. pix_video = 1280*720 gemwin = 1280*720 I use facetime (builtin), external webcam (logitech) and blackmagic intensity interface (USB3/HDMI) I get a proper image and I can switch the cams. THAT’S GREAT !!!! :)
but - when I change the resolution of pix_video I have to recreate gemwin to see the effect - when I send create, 1 to gemwin I get the bogus errors and I have to wait for them popping up (more for facetime, less for external cams) - real issue: the border 0 message to gemwin creates a black gap where the border was and changes the image frame (part of the image at the left side vanishes by an x-zoom, the window-size remains the same) - the rectangle object needs weird numbers like 7.5 and 4 to get the image fitting to a gemwin, the original image is very small in the gemwin without scaling and adapting
I found the help-file for pix_video in the Max folder. But when I open it in the patch it is blank.
best Michael
Am 25.03.2020 um 12:00 schrieb gem-dev-request@lists.iem.at:
Send GEM-dev mailing list submissions to gem-dev@lists.iem.at
To subscribe or unsubscribe via the World Wide Web, visit https://lists.puredata.info/listinfo/gem-dev or, via email, send a message with subject or body 'help' to gem-dev-request@lists.iem.at
You can reach the person managing the list at gem-dev-owner@lists.iem.at
When replying, please edit your Subject line so it is more specific than "Re: Contents of GEM-dev digest..."
Today's Topics:
- GEM/Mac: Someone sent a bogus pointer to copy2Image (Michael Beil)
- Re: GEM/Mac: Someone sent a bogus pointer to copy2Image (IOhannes m zmölnig)
Message: 1 Date: Tue, 24 Mar 2020 14:22:41 +0100 From: Michael Beil post@michaelbeil.de To: gem-dev@lists.iem.at Subject: [GEM-dev] GEM/Mac: Someone sent a bogus pointer to copy2Image Message-ID: 343AD94E-91B3-4693-87E3-A6E1F0B65872@michaelbeil.de Content-Type: text/plain; charset=utf-8
Hi list,
I try to use a patch that worked with 0.43.4 with 0.5/Gem0.94 on a Mac. There are a some strange things I could not figure out yet. At first, each time I create a gem-window I get a dozen of
GEM: Someone sent a bogus pointer to copy2Image
errors.
Even when I just use the help-patch for pix_video (e.g.) I get them. All other problems are maybe also related to pix_video. Especially wrong resolutions and image-distortion. So my second question is: Has pix_video been replaced? Or discontinued? Is the pix_video-help still „valid“?
Maybe this has been discussed already, sorry then :)
Thanks and best Michael
Message: 2 Date: Tue, 24 Mar 2020 17:01:36 +0100 From: IOhannes m zmölnig zmoelnig@iem.at To: gem-dev@lists.iem.at Subject: Re: [GEM-dev] GEM/Mac: Someone sent a bogus pointer to copy2Image Message-ID: 6978e076-d568-7c68-6c22-1934301dc8b9@iem.at Content-Type: text/plain; charset="utf-8"
On 3/24/20 2:22 PM, Michael Beil wrote:
Even when I just use the help-patch for pix_video (e.g.) I get them. All other problems are maybe also related to pix_video. Especially wrong resolutions and image-distortion. So my second question is: Has pix_video been replaced? Or discontinued? Is the pix_video-help still „valid“?
just a quick reply: [pix_video] is fine (well: should be :-)) the help-patch is also still valid.
what do you mean with "wrong resolutions" and "image distortion"?
which camera are you using?
gfmards IOhannes
On 3/25/20 12:41 PM, Michael Beil wrote:
after more testing yesterday I can describe more precisely:
I send an image from pix_video to a rectangle and I use a gemwin with the same resolution. pix_video = 1280*720 gemwin = 1280*720 I use facetime (builtin), external webcam (logitech) and blackmagic intensity interface (USB3/HDMI) I get a proper image and I can switch the cams. THAT’S GREAT !!!! :)
but
- when I change the resolution of pix_video I have to recreate gemwin to see the effect
oops. that should not be necessary.
- when I send create, 1 to gemwin I get the bogus errors and I have to wait for them popping up (more for facetime, less for external cams)
only when re-creating the gemwin, or also when creating it for the first time?
do those errors stop eventually? (might be, that the camera takes some time to start streaming images; and Gem complains that it doesn't get any images).
- real issue: the border 0 message to gemwin creates a black gap where the border was and changes the image frame (part of the image at the left side vanishes by an x-zoom, the window-size remains the same)
not sure i understand what you are saying. could you post a screenshot? also, does the problem persist if you send the [border 0( *before* you create the Gem-windows (for the first time)? or are you doing that anyhow.
- the rectangle object needs weird numbers like 7.5 and 4 to get the image fitting to a gemwin, the original image is very small in the gemwin without scaling and adapting
this is expected behaviour. a [rectangle] is not some space on the screen to be occupied by whatever incoming video you have; but instead it is a representation of a 3d-dimensional object (without depth :-)) in a 3d-world, and you just happen to look at it. the closer you (or the camera) is to the object, the larger it gets. it's the same as with your TV, really :-)
in the default camera position, the upper window border is Y=+4 and the lower window border is Y=-4; since [square] (and [rectangle]) really expand from -size to +size, a [square] of size=4 will cover the entire height of the screen. depending on the aspect ration of your video (or your gemwindow/screen, if you want to show the video fullscreen, even if you are distorting it), you have to adjust the width of your [rectangle]. if the aspect ratio is 1:1, then an object that covers X=-4 thru X=+4 will cover the entire width of the window (as in [square 4]). if the aspect ratio is 2:1, then you need a [rectangle 8 4].
if your aspect ratio is 1280/720 (which, after doing some maths is the same as 1.777777/1 or (if we multiply by 4) 7.1111111/4), then you need to use a [rectangle 7.111111111 4].
you can automate this with
| [pix_info] | | | ||| | [/] | | | [* 4] | | [rectangle 0 4] |
I found the help-file for pix_video in the Max folder. But when I open it in the patch it is blank.
Max-folder? do you get some Tcl/Tk error in the Pd-console?
gfmdsar IOhannes
-
IOhannes m zmölnig -
Michael Beil