How to properly use QSkyBoxEntity? - qt5

I looked everywhere, but there are not any guides or explanations of how to use QSkyBoxEntity.
I created Entity and filled it with transform (set translation and 3d scale). Also changed name and extension.
When I'm trying to run program it says
"Qt3D.Renderer.OpenGL.Backend: Unable to find suitable Texture Unit for "skyboxTexture""
I checked several times and tried different png files but no luck.
My image (I know it's fake transparency, but it shouldn't change anything, right?)
And here's part of a code:
Qt3DCore::QEntity *resultEntity = new Qt3DCore::QEntity;
Qt3DExtras::QSkyboxEntity *skyboxEntity = new Qt3DExtras::QSkyboxEntity(resultEntity);
skyboxEntity->setBaseName("skybox"); //I tried using path as well
skyboxEntity->setExtension("png");
Qt3DCore::QTransform *skyTransform = new Qt3DCore::QTransform(skyboxEntity);
skyTransform->setTranslation(QVector3D(0.0f,0.0f,0.0f));
skyTransform->setScale3D(QVector3D(0.1f,0.1f,0.1f));
skyboxEntity->addComponent(skyTransform);

Looks like it's not finding the skybox texture. Did you use an absolute path when you say "I tried using path as well"? The path you set is relative to the build path, i.e. it's not where your C++ file lies.
Alternatively, you could use a resources file and then load then image using
"qrc:/[prefix]/[filename without extension]"
You can also check out the Qt3D manual SkyBox test here:
https://github.com/qt/qt3d/tree/dev/tests/manual/skybox

It's important to properly name files in order for skybox to work and use resource file for storing.
I recommend .tga, but other formats should work as well.
You can read about it here:
https://doc.qt.io/qt-6/qml-qt3d-extras-skyboxentity.html
And here's example how it should look

Related

How can I run Neural Machine Translation with Attention in Google Colab with a different paired language?

I want to use a different language pair at the example provided in TernsorFlow website, Google Colab notebook only picks spanish-english
https://colab.research.google.com/github/tensorflow/docs/blob/master/site/en/r2/tutorials/text/nmt_with_attention.ipynb
I tried changing the link to the esp-eng data that download's from it, but that didn't help
How can I try a different language set, without locally setting-up colab, it did mention at the end on that page, that I can try a different language set.
The final note on using a different dataset refers to this website which includes tab-delimited files.
You mainly need to change the values in this cell according to the link to the zip file you need.
# Download the file
path_to_zip = tf.keras.utils.get_file(
'spa-eng.zip', origin='http://storage.googleapis.com/download.tensorflow.org/data/spa-eng.zip',
extract=True)
path_to_file = os.path.dirname(path_to_zip)+"/spa-eng/spa.txt"
You can try other datasets from:
OPUS
WMT
However, in these corpora, the source and target are in two separate files, so you have to adjust the code that extracts pairs, instead of split('\t') it should open two files and get the source and target line by line.

How to apply metadata to all files in a content directory

I have a content directory called foo and I want all files under that directory to have an extra metadata item foovar: default, unless explicitly overridden in the file header. I think I'm supposed to do this with EXTRA_PATH_METADATA, but I can't figure out what incantation it wants.
(for my current use case I'm trying to apply template: sometemplate within this dir, but I'm interested in solving the general case as it would make several related headaches go away)
I think what you're looking for is actually DEFAULT_METADATA. Check out this portion of the documentation:
DEFAULT_METADATA = {}
The default metadata you want to use for all articles and pages.
So, in your case it might look something like this in your config file:
DEFAULT_METADATA = {'foovar': 'default'}
Then to assign your custom template(s), see this portion of the documentation.
This wasn't possible at the time I asked. I've since sent the devs a PR adding support, and it's been merged to master. Presumably it will go out in the next release. It makes EXTRA_PATH_METADATA recursive, so you can apply settings to a subdir like this:
EXTRA_PATH_METADATA = {'dirname/subdir': {'status': 'hidden'}}

Is it possible to rename png files by the time of creation, not after

I am using File[] imageFile = PdfUtilities.convertPdf2Png(new File("MYPATH")) command to generate png from pdf , which is giving file name as "workingimage01","workingimage02"...."workingimage0n" and so on, is it possible to change this name setting by the time png's are generated. Thanks in advance.
I am trying this command for 10 pdf parallel, so it is overlapping. thats why i need to know is there a way or i am asking out of the box question.
The name is hard coded in the source. You can create an overloaded method that takes another parameter for the working files' name.

Why doesn't setImageInterlaceScheme() make a jpeg progressive?

I'm using php Gmagick to modify images. The following code works as expected except that the images are not progressive. Why? According to the GraphicsMagick docs it should. For reference, the input image is 666 x 1000.
$img = new Gmagick();
$img->setSize(900, 900)
->readImageBlob($image->getBytes())
->setImageInterlaceScheme(Gmagick::INTERLACE_PLANE)
->setImageResolution(96, 96)
->setImageFormat('jpeg')
->setCompressionQuality(70)
->resizeImage(900, 1351, Gmagick::FILTER_UNDEFINED, 1);
Note that
$img->getImageInterlaceScheme() === Gmagick::INTERLACE_PLANE
does return true after setting it.
Edit
I've tried both the INTERLACE_LINE and INTERLACE_PLANE constants. With neither seeming to have an effect on the output.
The original author created a bug on php.net (https://bugs.php.net/bug.php?id=66444), where the correct answer was eventually posted. You need to use the undocumented method:
->setInterlaceScheme(Gmagick::INTERLACE_LINE)
Instead of:
->setImageInterlaceScheme(Gmagick::INTERLACE_LINE)
This worked for me! For reference I am using PHP 5.4.20 with gmagick 1.1.7RC2 on top of GraphicsMagick 1.3.18.
The documentation you point to states:
Use Line to create an interlaced PNG or GIF or progressive JPEG image.
So, I think you should be setting the interlace to line.
->setImageInterlaceScheme(Gmagick::INTERLACE_LINE)
Note: I'm not sure if INTERLACE_LINE is an actual value. I assumed it was based on your code. Basically, try the line option.
Have you tried calling setImageInterlaceScheme before anything else? i cannot find the code, but maybe when you read the bits it already compose the image and then the interlacings takes no place.
$img
->setImageInterlaceScheme(Gmagick::INTERLACE_PLANE)
->readImageBlob($image->getBytes())
->setSize(900, 900)
->setImageResolution(96, 96)
->setImageFormat('jpeg')
->setCompressionQuality(70)
->resizeImage(900, 1351, Gmagick::FILTER_UNDEFINED, 1);
For sure the interlaceScheme has to be INTERLACE_PLANE, as you can read in the docs you already know http://www.graphicsmagick.org/GraphicsMagick.html#details-interlace
I've finally found the answer to this (using PHP IMagick) after struggling for weeks.
It turns out you have to set the image format to 'pjpeg' instead of just jpeg.
I have no idea why by by doing so my Images are correctly detect as progressive and render progressively in the browser.
I assume this will be the same for 'GMagick'
$im->setImageFormat('pjpeg')

phpexcel pdf rendering library has not been defined

After trying and failing to generate PDFs with PHPExcel 1.7.6 (out of memory errors), I upgraded to 1.7.8. I can't for the life of me figure out how to get it working. I've tried tcPDF and mPDF, and it's the same for both.
Putting it back to Excel output, I can see I'm setting the path correctly. All I can get is "PDF Rendering library has not been defined", and I can't figure out what it wants - I've tried 'mPDF5.4', 'MPDF54' (the actual name of the folder itself), 'mpdf', 'mpdf.php'...same each time.
I've been using PHPExcel for over a year, so I'm not entirely new to it. I've lost way more time than I care to admit on this problem, and I haven't found this problem described anywhere, so I'm feeling more than a little stupid that I appear to be the only one that can't figure this out.
The actual code I'm using is the following:
ini_set('include_path', ini_get('include_path').'\\Classes\\');
$rendererName = PHPExcel_Settings::PDF_RENDERER_MPDF;
$rendererLibrary = 'mPDF5.4';
$rendererLibraryPath = ini_get('include_path') . $rendererLibrary;
(That is, pretty well a copy of the example code.)
In the interest of completeness, the headers I'm using are
echo header("Content-Type: application/pdf");
echo header("Content-Disposition: attachment; filename=".$filename.".pdf" );
echo header('Cache-Control: max-age=0');
These near the top of the file, naturally.
Near the end of the file, the output code is
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'PDF');
$objWriter->save('php://output');
I got it working. Much as I'd like to say I had a breakthrough moment and understand it perfectly, I have no idea how I got it to work. However, in hopes that it might help someone, let me lay out what I did.
I'm running XAMPP on Windows. My file structure has the folder for PHPExcel itself in xampp\php\PEAR\Classes. domPDF is in the same folder, and I renamed it 'dompdf'.
For reasons I no longer recall, I set the include path like so:
ini_set('include_path', ini_get('include_path').'\\Classes\\');
To set the rendering path, I used the following:
$rendererName = PHPExcel_Settings::PDF_RENDERER_DOMPDF;
$rendererLibrary = 'dompdf';
$rendererLibraryPath = ini_get('include_path') . $rendererLibrary;
For the actual writer creation, I'm using the following:
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'PDF');
$objWriter->save($path.$fullFileName);
One thing I noticed that may have made things different was doing this:
// include 'PHPExcel/Writer/Excel2007.php';
That is, unlike everything I've done in PHPExcel, I'm not including anything from the Writer folder at all. Best I can remember, that's all that's different this time versus a week ago when I asked the question. Once I'd grabbed the 01simple-download-pdf.php file from the Tests folder in 1.7.8, it was mostly a matter of copying the code from it and tweaking it to my paths.
To summarize, leave $rendererName alone. The $rendererLibrary is the name of the folder that contains the library, 'dompdf' in my case. The $rendererLibraryPath is literally setting the path to that folder, so it ends with the path that contains the pdf library folder.
It should be obvious that I'm no uber-leet hax0r, but SO has answered many, many programming questions for me. I'm hoping this helps someone else, so they're not wasting hours like I did.
The PHPOffice contains also PHPWord. I have had the same error message with PHPWord. This is for LINUX. A replacement of 'PhpWord' by 'PhpExcel' should do the job for this case. You must modify the path $rendererLibraryPath to your needs.
$rendererName = \PhpOffice\PhpWord\Settings::PDF_RENDERER_DOMPDF;
$rendererLibraryPath = realpath(__DIR__ . '/../../../../../dompdf-0.6.1');
\PhpOffice\PhpWord\Settings::setPdfRenderer($rendererName, $rendererLibraryPath);
$objWriter = \PhpOffice\PhpWord\IOFactory::createWriter($phpWord, 'PDF');
$objWriter->save('helloWorld.pdf');
If you are getting this error and you have set the correct path to the TCPDF or DOMPDF folder (you do not have to write the full path), then also make sure you have these lines:
if (!PHPExcel_Settings::setPdfRenderer(
$rendererName,
$rendererLibraryPath
)) {
die(
'NOTICE: Please set the $rendererName and $rendererLibraryPath values' .
EOL .
'at the top of this script as appropriate for your directory structure'
);
}