i´m working on a image database build with silverstripe framework. It needs to be able to upload large tiff files and they should be converted to jpeg. is there a build in function to do that, or do I have to use a library for that?
Regards,
Florian
SilverStripe doesn't have built-in image conversion utilities, just a GD class which mainly handles resizing of existing images (in gif/jpg/png).
ImageMagick supports conversion of TIFFs (see supported formats). I'm sure you can find PHP wrapper libraries for it (doesn't have to be specific to SilverStripe), or use the commandline tool directly via exec().
Other than that, we have the UploadField class to handle uploads. It uses the jQuery fileupload plugin, which supports larger files (although server timeouts and PHP config play a role here as well). You might want to look into chunked uploads.
Related
I want to load an illustrator file in my game. Unity should recognize different layers, colors, and forms, and layers with text and display them in a 2d canvas.
The goal is that the players can click on different forms and that unity recognize them as individual forms. Do you know any unity asset or a way to make this possible?
For example when you import an image like this as an illustrator file -> https://www.mandala-bilder.de/mandala/erwachsenemandalas/mandala-ideen-erwachsene.pdf
I thought about an SVG file but then I can´t use the different layers.
Illustrator has a proprietary file format, it has no publicly available documentation for newer versions. While you can dig out old specifications (this is why some programs only support AI files saved in ancient versions) http://www.idea2ic.com/File_Formats/Adobe%20Illustrator%20File%20Format.pdf I do not think you can just go in and start supporting a 2021 variant without requesting (and motivating) the spec from Adobe. They might also want to charge you for it.
SVG on the other hand is free and it's spec is public so there is much widely spread support. also SVG supports groups which can get your around the need for layers
Vector Express is a free conversion API you should be able to use. (requires a network connection, though)
https://github.com/smidyo/vectorexpress-api
You should be able to POST a request (https://docs.unity3d.com/ScriptReference/Networking.UnityWebRequest.Post.html) to this endpoint, with the raw AI file as the body:
POST https://vector.express/api/v2/public/convert/ai/gs/pdf/psd2svg/svg/
This will return a JSON object with a link to an SVG file that you can then download and display.
I need to download images from a website and display them on(?) multiple UIImageView.
Maybe I'll code a php to "read" the directory and search for images, write a XML file and use it as medium. But I'm not sure if it's the best way.
Let's see the options you have to fetch images from a website:
Fetching HTML and Parsing the HTML to find the images (on the iphone). Then downloading the images.
Writing a script (maybe PHP) that writes all image links to an XML file (or JSON), and then fetch the output of your script with all the links.
If you choose option (1) you'll need NSURLConnection to fetch data asynchronously (without blocking the UI). I would also use TFHpple to parse HTML using xpath queries, see this tutorial for help. Finally to fetch the images using their URLs you can use SDWebImage, SDWebimage also provides caching so your app will not download the same image multiple times.
The bad side of using option (1) is that any change in the Website you're getting the images from will break your app and you'll need to issue an update to the app store in order to fix it.
If you choose option (2), your app will be easier to fix if the website changes, you'll just need to modify your script.
If you go with option (2) you'll probably need NSURLConnection, NSXMLParser (or a third party XML parsing library) and to download the images I would recomend SDWebImage again. I would also advise using JSON (and NSJSONSerialization) instead of XML, just beacuse I find JSON easier to parse.
Yes, it will be very good if you write some php script to get image list (list of image urls).
After getting such urls you can asynchronously download and show them in image views. Look here for such async image view implementation
Whats the best way of using images in SWT Browser component. Currently i stream the images to temp folder and use their location for displaying them. Is there any better way of using these images in the SWT Browser component, particulary images from the platform plugins.
Best Regards,
Keshav
Convert them to a DataURI and insert them into the HTML directly.
http://en.wikipedia.org/wiki/Data_URI_scheme
If your plug-in is directory-based - rather than jar-based - you can use the files in the plug-in directly. The are several ways to find the file name of an resource entry of a bundle - I prefer FileLocator.toFileURL(URL) which converts an URL on the format platform:/<plugin>/<path> to a file:<filename>... exactly what you need.
What I'd like to be able to do is download any web page, and be able to view it offline.
It seems like html WebKit views cannot be converted to PDFs (on the Mac, you could 'print' a PDF, but that isn't possible on iPhone?).
So, the only way is to save the actual resources - save the html, the step thru each image, css, js file and save it locally. Then maybe alter the urls within the code so they point to the right place...etc ...etc...
Is there a standard way to do this?
Or, is there an open source project (in any programming lang) which does this kind of thing?
There's an excellent webkit html to pdf converter appropriately called wkhtmltopdf. Given the reources available on the iphone and its toolkits, I think it'd be easy to compile a version for the i-Phone ('think' being the operative word). We've managed to use the tool in a Windows, Linux and Solaris environment with absolutely no bugs. Here's the link:
http://code.google.com/p/wkhtmltopdf/
I need to add text string to a TIFF image. I am planning to use libTIFF for editing the TIFF image. The plan is to convert text to image using freetype2 and then somehow render the text image on to TIFF. Is this the right approach?
Any pointers on how to convert text to image? I saw the sample code of ft2 - initialising the library, creating face and then setting character sizes. But not sure what to do next? any pointers appreaciated.
One way could be using ImageMagick. They have tools for image composition and text rendering. (and many more)
Although ImageMagick is primarily used from the command line (especially in web environments) several language interfaces are available, too. Java, C, C++, ...
ImgSource is a really nice library for C/C++ on Windows, and it can do this out of the box.
http://www.smalleranimals.com/isource.htm
It's not free, but it's pretty cheap ($59)
You don't tell us which language you need to use, should it be portable or for a given platform, etc.
Using a ready to use existing graphic library, like the (big!) ImageMagick or others like libGD or DevIL might be the easiest way, lot of them have binding for lot of languages.
if youre on windows and in c++ then it's pretty easy to use gdiplus for drawing fonts. you have access to any installed font and you can save the raster out as tiff or jpeg etc as well using the one api.
of course you could also use some combo of freetype and libtiff, but you'll have to build those libs for win32. not that its hard, just more fussing around you may not want to do.