How can I create an animated .gif file from a movie I have?
I guess it is pretty simple in objective-C and cocoa, by using the QTKit, to extract images from a movie, now how can I glue them together as an animated gif?
I don't think there's anything built into OS X for creating animated GIFs. Your best bet would be to look at the gifsicle project. You could either call it via command-line, or borrow the code if your license allows it. (it's GPL)
http://www.lcdf.org/gifsicle/
There is a pretty good lib (even if 'old') for this task (and other kinds of image processing): libgd. It appears it is built into Mac OS X or easly installable through MacPorts. Here some doc about animated GIF creation from single images.
Related
This is the link for the app Playbook for Developers.
these are examples of animations::
I think, this app use AnimatedVectorDrawable.
However it is very difficult to create a complex animation, unless there is any tool that converts vectors as svg2android made ools as Adobe Illustrator into vectors android can identify.
I would be most grateful if you tell me how to make these animations and if there is any tool to make using tools such as Adobe After Effects.
Unzip the apk and you will find out that they are gif files.
And it seems that they are using https://github.com/koral--/android-gif-drawable to load gif files.
I want to unify multiple windows from my OS X-Application into a Tab-View, just like Safari, Espresso, Finder, CodeRunner… I found PSMTabBarControl which does the job, but the look and feel are quite different from the other applications I saw.
Comparison (Image)
Then I found out, that those applications had always the same name for the resources used for the Tabs.
Screenshot of the recourses from CodeRunner
Could I just «steal» those images and use them in my own application with PSMTabBarControl or is there another way to get a more native look (not like the PSMTabBarControl default or Chromium Tabs).
You may want to try MMTabBarView.
MMTabBarView is a modernized and view based re-write of PSMTabBarControl.
I release a open source TabbarView controls for OS X and Cocoa recently, you may want to have a look at it here.
I'm trying to figure out how to translate (even if roughly) RGB curves from Photoshop into Quartz Composer - and ultimately into iOS. Any ideas on the best way to do this? Thanks!
For generating a LUT in Photoshop use File > Export > Color Lookup Tables.
For importing LookUp Table into Quartz Composer composition you may use JavaScript patch. Look at this post: How to use LUT with JavaScript?
Touching iOS development, you should get acquainted with Quartz Composer runtime implementation for iOS on GitHub (by Joris Kluivers). Find it here:
https://github.com/kluivers/qc-mobile
Together with an illustrator I want to create some screens with lots of animations/transitions (moving sprites). I need the illustrator to do the animation. He knows how to use AfterEffects so best would be some kind of timeline-tool to create the transitions/scalings/alphas etc.
My question is now: Is there some kind of tool out there that could be used to create animations and then export the used parameters to objective-c to import it to xcode?
Thanx!
To my knowledge: No.
We spend some time a couple of months back trying to find something similar to Expression blend, just for iOS, but without luck.
If you however are planing to make your app for MacOS and not iOS you can take a look at quartz composer. For iOS you could also take a look at storyboard (here is a link to fairly good tutorial), but I'm afraid your needs will not be met by the features of storyboard.
I found Flash2Cocos2D and I think this is the best solution available right now.
Also promissing: cocosbuilder!
I have a project in which I would like to programatically create and render a 3d animation based upon input. I originally asked here on stackoverflow if Blender was right for the job, and the response was yes, but upon looking at the API, it says this:
Python was embedded in Blender, so to access BPython modules you need to run scripts from the program itself: you can't import the Blender module into an external Python interpreter.
I want to be able to create and render this scene without having to ever open another program like Blender. Is this possible, and is Blender still the right choice?
Thanks in advance!
At work me and colleague worked on a project that rendered 3d scenes altered externally. We used Python to modify/create scenes, and did the rending on server through the command line interface (no GUI).
You can pass a python script as an argument to Blender in the command line options to
generate your scene objects and do the rendering.
I don't see how you can render in Blender without using Blender.
You can use Blender if you want, obviously this is not your only option.
If you need to
create and render a 3d animation based upon input.
You can go as simple or as you complex as you'd like.
You can use OpenGL in your language of choice (C++, Java, Python, etc.)
and display the animation (with or without fancy renderings).
It's up to what 'render' means to your context.
If you need some nice shading(light, soft shadows, reflections, etc. - ray tracers basically), you can still show an interactive preview to your users and generate the scene
for a 3rd party renderer(like Yafaray, Sunflow, LuxRender, etc. - I've put together a short list of free renders), and show the progress to the users after they've chosen the external render option.
On a similar note, have a look at joons.
HTH
Cart by Suomi - Yafaray Gallery image
Julia quaternion fractal - Sunflow Gallery image
Klein Bottle - LuxRender Gallery image