I'm creating a Mac app which needs a trim bar like the GarageBand and iMovie ones. I need a library to get the audio waves to draw them on a NSView. Anyone knows a good library for that?
I think he was referring to the track editor (cut/copy/paste/move).
There's a cool blog post on how to draw Waveforms by the author of the Capo audio editing software:
http://supermegaultragroovy.com/2009/10/06/drawing-waveforms/
I wrote Cocoa (Mac) code based on that, and it's not too hard. You can find that code here:
https://github.com/uliwitness/UKSoundWaveformView
Though it's far from a finished, shippable editor, it's under a permissive license (zlib) and could easily be used as a basis for a full editor.
Maibe this helps: Drawing waveform with AVAssetReader
and if the issue is to draw, then this may help: Parametric acceleration curves in Core Animation
This framework might help you out. From the examples it looks like its pretty easy to use and works well. It provides components to open an audio file, play it and draw the waveform. You might need to implement the cut/copy/paste features on your own.
Related
I am working on a desktop application with JavaFX. As seen in the image below, I have an open space for a sort of mascot character, which I hope to give simple animations to. They are simple enough that it would be possible--but incredibly hard--to make in JavaFX, but complex enough that I feel like I should use a different method. This is my first JavaFX program, so my experience level is pretty low. I am able and willing to make these animations in other software and create a gif or mp4, etc if necessary, but I'm just in the dark here. I couldn't find much documentation. Below, you can see the space I would like to fill with an animated mascot. What method would be the best for this level of animation?
I tried to sign up, but I was unable; perhaps a problem from my side. Hopefully I'll get an answer as anonymous.
I apologize for the grammar/syntax, but English isn't my native language.
Recently I lost my job, so I have enough spare time to try something fun. I decided to create a simple text RPG game for me and some friends. It will very close to the board games like Talisman, Dungeon Run, and HeroQuest, using dice and a simple attribute/skill system. So no 3d graphics. The only 2d element, if I decide to include it, will be a map
that will allow the hero to move between locations. Currently I'm using Windows XP SP3, for the game I use wxDev-C++, and although cross platform would be cool, I don't really care.
I have some experience in C++ (currently using wxDev-C++), but I'm far from being called an expert or even a great programmer. I was about to start writing parts of the code, but I decided to check if creating a GUI for the game is possible. In some forums, many suggested I use Qt, CEGUI or wxWidgets, but most examples I saw are grey boxes that are
indifferent at best, when I want something that fits better in a fantasy setting. I don't claim I would do better, but I want a GUI that is more fantasy related.
What I want from the GUI:
1. A "cool" Gui with decent graphics. I could even create an image to serve as a mask in Photoshop, but the GUI builder will have to support imported images.
2. A relatively large textbox in the middle (with a scrollbar) that will display die rolls, damage and options.
3. The ability to display dynamically values (like the change in the health after each action without requiring to refresh manually)
4. Display an icon or a small image of the character in the area where I display stats/abilities.
5. Open new windows created with tha same GUI builder to allocate points, buy/sell things and open a map.
About the map in the game: I decided to create a map in photoshop. When the hero decides to move to another location, a new window will open showing the map. I thought of 2 possible ways to move between locations: 1) Create hotspots on the image and select one by clicking on the name of the location.(I dare not think about the complexity of this so we
move to idea #2) and 2) Have the image as a backgroung to a grid with vertical and horizontal coordinates. When the hero selects a new area to visit, he clicks on the area, but what he really does is click on the grid, which returns the two values (x,y) of the location and informs the game about the area the hero wants to visit.
Yeah, yeah, I know it's too much, so what I'm most interested in are the 1-3. I know that even if they are possible, it will propably take forever, but as I said I have spare time, and I like learning new things. I apologize for the size of the post, but I decided to post as many info as possible so you know what I want.
If any of you has used Qt, CEGUI or wxWidgets could you tell which covers most of my criteria? I saw some great stuff build with CEGUI, but I don't know if it is too hard to learn?
Thank in advance.
I know my answer comes pretty late, I only recently started using stackoverflow fairly recently, but maybe this response will help anybody.
CEGUI fully supports skinning widgets using XML. Our CEED editor (WYSIWYG) fully supports layout editing, but the skinning editor (LNF editor) is not finished as of now (11.11.2014), the development version supports exchanging images however and changing sizes and proportions, but more advanced adjustments have to be done in XML.
CEGUI has an imageset editor, fully supported by the CEED editor. Creating imagesets (sets of named subimages, with position and dimension inside a big texture atlas) is supported there. Additionally there is a way to create imagesets from just a bunch of jpg/png/... files using a tool. You would have to ask for specifics in the forum though because it is not integrated into CEED yet.
So basically with CEGUI you are free to make whatever fantasy GUI you want. Skinning simple elements like buttons and progress bars isn't much work in XML anyways. Without the finished editor, some more advanced widgets are more work to skin, but many skins have already been created done this way and some of them are even publically available in the forum and in the CEGUI stock files.
StaticText widgets supports what you want, you can even use images in there or change fonts and colours in the text if you want. Scrollbars are supported too.
I am not sure what you mean by this. You have to specify this.
A simple "Generic/Image" widget is available in CEGUI for this purpose. You can use precreated images or even RTT textures.
You can create and destroy windows in CEGUI without issues.
Regarding the map: I m not sure what you mean, but getting the position of a click in respect to an image (representing the map) is possible in CEGUI.
CEGUI is not particularly hard to learn. There is always the forums and the chat if you got questions. For an Open Source project it is quite well documented so if you read all of the API docu, and look at the supplied samples in the sample browser, you should already get quite far. And for everything additional there is the forum (search), the IRC chat and a community wiki (mind the targeted versions of an article there though)
For a project like yours, CEGUI seems perfectly suited (this is what it was created for in the first place). Qt is not really optimal for games for numerous reasons. wxWidgets I have never used.
I want to make a simple assistant for putting together AviSynth scripts. This would be a windows desktop application that would have a "preview" screen of an avi movie, which would give you a timeline, play, fast-forward, rewind, advance and go back frame-by-frame. The program would need to know the frame number of the current frame in the player and its filename.
What language is best suited for this? I know PHP ( I understand that this is not a contender ) and am familiar with Java. My thought is that the biggest hurdle with this project will be finding a library for the video playing features. With a cursory glance, no Java video libraries jumped out at me. My next thought would be c++ for this.
The output of this program would be an AviSynth script, a plaintext file which looks like this:
AviSource("myAvi.avi")
Crop(0, 0, 320, 240)
Blur(0.1)
There are a few tool kits that can do tihs:
C#: DirectShow (DirectX)
Java: JMF
If you have Avisynth installed, the only thing you need for preview (If I understood, that's your need) is something that can decode uncompressed video. It would open like a normal file. I'm sure there are video players implemented fairly well in Java, but I don't know how much functionallity from them you need. Anyway parsing scripts is not easy - I recommend you not to try to if you don't need to.
EDIT: I'm sorry, I thought you needed a very specific app, but from what you seem to need, you don't need to code anything, use AVSP!
Please watch this video, it shows how straightforward it is. It has advanced functions such as auto-completion, (even from your own auto-loading scripts!) syntax coloring, macros, automtic importing, drag&drop (of a video, for instance - just drag it to the video and AVSP makes the loading) scrit preview with zoom and all stuff, you can use automatic or custom sliders (you can make a slider that re-writes a number on the script in real time, for instance for hue/luminosity/contrast/etc. that would be cumbersome to control via script), checkboxes & radio buttons (for boolean values, etc...), text fields that alter strings in real time, and basically anything you need... Please check it out.
Also, VirtualDubMod is OLD.
And yep, AVSP is free, both gratis and libre! =)
I am new to OpenGl, almost new to C++.
I am looking for some code that does the following things.
Open an OpenGL window (maybe using glut)
Rotate the view point when the user press the left mouse button
zoom when the user press the right mouse button
translate the point of view the user press the central button
Basically what I need is a very simple graphics platform in which I will plot results coming from my algorithms. I have tried using the glut library and some code coming from the web, but no luck!
This should be a basic project, can you please point me where to find it. It just seems unreal to me that a so simple project turns to be so hard to find, but I have been googling for hours and no results.
I really appreciate your help,
thank you very much
You're asking for a fair amount of code there. Basic, but not insubstantial. Even if we do provide the code to do what you've asked, I'm not sure if you'll be able to use it to do what you want. The Red Book is a "bible" of openGL programming of sorts and will provide you with many of the functions and how to use them. I found the entire thing online here. Look into Chapters 1-3 for your drawing and rotating. Also, Lighthouse 3D has some great tutorials for you to look at for mouse events (Link). Some knowledge of linear algebra really helps, but you can manage without it.
I don't think it directly implements everything you want, but you might want to look at the 3D graph control on Code Project. This is hardly unique though -- you might want to Google for something like "opengl activex" and look at some of the alternatives. I doubt any will directly implement all you've asked for -- they'll probably include most of the basic operations, but it'll be up to you to make the connection between the mouse operations and the actions in the window.
Many animation effects are simply gratuitous eye candy -- however, there are situations where animations effectively communicate to the user what's going on.
What are some of your favorite uses for animations, and what specific animation type would you use?
E.g.: Animate items downwards when a new item is inserted into a list
I really like Google Chrome's use when a file is being downloaded. It's hard to describe, but, it's a circle that fills like a pie chart as the download progresses, and the circle is overlaid with the icon for the file you're downloading. Very slick.
One example I can think of is the animation used by operating systems when you minimize a window.
Both Microsoft Windows and Apple OS X animate the window going down to the taskbar (or the Dock in OS X) to show the user where the window went. Otherwise novice users that hit minimize by accident might have trouble getting the window back.
I don't use linux, but I'm pretty sure it does the same. I'm not being discriminative =)
From enjoy3d.com
enjoy3d.com http://worldsware.com/images/mouse.gif
Press your mouse button
and move to look around.
There is a very nice paper by Ben Bederson and Angela Boltman in which they evaluate the impact of animation on user’s ability to build a mental map of the information in the space:
Does Animation Help Users Build Mental Maps
of Spatial Information?
I believe that all visual changes should not be swift. Be it status notification, window maximized/minimized, or data deleted/added. I cannot find a reference, but usually it is recommended that all animations should not be around 1-2 seconds, matching human's response time.
My favorite uses of animation is not in a commercial software (though Apple is good at this) but a research paper called Phosphor which I consider one of the great UI ideas that have not yet implemented into major operating systems.
AJAX loading gifs - you've got to have an indicator that you definitely registered an event and you're doing something about it
Progress bars are nice for things that take more than a moment or two, but only when they are accurate. An inaccurate progress bar is worse than none, in my opinion.