I'm asked to do an app with a 3D object mapped on a tag on the camera preview. The user should be able to rotate the 3D object on swipes, and to click on different area of the 3D object.
I'm investigating the different way to do it.
So far the best option I've found seems to be https://developer.vuforia.com/resources/sdk/unity, but I can't find whether it's possible to interact with the 3d model (rotate on swipe, define clickable areas).
Has anyone any experience with that?
I guess I can do it with some OpenGL, but I have no experience with it and it seems quite complex to start off with.
Is there any other library I should consider?
I would use OpenGL and start by the training tutorials on http://developer.android.com/training/graphics/opengl/index.html. Hope this helps! If you follow these tutorials you will be able to do what you want. ive tried unity and it is a really good engine too. and of course you can make an object clickable with unity! maybe using unity would be easier but the documentation on opengl is huge and is not that difficult to implement at least with first steps. hope this helps
The Metaio SDK can do all of that but I am not sure if it automatically provides the area of the model tapped, but you could ask here.
Related
I am trying to find approaches on stamping multiple textures on an object (3D .obj) Android. But, I am unable to do so, I have tried min3d but not sure if it is the right way to do it?
Is there anything available around which is similar to this? Or How Should I approach this UI? Below is the UI of model and how I want to stamp an "image"/texture on it, in addition I want to change the color of the model / add text on it.
In addition, I am planning to give touches on it, by stamping username/label/textview at the back of the model by using rotation through touches.
Please guide, which SDK should I use on Android, what is the best approach to do it.
What you want is basically just rendering textures on a given 3D mesh, as far as I can see. You could take multiple approaches for this: The simplest being just texturing the actual object, but a more complicated approach could involve rendering the object and "stamp"&text textures separately, giving the illusion of being overlayed (Not preferable though, as this will be difficult to manage correctly).
For texturing, you can either attempt rendering different textures after each other (First the background, then the stamp, then the text), or combining the different elements into one texture (pre-processing) before rendering.
I recommend having a look at the following posts and articles:
OpenGL ES (which can do everything you want to do, but has a decently steep learning curve)
Switch to a different 3D rendering engine if you find it too difficult to use your current one (Many options, although most are fullblown game engines)
Loading 3D objects and textures for OpenGL ES rendering
Check out the following git snippets and articles on texturing in min3d: this, this article, this article on object loading
You did not provide any code displaying your current attempts, so it is difficult to say what exactly your problem is, and how to solve it. If you edit your question you might receive more concrete solutions besides just links to potentially helpful resources.
Perhaps working with the OpenGL ES 2.0 api might be an option. Take a look this repo here called the Android 3D Model Viewer which makes use of it, it might help you out.
My thesis is to create an 3D android game. I have installed the 3D softwares like 3DS Max, ZBrush, Blender. I also downloaded Android SDK for Windows and I have Eclipse Juno. But I don't know how to start. Thank you in advance. :)
If you want to write a game, use a game engine.
I would advice against using OpenGL directly if you want to focus
on game mechanics or story. 3D game engines like
Unity or JMonkeyEngine
give you all the tools you need to turn your 3D assets into a game:
Importers for various file formats, a scene graph,
math libraries, and usually tons of example projects that get you
started quickly.
If you want to write a rendering engine, use OpenGL
With OpenGL you can build everything mentioned above yourself: Write
or find importers for your assets, figure out a lighting model, write
a scene graph. If you want to do all that, cool, use OpenGL. But
doing this technical stuff will keep you busy; you will have less time
to make a really great game.
I prefer OpenGL ES for Android. Good performance and easy enough to learn.
It's better to start from basic with opengl and then understand concept of using 3d and then prefer standard tool to use.
I have listed android game engine tool for 2d and 3d. Hope it might help u.
https://stackoverflow.com/questions/17163446/what-is-the-best-2d-game-engine-for-android/17166794#17166794
Start with unity3d which is a game engine, I am not sure but the names that you have posted are used for making 3d models for the game.
Your Thesis? That's pretty broad scope! :)
What I would be looking for, is something with lots of example code (since you say you don't know where to start) and good community involvement (ditto the start thing).
If you only need a single player setting, then I would suggest libGDX as a place that would be a good jumping off platform, as there are lots and lots of step thru tutorials along with lots of example code (and a very up to date wiki on the API), and a pretty good group at helping out with issues.
Since it is open source, you can dig as deep as you want into the inner workings to understand (or be mystified like me) as to how the code is accomplishing whatever task you are looking at. (which might be handy for your thesis)
While it might not be quite as polished as some other commercial 3d development kits, the BadLogic crew has made some very big progress the past few months on the 3d side of the house, along with breaking my JSON code... thanks! :) )
This may be a duplicate question, but none of the questions I found were exactly what I had in mind.
A friend and I want to create an App that lets the user play around with 3D objects on the screen. My friend is creating the objects and the animations in Blender or Maya. Therefore, the possible animations will be preset (not being programmatically animated). I have no experience in 3D programming and I naively suggested that he render the animations in Blender and send me all the frames. I would then play the appropriate animation by quickly running through all the frames. Each animation would leave the object in its original position so that it would be ready for the next animation.
Now that I've been thinking about it, that's a lot of images that I have to store in order to make this work. For every object, I would need to have all its frames for all of its animations, which maybe overkill.
Is there another way to play animations in an Android app? I considered just saving the animations as videos and playing them, but that would look horrible for our purpose.
I'd suggest min3D
Take a look at the animated troll example they have.
There are a lot of 3D libraries for Android. I would recommend AndEngine. Alternatively, you can just use the native OpenGL compatibility. Instead, ask him to send you the actual 3D files. Then you can use a library to render them.
EDIT: I just found this link. It'll probably help you. In my opinion, you should go through it and learn the whole package instead of just glancing a bit for this one little project; it'll help in the future.
Yes, there is a way you can manupulate the models you created in Blender. here is an example which uses Open GL in android to animate a 3D model created in Blender Check This Video Out. However it animates the object programatically, frame animation is indeed not worth if you wanna create animations that are long as you will run out of memory quick.
I'm looking for a 'basic' AR SDK that allows me to draw images and 3D shapes around the user (no matter where he is). It would be even better if the SDK includes a simple way to detect interaction with the shapes (something like onClick).
I made a project from scratch on Android but there's still a lot of work to do and I'll need to do the same on iOS after... So that's why I'm looking for an SDK or a similar project (no matter what platform).
I tested Metaio but it's quite expensive and maybe overkill for my purpose because it uses LLA coordinates.
I tested DroidAR on Android but it's only for Android and it looks heavy too (don't need the GPS).
How about Qualcomm's Vuforia? I was able to quickly get a sample project running on it.
EDIT Looks like I was wrong about what it could do. According to this (which is slightly dated, so who knows) Metaio might be your only choice.
i really don't sure what you really want to do ..but if you simply show images or 3d models on camera without any detection you can achieve this very easily i am explaining for Android and you can extend it to ios on same logic.
first approach:
you have to use custom camera of Android in your app,then use any game engine as per your need..i will suggest Jpct-ae or Rajawali
they are very simple to integrate and can be used for 2d images and 3d models.
this tutorial will explains a lot
keep the gl-surafce transparent and you can have model floating in space ...
second approach :
to add some more effect to your AR app you can use sensor values to move model in 3d space as per movement of device..it gives a cool effect.
use first approach and additionally collect sensor values and apply that matrix to gl camera of your game engine..for sensor values follow here
good tutorial here..
i hope this may help you..i done these a long time ago but try to help if you want..
I am looking to create a 3D scene for Android devices.
I do not know where to begin, so help would be appreciated.
I, basically, need to create the 3d scene (what to use?) allow objects to be added or removed from the scene, and have an SDK to load and display the scene on an Android device.
I know all this would be ideal in a single resource, but I know I will have to adapt function calls to JNI/Android OpenGL.
Any help for how to get started or where to begin research would be appreciated.
PS. I will use a viewport to look into the scene from different perspectives.
Maybe you are looking for something more advanced but processing.org is a great place to start if you just want to use Java.
There is a Processing.org IDE for Android and you can use a plugin for eclipse.
There are a lot of great 3D modelling libraries that are easy and fun to use but also really good.
Here are a few links that may help if you think it's worth looking at.
One of many cool videos showing what you can do with processing.org
A less cool but interesting demo
Some libraries
The processing Android Wiki
Follow the links...
http://developer.android.com/guide/topics/graphics/opengl.html
http://www.droidnova.com/android-3d-game-tutorial-part-i,312.html
Tutorials and libraries for OpenGL-ES games on Android
http://www.enfis.it/archives/14