[Help Request]Display a text over a SceneNode

I want to Display a text over a SceneNode (Like Name in Wow)

I have looking on the Wiki.. I found very usefull thinks like that:

http://www.ogre3d.org/wiki/index.php/MovableText
But it's in C++ and i can't translate it to C#...

Other way, get X,Y screen coord of a Mesh in order to display an overlay:
public static bool ProjectSizeAndPos(Camera cam, Vector3 pos, float rad, out float x, out float y, out float cx, out float cy)
{
Vector3 eyeSpacePos = cam.GetViewMatrix(true) * pos;
// z < 0 means in front of cam
if (eyeSpacePos.z < 0)
{
// calculate projected pos
Vector3 screenSpacePos = cam.ProjectionMatrix * eyeSpacePos;
x = screenSpacePos.x;
y = screenSpacePos.y;
// calculate projected size
Vector3 spheresize = new Vector3(rad, rad, eyeSpacePos.z);
spheresize = cam.ProjectionMatrix * spheresize;
cx = spheresize.x;
cy = spheresize.y;
return true;
}
else
{
cx = 0;
cy = 0;
x = (-eyeSpacePos.x > 0) ? -1 : 1;
y = (-eyeSpacePos.y > 0) ? -1 : 1;
return false;
}
}

but i didn't find way to use it correctly too....



Some Help ?

I have the same problem...

I am trying to rewrite the c++ code to c#. ( http://www.ogre3d.org/wiki/index.php/MovableText ).

help if sy has solution pls!

I'm going to have to the same thing soon.... unfortunately not just now, so I can't help too much, but I'll see if I can get a chance to flick through the C++ and give some pointers.

It would be also interesting to me (and many other users I think).

But I not even could port a smaller code. (I know only less about C++)
The most I have done for the Easy debug text snippit.
Here is my try (to a similar problem).
http://www.ogre3d.org/wiki/index.php/Mo ... ng_example

For your second way - maybe this will help you. It works with a ray query between the object and the camera.
http://www.ogre3d.org/wiki/index.php/MO ... ingExample

Hi Guys,

some good an some bad news

the good one first:

I finally made it to compile Mogre with the new class MovableText. (olee , was very painfuel^^).

the bad news:

i can see the text, everything looks good, expected the fuckin fact that the text always displays _BELOW_ the attached node -.-.

I really dont know why^^

anyway here is the compiled mogre version with movabletext class

http://www.file-upload.net/download-1133075/Release.rar.html

It's scanned with antivir, but feel free to scan it again (who knows? :8)


last but not least, little codesnipped to use it

Entity ent = base._sceneMgr.CreateEntity("Robot", "robot.mesh");
SceneNode node = base._sceneMgr.RootSceneNode.CreateChildSceneNode("RobotNode");
node.AttachObject(ent);
_camera.LookAt(node.Position);
MovableText msg = new MovableText("txt001", "Terminator","BlueHighway",4,new ColourValue(200,50,200));
msg.SetTextAlignment(MovableText.HorizontalAlignment.H_CENTER, MovableText.VerticalAlignment.V_ABOVE);//this seems useless,coz always below in game
msg.AdditionalHeight = 2.0f;

node.AttachObject(msg);


Bostich

//edit:
Oh it works like a charm :


msg.AdditionalHeight = 80.0f


will do the "trick"

very nice

Can you please publish your ported source code?
I would like to add it to the wiki.

The source code would be better than the compiled library.
Then it's independent from further Ogre versions and code improvements are possible. Also it's good to have, if someone made individually changes to the Mogre code and want to compile it with MovableText, too.


... oh, just in the moment I see that GermanDZ added a port of MovableText to the Wiki.
www.ogre3d.org/wiki/index.php/MOGRE_MovableText

Is this the code you used or did you do a second port?

By the way:

It's not recommended to use Ogre internal members (Sinbad told me that). Ogre internals begins with underscore (e.g. _sceneMgr)

So better store the reference to the SceneManager in a variable at creating and use the methods with it.
Use this code instead of that above:
// create
SceneManager sceneMgr = mRoot.CreateSceneManager(SceneType.ST_GENERIC);
Camera cam = sceneMgr.CreateCamera("Camera");
// ...
// use
Entity ent = base.sceneMgr.CreateEntity("Robot", "robot.mesh");
SceneNode node = sceneMgr.RootSceneNode.CreateChildSceneNode("RobotNode");
node.AttachObject(ent);
cam.LookAt(node.Position);

Hi Beauty,

Exclamation... oh, just in the moment I see that GermanDZ added a port of MovableText to the Wiki.
www.ogre3d.org/wiki/index.php/MOGRE_MovableText

Is this the code you used or did you do a second port?


Yes, i thought it was clear , sorry for that .




By the way:

It's not recommended to use Ogre internal members (Sinbad told me that). Ogre internals begins with underscore (e.g. _sceneMgr)

Thanks for the small hint, but i know that . i have written a simple base class from where i derive my code snippets... i know that _variable isnt really c# name convention, but i started with those names, and now its hard to forget about ....

Bostich

Thanks for the small hint, but i know that . i have written a simple base class from where i derive my code snippets... i know that _variable isnt really c# name convention, but i started with those names, and now its hard to forget about ....

Ah, you mean these are self defined vars. I thought these are Ogre internal members.

I am not sure, but MovableText was working fine.


But another approach to the same/similar case is keep an overlay text aligned to the proyection of the node over the camera.

I am not sure, but MovableText was working fine.
Yes your source works perfectly .

But another approach to the same/similar case is keep an overlay text aligned to the proyection of the node over the camera.

Will it also grow like the "fake billboard" ?


Bostich

anyway here is the compiled mogre version with movabletext class

http://www.file-upload.net/download-1133075/Release.rar.html

I wanted to test MovableText with my simple test application.
So I replaced the dll files with your ones and updated the dll link in Visual Studio.
But than I get a System.Runtime.InteropServices.SEHException.
OGRE EXCEPTION(7:InternalErrorException): Could not load dynamic library .\RenderSystem_Direct3D9. System Error: Couldn't find the called modul.

The file RenderSystem_Direct3D9.dll I also replaced with your one. With the old file it doesn't work, too.
My old files were Mogre 0.2.2 (Ogre 1.4.3). Your compiled files are version 1.4.8.
Any ideas?

Hey, it look fine :p

I'm going to test that soon.

Hey, it look fine :p
Can you take a screenshot? (or more than one) I would like to add it to the forum.
If you can scale your render window, maybe a small resolution (e.g. 300x200) would be better for the forum. Downscaling from big screenshots to small pictures decrease the quality.
You also can send it by e-mail to beautyod at gmx.de

Hi Beauty,

iam totaly sorry that i missed your problem

Have you tried it again to get this running?

I can post you an image this afternoon if you arent able to get this workin.

again, sorry that iam unable to see you post

Bostich

No problem for waiting

On yesterday I tried your files. There it didn't work.
The vc_redist 2008 patch is installed.
Maybe some other depencies are needed for newer Mogre versions?

Hi Beauty,

did you install the newest SP ?

And which version of VS did u run? Since 1.4.8 i run on vs 2008, cause get Mogre 1.4.8 running on 2005 was a nightmare -.-.

and on other dependencies - i cant remember exactly which i uses (tried soooo many )

If i got enough time today, i will send you a package with ALL dependecies i got in my application.

Bostich

For my target application I use VS 2005.
I also have VS 2008, but only the Express version.
The VS 2005 SP1 is installed.

Mogre itself I never compiled. (I know now this is configured for VS 2008.) I just use the libraries.

Don't worry, don't hurry. I have time

Hi again

i also have only 2008 express edition, just for info.

Hi Beauty,

a bit later then expected.

http://www.file-upload.net/download-1170115/dllBase.rar.html

Includes all dlls that i have ever used. includes also a simple screenshot of movable text.

Robot with name terminator


Bostich

Hi,

sadly the link below is dead...



http://www.file-upload.net/download-1170115/dllBase.rar.html

Includes all dlls that i have ever used. includes also a simple screenshot of movable text.


Has everyone the compiled dlls with MoveableText included? And can upload it somewhere?

That would be very nice. Until now i haven´t compile Ogre/Mogre from source and i would like to save the time for doing that.

Many thanks in advance

i use Movable text by bilboards with Mogre 1.71 . Its great but - move of text mirrored to move camera. When draw close to
the scene node with bb - this bb - is run and become small/ When node up - bb text go down.