Rotating screen

[no_response]

Hi all,
I've been reading the forum for a while now, but I can't find a solution...

I'm trying to rotate the whole screen. I need to rotate it around a point, that is out of the screen.
I'm building 2d graphics with images.
I know it has something to do with matrix4, ETS_VIEW and stuff, but I can't get it work.

My last and most logic attempt was like

Code: Select all

matr = driver->getTransform(video::ETS_VIEW);
matr.setRotationDegrees(core::vector3df(0, 0, time%360)); 
driver->setTransform(video::ETS_VIEW , matr);

Some help would be appreciated.

[Bear_130278]

Rotate camera )))

[no_response]

camera rotation doesn't work when drawing images, right?

[Dareltibus]

assuming you know basic trigonometrics.

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irr::scene::ICameraSceneNode *mycamera=
    addCameraSceneNode(0, vector3df(x,y,z)), vector3df(tx,ty,tz));

// x,y,z are camera position
// tx,ty,tz is target point (lookinAt)

//now

mycamera ->setUpVector(vector3df(a,b,c))

/*is the up vector. so you must imagine a man holding a camera in his hands. It has the camera in one point looking at another point. but. Where is the head of the men heading (lol)?

This is the up vector. You have to update a,b,c values in time using trigonometric calculations.
Another way is for example setting a point rotating around your camera. Then you get the vector3df that is the position of the point after rotation. Then

upvector = (Pointpos-camerapos).normalize();

you have your up vector looking at this point... Maybe looking your scene rotaring will get you sick O_O

 */

[no_response]

I still fail to see how modifing a camera can affect drawn images....

[Dareltibus]

oh sorry i misunderstood that you was referring to pictures..

Idk know how to rotate images into the GUI. you can always create your own scene node taking inspiration from billboad scene node but making it rotatings and not staying up in one direction..

And have also to do set PROJECTIVE wiew instead of PErspective. but in this way this will be 3D masked as 2D.

[Bate]

The camera doesn't affect images, gui elements etc.

So, if you want everything rotated you could probably render to a render target texture, rotate the texture and draw it to the screen.

[no_response]

hi again....

I fail to rotate the camera, help ?

what I do is I create a node at 0, 0, 0
create a camera at 0, 200, 0
set the camera's target to 0, 0, 0

but when i try to rotate the camera like (0, angle, 0) it doesn't work.

what am I doing wrong?

[Acki]

try camera->bindTargetAndRotation(true); !!!

[no_response]

I did, and when I bind them when I try to rotate the camera my node just disappears.

It seems I will have to use the upvector.