Rotation localTransform problem [SOLVED]

[rasq]

Hi, i have problem with kLocalSpace, when i trying rotate object on it.

Iam using OSV sample, to rotate, transform and zoom. But on this sample i can only rotate like this:

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object.setRotation      ( this.getObject ( ), 0, curAngleX, 0, object.kGlobalSpace )
    object.rotate           ( this.getObject ( ), curAngleY, 0, 0, object.kLocalSpace )

In data i have compute like this:

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   this.nDstAngleX ( this.nDstAngleX ( ) - nDeltaX * 90 )
    this.nDstAngleY ( this.nDstAngleY ( ) + nDeltaY * 90 )
   
    if ( this.bCameraRotationClamped ( ) )
    then
        this.nDstAngleY ( math.clamp ( this.nDstAngleY ( ), -80, -10 ) )
    end

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local curAngleX     = math.interpolate ( this.nCurAngleX  ( ), this.nDstAngleX  ( ), 10 * dt )
    local curAngleY     = math.interpolate ( this.nCurAngleY  ( ), this.nDstAngleY  ( ), 10 * dt )

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    this.nCurAngleX  ( curAngleX  )
    this.nCurAngleY  ( curAngleY  )

When i changed:

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object.setRotation      ( this.getObject ( ), 0, curAngleX, 0, object.kGlobalSpace )

to

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object.setRotation      ( this.getObject ( ), 0, curAngleX, 0, object.kLocalSpace )


rotation cant stop, an if i change

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setRotation

to

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rotate

, i have this same effect when im use

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kLocalSpace

.

Please help me with that.

[rasq]

Anyone??

[broozar]

why do you change from global to local space in the first place, what is your goal.

your rotation issue is easily explained. curAngleX will cause problems in local space - my understanding is this: in local space, the rotation is reset after each frame. so after one bit of rotation per frame, your object will have a rotation of 0,0,0 in local space. curAngleX is computed by math.interpolate ( this.nCurAngleX ( ), this.nDstAngleX ( ), 10 * dt ) while nDstAngleX is compused of this.nDstAngleX ( this.nDstAngleX ( ) - nDeltaX * 90 ) , nDeltaX being the value your onMouseMove handler sends object.sendEvent ( application.getCurrentUserActiveCamera ( ), "OSVCamera", "onRotateBy", nDeltaX, nDeltaY ). in other words, this.nDstAngleX ( ) - nDeltaX * 90 assumes a global inertial system and will deliver an abolute angle value, a value that can never be reached in a local system because the coordinate system will get reset after every frame.

correct me if i am wrong.

ps: there are two ai models, osvMain and OSVCamera. have a look at both, the real stuff happens in the camera. i should explain this sample on the wiki, it's one of the few i have not yet managed to write some guide to.

[rasq]

Now:

Now

Untitled-1.png (29.57 KiB) Viewed 1626 times

and i need to achive this:

My Goal

Untitled-2.png (24.51 KiB) Viewed 1626 times

as You see pan, zoom and other translations are Global, but rotations of object are local.
I need that rotation radius will be only for rotated object (rotation point) will be his pivot, not scene point (0,0,0).

[broozar]

you can do both, actually. use object.lookAt() to aim the camera, object.rotateAround() to parent your camera to a pivot like the target object, and make one of the buttons switch camera modes to a "local rotation". "local rotation" works like the parented rotation (with .kGlobalSpace), you only have to fill in new (target) values and change the axis (you probably want to rotate around the y and x axis). have a look at FPVCamera.onEnterFrame ( ) and FPVCamera.onTurnHead ( nPointX, nPointY, nDeltaX, nDeltaY ) how it could be done.

[rasq]

Ok, thx, i will try this. But i need my camera looking at (0,0,0) all time, it will be problem??

[broozar]

How can it? Sounds impossible, from a Logic Point of View. The POS of the Cam and 0,0,0 Form a Straight line, if you are rotating the Cam While keeping 0,0,0 in View, you are bound to Change the Cam POS, which is exactly what the OSV has already.

[rasq]

And then im on start point of my problem.

I need camera looking all time in to (0,0,0).
Rotate object around its own pivot not a (0,0,0).

[broozar]

It's like you want a Car to take a turn whithout moving the steering Wheel, how can it work?

Maybe in your Case, maybe it Would Be enough to Move the Cam up and down White Running .lookAt on onEnterFrame?

[rasq]

Heare You have sample:

My goals:

1. When object is on (0,0,0) like now:
http://gorol.pl/1.ogg

2. When object is on other cordinates and camera look at (0,0,0)
http://gorol.pl/2.ogg

[broozar]

why did you post 2 sound files?

[rasq]

There are video files.

Maybe You must reneme ogg to ogv for Your player, but FF 3.5 play its.

[broozar]

ogv worked.

in movie 2, you are not really looking at 0,0,0 all the time, your camera spins full 360 degrees.
you can achieve this, as i mentioned, with the camera ai code provided by the FPS sample, if that is really what you want.

[rasq]

Yes, but on this videos, i dont rendered a background. It is very important that camere looks at (0,0,0) beacause all background will be changed on its movment.

[rasq]

And:
on 2rd movie camera cant spin full 360 degrees, its not possible to achive this animation by this way. On 1st movie, yes. You can rotate object or spin camera.