[Papervision3D] Peter Kapelyan: Moving camera in Ninja Demo

[laurent]

It will be for 10 objects on the scene.
I can take the min and max X object to choose a center, idem fo Y, Z is 
not needed.
It looks easier now. not 120 for sure :)


laurent a écrit :
> Thanks a lot,
> I just moved for happy hour, I'll read, ...understand that tomorrow.!
>
> cheers
> L
>
> Peter Kapelyan a écrit :
>   
>> It can be done many ways,
>> I tried first with one onject (for a game), then with two.
>> Obviously my case is specific because I needed it for a game.
>> If all you need is to look at two objects smooth the code is simpler.
>> If you need three objects - harder? etc..
>> I can try to explian here - but if that is not good enough I'll need 
>> to know more what you want to do or just do it for you :)
>>  
>> #1 need to add some null objects - nulls help control the camera 
>> behind the scenes
>>
>> #2 If you just want to look at two (more) objects - first make sure 
>> you lookAt something that is in the exact middle of them. For instance 
>> (with two):
>>    ZcenterZ.x=(NinjAX.x+NinjA.x)/2;
>>    ZcenterZ.y=mainYVAR;//locks Y but can be like above...
>>    ZcenterZ.z=(NinjAX.z+NinjA.z)/2;
>>
>> #3 Now you have to look at that object but from a 90 degree angle 
>> (ALWAYS!!!) , and moveBackwards enough to see both with a NULL, then 
>> finally tween the
>>     
> yes my plane looks 90 degree twisted
>   
>> camera into that null.
>> Other wise instead of the null looking at the center - you can use 
>> camera if you don't want smoothing/tweened movment)...
>>  
>> #4 Use Tweener or a simple smooth function between the null your 
>> camera...or in any fasion to create a smooth motion somthing easy? like=
>>
>> camera.x-=(camera.x-Zcamm.x)/9;//Zcamm is my null
>> camera.y-=((camera.y-Zcamm.y)/9);
>> camera.z-=(camera.z-Zcamm.z)/9;
>>
>> where 9 is how smooth it moves= 1 should stick to object or something 
>> like 120 would take forever to get to the null :)
>>
>> Hope any of this makes sense....or helps!
>> -pete
>>
>>  
>>  
>>  
>>  
>> On 7/1/07, *laurent* <laurent at logiquefloue.org 
>> <mailto:laurent at logiquefloue.org>> wrote:
>>
>>
>>     It can be more clear perhaps.
>>     I looked in your panorama code, will get the movethecam() first. Then
>>     it's the idea of always having some object in the view of the cam that
>>     interest me.
>>
>>     thx
>>     L
>>
>>
>>     laurent a écrit :
>>     > Hey Peter,
>>     >
>>     > I'm trying my first none tutorial scene in PV, that needs some
>>     smooth
>>     > camera movement.
>>     > Zeh's bezier tweener lib sounds the tool to use as soon as
>>     possible to
>>     > master it.
>>     > But perhaps there's a simple way to have one camera always
>>     showing the
>>     > scene as in your Ninja Demo, perhaps I can use the tween class
>>     mixed
>>     > with your code to have that camera movement.
>>     >
>>     > Can you make a piece of code available or the path to a tutorial
>>     about
>>     > this basic camera movement ?
>>     >
>>     > thank you!
>>     > Laurent
>>     >
>>     >
>>     >
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