Need for a scale animator?

piiichan · Post by **piiichan** » Thu May 01, 2008 1:33 am

Why Irrlicht doesn't have a scale animator?

I think it could be useful....

twilight17 · Post by **twilight17** » Thu May 01, 2008 1:44 am

I think it would be cool to have, but I don't absolutely need it. Could be useful

huydotnet · Post by **huydotnet** » Thu May 01, 2008 3:59 am

what does it mean?
scaling scene node with animation?

piiichan · Post by **piiichan** » Thu May 01, 2008 4:17 am

A scale animator would allow a scene node to change its scale in a smooth fashion over a user supplied period of time.

In that way, scene nodes could grow or shrink.

For example, a billboard representing an explosion could grow at first, and then shrink before completely disappearing.
The same could be useful with smoke and water ripples.

huydotnet · Post by **huydotnet** » Thu May 01, 2008 4:56 am

i understand now

i think you can do it your self without any scale animator

try to scaling your node in mainloop
for example

Code: Select all

float i;
//...
void mainloop()
{
 if (i<=5) i+=0.5; 
 node->setScale(vector3df(i,i,i));
}

that's my idea, un-tested!

piiichan · Post by **piiichan** » Thu May 01, 2008 5:18 am

Yes, that's the idea

But the question is not whether it is doable or how to do it. (which by the way can become a bit more complex if you have to follow the state of dozens of nodes for the x,y,z scale factors)

The question is:
should Irrlicht propose directly an animator for dynamic scaling?

So people wouldn't have to implement it themselves again and again, reducing the workload and the number of bugs in their programs.

There are 3 transformations in space:
1) translation
2) rotation
3) scaling (no animator)

Scaling is the only one not to have an animator yet.

MasterGod · Post by **MasterGod** » Thu May 01, 2008 10:19 am

I'm sorry but I can't understand why can't you do it yourself and post a patch?

Halifax · Post by **Halifax** » Thu May 01, 2008 11:54 am

Yeah, I think that would be cool. And, MasterGod, I think he is just throwing the idea out there for someone else to pick up, and possibly provide a patch.

I never had a use for a scale animator, but I guess some people would, as he pointed out.

piiichan · Post by **piiichan** » Fri May 02, 2008 1:39 am

MasterGod wrote:I'm sorry but I can't understand why can't you do it yourself and post a patch?

I repeat:
The problem is not how to do it!

My question is:
Would you (users of the Irrlicht engine) like Irrlicht to let you use a scale animator just like any other animator already available.

How to implement it is not my problem. I'm just wondering if there is a real need for it among the users of Irrlicht... If nobody needs it, it is not worth put any effort into it.

Do you follow me?

MasterGod · Post by **MasterGod** » Fri May 02, 2008 1:54 am

Halifax wrote:Yeah, I think that would be cool. And, MasterGod, I think he is just throwing the idea out there for someone else to pick up, and possibly provide a patch.

I never had a use for a scale animator, but I guess some people would, as he pointed out.

Yeah

It can be a cool thing to have.

P.S
piiichan: *Using IrrAI* - Following... *Found You*

huydotnet · Post by **huydotnet** » Fri May 02, 2008 4:43 am

IrrAI, T_T, it's only support irrlicht 1.31, isn't it? (sorry because my bad english )

Scale Animator...
then, will Irrlicht 1.5 have this feature?

great idea!

hybrid · Post by **hybrid** » Fri May 02, 2008 11:07 pm

There are probably several useful scene animators, provide them to the irrExt project

Irrlicht Engine

Need for a scale animator?

How useful would you rate the presence of a scale animator in Irrlicht?

Need for a scale animator?