Scale question

powerpop · Post by **powerpop** » Mon Jan 12, 2004 12:35 am

hi - how does scale work - is it a percentage or an absolute value - for instance if i have a 64x64x64 cube and want to make it 512x512x512 do i make the scale call as:

node->setScale(core::vector3df(4.0,4.0,4.0));

or

node->setScale(core::vector3df(512.0,512.0,512.0));

if its the first option i hope there is a way to get the exact bounding box of the object so i can calculate how to get from 64 to 512 - i had this problem in Ogre where they pad the bounding box for every object so there is no way to get a somewhat accurate size estimate on a model ...

DarkWhoppy · Post by **DarkWhoppy** » Mon Jan 12, 2004 1:06 am

I think its percentage... like node->scale(vector3df(2.0,2.0,2.0)); will scale a mess to twice its normal size.

Boogle · Post by **Boogle** » Mon Jan 12, 2004 1:10 am

Yes it is percentage. And to get exact scaling do something like:

Code: Select all

node->setScale(irr::core::vector3df(512.0f/64.0f,512.0f/64.0f,512.0f/64.0f));

In the case of 512 and 64, this is just 8.0f (64*8=512). For other numbers, it may work out to a non-round number and this method will always give as-close-to exact as you can get.