volume of mesh from vertices?

[georage]

Has anyone figured out how to determine the volume of a mesh?

I have a parent and child mesh in this playground, but can't figure out how to determine the volume from the vertices of the combined mesh so went with this ugly kludge, but I don't even know how to make the playground output console messages.

I notice in testing that the parent mesh does have vertices saved, but I am not sure how to access them. (looks like _boundingInfo -> boundingbox -> vectors ??? )

http://www.babylonjs-playground.com/#1YODXL#4

I am attaching a jpg showing the object array returned in my testing ... can anyone tell me how to access the values? (and also how to make playgrounds show console.log messages?)

THANKS!

 

 

[Nabroski]

Hello 

i think @Wingnut will tell you more about it

Just shortly if you see underscore and name _name these are Protected members of a Class (or in Javascipt offen called an Object, same thing, maybe, you have to do you own research on this topic)
you don't have to access them, i would recommend as learning experience avoiding to access them, and find out through reading of tutorials, whats the actual function call that you need

to simpfy things, people wrote books about it:

console.log(box1)
box1 is a "Class" with many members
_boundingInfo is a protected member

you want to access one of them you have to go in though a dot

box1.boundingInfo()

i made a quick playground you can see, hopefully, what i do.

http://www.babylonjs-playground.com/#1YODXL#5

https://github.com/BabylonJS/Babylon.js/blob/9019f5d151943212e9602c1a6ed5b13800ed6ab2/src/Debug/babylon.debugLayer.js

[JohnK]

Showing console.log messages is done in the same way as you would do it normally in your browser of choice by opening the console from developer menu. Note that the PG adds new messages to the bottom of existing PG messages so clear the console before clicking on run.

[georage]

Thanks a lot guys.

Thanks especially for the playground Nabrowski, it tells me everything I need to know. I do appreciate you taking the time to demonstrate. 

 

[Wingnut]

Wingnut Inc... "tell you more about it" -dept... is on vacation in the Bahamas.  @Nabroski will be taking care of business while they're out partying.