how to compute VOLUME and surface Area of VRML objects?

Hi, I have some 3-d buildings (combination of cubic boxes) in VRML format. An example of buildings: http://3d-buildings-vrml.blogspot.ca/. I want to know how to compute the Volume and surface Area for each building?

I also want to project the building onto Z axis (for comparison purpose). But I notice a building in vrml format is with many triangles, some of them are inside the cubic, which is irrelevant and leads to mistakes. How can I delete the interior triangles but keep only the outline/edges?

Thank you,

Chris

Answer 1

[Azzi Abdelmalek]

From The image, we see that it's constructed using boxes, select each box, check its sizes, then calculate the volume of each box

[Chris zeng]

Thank you for your answer.

All the boxes come as a ENTIRE object in the vrml file. And it has represented by many triangles, Then how can I check the sizes of each box?

Also, I still need to simplify the triangles and only leave its edges.