[helpfile addition] Add details to addSphereSceneNode() doc

[miko93]

Hello,

I'd like to propose to add the following text to the docs of addSphereSceneNode() in the helpfile.
It was given to me by vitek here:
http://irrlicht.sourceforge.net/phpBB2/ ... hp?t=25575

Code: Select all

The value polyCount that you are passing to addSphereSceneNode() is not the total number of polys to use to make the sphere, it is the number of polys per row/column of the sphere.
Imagine you had a sphere with 16 rows and 16 columns and unwrapped it into a grid. The total number of cells in the grid would be 16 * 16 = 256. Now imagine that each cell of the grid is made of two triangles [primitives]. The total number of primitives for your sphere would be (16 * 16) * 2 = 512. More generally, it would be (polyCount * polyCount) * 2.

Thanks

[MasterGod]

I also think so.
And I think it should be moved to the open discussion forum.

Oh and why did you mentioned "triangles"?

Now imagine that each cell of the grid is made of two triangles [primitives]

[hybrid]

No, this is the correct forum, he means to add some words to the API docs.
BTW: Yes, seems a good addition. The CSphereSceneNode uses polyCountX and polyCountY or something like that, so it's more obvious that it's not the total count. But for the scene manager it's pretty misleading.

[vitek]

Oh and why did you mentioned "triangles"?

Because primitives aren't always triangles.