Irrlicht Engine

Sorry that I'm bothering again, but there's another issue with the plane. Some of the spheres on the picture are supposed to be intersected by the plane (the big white thing) since their centres are on that plane, but they aren't. Any ideas?

Thank you very much, that fixes it . I had forgotten that the horizontal plane is OXZ, not OXY.

Here is what I did, but I guess I made a mistake somewhere, because the plane does not intersect some spheres which represent points which should lie on that plane. a, b and c are the coefficients in the equation a*x+b*y+c*z+d=0. In this case d=0.
core::vector3df l(0,1.0f,0),p(a,b,c);

core ...

Much thanks. I only have one other question: how can I draw it on the screen - the ISceneManager class does not seem to have any function to suit this need (or I just don't know ho to do it...)

Hi, I have to draw a plane in IrrLicht, the problem is that the plane is defined with its analytical components: a,b,c,d in the equation a*x+b*y+c*z+d=0. My question is how exactly can you do this in IrrLicht. I guess the obvious choice is to create a flat plane and rotate it, but I don't know how ...