Howto create a curved Tube/Plane


i am searching for a way to draw between two points(x,y,z), where y is equal in both points, a curved (+y) tube or plane. it should look like a part of a circle, like the trajectory of a ball. Additionally i want to be able to change the color, effect,and the hight of the curve. such that i have a node which takes two input points and a hight for the middle. is there something like that available or how can i model something like that.

look for the curve shader here:


i have found b-spline and got into it. it is producing exactly what i need but on the helper pin in ex9 layer, which i do not really know how to use it to draw a tube.