How to show 3D path between two SCNVector3 points

Question

I want to show 3D path between two SCNVector3 points and want to achieve like below screenshot in iOS Swift. from below code shows only simple line between points

let indices: [Int32] = [0, 1]
let source = SCNGeometrySource(vertices: [vector1, vector2])
let element = SCNGeometryElement(indices: indices, primitiveType: .line)
SCNGeometry(sources: [source], elements: [element])

Answer 1

You can use a lerp (linear interpolation) to get points between the start and end nodes. You can factor in a percentage - like 10,20,30 to get those 3d positions in line between your start and end node.