Getting the PDI* and using the USplineComponent::Draw() Method

I’m building a set of tools that relies on editing splines and manipulating spline meshes at runtime which is coming along nicely. Currently to visualise my splines I’m just using the HUD DrawLine() method to draw a straight line between each spline point which is pretty crude.

Before I spend lots of time refining this so it interpolates correctly along the curve I’d like to try using the USplineComponent’s Draw() method but this requires me to pass in a pointer to an FPrimitiveDrawInterface and a pointer to an FSceneview

Does anyone know how to access these at runtime?