Here's a simple attempt at a phase distortion based variable sawtooth.
It differs from classical Casio-style PD synthesis because the phasor distortion node point can be moved not only along the X axis but along the Y axis to.
BTW i notice a slight pitch changing when the node X position is going toward the extreme left or right.
I don't really know the cause. Is it just a psychoacoustic effect because the harmonic content just grows?
Should i nest the whole thing in a subpatcher and use a [ block~ 1]?
Is [ expr~ ] not so precise or too cpu intensive?
Phase distortion synthesis and viariable sawtooth