We have initiated the development of objects for the computation of human movement primitives within Max/FTS, believing that it will lead to gestural interfaces that will reduce the cognitive load for simultaneous multidimensional control tasks such as in sound design. Focussing on empty-handed gestures for a shape manipulation task called sound sculpting, where shape features are mapped to timbral parameters, we have programmed Max/FTS objects for interfacing serial peripheral devices such as sensors, objects for geometric and kinematic computation and objects for the computation of features of human body parts. Further work is necessary to define shape operators that modify the virtual object shape and shape features that can be mapped to timbral parameters. We hope to show through experimentation that shape features can be meaningfully mapped to sound parameters.