Adaptive Control Point Manipulation Technique for Free-Form Deformation Based on Gesture Interaction

Computer-Aided Design software predominantly employs feature-based parametric modeling, which restricts the expression of innovative design thinking during the conceptual design phase. Therefore, developing a 3D modeling method that supports free-form deformation through gesture interaction is a critical technology for constructing next-generation intelligent design systems. This paper proposes an adaptive manipulation method for free-form control points based on gesture interaction, conducts research on free-form deformation technology, elaborates on the principles of free-form deformation, and provides a comparative analysis of the basis functions and deformation tools for free-form deformation. Aiming at the issue of mapping amplitude between gesture movement speed and control point movement speed during the gesture interaction process, the study carries out research on the mapping modes between gesture and control point movement speeds, designs three mapping functions for gesture movement speed and control point movement speed, and evaluates the performance of the three mapping modes in terms of interaction efficiency and operational smoothness through a comparative experiment, obtaining the mapping pattern with the best interaction performance.