This study presents a software-based projection system that integrates stereoscopic projection techniques to enhance the visualization of deformable mechanical structures. Utilizing MadMapper software, the system employs both 2D planar projection and 3D volumetric projection methods to achieve content projection and seamless integration of virtual and physical elements. The 2D planar projection approach involves decomposing a 3D model into multiple planes and projecting textured surfaces onto target regions of the deformable structure through corner point registration. Conversely, the 3D volumetric projection treats the 3D model as a whole, aligning it with the deformable structure via rotation and scaling transformations. Experimental results demonstrate that combining planar and volumetric projections effectively enhances the representation of complex 3D scenes; for instance, ground textures can be rendered using planar projection, while architectural elements are depicted through volumetric projection. This hybrid projection strategy offers a flexible and efficient solution for dynamic visualization in applications involving deformable mechanical systems.