| Issue Category | Specific Problem | Impact on Output OBJ | | :--- | :--- | :--- | | | Tessellation of curved YDD surfaces is too coarse. | Faceted appearance instead of smooth surfaces. | | Topology | Non-manifold edges and duplicate vertices. | Broken shading, slicing failures, and rendering artifacts. | | Materials | YDD materials mapped to OBJ .mtl incorrectly. | Missing textures, wrong specular/roughness values. | | Units | Assumes YDD units = meters (but OBJ is unitless). | Scaled objects (microscopic or planetary size). | | Metadata | Layers, colors, and hierarchies discarded. | Loss of editable component separation. |
There is no single standalone "YDDtoOBJ.exe" that is universally "better" because the format is too complex for a simple script to handle perfectly every time. ydd to obj converter better
YDD files contain geometry, but textures are typically stored in separate | Issue Category | Specific Problem | Impact