Optimizing 3D Models

When working with 3D models in GraphWorX, performance issues can arise if models are too complex. Large models containing excessive vertices, triangles, and objects may not render smoothly. To improve performance without sacrificing too much detail, consider the following optimization techniques before importing your model:

1. Reduce Polygon Count

Reducing the number of vertices and faces can significantly enhance performance. Use Blender’s Decimate Modifier to lower polygon count while preserving shape. The modifier can only be applied per object, but it can be linked to multiple objects.

Learn more: Blender Decimate Modifier Documentation.

2. Use a Low-Poly Version of the Model

CAD models (such as industrial robots, machinery, or equipment) often exist in multiple detail levels.

Finding Low-Poly Alternatives

  • Request from model owner: Ask for simplified or "visualization-ready" versions
  • Check manufacturer websites: Many provide both detailed CAD and simplified visualization models
  • Model libraries: Look for pre-optimized versions on 3D model marketplaces

Creating Your Own Low-Poly Version If no low-poly version exists:

  1. Use reference images to model basic shapes in Blender or similar software
  2. Focus on overall form rather than fine details
  3. Maintain recognizable features that are important for identification

3. Remove Unnecessary Details

CAD and BIM models often contain excessive details (e.g., pipes, bolts, nuts, welds) that are not essential for visualization. Removing these details can optimize performance.

4. Reduce the Number of Objects

Delete unneeded objects or merge/join multiple objects together to simplify the scene.

5. Reuse Materials

Some 3D models assign unique materials (colors, textures) to each object instead of reusing existing ones. Consolidate materials to reduce complexity, especially for models exported from CAD/BIM applications.