Semi-Manual Regions

Semi-Manual Regions let you control how aggressively different areas of a mesh are processed during quadification and optimization.

When enabled, Quadify processes regions in multiple passes rather than treating the mesh uniformly.

Region types

Protect

Protect regions are excluded from aggressive operations. These faces are processed last and with conservative settings.

Typical uses:

• Silhouettes
• UV seams
• Hard edges and creases

Focus

Focus regions are processed more aggressively than the rest of the mesh. Quadify uses a higher effective angle limit in these areas.

Typical uses:

• Flat or planar surfaces
• Interior areas with low visual importance

Transition

Transition regions blend between Focus and untouched areas. They help prevent abrupt topology changes near protected zones.

Processing order

When Semi-Manual Mode is enabled, Quadify runs multiple conversion passes:

1. Focus regions (highest aggressiveness)
2. Transition regions (moderate aggressiveness)
3. Remaining faces excluding Protect

This staged approach reduces topology artifacts near protected areas.

Common issues

• Overusing Focus on curved surfaces can destroy flow.
• Forgetting to preview regions can lead to unexpected changes.