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.

Region quick-tag

In Edit Mode, two buttons appear at the top of Safety & Regions: Protect and Focus. Tag the current face selection directly without entering the full region tagging flow. Requires Region Source = Tagged Faces.

Smart Region Inheritance

When 2 or more objects are selected, a Copy Regions from Active button appears in Safety & Regions. It copies Protect/Focus/Transition tags from the active object to all other selected meshes by matching faces on normal direction, UV seam presence, sharp edge presence, and area signature. Use this to propagate a hand-tagged region setup across an entire prop library in one click.

Region Preset Library

Save and load region configurations as named .qreg files. The Load/Save row is always visible at the top of Safety & Regions. Six built-in presets are included:

• Vehicle
• Character
• Prop
• Building
• HardSurface
• Scan

Custom presets are saved to your addon directory and persist across sessions.

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.
• Smart Region Inheritance requires faces that have clear normal, seam, or area signatures to match — it may miss faces on highly uniform meshes.