Addon Name:

Polygon Smoothing Groups

Blender Version:

Supports Blender version 4.2.0

Addon Version:

Beta version 0.9.0

Author:

3D CADence

Description:

This addon provides tools for managing polygon smoothing groups in Blender. It includes features for assigning groups, managing sharp edges, seams, and shading operations.

Location:

• 3D View > Tool Shelf > Polygon SG tab.

Key Features:

1. Assigning and Managing Smoothing Groups:

• Buttons numbered 1 to 32: Manually assign the selected polygons to the corresponding smoothing group.
• Select By SG: Opens a dialog to select polygons by their assigned smoothing groups.
• Select Non-Groups: Selects polygons that do not belong to any smoothing group.
• Select All Groups: Selects all polygons that belong to any smoothing group.
• Clear All Groups: Clears all smoothing groups from selected polygons or, if no polygons are selected, from all polygons.

2. Angle-Based Grouping:

• Group by Angle: Assigns polygons to groups based on the angle between their normals. Users can specify the angle threshold (configurable in degrees).

3. Managing Sharp Edges:

• Apply Sharp Edges: Applies sharp edges to the selected elements.
• Unsharp Selected: Removes sharp edges from the selected elements.
• Sharp All Edges: Applies sharp edges to all edges of the model.
• Unsharp All Edges: Removes sharp edges from all edges of the model.
• Select Sharp Edges: Selects all edges marked as sharp.

4. Managing Seams:

• Apply Seam: Marks the selected edges as seams.
• Unmark All Seams: Removes seams from all edges of the model.
• Unmark Selected: Removes seams from the selected edges.
• Mark All Seams: Marks all edges of the model as seams.
• Select Seams: Selects all edges that have been marked as seams.

5. Shading Operations:

• Shade Smooth Selected: Applies smooth shading to the selected polygons.
• Shade Flat Selected: Applies flat shading to the selected polygons.

6. Convert Selection to Border:

• Convert Selection to Border: Converts the selection of polygons into edges, highlighting the boundary edges of the selected polygons.

Hotkeys:

The addon includes predefined hotkeys for quick access to key features:

• Shift + Alt + Ctrl + F1: Toggle Auto Sharp and Smooth.
• Shift + Alt + Ctrl + F2: Toggle Auto Seam.
• Shift + Ctrl + Alt + R: Assign a unique group.
• Shift + Ctrl + Alt + N: Select polygons with no group.
• Shift + Ctrl + F4: Select By SG (Select by Smoothing Group).
• Shift + Ctrl + Alt + X: Clear all groups.
• Shift + Ctrl + Alt + E: Apply sharp edges.
• Shift + Ctrl + U: Unsharp selected edges.
• Shift + Ctrl + F7: Sharp all edges.
• Shift + Ctrl + F8: Unsharp all edges.
• Shift + Ctrl + H: Select all sharp edges.
• Ctrl + Alt + F: Apply seams.
• Ctrl + Alt + U: Unmark seams from selected elements.
• Shift + Ctrl + F1: Mark all edges as seams.
• Shift + Ctrl + F2: Unmark all seams.
• Shift + Ctrl + F3: Select seams.
• Shift + Ctrl + F5: Apply smooth shading to selected polygons.
• Shift + Ctrl + F6: Apply flat shading to selected polygons.
• Shift + Ctrl + Alt + B: Convert selection to border.

Settings:

• Auto Sharp and Smooth: Automatically applies sharp edges and smooth shading when assigning a group.
• Auto Seam: Automatically marks edges as seams when assigning a group.