New: Place Ring Mode

Video: https://youtu.be/FQcFKhMepgM

A new Draw Quads mode for retopologizing tube-like forms (arms, legs, fingers, necks) with more control than a continuous drag.

• Click a path for the cylindrical form instead of dragging. Place a handful of points across the surface; Quad Maker fits a smooth curve through them and builds a ring-based quad sleeve along it.
• Edit before you commit. After placing points, review and adjust the whole path: drag points, insert new ones by clicking the curve, extend from either end with Ctrl+Click, or delete a point by holding X and clicking it (the cursor shows an eraser icon so you always know what you're about to remove).
• Per-point loop density. Hold Shift+F on any point to pack rings tighter around a bend or joint, useful for better deformation when rigging.
• Resize anytime. Press F (or use the arrow/bracket keys) while placing or editing to change ring spacing along the whole sleeve.
• Clearer preview. A dashed line distinguishes Place Ring's live preview from Strip mode's solid line, and the default preview color now matches Blender's own orange.

Improvements

• Accidental destructive keypresses fixed. Two issues reported by testers are resolved: Space no longer cycles modes (and silently discards your in-progress path) while a Place Ring path exists, and Ctrl+Z no longer does a full-path cancel while editing: it's disabled there instead, with a status message pointing to Esc or the new hold-X delete gesture.
• More robust ring geometry. Control points are now centered using a view-ray probe rather than surface-normal or neighbor-direction heuristics, fixing jitter and instability seen in earlier builds. Ring computation was also simplified to treat every ring independently, removing a continuity-check mechanism that could cause a single bad ring near a joint to cascade into neighboring rings.

Bug Fixes

• Fixed Esc/Right-click exiting Draw Quads entirely while the invoke key was still held in Place Ring mode.
• Fixed the arrow/bracket resize keys not working correctly in some modes.
• Fixed seam twist and off-center cross-sections in ring geometry.
• Fixed a joint-gap issue where rings could separate near sharp bends.
• Fixed Enter/right-click losing in-progress placement instead of finishing it.

Documentation

A full Place Ring guide covering placing, editing, per-point density, ring resizing, and the delete gesture, plus new screenshots and GIFs throughout.

Known Limitations

• Points placed directly on ambiguous joints (e.g. a shoulder) can produce a larger ring than expected: this is an inherent limitation of medial-axis detection there, not a bug.
• Sleeves are always open at both ends; there's no cap option yet (tracked in issue #65).