forked from 1b-agent/opencadstudio-upstream
Hakan SevenandClaude Opus 4.8
5bd683cf4e
MLINE dashed elements were fully CPU-expanded (apply_along) — one wire per dash — to keep the parallel lines in phase. Move pure-dash elements onto the GPU dash shader and end-align every element to the multiline's centre-line so they share one interior phase. - wire_distances now accumulates arc-length from the double-single (high+low) points, so the dash phase stays precise at UTM coordinates. f32-high-only deltas quantised ~0.1 there and drifted the parallel lines apart — the original reason MLINE dashes were CPU-side. - New WireModel.dash_align_end carries a shared begin/end dash length. The shader uses it as align_end for every parallel element (the interior phase depends on align_end, not the wire's own length) while align_total stays the element's own length, so each still ends on a dash at its own endpoint. - MLINE tessellation derives that length once from the centre-line, routes pure dash/space/dot elements to the GPU pattern and text-bearing elements to apply_along. - apply_along gained an "A"-type mode (shared reference length): a solid begin/end dash and a phased interior, so its dashes — and embedded text — line up with the GPU-dashed sibling elements instead of tiling from start. Pure-dash MLINEs now cost one WireModel + pattern per element instead of N segments; single (non-MLINE) entities keep the from-start tiling unchanged. Co-Authored-By: Claude Opus 4.8 <[email protected]>