forked from 1b-agent/fieldcraft-upstream
jyvikoandClaude Opus 5.5
52c12e2ad7
Boundary condition, load and interaction symbols are wireframes (thin lines, no shaded cones), so they never hide the mesh or a contour plot: - a crossed wire triangle per constrained translation, tip on the node, coming from outside the part where the set's faces say which side that is; a held rotation adds a smaller triangle behind it (the double mark); fixed shows all three axes, a symmetry plane only its normal; - forces as open-headed arrows ending on the node, as long as four support units at one place and 2.5 over a set, so loads and supports stay in proportion (#78); moments as an axis line and a right-handed curved arrow (#79); contact and tie surfaces as small squares on their faces; - a constant size on screen at any zoom (#80): the symbol unit is the size setting (View > Symbol size, `ui.set {symbol_size}`, 14 pt by default) times the model length a pixel spans, rounded to a quarter of a doubling; - spread evenly on a grid a few symbol units across, so their density follows the screen, never more than 400 per definition; - a layer of their own on the desktop (GPU and CPU): zooming rebuilds and uploads the symbols only, never the mesh's scene; framing leaves them out; - colour per kind from the theme's tokens (a new contact colour), and the definition selected in the browser drawn in the selection colour, wider; - depth-tested against the model with the line bias that keeps them on their own surface; a load at a reference point or a single node and a reference point's cross are drawn over the part (#78). Headless pictures (MCP screenshot, `ui.render`) frame the camera first and draw the symbols at the default size for it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo