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
A scene's `on_top` lines are drawn after every depth-tested layer, over the
model, so a concentrated load at a point inside the part can be seen from any
side (#78). `render_layers` takes a list of overlays (the setup's symbols and
the selection highlight become separate layers), and draws every layer's
labels. `Camera::length_per_pixel` is the model length a pixel spans at the
target: the scale symbols of a fixed screen size are drawn at.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo
The pick module tests rays against triangles with the watertight
ray-triangle intersection of Woop, Benthin and Wald (JCGT 2013): a ray
through an edge or vertex two triangles share hits one of them, the
nearest hit wins and ties go to the lower index, so picks are
deterministic. A Projector holds the camera's projection for
screen-space picks (Camera::to_screen and the CPU renderer use it too),
and a DepthMap of the drawn faces, rasterised by the renderer's own
triangle routine, tells which points are in front (box selection).
Display triangles now carry their element and face number (numbered as
ElementKind::faces numbers them; seen_face gives a shell's bottom side
from behind), line elements their element, and geometry surface
triangles their face tag, so a hit names what a set refers to.
DisplayMesh::pick (results probing) uses the new test.
render_layers draws a second scene over the first: its faces over the
scene faces they repeat (a small depth allowance), then its lines and
points. The viewport draws selection and hover highlights with it
without rebuilding the model's scene.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
glyphs::Glyphs picks where a model's setup symbols go (resolving its sets
once, thinning them on a grid, capping each definition and sampling large
ones with a note) and draws them into a Scene at the nodes' current
positions: cones for constrained translations (and rotations where nodes
rotate), arrows for forces, double-headed arrows for moments, arrows normal
to pressure faces, one arrow for gravity and body forces, a curved arrow for
centrifugal loads, crosses with names for reference points, lines for
couplings, hatched squares for rigid walls. Colours come from the caller by
role, muted over results.
Scene gains labels, drawn by the CPU rasterizer with a small bitmap font of
its own.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
* render: display data from the FE model, orbit camera and CPU rasterizer
modelcraft-render (L1, no GPU): DisplayMesh (the unshared faces of solid
elements, shells, element edges, line elements, nodes), the orbit camera
and a CPU rasterizer with PNG output for headless snapshots, adapted from
SolidCraft's render crate. Workspace: egui/eframe/egui-wgpu 0.36 and
SolidCraft's patched egui-wgpu from the pinned rev.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
* engine: sample model script (a hex8 block and a tet4 cube)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
* Desktop app: egui/wgpu viewport, model tree, commands, status bar, control channel
modelcraft-ui-egui (L5): ModelApp over the engine Session; GPU viewport
(lit faces, element edges, nodes) with a CPU fallback; orbit/pan/zoom,
standard views and fit; model tree; commands panel generated from the
registry with a JSON parameter form; status bar; control request
handling (engine.*, ui.*, ui.screenshot, ui.render). apps/modelcraft:
eframe window, --sample, --control PORT loopback JSON-lines server.
Adapted from SolidCraft's ui-egui and app.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
* THIRD-PARTY-LICENSES: the desktop app's dependencies
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
* docs: control protocol, desktop app in architecture, roadmap and attribution
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
* render: simplify the display mesh (sorted face keys over maps, no unused fields)
Interior faces are found by sorting fixed-size face keys instead of a BTreeMap of Vecs, edges
are deduplicated by sort, and each element's corners are looked up once. Drops the unused
`element` fields on DisplayTri/DisplayLine, the unused Mat4::IDENTITY and corner_count, and
hoists the line colour out of the raster loop.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
* viewport: split GPU geometry into batches within the buffer limit; refuse oversized CPU renders
A mesh with a few million boundary triangles made one vertex buffer larger than the device's
max_buffer_size (256 MiB under the limits eframe requests), and wgpu's default error handler
panicked. Geometry is now uploaded in batches of whole primitives, each at most 128 MiB and the
device limit, and all are drawn. A device error handler logs errors and shows them in the status
bar instead of panicking.
The CPU renderer refuses sizes over 8192 per side or 16 MP, and scenes over 20 million
primitives, with an error, and allocates its buffers fallibly. ui.render reports a size out of
range instead of clamping it; the CPU viewport fits a large window into the limit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
---------
Co-authored-by: jyviko <2501648+jyviko@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
