A drawing opened with a twisted view made a TOP-face click keep the
twist, so north ended up at the bottom. Add Camera::snap_to_face, which
snaps to a canonical orientation — north (UCS +Y) up for top/bottom,
world (UCS +Z) up for the side elevations — ignoring the current
up-sense. Face clicks use it; edges/corners still preserve their up so
they spin smoothly around the clicked feature.
The Home button routes through the same path, giving a reliable reset
for a twisted view.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Build the ViewCube out into a full navigation widget:
- Compass ring painted in the cube's ground plane (z = base) so it
reads as a ground compass and foreshortens with the view.
- N/E/S/W cardinals painted flat onto the ring band; clicking one snaps
to that side elevation. Added S/W glyphs to the bitmap atlas.
- Home button (top-down view), roll arrows (90° roll about the view
axis), and four nudge triangles (90° tip/spin) as SVG iced controls
laid out around the cube. New home.svg.
- WCS / named-UCS selector under the cube, switching the active UCS.
The cube hit area now shares one stack with the control buttons, so a
click on a button is caught by the button while a click on the cube
falls through. Face clicks snap to the highlighted region rather than a
cursor position the viewport's move handler can overwrite.
Camera gains home_view / roll_by / nudge_90; floating viewports drive
the same ops through mutate_active_viewport_camera, which re-encodes the
result to the stored view direction + twist.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The whole pipeline is relative-to-eye now, so the f32/f64 split is
vestigial. Merge eye_f64 into eye() returning DVec3; direction-only
callers take .as_vec3().
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The GPU draws exclusively via the rotation-only `view_rot` + eye double-
single; the full view-projection survived only to project AABBs in the
CPU frustum-cull / scissor / LOD passes. Migrate those to the same
relative-to-eye math (project `point - eye` through `view_rot`) — pixel-
equivalent but precise at UTM scale — then drop the dead uniform:
- pipeline cull/scissor/LOD helpers take (view_rot, eye) instead of the
full view_proj; render.rs reconstructs eye from the uniform's
eye_high/eye_low and passes the cropped view_rot.
- Remove the `view_proj` field from the shared Uniforms struct and all six
shader structs that only declared it for layout (none read it), and
delete Camera::view_proj(). The struct shrinks by one mat4 on both
sides, keeping the Rust / WGSL layouts in lock-step.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- Object-snap-tracking points now project through the relative-to-eye path
(view_proj_rte + eye) instead of the full view-projection, so they stay
precise at UTM-scale coordinates — the last consumer of the legacy full
view_proj outside the CPU frustum-cull / scissor path.
- Rename Camera::project_f64 → project and unproject_on_plane_f64 →
unproject_on_plane: the f32 twins are gone, so the disambiguating suffix
is vestigial. eye_f64 keeps its name — the f32 eye() still builds the
view matrices.
- Remove stale #[allow(dead_code)] from eye_f64 / project / unproject_on_plane
(all live now).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Checkpoint on the way to unified in-viewport editing.
- Drop the _f64 transition suffixes: pick_on_plane / pick_on_target_plane /
paper_to_model are single f64 functions (wrappers removed).
- Paper-space hit-test/snap projects viewport content with points_low, and
projects its aabb / key_vertices / snap_pts into paper coords so click
picking and snap candidates land on the visible sheet geometry.
- camera_for_viewport + paper_to_model + EnterViewport agree on an absolute
drawing-centre view (normalize_active_viewport_view) so UTM viewports
render instead of aiming at the origin.
- model_to_paper inverse; dynamic-input anchors map model→paper before the
paper camera projects them, so the guide no longer tessellates a 512 MB
buffer (clicking the first in-viewport LINE point) — crash fixed.
Known-incomplete (next: unify on the model-space path via one coordinate
adapter): in-viewport snaps stale after pan/zoom (paper_projected_cache not
keyed on the viewport view), grips don't show, command preview misplaced.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Zooming in close made the drawing vanish. The orthographic near/far were
near = distance*0.001, far = distance*1000, which parks the target plane at
ndc-z ~= 0.001 — flush against the near plane. The shared draw-order depth
bias shifts clip-z by up to DRAW_ORDER_BIAS (0.001), so a front-biased
entity landed exactly at z = 0 and dropped out as soon as f32 rounding (which
worsens at high zoom) tipped it past the plane.
ortho_depth_range() now returns a symmetric near/far (distance ± r) that
centres the target plane at ndc-z ~= 0.5, giving the bias half the depth
buffer of headroom on each side. Perspective is unchanged. Applied to both
view_proj and view_proj_rte.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Route the remaining absolute-coordinate CPU projection through the
relative-to-eye path so it no longer multiplies by a view_proj matrix
carrying a ~1e7 translation (which cancels catastrophically in f32 after
world_offset removal):
- camera pick_on_plane / pick_on_target_plane delegate to
unproject_on_plane_f64 (rotation-only inverse + f64 eye)
- snapper (world_to_screen), hit_test (click_hit / mesh / hatch), the
scene mesh/solid hit methods, grid + UCS axes, and polar_constrain_near
all take view_rot + eye and project relative-to-eye
- compute_grid_step measures the per-unit scale via the rotation-only
matrix (no eye term needed)
view_proj remains only for conservative CPU frustum-cull / scissor and the
screen-space viewcube / UCS-icon directions. NOTE: SnapResult.world and
the command-point chain are still Vec3 (f32) — a ~0.5 m quantization at
extreme UTM zoom remains; the command layer goes f64 next.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Add camera-relative-f64 world↔screen on Camera (project_f64,
unproject_on_plane_f64): the point is made eye-relative in f64 before the
rotation-only projection, so CPU picking / overlay stay exact at large
absolute coordinates — the CPU twin of the GPU's relative-to-eye path.
Additive and inert for now; the upcoming phases route overlay, pick/snap
and coordinate readout through these so world_offset can be dropped.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
zoom_about_point picked the world point under the cursor twice via
view_proj.inverse() (the full f32 matrix) and shifted target by their
difference. At UTM coordinates that inverse carries ~0.5 m of f32 error
that didn't cancel between the two picks, so target drifted every zoom
step and the whole scene jumped as a block.
Compute the pivot as the cursor's offset *relative to target* in the
camera frame (small numbers, rotated to world) instead — it never touches
the large absolute target, so the before/after difference is exact and
the scene stays put while zooming.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
No GPU pipeline reads camera_pos any more — lighting and all transforms
moved to the relative-to-eye path (view_rot + eye_high/eye_low). Remove
the field from the shared Uniforms and every shader struct, plus the now
unused Camera::position_vec4. view_proj stays: the CPU frustum-cull /
scissor / LOD passes still project offset-relative AABBs with it (it is
no longer part of any GPU draw).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Append a rotation-only view-projection plus the eye split into high/low
f32 (double-single) to the shared Uniforms buffer, and the matching
Camera helpers (view_proj_rte, eye_high_low). Fields are added at the end
so existing field offsets — and every shader still reading only the
legacy view_proj — are unaffected. No shader consumes them yet; the wire
pipeline migrates first in the next step.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Foundation for relative-to-eye rendering: the pivot the camera orbits
must stay precise at large offset-relative coordinates so the derived eye
(which the RTE path subtracts per vertex) is exact. `Camera::target` is
now DVec3 and `eye_f64()` exposes the full-precision eye; `view_proj`
still casts to f32 at the matrix, so behaviour is unchanged for now.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Clicking a ViewCube face rotated the gaze into the UCS frame but derived
the up vector from world X/Y/Z, so the snapped view landed world-aligned
(most visibly Top, where the UCS shares world Z and only the in-plane
roll differs). snap_to_direction now takes the UCS basis and picks its up
from the UCS axes, so a face snap lands square to the user's coordinate
system. Identity UCS reproduces the world-aligned snap.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Model-space tiled VPORTs and paper-space floating VIEWPORTs each carried
their own copy of the saved-view→camera math, so a fix to one drifted
from the other (the recurring grid/twist regressions). Route both, plus
the View-table and sheet-viewport paths, through one decoder and fix the
bugs that the duplication hid.
Decoder unification:
- New camera_from_view(direction, target, center, height, twist,
world_offset): the single saved-view→Camera decoder. camera_from_vport
(tiled), camera_for_viewport (floating, + auto-fit), and the View-entry
/ sheet-viewport apply paths all delegate to it. Tiled vs floating now
differ only in field source and the floating auto-fit fallback.
Twist round-trips on layout switch and file save:
- camera_from_view applies roll = -twist; the write path was dropping it,
so model→paper→model (and reload) reset the view to raw orientation.
- New Camera::roll() recovers the camera roll; sync_camera_to_document,
write_camera_view_entry, and vport_from_camera now store -roll as the
view twist on the *Active VPort, the OpenCADStudio_Camera_Model View
entry, the per-tile VPorts, and the paper sheet viewport.
Rotation-aware frustum cull:
- New view_cull_aabb(): the entity-cull rectangle is built from the
camera's right/up basis (so a twisted/rotated view's rotated rectangle
is enclosed) instead of world X/Y axes; returns None for tilted views
to disable the flat-XY cull rather than wrongly hide geometry. Applied
to the model-tile and paper-viewport cull sites.
Paper viewport scale:
- The floating-viewport auto-fit overlap test summed view_target +
view_center raw; under a twist view_center is a DCS offset, so the sum
landed far from the real WCS centre and wrongly tripped the auto-fit,
rendering content at the wrong zoom. It now tests the decoded
(twist-folded, wire-space) target. The CPU projection path derives its
scale from that same camera, locking hit-test/snap to the GPU render.
Grid enumeration:
- ViewportInstance gains grid_on; the two grid-view collectors collapse
into one grid_views() derived from the same active_viewports() list the
renderer uses, so the grid overlay can no longer drift from the views
on screen.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Move the 30 flat modules under src/scene/ into six folders by role:
convert (entity→geometry), text (fonts/shaping), model (render models),
pick (hit-test/selection/grips/xclip), view (camera/transform/render),
cache (block + property caches). pipeline/ is unchanged.
Full path migration — all `scene::X` references become
`scene::<group>::X`, no compatibility re-exports. render.rs items that
were `pub(super)` (parent was scene) become `pub(in crate::scene)` to
keep their original scene-wide visibility.
No behavior change; build and tests are green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
