Model space appearance now follows the active UI theme instead of a
hardcoded dark background. Canvas mode is user-selectable (Match Theme /
Classic CAD Dark / Custom RGB), with matching controls for the paper
sheet and desk surround backgrounds and grid opacity.
Implements industry-standard CAD system variables, all settable via
command name, SETVAR, and the Options dialog:
- COLORTHEME (0/1 dark/light UI scheme, preserves custom palettes)
- COLORSCHEME (interactive named-theme selection)
- BACKGROUND (THEME/CLASSIC/DEFAULT/DESK presets, RGB triplets)
- SELECTIONAREA, SELECTIONAREAOPACITY (translucent marquee fill)
- WINDOWSAREACOLOR/WINDOWAREACOLOR, CROSSINGAREACOLOR (ACI or theme)
- SELECTIONEFFECT, SELECTIONEFFECTCOLOR (GPU highlight pass, driven by
selection_generation invalidation — no retessellation)
- SELECTIONPREVIEW (bit 0 = idle rollover, bit 1 = in-command hover)
- GRIPSIZE, GRIPCOLOR, GRIPHOT, GRIPHOVER (grip overlay styling)
Resolve ByBlock alpha independently from color and keep explicit opaque values from falling back to layer transparency.
Pin the matching cadcodec API across desktop, plugin, and web targets.
Refs HakanSeven12/cadcodec#2
Keep hidden pre-drag geometry out of snap candidates and avoid empty
scene invalidations. Require stable OTRACK dwell observations and cache
planar-solid visibility during live previews.
Refs #930
Improve the selection-cycling list box so overlapping objects can be
identified at a glance:
- Add a color swatch per row showing the object's effective drawn color
- Show the layer name right-aligned next to the element type
- Size the popup to fit its content with consistent padding
Widen render_style_for_viewport visibility from scene-internal to
crate-wide so the view layer resolves the same color the renderer uses.
Persist camera, render state, and solid fallback geometry across saves. Generate previews from a clean live viewport and refresh recent-file thumbnails immediately.
Keep all solid geometry GPU-resident during navigation. Use vertex-rate instancing, compact untextured vertices, vertex-cache ordering, and cached silhouette sources without culling geometry.
Reuse full VPort records during camera and tile synchronization so
navigation cannot replace file-defined display state with defaults.
Honor image, ground, IBL, and sun-backed sky parameters in
background rendering.
Share source buffers across block placements and render nested content with GPU instance transforms.\n\nChunk silhouettes and compact mesh material data so large drawings stay under device buffer limits and remain responsive.
A paper layout painted its whole canvas in the page colour, so the sheet
had no visible edge — zooming out never reached one, because the surround
was the same colour as the page. Floating viewports then painted
themselves black over it.
Both come from the same idea, that a viewport's canvas is a colour it can
be handed. What lies behind a viewport depends on what the viewport is:
- The full-canvas sheet shows the desk. `paper_bg_color` is the page, and
the page is a bounded rectangle `paper_sheet_fill` already draws; using
it for the canvas too erased the boundary between them. The desk is now
its own colour, defined once in the scene and read by both the widget
and the renderer, so the two cannot drift apart.
- A floating viewport sits on that sheet and must paint no canvas at all.
Handing it a transparent one does not work: the background shader
returns an opaque colour whatever alpha it is given, so alpha zero came
out black. Skipping the pass is the only way to ask for see-through, so
`skip_background` now suppresses both the clear and the pass. It is part
of the frame signature too — without that, a cached frame would keep
showing the canvas the flag was just turned off for.
Shading and fog still blend toward what is behind a floating viewport,
which is the page, so the uniform keeps that colour even though nothing
paints it.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Preload one language-aware font resource across the interface, drawing text, and navigation labels.\n\nRender the navigation cube, ring, outlines, and labels through a 4x MSAA target.
Keep storage fast paths on capable adapters and use packed or texture fallbacks only when device limits require them.\n\nCompact mesh-edge varyings to avoid WebGL shader rejection.
Cancel stale interaction state across space changes and keep live previews and zoom extents in their active paper/model context.\n\nRefs #539\nRefs #540\nRefs #541
Avoid full document, cache, and GPU rebuilds for entity deltas so add, delete, history, selection, and live polyline edits stay responsive on large drawings.
Karim Jerbi