Struct RenderSettings 

pub struct RenderSettings {

    pub theme: ThemeMode,
    pub ui_scale: f32,
    pub label_scale: f32,
    pub debug_grab_handles: bool,
    pub background: [f32; 3],
    pub face_color_mode: FaceColorMode,
    pub face_color: Rgba,
    pub face_selected_color: Rgba,
    pub hover_color: Rgba,
    pub edge_color: Rgba,
    pub edge_selected_color: Rgba,
    pub edge_width_px: f32,
    pub hidden_edge_alpha: f32,
    pub vertex_color: Rgba,
    pub vertex_selected_color: Rgba,
    pub vertex_size_px: f32,
    pub flat_shading: bool,
    pub wireframe: bool,
    pub axis_length_px: f32,
    pub viewcube_size_px: f32,
    pub pick_double_sided: bool,
    pub multi_select: MultiSelectMode,
    pub lod_factor: f64,
    pub sketch_movable_color: Rgba,
    pub sketch_locked_color: Rgba,
    pub sketch_geometry_color: Rgba,
    pub sketch_point_color: Rgba,
    pub sketch_construction_point_color: Rgba,
    pub sketch_under_constrained_point_color: Rgba,
    pub sketch_selected_color: Rgba,
    pub sketch_hovered_color: Rgba,
    pub sketch_preview_color: Rgba,
    pub sketch_constraint_color: Rgba,
    pub workbench: String,
    pub assembly_auto_solve: bool,
    pub show_constraint_graphics: bool,
    pub bom_columns: String,
}

The viewer’s material palette + display toggles. Defaults are the CADmaterials values.

Fields

theme: ThemeMode

GUI chrome theme (egui panels/windows/toolbar/text). Defaults to Auto, following the OS light/dark preference.

ui_scale: f32

Global UI size scale applied to the whole egui chrome via [egui::Context::set_zoom_factor]. 1.0 = native size; composes with the device pixel ratio. Clamped to [0.5, 3.0].

label_scale: f32

Size multiplier for the floating TEXT LABELS the app overlays on the 3D model — the dimension-gizmo value chips (sketch + feature dimensions), the assembly-constraint chips, and the transform gizmo’s axis letters. 1.0 = the base monospace size; the label’s glyphs, its measured edit-box width, and its chip padding all scale together (see brep-app’s viewport::labels). A MULTIPLIER, not a point size, so labels stay consistent with each other and the setting survives a restyle. Clamped to [0.25, 3.0]: 0.25 is the smallest label that is still a LABEL rather than a smudge — a quarter of the 12pt base monospace is a ~3.8pt glyph row inside a ~4.5pt-tall chip, which is the point at which the double-click/drag target stops being something a pointer can reliably land on (and it composes with uiScale + the device pixel ratio, so it is not an absolute 3pt on screen). The 3.0 ceiling keeps a user from filling the viewport with one label. Independent of RenderSettings::ui_scale, which sizes the egui CHROME (panels/toolbar) and not the model overlay.

debug_grab_handles: bool

Debug overlay: draw the 1px red outline of each gizmo grab handle’s hit region (arrows/leaders as capsules, balls as circles). Off by default; toggled from Settings to inspect exactly where a drag will grab.

background: [f32; 3]

face_color_mode: FaceColorMode

face_color: Rgba

face_selected_color: Rgba

hover_color: Rgba

edge_color: Rgba

edge_selected_color: Rgba

edge_width_px: f32

hidden_edge_alpha: f32

Occluded edges render dimmed, not dropped (R17): alpha of the depth-failing edge pass. 0 disables the pass.

vertex_color: Rgba

vertex_selected_color: Rgba

vertex_size_px: f32

flat_shading: bool

wireframe: bool

Wireframe display (R14): when true the shaded face-fill pass is skipped so only edges draw (the CAD wireframe look; back edges show through). Does NOT affect picking (CPU ray-based) or the overlay pass.

axis_length_px: f32

World-axis helper (R20): screen length in CSS px; 0 disables.

viewcube_size_px: f32

On-screen edge length of the always-on corner ViewCube, in CSS px. Drives BOTH the rendered mini-camera viewport AND the hit-test corner rect (they read the same value), so the cube and its clickable region scale together. Defaults to [ViewCube::DEFAULT_SIZE_PX], so the cube is unchanged until edited.

pick_double_sided: bool

multi_select: MultiSelectMode

How a plain viewport click builds a multi-selection (see MultiSelectMode).

lod_factor: f64

Tessellation LOD factor (1.0 = the app’s “Normal” preset).

sketch_movable_color: Rgba

sketch_locked_color: Rgba

sketch_geometry_color: Rgba

sketch_point_color: Rgba

sketch_construction_point_color: Rgba

sketch_under_constrained_point_color: Rgba

sketch_selected_color: Rgba

sketch_hovered_color: Rgba

sketch_preview_color: Rgba

sketch_constraint_color: Rgba

workbench: String

The active UI WORKBENCH id ("all" / "modeling" / "sheetMetal"), a plain string (NOT an enum) so the app-side per-file workbench registry stays the sole owner of the valid-id set — adding a workbench never touches this crate. This is purely a UI FILTER over feature-CREATION: it does not affect what the history executes or renders. Default "modeling". An unknown stored id is tolerated here and validated app-side (the registry’s resolver falls back to the default).

assembly_auto_solve: bool

Assembly AUTO-SOLVE (build-spec §6 scheduling): when true (the default) every constraint mutation re-solves + re-runs immediately; when false the mutation paths only update state and the user drives the manual Solve button. Consulted by the app’s constraint-mutation path.

show_constraint_graphics: bool

Show Constraint Graphics (build-spec §8.3/§8.4): the render toggle the viewport overlay lane consumes — per-constraint leader/label graphics draw only while this is on. Owned here so the panel toggle, persistence, and the overlay renderer all read ONE flag.

bom_columns: String

The BOM’s COLUMN CONFIGURATION — the raw text of the Settings panel’s Assemblies textarea (one [*]prefix.Field per line). Stored VERBATIM, exactly as the user typed it: parsing, the known-field catalogue and the part. / occurrence. vocabulary all live app-side (panels::bom_columns), so adding a BOM field never touches this crate — the same division of labour that keeps workbench a plain string here.

Default EMPTY, which means “the app’s shipped default configuration”. A document that was never configured therefore persists byte-for-byte as before, and a later change to the shipped default still reaches every user who never overrode it.

Implementations

impl RenderSettings

pub fn artifact() -> Self

The artifact-corpus preset: byte-faithful to the slice-1 artifact look (per-solid hashed colors, 0x101418 background, 1.6px edges in 0x0d1030, no hidden-edge pass, no vertices, no axes).

pub fn apply_json(&mut self, json: &str) -> Result<(), String>

Apply a partial JSON override (R3 settings entrypoint). Unknown keys are ignored; colors are CSS hex strings.

pub fn to_json(&self) -> String

Serialize EVERY setting to the SAME camelCase / CSS-hex shape [apply_json] reads, so s.apply_json(&s.to_json()) is the identity. This is the counterpart the settings schema serializes/persists through (there was previously no serializer, only the partial-override reader).

pub fn sketch_colors(&self) -> SketchColors

The live SketchColors view of the sketcher palette — the tessellation / overlay builders read their colors from THIS (via crate::sketch::SketchSession::colors) so the display settings are the one source of truth. Each Rgba is quantized back to 0xRRGGBB the SAME way [rgb_to_css_hex] serializes it, so a default settings value round-trips to the default SketchColors byte-exact.

pub fn settings_schema_json(&self) -> String

The settings schema WITH the current value baked into each field, as JSON — mirrors the kernel’s feature_schemas_json export so a UI shell (egui here, a later brep-ui crate) can generate the whole form from data. The value of each field is pulled live from [to_json], so the export always reflects the current settings.

Trait Implementations

impl Clone for RenderSettings

fn clone(&self) -> RenderSettings

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RenderSettings

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RenderSettings

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for RenderSettings

fn eq(&self, other: &RenderSettings) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for RenderSettings