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use super::*;
/// The calm base color of an unselected construction datum/plane (a soft blue).
const DATUM_PLANE_COLOR: &str = "#6b8fd0";
/// The selection accent for a selected datum/plane (matches `faceSelectedColor`).
const DATUM_PLANE_SELECTED_COLOR: &str = "#ffc400";
/// The HOVER accent for a datum/plane under the pointer (matches the faces'
/// default `hoverColor`) — distinct from the selection accent, so a plane reads
/// hovered-vs-selected exactly like a face does.
const DATUM_PLANE_HOVERED_COLOR: &str = "#fbff00";
impl EngineState {
/// Map every feature id at the CURRENT rollback (`0..=rollback`) to its TYPE
/// token — the lookup that classifies a frame name's producing feature so only
/// DATUM (`"D"`) / PLANE (`"P"`) frames display as datum planes (a SKETCH `"S"`
/// frame renders as curves, not a datum).
fn feature_type_map(&self) -> HashMap<String, String> {
let rollback = self.history.rollback();
let mut map = HashMap::new();
for index in 0..=rollback {
if let (Some(id), Some(ty)) =
(self.history.feature_id(index), self.history.feature_type(index))
{
map.insert(id, ty);
}
}
map
}
/// Classify a plane-frame NAME against the feature type map: strip a trailing
/// DATUM sub-plane suffix (`:XY`/`:XZ`/`:YZ`) to the producing feature id, look
/// up its type, and keep only `"D"`/`"P"` producers. Returns `(producing
/// feature id, feature type)` for a datum/plane frame, else `None` (a SKETCH
/// `"S"` frame, or a feature past the rollback / not in the history).
fn datum_feature_of(
name: &str,
type_map: &HashMap<String, String>,
) -> Option<(String, String)> {
let base = [":XY", ":XZ", ":YZ"]
.iter()
.find_map(|suffix| name.strip_suffix(suffix))
.unwrap_or(name);
let ty = type_map.get(base)?;
if ty == "D" || ty == "P" {
Some((base.to_string(), ty.clone()))
} else {
None
}
}
/// The construction datum/plane frame NAMES the last run resolved, filtered to
/// the D/P producing features at the current rollback, in run order. Every
/// DATUM contributes three (`{id}:XY|XZ|YZ`), every PLANE one (`{id}`); a
/// SKETCH's own plane frame is excluded (it renders as curves).
fn construction_datum_names(&self) -> Vec<String> {
let type_map = self.feature_type_map();
self.construction_frames
.iter()
.filter(|(name, _)| Self::datum_feature_of(name, &type_map).is_some())
.map(|(name, _)| name.clone())
.collect()
}
/// The producing `(feature id, feature type)` of a datum/plane frame NAME, but
/// ONLY when the name is an actually-resolved D/P frame at the current rollback
/// — the provenance the Properties Info tab reports for a selected datum.
pub fn datum_feature_for_name(&self, name: &str) -> Option<(String, String)> {
if !self.construction_frames.iter().any(|(n, _)| n == name) {
return None;
}
Self::datum_feature_of(name, &self.feature_type_map())
}
/// (Re)build the persistent construction datum/plane overlays. Feeds every D/P
/// frame the last run resolved (minus [`hidden_datums`]) to the datum-plane
/// widget channel as a screen-constant NAMED plane in the calm datum color — or
/// the selection accent when it is in `emphasis.selected_datums` / hovered when
/// it is in `emphasis.hovered_datums` (hover wins, the `EmphasisState` order).
/// The feed
/// REPLACES the widget's datum set wholesale, so a departed/hidden/rolled-back
/// plane is auto-dropped; `shown_datum_names` mirrors what was fed. Marks dirty.
///
/// The fed set is also exactly what is PICKABLE: `plane_candidates_at` hit-tests
/// these cards, so a hidden or rolled-back plane can no more be picked than it
/// can be seen.
pub fn refresh_construction_datums(&mut self) {
let type_map = self.feature_type_map();
let mut planes: Vec<serde_json::Value> = Vec::new();
let mut fed: Vec<String> = Vec::new();
for (name, frame) in &self.construction_frames {
if Self::datum_feature_of(name, &type_map).is_none() {
continue;
}
if self.hidden_datums.contains(name) {
continue;
}
let selected = self.emphasis.selected_datums.contains(name);
let hovered = self.emphasis.hovered_datums.contains(name);
// Hover WINS over selected — the `EmphasisState` order faces follow.
let color = if hovered {
DATUM_PLANE_HOVERED_COLOR
} else if selected {
DATUM_PLANE_SELECTED_COLOR
} else {
DATUM_PLANE_COLOR
};
planes.push(serde_json::json!({
"name": name,
"origin": [frame.origin.x, frame.origin.y, frame.origin.z],
"x": [frame.x_axis.x, frame.x_axis.y, frame.x_axis.z],
"y": [frame.y_axis.x, frame.y_axis.y, frame.y_axis.z],
"color": color,
"selected": selected,
"hovered": hovered,
}));
fed.push(name.clone());
}
// `set_datums` replaces its whole datum set, so a full re-feed each call
// drops any plane no longer present (rolled back / deleted / hidden).
let payload = serde_json::json!({ "planes": planes }).to_string();
let _ = self.set_datums_json(&payload);
self.shown_datum_names = fed;
self.dirty = true;
}
/// Whether the construction datum/plane `name`'s plane is shown (absent from
/// [`hidden_datums`] = visible).
pub fn datum_visible(&self, name: &str) -> bool {
!self.hidden_datums.contains(name)
}
/// Show/hide the construction datum/plane `name`'s plane (the Scene-tree
/// checkbox). Toggles [`hidden_datums`] and re-feeds the datum planes so the
/// plane appears/disappears immediately.
pub fn set_datum_visible(&mut self, name: &str, visible: bool) {
if visible {
self.hidden_datums.remove(name);
} else {
self.hidden_datums.insert(name.to_string());
}
self.refresh_construction_datums();
}
/// The construction datums/planes to list in the Scene tree: every D/P frame at
/// the current rollback, each with its live visibility (hidden ones included,
/// like [`committed_sketches`](Self::committed_sketches)).
pub fn construction_datums(&self) -> Vec<(String, bool)> {
crate::visibility::named_visibility(self.construction_datum_names(), &self.hidden_datums)
}
/// The construction datums/planes as JSON (`[{"name","visible"}]`) — the datum
/// sibling of [`sketch_entities_json`](Self::sketch_entities_json) the Scene
/// panel publishes (`__brepDatums`) for the headed verifier.
pub fn datum_entities_json(&self) -> String {
crate::visibility::named_visibility_json(self.construction_datums())
}
/// Select a construction datum/plane by frame NAME (replacing the whole
/// selection): a Scene-tree row click or a viewport datum pick. Only a name
/// that is an actually-resolved D/P frame at the current rollback selects;
/// others return false without changing the selection. Re-feeds the datum
/// planes so the selected one shows the accent, and bumps the generation.
pub fn select_datum(&mut self, name: &str) -> bool {
if name.is_empty() || !self.construction_frames.iter().any(|(n, _)| n == name) {
return false;
}
if Self::datum_feature_of(name, &self.feature_type_map()).is_none() {
return false;
}
self.emphasis.selected_solids.clear();
self.emphasis.selected_faces.clear();
self.emphasis.selected_edges.clear();
self.emphasis.selected_vertices.clear();
self.emphasis.selected_datums.clear();
self.emphasis.selected_datums.insert(name.to_string());
self.emphasis.generation = self.emphasis.generation.wrapping_add(1);
self.refresh_construction_datums();
self.dirty = true;
true
}
}
// BREP private tests: 28fa92dc5a877890