forked from 1b-agent/opencadstudio-upstream
1008 lines
43 KiB
Rust
1008 lines
43 KiB
Rust
// Camera / view operations on `Scene`: zoom, fit-all, named-view restore,
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// camera<->document sync, and per-tile grid/snap. (The actual screen-space
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// hit-testing lives in `scene::pick::hit_test`.)
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use super::*;
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/// The model-space active viewport is reserved as `*Active`, but that name is
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/// case-insensitive in DXF/DWG — a file may store it as `*ACTIVE`. Match it
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/// accordingly, otherwise an uppercased record reads as a *distinct* viewport:
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/// on save it survives the "drop the old *Active" filter and sits next to the
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/// fresh entry we add, so the file gets two overlapping full-window viewports
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/// that render "one on top of the other". (#319)
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fn is_active_vport_name(name: &str) -> bool {
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name.eq_ignore_ascii_case("*Active")
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}
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impl Scene {
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// ── Hit-test convenience: wire name → Handle ──────────────────────────
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pub fn handle_from_wire_name(name: &str) -> Option<Handle> {
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name.parse::<u64>().ok().map(Handle::new)
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}
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/// Restore camera to a named view from the document view table.
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pub fn restore_named_view(&mut self, view: &acadrust::tables::View) {
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use glam::Vec3;
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let cam = &mut *self.camera.borrow_mut();
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// view.target is the look-at point; view.direction is eye→target direction.
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cam.target = glam::DVec3::new(view.target.x, view.target.y, view.target.z);
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// direction in acadrust = from-target-to-eye (same as AutoCAD convention).
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let eye_dir = Vec3::new(
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view.direction.x as f32,
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view.direction.y as f32,
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view.direction.z as f32,
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);
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let eye_dir = if eye_dir.length_squared() > 1e-10 {
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eye_dir.normalize()
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} else {
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Vec3::Z
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};
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// Build rotation: canonical eye is +Z, rotate to eye_dir.
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cam.rotation = glam::Quat::from_rotation_arc(Vec3::Z, eye_dir);
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// Sync yaw/pitch from new rotation (for ViewCube).
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let pitch = eye_dir.z.clamp(-1.0, 1.0).asin();
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let yaw = eye_dir.x.atan2(eye_dir.y);
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cam.yaw = yaw;
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cam.pitch = pitch;
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// Derive distance from view height and fov.
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let h = view.height as f32;
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cam.distance = if h > 0.0 {
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h / (2.0 * (cam.fov_y * 0.5).tan())
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} else {
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cam.distance
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};
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self.camera_generation += 1;
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}
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/// Save the current camera state into a new named view entry.
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/// Returns the view; caller must push it into document.views.
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pub fn current_as_named_view(&self, name: &str) -> acadrust::tables::View {
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use acadrust::types::Vector3;
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let cam = self.camera.borrow();
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let eye_dir = cam.rotation * glam::Vec3::Z;
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let height = cam.ortho_size() * 2.0;
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let width = height; // caller can adjust; rough square
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let mut view = acadrust::tables::View::new(name);
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view.center = Vector3 {
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x: cam.target.x as f64,
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y: cam.target.y as f64,
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z: 0.0,
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};
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view.target = Vector3 {
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x: cam.target.x as f64,
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y: cam.target.y as f64,
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z: cam.target.z as f64,
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};
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view.direction = Vector3 {
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x: eye_dir.x as f64,
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y: eye_dir.y as f64,
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z: eye_dir.z as f64,
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};
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view.height = height as f64;
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view.width = width as f64;
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view.lens_length = 50.0;
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view.front_clip = 0.0;
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view.back_clip = 0.0;
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view.twist_angle = 0.0;
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// OCS saves an orthographic model view, not a perspective camera.
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view.perspective = false;
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view
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}
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/// Zoom the model-space camera in/out by a percentage.
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/// factor > 1 = zoom out, factor < 1 = zoom in.
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pub fn zoom_camera(&mut self, factor: f32) {
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let mut cam = self.camera.borrow_mut();
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cam.distance = (cam.distance * factor).max(0.001);
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drop(cam);
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self.camera_generation += 1;
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}
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/// Aspect ratio of the active camera's actual render rectangle. Model
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/// panes are separate shader widgets, so the full-canvas render aspect is
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/// wrong whenever a tiled viewport is active.
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pub(super) fn active_camera_aspect(&self) -> f32 {
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if self.current_layout == "Model" {
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let (canvas_w, canvas_h) = self.selection.borrow().vp_size;
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let tiles = self.model_tiles.borrow();
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let active = self.active_model_tile.get().min(tiles.len().saturating_sub(1));
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if let Some(tile) = tiles.get(active) {
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let width = tile.rect.width * canvas_w;
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let height = tile.rect.height * canvas_h;
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if width.is_finite() && height.is_finite() && width > 0.0 && height > 0.0 {
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return width / height;
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}
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}
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}
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self.last_render_aspect.get().max(0.01)
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}
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/// Fit the camera to a world-space bounding box (corners p1, p2).
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pub fn zoom_to_window(&mut self, p1: glam::Vec3, p2: glam::Vec3) {
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let min = p1.min(p2);
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let max = p1.max(p2);
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if min == max {
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return;
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}
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let aspect = self.active_camera_aspect();
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self.camera
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.borrow_mut()
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.fit_to_bounds(min, max, aspect);
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self.camera_generation += 1;
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}
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/// Apply camera state from an acadrust View table entry, through the shared
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/// `camera_from_view` decoder so the twist round-trips like every other
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/// saved view. `model_space`: if true, subtracts world_offset from target
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/// (wire-space); paper-space entries carry no offset.
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fn apply_camera_from_view_entry(
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&mut self,
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view: &acadrust::tables::View,
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model_space: bool,
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) -> bool {
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let _ = model_space;
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let Some(cam) = self.camera_from_view(
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view.direction,
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view.target,
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acadrust::types::Vector2 {
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x: view.center.x,
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y: view.center.y,
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},
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view.height,
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view.twist_angle,
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) else {
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return false;
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};
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*self.camera.borrow_mut() = cam;
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self.camera_generation += 1;
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true
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}
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/// Set the model-space camera from the VPORT table's *Active entry.
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/// Returns true if the entry was found and the camera was set.
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fn apply_active_vport_camera(&mut self) -> bool {
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// Restore the single tile's visual style + grid/snap from the *Active
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// entry, independent of where the camera itself comes from below.
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if let Some(vp) = self.document.vports.iter().find(|v| is_active_vport_name(&v.name)) {
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let mode = vp.render_mode;
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let (grid_on, snap_on) = (vp.grid_on, vp.snap_on);
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let mut tiles = self.model_tiles.borrow_mut();
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let active = self.active_model_tile.get().min(tiles.len().saturating_sub(1));
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if let Some(t) = tiles.get_mut(active) {
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t.render_mode = mode;
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t.grid_on = grid_on;
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t.snap_on = snap_on;
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}
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}
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// Restore from the standard *Active VPORT entry. (Earlier builds also
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// wrote an app-specific "OpenCADStudio_Camera_Model" View record and
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// preferred it here — that polluted the file for other CAD programs and
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// is no longer written or read; the view round-trips fine via VPORT.)
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let vp = match self.document.vports.iter().find(|v| is_active_vport_name(&v.name)) {
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Some(v) => v.clone(),
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None => return false,
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};
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let Some(new_cam) = self.camera_from_vport(&vp) else {
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return false;
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};
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*self.camera.borrow_mut() = new_cam;
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self.camera_generation += 1;
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true
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}
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/// Decode a saved view into a `Camera`. This is the single shared decoder
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/// for both a model-space VPORT table entry (tiled) and a paper-space
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/// VIEWPORT entity (floating): tiled vs floating only changes *where* the
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/// fields come from and the floating auto-fit fallback — the projection
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/// math (view direction → yaw/pitch, twist → roll, view_center fold,
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/// view_height → distance) is identical, so it lives here once. Callers pass
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/// their already-effective `view_target` / `view_center` / `view_height`.
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///
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/// Returns `None` for a zero `view_height` (an uninitialised entry).
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pub(super) fn camera_from_view(
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&self,
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view_direction: acadrust::types::Vector3,
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view_target: acadrust::types::Vector3,
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view_center: acadrust::types::Vector2,
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view_height: f64,
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twist: f64,
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// Subtracted from `view_target` to reach wire-space. Model views pass
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// `[0.0_f64; 3]`; paper-space views (whose entities carry no
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// offset) pass `[0; 3]`.
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) -> Option<Camera> {
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if view_height.abs() < 1e-9 {
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return None;
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}
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let vd = glam::Vec3::new(
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view_direction.x as f32,
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view_direction.y as f32,
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view_direction.z as f32,
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)
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.normalize_or(glam::Vec3::Z);
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let pitch = vd.z.clamp(-1.0, 1.0).asin();
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// view_dir = (sin(yaw)*cos(pitch), -cos(yaw)*cos(pitch), sin(pitch))
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// → yaw = atan2(x, -y), but when looking straight up/down cos(pitch)≈0
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// both x and y are near zero and atan2(0, -0.0) = π due to IEEE 754.
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let yaw = if vd.x.abs() < 1e-6 && vd.y.abs() < 1e-6 {
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0.0_f32 // plan/nadir view: yaw is undefined, default to 0
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} else {
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vd.x.atan2(-vd.y)
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};
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// The saved view can carry a twist (rotation about the view axis), set
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// when the view was aligned to a rotated UCS. The twist is the angle
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// that rotates world-X onto screen-right, so the world direction that
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// ends up horizontal is its negative; feed that in as the camera roll
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// so the drawing opens square, the way it was saved, instead of in raw
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// world orientation (which looks tilted).
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let rotation = view::camera::yaw_pitch_to_quat(yaw, pitch, -twist as f32);
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let view_right = rotation * glam::Vec3::X;
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let view_up = rotation * glam::Vec3::Y;
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// view_target is WCS; wire-space subtracts world_offset. view_center is
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// a DCS (screen-plane) offset, so fold it through the view basis.
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// Keep the target in f64: casting it to f32 first quantizes the camera
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// to ~0.5 m at UTM scale, so panning/zooming inside a floating viewport
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// (which nudges view_target by sub-metre f64 steps) made the content
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// jump on the f32 grid. The axis directions stay f32 (orientation only);
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// only the position must stay precise — matching the model camera.
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let base = glam::DVec3::new(
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view_target.x,
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view_target.y,
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view_target.z,
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);
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let target = base
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+ view_right.as_dvec3() * view_center.x
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+ view_up.as_dvec3() * view_center.y;
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let fov_y = 45.0_f32.to_radians();
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let distance = ((view_height as f32 / 2.0) / (fov_y * 0.5).tan()).max(0.001);
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Some(Camera {
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target,
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rotation,
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distance,
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fov_y,
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projection: view::camera::Projection::Orthographic,
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yaw,
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pitch,
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// Sized from the saved view height (not a zoom-scaled range) so a
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// restored view keeps stable depth precision. A THIN projection —
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// e.g. a model-documentation section/side view whose cut plane sits
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// half an object-depth from the view target — has content much
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// deeper than its visible height, so the depth half-range must be a
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// generous multiple: `×4` clipped a section view's outline that was
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// ~6× the view height deep. Orthographic depth precision is linear,
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// so the wide range costs no z-fighting.
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depth_half_range: (view_height as f32 * 64.0).max(1.0),
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// A restored view has no model AABB yet; `fit_depth_to_saved_extents`
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// fills it in from $EXTMIN/$EXTMAX right after, so the near/far tracks
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// the eye direction once the view is orbited.
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model_bounds: None,
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})
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}
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/// Decode a VPort table entry (model-space tiled view) into a `Camera`.
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fn camera_from_vport(&self, vp: &acadrust::tables::VPort) -> Option<Camera> {
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self.camera_from_view(
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vp.view_direction,
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vp.view_target,
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vp.view_center,
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vp.view_height,
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vp.view_twist,
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)
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}
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/// Reverse of `camera_from_vport`: write `cam`'s view target / direction
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/// / height onto a fresh VPort entry with the given `name` and screen
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/// rectangle (0..1 normalized, DXF bottom-left origin convention).
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fn vport_from_camera(
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&self,
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name: &str,
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cam: &Camera,
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lower_left: acadrust::types::Vector2,
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upper_right: acadrust::types::Vector2,
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) -> acadrust::tables::VPort {
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let view_dir = cam.rotation * glam::Vec3::Z;
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let view_height = cam.ortho_size() * 2.0;
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let target_wcs = acadrust::types::Vector3 {
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x: (cam.target.x as f64) + [0.0_f64; 3][0],
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y: (cam.target.y as f64) + [0.0_f64; 3][1],
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z: (cam.target.z as f64) + [0.0_f64; 3][2],
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};
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let mut entry = acadrust::tables::VPort::new(name);
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entry.lower_left = lower_left;
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entry.upper_right = upper_right;
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entry.view_target = target_wcs;
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entry.view_direction = acadrust::types::Vector3 {
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x: view_dir.x as f64,
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y: view_dir.y as f64,
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z: view_dir.z as f64,
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};
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entry.view_height = view_height as f64;
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entry.view_center = acadrust::types::Vector2::ZERO;
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// Stored twist = -roll, matching the decoder (roll = -twist).
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entry.view_twist = -cam.roll() as f64;
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entry
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}
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/// Convert a `ModelTile`'s normalized iced rectangle (top-left origin) to
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/// the (lower_left, upper_right) pair the VPort table uses (bottom-left
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/// origin).
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fn tile_rect_to_vport(rect: iced::Rectangle) -> (acadrust::types::Vector2, acadrust::types::Vector2) {
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let lower_left = acadrust::types::Vector2 {
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x: rect.x as f64,
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y: (1.0 - rect.y - rect.height) as f64,
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};
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let upper_right = acadrust::types::Vector2 {
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x: (rect.x + rect.width) as f64,
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y: (1.0 - rect.y) as f64,
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};
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(lower_left, upper_right)
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}
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/// Inverse of `tile_rect_to_vport`.
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fn vport_to_tile_rect(lower_left: acadrust::types::Vector2, upper_right: acadrust::types::Vector2) -> iced::Rectangle {
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iced::Rectangle {
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x: lower_left.x as f32,
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y: (1.0 - upper_right.y) as f32,
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width: (upper_right.x - lower_left.x) as f32,
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height: (upper_right.y - lower_left.y) as f32,
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}
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}
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/// Restore `model_tiles` from VPort entries that a previous save left in
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/// the document. Native AutoCAD tiled model-space layouts are represented
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/// by duplicate `*Active` VPort entries.
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/// Returns true on success — the caller skips `apply_active_vport_camera`
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/// in that case because the active tile's camera has already been loaded
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/// into `self.camera`.
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fn restore_model_tiles_from_vports(&mut self) -> bool {
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let active_vports: Vec<acadrust::tables::VPort> = self
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.document
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.vports
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.iter()
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.filter(|v| is_active_vport_name(&v.name))
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.cloned()
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.collect();
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if active_vports.len() <= 1 {
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return false;
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}
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let tiles: Vec<ModelTile> = active_vports
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.iter()
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.filter_map(|vp| {
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self.camera_from_vport(vp).map(|cam| ModelTile {
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rect: Self::vport_to_tile_rect(vp.lower_left, vp.upper_right),
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camera: cam,
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render_mode: vp.render_mode,
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grid_on: vp.grid_on,
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snap_on: vp.snap_on,
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})
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})
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.collect();
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if tiles.len() <= 1 {
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return false;
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}
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let active_cam = tiles[0].camera.clone();
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*self.model_tiles.borrow_mut() = tiles;
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self.active_model_tile.set(0);
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*self.camera.borrow_mut() = active_cam;
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// Rebuild the pane_grid layout from the restored tile rects so the panes
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// match (the renderer / input iterate panes, not tiles).
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self.rebuild_panes_from_tiles();
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self.camera_generation += 1;
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true
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}
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/// Persist `model_tiles` to the VPort table. Native AutoCAD tiled model
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/// viewports are written as duplicate `*Active` entries.
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fn save_model_tiles_to_vports(&mut self) {
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// Stash the live camera into the active tile so the about-to-write
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// snapshot reflects the user's most recent orbit / pan / zoom.
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{
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let live_cam = self.camera.borrow().clone();
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let mut tiles = self.model_tiles.borrow_mut();
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let active = self.active_model_tile.get().min(tiles.len().saturating_sub(1));
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if let Some(t) = tiles.get_mut(active) {
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t.camera = live_cam;
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}
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}
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let table_handle = self.document.vports.handle();
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let preserved_vps: Vec<acadrust::tables::VPort> = self
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.document
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.vports
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.iter()
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.filter(|v| !is_active_vport_name(&v.name))
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.cloned()
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.collect();
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let mut new_vports = acadrust::tables::Table::with_handle(table_handle);
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for vp in preserved_vps {
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new_vports.add_or_replace(vp);
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}
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self.document.vports = new_vports;
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let tiles = self.model_tiles.borrow().clone();
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if tiles.is_empty() {
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return;
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}
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let active = self.active_model_tile.get().min(tiles.len().saturating_sub(1));
|
||
let mut ordered_tiles = Vec::with_capacity(tiles.len());
|
||
ordered_tiles.push(tiles[active].clone());
|
||
for (i, tile) in tiles.iter().enumerate() {
|
||
if i != active {
|
||
ordered_tiles.push(tile.clone());
|
||
}
|
||
}
|
||
|
||
for tile in ordered_tiles {
|
||
let (ll, ur) = Self::tile_rect_to_vport(tile.rect);
|
||
let mut entry = self.vport_from_camera("*Active", &tile.camera, ll, ur);
|
||
entry.render_mode = tile.render_mode;
|
||
// Each viewport persists its own grid display + grid-snap (#121).
|
||
entry.grid_on = tile.grid_on;
|
||
entry.snap_on = tile.snap_on;
|
||
entry.handle = self.document.allocate_handle();
|
||
self.document.vports.add_allow_duplicate(entry);
|
||
}
|
||
}
|
||
|
||
/// Mirror the live grid/snap toggles onto the active view's own store so the
|
||
/// state stays independent per viewport: a model tile in model space, the
|
||
/// layout's sheet viewport in paper space. (#121)
|
||
pub fn set_active_tile_grid_snap(&mut self, grid_on: bool, snap_on: bool) {
|
||
if self.current_layout != "Model" {
|
||
// Paper space: target the active floating viewport if the user is
|
||
// working inside one, otherwise the layout's sheet viewport. Each
|
||
// viewport keeps its own grid/snap (round-tripped via status flags).
|
||
let h = self
|
||
.active_viewport
|
||
.filter(|h| h.is_valid())
|
||
.unwrap_or_else(|| self.current_layout_sheet_viewport_handle());
|
||
if h.is_valid() {
|
||
if let Some(EntityType::Viewport(vp)) = self.document.get_entity_mut(h) {
|
||
vp.status.grid_on = grid_on;
|
||
vp.status.snap_on = snap_on;
|
||
}
|
||
}
|
||
return;
|
||
}
|
||
let mut tiles = self.model_tiles.borrow_mut();
|
||
let active = self.active_model_tile.get().min(tiles.len().saturating_sub(1));
|
||
if let Some(t) = tiles.get_mut(active) {
|
||
t.grid_on = grid_on;
|
||
t.snap_on = snap_on;
|
||
}
|
||
}
|
||
|
||
/// The active view's grid display + grid-snap, adopted into the live toggles
|
||
/// on load and whenever the active viewport / tab / layout changes. Reads the
|
||
/// model tile in model space, the sheet viewport in paper space. (#121)
|
||
pub fn active_tile_grid_snap(&self) -> Option<(bool, bool)> {
|
||
if self.current_layout != "Model" {
|
||
let h = self
|
||
.active_viewport
|
||
.filter(|h| h.is_valid())
|
||
.unwrap_or_else(|| self.current_layout_sheet_viewport_handle());
|
||
if h.is_valid() {
|
||
if let Some(EntityType::Viewport(vp)) = self.document.get_entity(h) {
|
||
return Some((vp.status.grid_on, vp.status.snap_on));
|
||
}
|
||
}
|
||
return Some((false, false));
|
||
}
|
||
let tiles = self.model_tiles.borrow();
|
||
let active = self.active_model_tile.get().min(tiles.len().saturating_sub(1));
|
||
tiles.get(active).map(|t| (t.grid_on, t.snap_on))
|
||
}
|
||
|
||
/// Set the paper-space camera from the sheet viewport's stored view.
|
||
/// Returns true if a valid sheet viewport was found and the camera was set.
|
||
///
|
||
/// The sheet viewport entity is the authoritative paper-space view (it
|
||
/// round-trips through both the DXF and DWG writers). An older
|
||
/// `OpenCADStudio_Camera_<layout>` named View is honoured only as a
|
||
/// backward-compatible fallback for files saved under the previous scheme.
|
||
fn apply_sheet_viewport_camera(&mut self) -> bool {
|
||
// The Layout object already owns the authoritative sheet-viewport
|
||
// handle. Do not scan every drawing entity on each Model↔Paper switch.
|
||
let sheet_vp = match self
|
||
.document
|
||
.get_entity(self.current_layout_sheet_viewport_handle())
|
||
{
|
||
Some(EntityType::Viewport(vp)) => Some(vp.clone()),
|
||
_ => None,
|
||
};
|
||
|
||
let vp = match sheet_vp {
|
||
Some(v) if v.view_height.abs() >= 1e-9 => v,
|
||
_ => {
|
||
// Back-compat: files OCS saved with the named-View side-channel.
|
||
let view_name = format!("OpenCADStudio_Camera_{}", self.current_layout);
|
||
let fallback =
|
||
self.document.views.iter().find(|v| v.name == view_name).cloned();
|
||
if let Some(view) = fallback {
|
||
return self.apply_camera_from_view_entry(&view, false);
|
||
}
|
||
return false;
|
||
}
|
||
};
|
||
|
||
// Paper-space entities carry no world_offset → decode with a zero
|
||
// offset, through the same shared decoder (twist included).
|
||
let Some(cam) = self.camera_from_view(
|
||
vp.view_direction,
|
||
vp.view_target,
|
||
acadrust::types::Vector2 {
|
||
x: vp.view_center.x,
|
||
y: vp.view_center.y,
|
||
},
|
||
vp.view_height,
|
||
vp.twist_angle,
|
||
) else {
|
||
return false;
|
||
};
|
||
*self.camera.borrow_mut() = cam;
|
||
self.camera_generation += 1;
|
||
true
|
||
}
|
||
|
||
/// Write the current camera back into the document (VPort or sheet viewport)
|
||
/// so it is saved with the file. Returns true if the document was modified.
|
||
pub fn sync_camera_to_document(&mut self) -> bool {
|
||
let cam = self.camera.borrow().clone();
|
||
let view_dir = cam.rotation * glam::Vec3::Z;
|
||
let view_height = cam.ortho_size() * 2.0;
|
||
// Stored twist is the negative of the camera roll (the decoder applies
|
||
// roll = -twist), so the saved view round-trips square.
|
||
let twist = -cam.roll() as f64;
|
||
let vd3 = acadrust::types::Vector3 {
|
||
x: view_dir.x as f64,
|
||
y: view_dir.y as f64,
|
||
z: view_dir.z as f64,
|
||
};
|
||
|
||
if self.current_layout == "Model" {
|
||
let target_wcs = acadrust::types::Vector3 {
|
||
x: (cam.target.x as f64) + [0.0_f64; 3][0],
|
||
y: (cam.target.y as f64) + [0.0_f64; 3][1],
|
||
z: (cam.target.z as f64) + [0.0_f64; 3][2],
|
||
};
|
||
|
||
// Write back to the *Active VPort entry (may be overridden by DWG writer).
|
||
if let Some(vp) = self
|
||
.document
|
||
.vports
|
||
.iter_mut()
|
||
.find(|v| is_active_vport_name(&v.name))
|
||
{
|
||
vp.view_target = target_wcs;
|
||
vp.view_center = acadrust::types::Vector2::ZERO;
|
||
vp.view_direction = vd3;
|
||
vp.view_height = view_height as f64;
|
||
vp.view_twist = twist;
|
||
}
|
||
|
||
// Persist the tiled layout as duplicate `*Active` VPort entries.
|
||
// The view lives entirely in the standard VPORT table now — no
|
||
// app-specific View record.
|
||
self.save_model_tiles_to_vports();
|
||
true
|
||
} else {
|
||
let target_wcs = acadrust::types::Vector3 {
|
||
x: cam.target.x as f64,
|
||
y: cam.target.y as f64,
|
||
z: cam.target.z as f64,
|
||
};
|
||
|
||
// The sheet viewport entity is the authoritative paper-space view;
|
||
// it round-trips natively, so no named-View side-channel is needed.
|
||
let sheet_handle = self.current_layout_sheet_viewport_handle();
|
||
if let Some(EntityType::Viewport(vp)) =
|
||
self.document.get_entity_mut(sheet_handle)
|
||
{
|
||
// AutoCAD stores the paper-space view position in
|
||
// `view_center` (DCS) with `view_target` at the origin —
|
||
// writing it the other way round shifts the layout and
|
||
// crashes nothing but renders the sheet off-place. Paper
|
||
// space is always a plan view, so DCS == WCS XY here.
|
||
vp.view_center =
|
||
acadrust::types::Vector3::new(target_wcs.x, target_wcs.y, 0.0);
|
||
vp.view_target = acadrust::types::Vector3::ZERO;
|
||
vp.view_direction = vd3;
|
||
vp.view_height = view_height as f64;
|
||
vp.twist_angle = twist;
|
||
}
|
||
true
|
||
}
|
||
}
|
||
|
||
|
||
/// Restore the camera from the file's saved view (called once on open).
|
||
/// Falls back to fit_all() if no saved view is available.
|
||
pub fn restore_saved_camera(&mut self) {
|
||
let restored = if self.current_layout == "Model" {
|
||
// Tiled-layout restore takes precedence — it sets the camera too.
|
||
// Single-tile files fall through to the *Active branch.
|
||
self.restore_model_tiles_from_vports() || self.apply_active_vport_camera()
|
||
} else {
|
||
// Every paper layout has a full-screen sheet viewport that holds
|
||
// its view; create one if a loaded file lacks it.
|
||
let layout = self.current_layout.clone();
|
||
self.ensure_sheet_viewport(&layout);
|
||
self.apply_sheet_viewport_camera()
|
||
};
|
||
if restored {
|
||
// The pose is the file's and must not move — but nothing has sized
|
||
// its near/far, so `depth_half_range` stays unset and the
|
||
// projection falls back to a guess scaled from the zoom distance.
|
||
// On a drawing whose geometry reaches far off its plane that guess
|
||
// is far too narrow and the geometry is silently clipped away.
|
||
self.fit_depth_to_saved_extents();
|
||
} else {
|
||
self.fit_all();
|
||
}
|
||
}
|
||
|
||
/// Size the camera's near/far from the drawing's own recorded extent,
|
||
/// leaving its pose alone.
|
||
///
|
||
/// `$EXTMIN`/`$EXTMAX` is untrustworthy for *positioning* — stale after an
|
||
/// edit, or the 1e20 sentinel when the writer never computed it (see the
|
||
/// `world_offset` selection notes) — which is why `fit_all` scans entities
|
||
/// instead. It is the right input *here*: a near/far that is too wide only
|
||
/// costs a little depth precision, while one that is too narrow deletes
|
||
/// geometry outright, so erring on the drawing's own claim is the safe
|
||
/// direction. It also costs nothing — no tessellation pass on open.
|
||
fn fit_depth_to_saved_extents(&mut self) {
|
||
// Same bound `model_space_extents`'s header fallback uses; rejects the
|
||
// sentinel and any garbage that would blow the range up.
|
||
const SANE_EXTENT: f64 = 1.0e16;
|
||
let h = &self.document.header;
|
||
let (lo, hi) = (h.model_space_extents_min, h.model_space_extents_max);
|
||
let ok = lo.x <= hi.x
|
||
&& lo.y <= hi.y
|
||
&& lo.z <= hi.z
|
||
&& [lo.x, lo.y, lo.z, hi.x, hi.y, hi.z]
|
||
.iter()
|
||
.all(|v| v.is_finite() && v.abs() < SANE_EXTENT);
|
||
if !ok {
|
||
return;
|
||
}
|
||
let min = glam::Vec3::new(lo.x as f32, lo.y as f32, lo.z as f32);
|
||
let max = glam::Vec3::new(hi.x as f32, hi.y as f32, hi.z as f32);
|
||
self.camera.borrow_mut().fit_depth_to_bounds(min, max);
|
||
}
|
||
|
||
fn fit_paper_space_extents(&mut self) {
|
||
let layout_block = self.current_layout_block_handle();
|
||
let mut min = glam::Vec3::splat(f32::INFINITY);
|
||
let mut max = glam::Vec3::splat(f32::NEG_INFINITY);
|
||
{
|
||
let mut include = |x: f64, y: f64, z: f64| {
|
||
const SANE_EXTENT: f64 = 1.0e16;
|
||
if x.is_finite()
|
||
&& y.is_finite()
|
||
&& z.is_finite()
|
||
&& x.abs() < SANE_EXTENT
|
||
&& y.abs() < SANE_EXTENT
|
||
&& z.abs() < SANE_EXTENT
|
||
{
|
||
let point = glam::Vec3::new(x as f32, y as f32, z as f32);
|
||
min = min.min(point);
|
||
max = max.max(point);
|
||
}
|
||
};
|
||
|
||
// The physical sheet is always part of Paper Space extents, even
|
||
// when the layout contains no entities (#539).
|
||
if let Some(((x0, y0), (x1, y1))) = self.paper_limits() {
|
||
include(x0, y0, 0.0);
|
||
include(x1, y1, 0.0);
|
||
}
|
||
|
||
// Paper entities and viewport borders belong to the sheet. Model
|
||
// content projected through those viewports deliberately does not.
|
||
for wire in self.wires_for_block_culled(layout_block, None, None, None, None) {
|
||
let is_infinite = Self::handle_from_wire_name(&wire.name)
|
||
.and_then(|handle| self.document.get_entity(handle))
|
||
.is_some_and(|entity| {
|
||
matches!(entity, EntityType::XLine(_) | EntityType::Ray(_))
|
||
});
|
||
if is_infinite {
|
||
for &[x, y, z] in &wire.key_vertices {
|
||
include(x, y, z);
|
||
}
|
||
} else {
|
||
for (index, &[x, y, z]) in wire.points.iter().enumerate() {
|
||
let low = wire.points_low.get(index).copied().unwrap_or([0.0; 3]);
|
||
include(
|
||
x as f64 + low[0] as f64,
|
||
y as f64 + low[1] as f64,
|
||
z as f64 + low[2] as f64,
|
||
);
|
||
}
|
||
}
|
||
}
|
||
|
||
// Hatches, wipeouts and raster images are GPU-only and may carry
|
||
// no normal wire outline, so include their visible paper bounds.
|
||
let (hatches, wipeouts, images) = self.paper_sheet_render_models();
|
||
for hatch in hatches.iter().chain(wipeouts.iter()) {
|
||
for &[x, y] in hatch.boundary.iter() {
|
||
include(
|
||
hatch.world_origin[0] + x as f64,
|
||
hatch.world_origin[1] + y as f64,
|
||
0.0,
|
||
);
|
||
}
|
||
}
|
||
for image in images.iter() {
|
||
for (corner, low) in image.corners.iter().zip(image.corners_low.iter()) {
|
||
include(
|
||
corner[0] as f64 + low[0] as f64,
|
||
corner[1] as f64 + low[1] as f64,
|
||
corner[2] as f64 + low[2] as f64,
|
||
);
|
||
}
|
||
}
|
||
}
|
||
|
||
if !min.is_finite() || !max.is_finite() {
|
||
return;
|
||
}
|
||
if min == max {
|
||
max += glam::Vec3::splat(1.0);
|
||
}
|
||
self.camera
|
||
.borrow_mut()
|
||
.fit_to_bounds(min, max, self.last_render_aspect.get().max(0.01));
|
||
self.camera_generation += 1;
|
||
}
|
||
|
||
pub fn fit_all(&mut self) {
|
||
if self.active_viewport.is_some() {
|
||
if let Some((mut min, mut max)) = self.model_space_extents() {
|
||
if min == max {
|
||
max += glam::Vec3::splat(1.0);
|
||
min -= glam::Vec3::splat(1.0);
|
||
}
|
||
self.fit_active_viewport_to_bounds(min, max);
|
||
}
|
||
return;
|
||
}
|
||
if self.current_layout != "Model" {
|
||
self.fit_paper_space_extents();
|
||
return;
|
||
}
|
||
|
||
// Use the FULL, un-culled wire set — not `entity_wires()`, which is
|
||
// frustum-culled to the current view. Culled input would fit only the
|
||
// entities already on screen, so each call would zoom out a little and
|
||
// reveal more, converging on the true extent only after several uses
|
||
// (issue #51). `wpp = None` also tessellates at a fixed tolerance so
|
||
// the bounds don't drift with zoom-adaptive curve sampling.
|
||
let layout_block = self.current_layout_block_handle();
|
||
let mut wires = self.wires_for_block_culled(layout_block, None, None, None, None);
|
||
// Ray / XLine tessellate as ±DISPLAY_EXTENT display segments
|
||
// (entities/ray.rs) — their endpoints are rendering artifacts, not
|
||
// drawing extent. A construction line through the drawing defeats
|
||
// both rejects below: its centroid sits at the base point (inside
|
||
// the consensus cluster), and in a fresh drawing `local_extent_max`
|
||
// is still the 1e9 default, so the far points pass the `lim` filter
|
||
// too (issue #284). Exclude them up front — an infinite construction
|
||
// line should never contribute to ZOOM Extents — and fall back to their
|
||
// base points if the drawing holds nothing else.
|
||
let mut infinite_base_pts: Vec<glam::Vec3> = Vec::new();
|
||
wires.retain(|w| {
|
||
let is_infinite = Self::handle_from_wire_name(&w.name)
|
||
.and_then(|h| self.document.get_entity(h))
|
||
.map(|e| matches!(e, EntityType::XLine(_) | EntityType::Ray(_)))
|
||
.unwrap_or(false);
|
||
if is_infinite {
|
||
infinite_base_pts.extend(
|
||
w.key_vertices
|
||
.iter()
|
||
.map(|v| glam::Vec3::new(v[0] as f32, v[1] as f32, v[2] as f32)),
|
||
);
|
||
}
|
||
!is_infinite
|
||
});
|
||
// 3D solids render as meshes, not wires, so collect their (offset-rel)
|
||
// XY AABBs separately — a drawing of only solids has no wires to fit.
|
||
let mesh_aabbs: Vec<[f32; 4]> = self
|
||
.meshes
|
||
.iter()
|
||
.filter(|(h, _)| {
|
||
self.document
|
||
.get_entity(**h)
|
||
.map(|e| e.common().owner_handle == layout_block)
|
||
.unwrap_or(false)
|
||
})
|
||
.map(|(_, set)| set.world_aabb)
|
||
.filter(|a| a[0].is_finite() && a[2].is_finite())
|
||
.collect();
|
||
if wires.is_empty() && mesh_aabbs.is_empty() && infinite_base_pts.is_empty() {
|
||
return;
|
||
}
|
||
|
||
// Per-wire centroid pass — used both for the absolute-magnitude reject
|
||
// (`local_extent_max`) and for the IQR-based outlier reject below.
|
||
// A wire whose centroid sits far outside the drawing's consensus
|
||
// cluster is an orphan (block-defn entity that leaked into MSPACE,
|
||
// bogus hatch boundary, Ray/XLine far point) and must not poison the
|
||
// bounding box.
|
||
struct WireCent {
|
||
idx: usize,
|
||
cx: f32,
|
||
cy: f32,
|
||
}
|
||
let lim = self.local_extent_max;
|
||
let mut cents: Vec<WireCent> = Vec::with_capacity(wires.len());
|
||
for (idx, wire) in wires.iter().enumerate() {
|
||
let mut sx = 0.0_f64;
|
||
let mut sy = 0.0_f64;
|
||
let mut n = 0_usize;
|
||
for &[x, y, _] in &wire.points {
|
||
if !x.is_finite() || !y.is_finite() {
|
||
continue;
|
||
}
|
||
sx += x as f64;
|
||
sy += y as f64;
|
||
n += 1;
|
||
}
|
||
if n > 0 {
|
||
cents.push(WireCent {
|
||
idx,
|
||
cx: (sx / n as f64) as f32,
|
||
cy: (sy / n as f64) as f32,
|
||
});
|
||
}
|
||
}
|
||
if cents.is_empty() && mesh_aabbs.is_empty() && infinite_base_pts.is_empty() {
|
||
return;
|
||
}
|
||
|
||
// Robust drawing centre (median centroid). `lim` is a span RELATIVE to
|
||
// this centre, so every reject below is distance-from-centre — geometry
|
||
// now reaches fit_all as absolute coordinates (no world_offset), which
|
||
// at UTM scale are ~5.7e6; an absolute `|x| > lim` test would reject the
|
||
// entire drawing and make ZOOM Extents a no-op.
|
||
let (mcx, mcy) = {
|
||
let mut xs: Vec<f32> = cents.iter().map(|c| c.cx).collect();
|
||
let mut ys: Vec<f32> = cents.iter().map(|c| c.cy).collect();
|
||
if xs.is_empty() {
|
||
(0.0_f32, 0.0_f32)
|
||
} else {
|
||
xs.sort_by(|a, b| a.partial_cmp(b).unwrap_or(std::cmp::Ordering::Equal));
|
||
ys.sort_by(|a, b| a.partial_cmp(b).unwrap_or(std::cmp::Ordering::Equal));
|
||
(xs[xs.len() / 2], ys[ys.len() / 2])
|
||
}
|
||
};
|
||
|
||
// IQR-based reject only kicks in with enough samples for the quartiles
|
||
// to be meaningful. Below that, the centre-relative `lim` filter is the
|
||
// only gate (legacy behavior).
|
||
let (rx_lo, rx_hi, ry_lo, ry_hi) = if cents.len() >= 8 {
|
||
let mut xs: Vec<f32> = cents.iter().map(|c| c.cx).collect();
|
||
let mut ys: Vec<f32> = cents.iter().map(|c| c.cy).collect();
|
||
xs.sort_by(|a, b| a.partial_cmp(b).unwrap_or(std::cmp::Ordering::Equal));
|
||
ys.sort_by(|a, b| a.partial_cmp(b).unwrap_or(std::cmp::Ordering::Equal));
|
||
let q = |v: &[f32], frac: f32| v[((v.len() as f32 - 1.0) * frac) as usize];
|
||
let q1x = q(&xs, 0.25);
|
||
let q3x = q(&xs, 0.75);
|
||
let q1y = q(&ys, 0.25);
|
||
let q3y = q(&ys, 0.75);
|
||
// k=10× the inter-quartile span is permissive enough to keep
|
||
// legitimate sparse outlying geometry (annotation labels, scattered
|
||
// dim leaders) but tight enough to drop a single wire stranded at
|
||
// -world_offset. `max(1.0)` guards against a degenerate IQR=0
|
||
// (e.g. all wires at the same centroid).
|
||
const K: f32 = 10.0;
|
||
let dx = (q3x - q1x).max(1.0) * K;
|
||
let dy = (q3y - q1y).max(1.0) * K;
|
||
(q1x - dx, q3x + dx, q1y - dy, q3y + dy)
|
||
} else {
|
||
(mcx - lim, mcx + lim, mcy - lim, mcy + lim)
|
||
};
|
||
|
||
let mut min = glam::Vec3::splat(f32::MAX);
|
||
let mut max = glam::Vec3::splat(f32::MIN);
|
||
for c in ¢s {
|
||
if c.cx < rx_lo || c.cx > rx_hi || c.cy < ry_lo || c.cy > ry_hi {
|
||
continue;
|
||
}
|
||
let wire = &wires[c.idx];
|
||
for &[x, y, z] in &wire.points {
|
||
if !x.is_finite() || !y.is_finite() || !z.is_finite() {
|
||
continue;
|
||
}
|
||
if (x - mcx).abs() > lim || (y - mcy).abs() > lim {
|
||
continue;
|
||
}
|
||
min = min.min(glam::Vec3::new(x, y, z));
|
||
max = max.max(glam::Vec3::new(x, y, z));
|
||
}
|
||
}
|
||
// Fold in 3D-solid mesh AABBs (not subject to the wire IQR reject).
|
||
for [ax, ay, bx, by] in &mesh_aabbs {
|
||
min = min.min(glam::Vec3::new(*ax, *ay, 0.0));
|
||
max = max.max(glam::Vec3::new(*bx, *by, 0.0));
|
||
}
|
||
// Drawing holds only infinite construction geometry: fit the view to
|
||
// its base points rather than leaving the camera unchanged.
|
||
if min.x > max.x {
|
||
for p in &infinite_base_pts {
|
||
min = min.min(*p);
|
||
max = max.max(*p);
|
||
}
|
||
}
|
||
// If no usable points found, leave the camera unchanged.
|
||
if min.x > max.x {
|
||
return;
|
||
}
|
||
if min == max {
|
||
max += glam::Vec3::splat(1.0);
|
||
}
|
||
let aspect = self.active_camera_aspect();
|
||
self.camera.borrow_mut().fit_to_bounds(min, max, aspect);
|
||
self.camera_generation += 1;
|
||
}
|
||
|
||
/// Fit every tiled Model viewport independently. The drawing bounds are
|
||
/// shared, but each tile keeps its own orientation and uses its own screen
|
||
/// aspect when calculating the required zoom.
|
||
pub fn fit_all_model_viewports(&mut self) {
|
||
if self.current_layout != "Model" || self.model_tiles.borrow().len() <= 1 {
|
||
self.fit_all();
|
||
return;
|
||
}
|
||
let generation_before = self.camera_generation;
|
||
self.fit_all();
|
||
if self.camera_generation == generation_before {
|
||
return;
|
||
}
|
||
let Some((min, max)) = self.camera.borrow().fitted_model_bounds() else {
|
||
return;
|
||
};
|
||
|
||
let (canvas_w, canvas_h) = self.selection.borrow().vp_size;
|
||
let fallback = self.last_render_aspect.get().max(0.01);
|
||
let aspects: Vec<f32> = self
|
||
.model_tiles
|
||
.borrow()
|
||
.iter()
|
||
.map(|tile| {
|
||
let width = tile.rect.width * canvas_w;
|
||
let height = tile.rect.height * canvas_h;
|
||
if width.is_finite() && height.is_finite() && width > 0.0 && height > 0.0 {
|
||
width / height
|
||
} else {
|
||
fallback
|
||
}
|
||
})
|
||
.collect();
|
||
let active = self
|
||
.active_model_tile
|
||
.get()
|
||
.min(aspects.len().saturating_sub(1));
|
||
let live_camera = self.camera.borrow_mut();
|
||
let mut tiles = self.model_tiles.borrow_mut();
|
||
for (index, tile) in tiles.iter_mut().enumerate() {
|
||
let aspect = aspects.get(index).copied().unwrap_or(fallback);
|
||
if index == active {
|
||
tile.camera = live_camera.clone();
|
||
} else {
|
||
tile.camera.fit_to_bounds(min, max, aspect);
|
||
}
|
||
}
|
||
if let Some(aspect) = aspects.get(active) {
|
||
self.last_render_aspect.set(*aspect);
|
||
}
|
||
self.camera_generation += 1;
|
||
}
|
||
|
||
pub fn update(&mut self, _dt: Duration) {}
|
||
}
|