Improve STL workflows and toolpath rendering

Author: MaestroFusion360

CHANGELOG.md

@@ -1,5 +1,20 @@
 # Changelog
 
+## 1.7.0 - 2026-09-29
+
+- Corrected physical milling views for horizontal and vertical spindle profiles, including camera orientation and restoring the selected view after changing kinematics.
+- Fixed toolpath segments disappearing during middle-button orbit by refreshing orthographic camera clipping after rotation.
+- Show the active 3D/Top/Front/Left view as a checked, mutually exclusive toolbar action; add visible theme-aware hover and pressed states to the main toolbars.
+- Enable Save only when the editor has unsaved changes, and restore its disabled state after saving or opening a file.
+- Add action icons to STL Objects controls, hide the selected object's pivot marker with the panel, and log load, delete, transform, array and section timings.
+- Fixed STL section cap winding for all three axes, including Y-plane handedness; a cut coincident with an outer mesh face now retains that face instead of opening the shell.
+- Triangulate section caps with nested contours as polygons with holes, preserving hollow regions in tubes and enclosed cavities.
+- Replaced the section-cap Python ear-clipping and manual hole bridging with `mapbox-earcut`; preserve holes and disconnected contours, restore collinear boundary vertices for watertight caps, and keep cap normals aligned with the selected side. On `assets/stl/test4.stl` (14,522 triangles, midplane cuts), `clip_mesh` measured X 345 ms, Y 396 ms and Z 350 ms, down from 2,577/18,906/3,651 ms.
+- Keep the active section mesh in the plot after `loadPlot()`, and refresh both the visible cut and hidden source mesh when STL color or wireframe settings change.
+- Preserve STL undo history when importing after Clear STL or deleting the final object.
+- Reject cumulative STL scales that overflow float32 coordinates, collapse non-degenerate faces, or invalidate an originally closed mesh; report rejected GUI scaling in the status bar.
+- Added section-cap regression coverage for convex and concave contours, holes, disconnected outer contours, large polygon-with-hole earcut usage, X/Y/Z orientation, both kept sides and watertight results; retain coverage for face-coincident cuts, repeated scaling, plot reloads, appearance refresh and import/clear history.
+
 ## 1.6.9 - 2026-09-29
 
 - Switched the milling 3D camera to an orthographic CAD projection and kept it orthographic while orbiting from fixed views, so apparent feature size does not change with depth.

FAQ.md

@@ -1,6 +1,6 @@
 # Easy G-Code Plot FAQ
 
-This document is the detailed user and developer reference for Easy G-Code Plot. It reflects the current 1.6.9 tree and explains the GUI, deterministic FANUC execution kernel, Macro B runtime, turning and milling cycles, indexed rotary behavior, diagnostics, CLI, batch analysis and export behavior.
+This document is the detailed user and developer reference for Easy G-Code Plot. It reflects the current 1.7.0 tree and explains the GUI, deterministic FANUC execution kernel, Macro B runtime, turning and milling cycles, indexed rotary behavior, diagnostics, CLI, batch analysis and export behavior.
 
 The same FAQ can be packaged for offline use in **Help → FAQ**.
 

FAQ_RU.md

@@ -1,6 +1,6 @@
 # Easy G-Code Plot: часто задаваемые вопросы
 
-Этот документ представляет собой подробное справочное руководство для пользователей и разработчиков Easy G-Code Plot. Он отражает текущую кодовую базу версии 1.6.9 и предназначен для объяснения графического интерфейса, детерминированного ядра выполнения FANUC, среды Macro B, циклов точения и фрезерования, диагностики, CLI, пакетного анализа и экспорта.
+Этот документ представляет собой подробное справочное руководство для пользователей и разработчиков Easy G-Code Plot. Он отражает текущую кодовую базу версии 1.7.0 и предназначен для объяснения графического интерфейса, детерминированного ядра выполнения FANUC, среды Macro B, циклов точения и фрезерования, диагностики, CLI, пакетного анализа и экспорта.
 
 Тот же FAQ может быть упакован для автономного использования в **Справка → FAQ**.
 

app/main_window.py

@@ -94,7 +94,7 @@ def __init__(self):
         self.ui.setupUi(self)
         self._configure_runtime_ui()
         self._configure_playback_speed_slider()
-        self._plot_navigation = PlotNavigation(self.ui.graphicsView, self._update_adaptive_grid, self._pick_trace_at)
+        self._plot_navigation = PlotNavigation(self.ui.graphicsView, self._plot_camera_changed, self._pick_trace_at)
         self.ui.graphicsView.installEventFilter(self._plot_navigation)
 
         icon = QIcon()
@@ -180,12 +180,22 @@ def _select_rotary_kinematics(self, profile_id, *, force_refresh=False):
 
         if not (changed or force_refresh):
             return
-        if changed and not getattr(self, "latheMode", False) and getattr(self, "_view_mode", "3d") == "3d":
-            self.view3d()
+        view_mode = getattr(self, "_view_mode", "3d")
         self._deferred_execution_result = None
         self._deferred_execution_source = None
         if self.ui.editor.text():
             self.updateData()
+        # Reapply after updateData: it redraws the scene and can restore a
+        # previous camera state, including a quaternion left by table B.
+        if not getattr(self, "latheMode", False):
+            if view_mode == "top":
+                self.viewTop()
+            elif view_mode == "front":
+                self.viewFront()
+            elif view_mode == "left":
+                self.viewLeft()
+            else:
+                self.view3d()
 
     def _configure_runtime_ui(self):
         """Attach runtime-only widgets and action groups to the generated Designer UI."""
@@ -198,6 +208,12 @@ def _configure_runtime_ui(self):
         self.ui.menuSettings.insertAction(self.ui.actionWCS, self.ui.actionStock)
         self.ui.menuCNC_Functions.addSeparator()
         self.ui.cncToolBar.addSeparator()
+        self.viewActionGroup = QActionGroup(self)
+        self.viewActionGroup.setExclusive(True)
+        for action in (self.ui.action3D, self.ui.actionTop, self.ui.actionFront, self.ui.actionLeft):
+            action.setCheckable(True)
+            self.viewActionGroup.addAction(action)
+        self.ui.action3D.setChecked(True)
         for name, text, icon_path in (
             (
                 "actionHoleCalculator",
@@ -498,6 +514,7 @@ def connectActions(self):
         self.ui.actionStep_Forward.triggered.connect(self.forward)
 
         self.ui.editor.modificationChanged.connect(self.documentWasModified)
+        self.ui.actionSave.setEnabled(self.ui.editor.isModified())
         self.ui.editor.textChanged.connect(self.scheduleAutoUpdate)
         self.ui.editor.cursorPositionChanged.connect(self.updateStatusBar)
         self.ui.editor.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)