Interface mockup 17

src/ifcviewer/ViewportWindow.cpp

@@ -1547,6 +1547,20 @@ void ViewportWindow::showAllElements() {
     visibility_.showAll();
 }
 
+void ViewportWindow::invertElementVisibility() {
+    std::unordered_set<uint32_t> inverted;
+    for (const auto& [mid, m] : models_gpu_) {
+        if (m.hidden) continue;
+        for (const InstanceCpu& inst : m.instances) {
+            if (inst.object_id == 0) continue;
+            if (!visibility_.isHidden(inst.object_id)) {
+                inverted.insert(inst.object_id);
+            }
+        }
+    }
+    visibility_.setHidden(inverted);
+}
+
 void ViewportWindow::setCamera(float tx, float ty, float tz,
                                 float dist, float yaw, float pitch) {
     camera_target_ = QVector3D(tx, ty, tz);
@@ -1641,16 +1655,34 @@ void ViewportWindow::frameAabb(const QVector3D& mn, const QVector3D& mx,
 
 void ViewportWindow::focusOnSelectedObject() {
     if (camera_mode_ == CameraMode::Fps) return;
-    // F frames the *active* object so it's predictable across multi-select
-    // states.  Framing the union of every selected member would be more
-    // expansive but ambiguous in a large set.
-    const uint32_t target = selection_.activeObjectId();
-    QVector3D mn, mx;
-    if (!computeObjectAabb(target, mn, mx)) {
+    const auto& sel = selection_.selectionIds();
+    if (sel.empty()) {
         qDebug("Focus: no object selected or no AABB available");
         return;
     }
-    frameAabb(mn, mx, 1.30f);  // a bit of headroom around small objects
+
+    bool found = false;
+    QVector3D lo(std::numeric_limits<float>::max(),
+                 std::numeric_limits<float>::max(),
+                 std::numeric_limits<float>::max());
+    QVector3D hi(-std::numeric_limits<float>::max(),
+                 -std::numeric_limits<float>::max(),
+                 -std::numeric_limits<float>::max());
+    for (uint32_t object_id : sel) {
+        QVector3D mn, mx;
+        if (!computeObjectAabb(object_id, mn, mx)) continue;
+        for (int a = 0; a < 3; ++a) {
+            if (mn[a] < lo[a]) lo[a] = mn[a];
+            if (mx[a] > hi[a]) hi[a] = mx[a];
+        }
+        found = true;
+    }
+
+    if (!found) {
+        qDebug("Focus: no object selected or no AABB available");
+        return;
+    }
+    frameAabb(lo, hi, 1.30f);
 }
 
 void ViewportWindow::viewAll() {
@@ -1758,23 +1790,6 @@ void ViewportWindow::keyPressEvent(QKeyEvent* event) {
         }
         return;
     }
-    // K toggles the section tool.
-    if (key == Qt::Key_K
-        && event->modifiers() == Qt::NoModifier
-        && !event->isAutoRepeat()) {
-        toggleSectionTool();
-        return;
-    }
-    // Shift+K clears every section plane (and the selection).
-    if (key == Qt::Key_K
-        && event->modifiers() == Qt::ShiftModifier
-        && !event->isAutoRepeat()) {
-        clearSectionPlanes();
-        section_plane_selected_ = -1;
-        section_drag_active_ = false;
-        section_drag_index_  = -1;
-        return;
-    }
     // While the section tool is active: Esc exits the tool, Delete removes
     // the selected plane.
     if (section_tool_active_) {

src/ifcviewer/ViewportWindow.h

@@ -351,6 +351,9 @@ public:
     // Model-level `hidden` flags are not touched — a hidden model stays
     // hidden, matching the user's expectation of "show all *elements*".
     void showAllElements();
+    // Flip element-level visibility across every live element in visible
+    // models. Model-hidden objects are skipped and remain model-hidden.
+    void invertElementVisibility();
 
     // Extended pick: returns the object id, world-space hit point, and
     // world-space surface normal at (x, y).  Renders the same pick pass as
@@ -399,10 +402,9 @@ public:
     void setBenchmarkFrames(int n);
     QString cameraString() const;
 
-    // Move camera_target_ to the selected object's world-AABB centroid and
-    // dolly camera_distance_ so the object's bounding sphere fits the
-    // current viewport.  Yaw/pitch are preserved.  No-op if no object is
-    // selected or its AABB is unknown.
+    // Move camera_target_ to the selected set's world-AABB centroid and
+    // dolly camera_distance_ so the union fits the current viewport.
+    // Yaw/pitch are preserved.  No-op if no selected object has an AABB.
     void focusOnSelectedObject();
     // Frame the union of all finalized models.  No-op if the scene is empty.
     void viewAll();

src/interface/MainWindow.cpp

@@ -110,6 +110,12 @@ void MainWindow::setupChrome() {
     bind_shortcut(QKeySequence(Qt::SHIFT | Qt::Key_F), [this]() {
         viewport_controller_->setFlyMode();
     });
+    bind_shortcut(QKeySequence(Qt::Key_K), [this]() {
+        viewport_controller_->toggleSectionMode();
+    });
+    bind_shortcut(QKeySequence(Qt::SHIFT | Qt::Key_K), [this]() {
+        viewport_controller_->clearSectionPlanes();
+    });
     bind_shortcut(QKeySequence(Qt::Key_H), [this]() {
         viewport_controller_->hideSelectedElements();
     });
@@ -212,7 +218,7 @@ QWidget* MainWindow::buildNavigateRibbonPage() {
     });
     auto* view_selected = components::buttons::makeButton("View Selected", ":/icons/cube-scan-solid.svg", this);
     connect(view_selected, &QToolButton::clicked, this, [this]() {
-        if (viewport_widget_) viewport_widget_->viewport()->focusOnSelectedObject();
+        viewport_controller_->focusSelectedObject();
     });
 
     auto* plan_view = components::buttons::makeButton("Plan", ":/icons/planimetry.svg", this);
@@ -243,10 +249,14 @@ QWidget* MainWindow::buildNavigateRibbonPage() {
     connect(fly_mode, &QToolButton::clicked, this, [this]() {
         viewport_controller_->setFlyMode();
     });
+    auto* section_mode = components::buttons::makeButton("Section", ":/icons/cube-cut-with-curve.svg", this);
+    connect(section_mode, &QToolButton::clicked, this, [this]() {
+        viewport_controller_->toggleSectionMode();
+    });
 
     row->addWidget(components::buttons::makeButtonGroup("CAMERA", {set_home, go_home, view_all, view_selected}, this));
     row->addWidget(components::buttons::makeButtonGroup("ORIENTATION", {plan_view, front_view, side_view, align_object, projection_button}, this));
-    row->addWidget(components::buttons::makeButtonGroup("MODE", {fly_mode}, this));
+    row->addWidget(components::buttons::makeButtonGroup("MODE", {fly_mode, section_mode}, this));
     row->addStretch(1);
     return page;
 }
@@ -272,7 +282,7 @@ QWidget* MainWindow::buildInspectRibbonPage() {
     });
     auto* invert_selection = components::buttons::makeButton("Invert", ":/icons/intersect.svg", this);
     connect(invert_selection, &QToolButton::clicked, this, [this]() {
-        session_state_->setStatusMessage("Selection", "Invert selection coming soon");
+        viewport_controller_->invertSelection();
     });
 
     auto* distance = components::buttons::makeButton("Distance", ":/icons/select-edge3d.svg", this);

src/interface/icons/cube-cut-with-curve.svg

@@ -0,0 +1,9 @@
+<svg width="24" height="24" viewBox="0 0 24 24" stroke-width="1.5" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M3.52844 7.29346L9 10.3332" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M22 2L20 2M12 12L12 10C12 6.45478 14.3061 3.44817 17.5 2.39838" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M22 12L20 12M12 22L12 20C12 16.4548 14.3061 13.4482 17.5 12.3984" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M12 22L3.30861 17.1715C3.11813 17.0656 3 16.8649 3 16.647L2.99998 7.35304C2.99998 7.13514 3.11812 6.93437 3.3086 6.82855L11.7086 2.16188C11.8898 2.06121 12.1102 2.06121 12.2914 2.16188L15 3.66667" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M12 11.9999L3.52842 7.29346" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M12 21L12 12" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M15 13.5L15 4" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

src/interface/icons/rotate-camera-right.svg

@@ -1,6 +0,0 @@
-<svg width="24" height="24" stroke-width="1.5" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M22.0028 3V7.49704C22.0028 7.77482 21.7776 8 21.4998 8V8C21.2999 8 21.12 7.88104 21.034 7.70059C19.4262 4.32948 15.9866 2 12.0028 2C6.81746 2 2.55391 5.94668 2.05219 11" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
-<path d="M6 16.4V9.39365C6 9.06228 6.26863 8.79365 6.6 8.79365H7.77283C7.97677 8.79365 8.16674 8.69006 8.2772 8.51863L9.7228 6.27502C9.83326 6.10359 10.0232 6 10.2272 6H13.7728C13.9768 6 14.1667 6.10359 14.2772 6.27502L15.7228 8.51863C15.8333 8.69006 16.0232 8.79365 16.2272 8.79365H17.4C17.7314 8.79365 18 9.06228 18 9.39365V16.4C18 16.7314 17.7314 17 17.4 17H6.6C6.26863 17 6 16.7314 6 16.4Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
-<path d="M12 14C13.1046 14 14 13.1046 14 12C14 10.8954 13.1046 10 12 10C10.8954 10 10 10.8954 10 12C10 13.1046 10.8954 14 12 14Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
-<path d="M2.05078 21V16.503C2.05078 16.2252 2.27596 16 2.55374 16V16C2.75366 16 2.93357 16.119 3.01963 16.2994C4.62737 19.6705 8.06703 22 12.0508 22C17.2361 22 21.4997 18.0533 22.0014 13" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
-</svg>

src/interface/interface_resources.qrc

@@ -22,8 +22,8 @@
         <file alias="building.svg">icons/building.svg</file>
         <file alias="cellar.svg">icons/cellar.svg</file>
         <file alias="perspective-view.svg">icons/perspective-view.svg</file>
-        <file alias="rotate-camera-right.svg">icons/rotate-camera-right.svg</file>
         <file alias="drone.svg">icons/drone.svg</file>
+        <file alias="cube-cut-with-curve.svg">icons/cube-cut-with-curve.svg</file>
         <file alias="folder-plus.svg">icons/folder-plus.svg</file>
         <file alias="folder-minus.svg">icons/folder-minus.svg</file>
         <file alias="folder.svg">icons/folder.svg</file>

src/interface/modules/viewport/Controller.cpp

@@ -235,6 +235,20 @@ void ViewportController::setFlyMode() {
     session_state_->setStatusMessage("Mode", "Fly mode active");
 }
 
+void ViewportController::toggleSectionMode() {
+    viewport_->toggleSectionTool();
+    if (viewport_->sectionToolActive()) {
+        session_state_->setStatusMessage("Section", "Section tool active");
+    } else {
+        session_state_->setStatusMessage("Section", "Section tool off");
+    }
+}
+
+void ViewportController::clearSectionPlanes() {
+    viewport_->clearSectionPlanes();
+    session_state_->setStatusMessage("Section", "Section planes cleared");
+}
+
 void ViewportController::toggleDistanceMode() {
     viewport_->toggleLengthTool();
 }
@@ -247,6 +261,10 @@ void ViewportController::toggleVolumeMode() {
     viewport_->toggleVolumeTool();
 }
 
+void ViewportController::focusSelectedObject() {
+    viewport_->focusOnSelectedObject();
+}
+
 void ViewportController::hideSelectedElements() {
     viewport_->hideSelectedElements();
 }
@@ -259,6 +277,10 @@ void ViewportController::showAllElements() {
     viewport_->showAllElements();
 }
 
+void ViewportController::invertSelection() {
+    viewport_->invertElementVisibility();
+}
+
 void ViewportController::updateVolumeReadout() {
     if (viewport_->toolMode() != ViewportWindow::ToolMode::Volume) return;
 

src/interface/modules/viewport/Controller.h

@@ -44,12 +44,16 @@ public:
     void setHomeView();
     void goHomeView();
     void setFlyMode();
+    void toggleSectionMode();
+    void clearSectionPlanes();
     void toggleDistanceMode();
     void toggleAreaMode();
     void toggleVolumeMode();
+    void focusSelectedObject();
     void hideSelectedElements();
     void isolateSelectedElements();
     void showAllElements();
+    void invertSelection();
 
 private:
     void applyCoordinateOperation(uint32_t mid);