CAM: Suppress rendering of first rapids (#25440)

src/Mod/CAM/Gui/DlgSettingsPathColor.cpp

@@ -63,6 +63,7 @@ void DlgSettingsPathColor::saveSettings()
     ui->DefaultBBoxNormalColor->onSave();
     ui->DefaultSelectionStyle->onSave();
     ui->DefaultTaskPanelLayout->onSave();
+    ui->HideFirstRapid->onSave();
 }
 
 void DlgSettingsPathColor::loadSettings()
@@ -78,6 +79,7 @@ void DlgSettingsPathColor::loadSettings()
     ui->DefaultBBoxNormalColor->onRestore();
     ui->DefaultSelectionStyle->onRestore();
     ui->DefaultTaskPanelLayout->onRestore();
+    ui->HideFirstRapid->onRestore();
 }
 
 /**

src/Mod/CAM/Gui/DlgSettingsPathColor.ui

@@ -398,6 +398,32 @@
         </item>
        </widget>
       </item>
+      <item row="2" column="0">
+       <widget class="QLabel" name="label_13">
+        <property name="text">
+         <string>Hide first rapid move</string>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="1">
+       <widget class="Gui::PrefCheckBox" name="HideFirstRapid">
+        <property name="toolTip">
+         <string>Hide the initial rapid move in path visualization by setting the start index to the first feed move</string>
+        </property>
+        <property name="text">
+         <string/>
+        </property>
+        <property name="checked">
+         <bool>false</bool>
+        </property>
+        <property name="prefEntry" stdset="0">
+         <cstring>HideFirstRapid</cstring>
+        </property>
+        <property name="prefPath" stdset="0">
+         <cstring>Mod/CAM</cstring>
+        </property>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>
@@ -424,6 +450,11 @@
    <extends>QComboBox</extends>
    <header>Gui/PrefWidgets.h</header>
   </customwidget>
+  <customwidget>
+   <class>Gui::PrefCheckBox</class>
+   <extends>QCheckBox</extends>
+   <header>Gui/PrefWidgets.h</header>
+  </customwidget>
  </customwidgets>
  <tabstops>
   <tabstop>DefaultNormalPathColor</tabstop>

src/Mod/CAM/Gui/ViewProviderPath.cpp

@@ -41,6 +41,7 @@
 #include <App/DocumentObject.h>
 #include <Base/Parameter.h>
 #include <Base/Stream.h>
+#include <Mod/CAM/App/Command.h>
 #include <Gui/Application.h>
 #include <Gui/BitmapFactory.h>
 #include <Gui/Inventor/SoAxisCrossKit.h>
@@ -496,6 +497,28 @@ void ViewProviderPath::updateData(const App::Property* prop)
 {
     Path::Feature* pcPathObj = static_cast<Path::Feature*>(pcObject);
     if (prop == &pcPathObj->Path) {
+        // Check if we should hide the first rapid moves
+        ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath(
+            "User parameter:BaseApp/Preferences/Mod/CAM"
+        );
+        bool hideFirstRapid = hGrp->GetBool("HideFirstRapid", false);
+
+        if (hideFirstRapid) {
+            // Find the first feed move and set StartIndex accordingly
+            long firstFeedIndex = findFirstFeedMoveIndex(pcPathObj->Path.getValue());
+            if (firstFeedIndex > 0) {
+                StartIndex.setValue(firstFeedIndex);
+                StartIndex.purgeTouched();
+            }
+        }
+        else {
+            // Reset StartIndex to show all commands from the beginning
+            if (StartIndex.getValue() != 0) {
+                StartIndex.setValue(0);
+                StartIndex.purgeTouched();
+            }
+        }
+
         updateVisual(true);
         return;
     }
@@ -826,9 +849,37 @@ void ViewProviderPath::recomputeBoundingBox()
     pcBoundingBox->maxBounds.setValue(MaxX, MaxY, MaxZ);
 }
 
+long ViewProviderPath::findFirstFeedMoveIndex(const Path::Toolpath& path) const
+{
+    const std::vector<Path::Command*>& commands = path.getCommands();
+    for (size_t i = 0; i < commands.size(); ++i) {
+        const Path::Command* cmd = commands[i];
+        if (!cmd) {
+            continue;
+        }
+        std::string name = cmd->Name;
+
+        // Skip comments and empty commands
+        if (name.empty() || name[0] == '(' || name[0] == ';' || name[0] == '%') {
+            continue;
+        }
+
+        // Skip rapid moves (G0)
+        if (name == "G0" || name == "G00") {
+            continue;
+        }
+
+        // Found the first non-rapid move
+        return static_cast<long>(i);
+    }
+
+    // If no feed move found, return 0 to show from the beginning
+    return 0;
+}
+
 QIcon ViewProviderPath::getIcon() const
 {
-    return Gui::BitmapFactory().pixmap("CAM_Toolpath");
+    return Gui::BitmapFactory().pixmap("Path-ToolPath");
 }
 
 // Python object -----------------------------------------------------------------------

src/Mod/CAM/Gui/ViewProviderPath.h

@@ -41,6 +41,11 @@ class SoMaterialBinding;
 class SoTransform;
 class SoSwitch;
 
+namespace Path
+{
+class Toolpath;
+}
+
 namespace PathGui
 {
 
@@ -89,6 +94,10 @@ public:
 
     friend class PathSelectionObserver;
 
+private:
+    /// Find the index of the first non-rapid move command
+    long findFirstFeedMoveIndex(const Path::Toolpath& path) const;
+
 protected:
     void onChanged(const App::Property* prop) override;
     unsigned long getBoundColor() const override;