SLA clipping plane can now be controlled by Ctrl + mouse wheel rotation

src/slic3r/GUI/GLCanvas3D.cpp

@@ -2374,6 +2374,10 @@ void GLCanvas3D::on_mouse_wheel(wxMouseEvent& evt)
         }
     }
 
+    // Inform gizmos about the event so they have the opportunity to react.
+    if (m_gizmos.on_mouse_wheel(evt, *this))
+        return;
+
     // Calculate the zoom delta and apply it to the current zoom factor
     float zoom = (float)evt.GetWheelRotation() / (float)evt.GetWheelDelta();
     set_camera_zoom(zoom);

src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp

@@ -708,6 +708,18 @@ bool GLGizmoSlaSupports::gizmo_event(SLAGizmoEventType action, const Vec2d& mous
         }
     }
 
+    if (action == SLAGizmoEventType::MouseWheelUp && control_down) {
+        m_clipping_plane_distance = std::min(1.f, m_clipping_plane_distance + 0.01f);
+        m_parent.set_as_dirty();
+        return true;
+    }
+
+    if (action == SLAGizmoEventType::MouseWheelDown && control_down) {
+        m_clipping_plane_distance = std::max(0.f, m_clipping_plane_distance - 0.01f);
+        m_parent.set_as_dirty();
+        return true;
+    }
+
     return false;
 }
 

src/slic3r/GUI/Gizmos/GLGizmos.hpp

@@ -14,7 +14,9 @@ enum class SLAGizmoEventType {
     ApplyChanges,
     DiscardChanges,
     AutomaticGeneration,
-    ManualEditing
+    ManualEditing,
+    MouseWheelUp,
+    MouseWheelDown
 };
 
 #include "slic3r/GUI/Gizmos/GLGizmoMove.hpp"

src/slic3r/GUI/Gizmos/GLGizmosManager.cpp

@@ -520,6 +520,23 @@ void GLGizmosManager::render_overlay(const GLCanvas3D& canvas, const Selection&
     glsafe(::glPopMatrix());
 }
 
+
+
+bool GLGizmosManager::on_mouse_wheel(wxMouseEvent& evt, GLCanvas3D& canvas)
+{
+    bool processed = false;
+
+    if (m_current == SlaSupports) {
+        float rot = (float)evt.GetWheelRotation() / (float)evt.GetWheelDelta();
+        if (gizmo_event((rot > 0.f ? SLAGizmoEventType::MouseWheelUp : SLAGizmoEventType::MouseWheelDown), Vec2d::Zero(), evt.ShiftDown(), evt.AltDown(), evt.ControlDown()))
+            processed = true;
+    }
+
+    return processed;
+}
+
+
+
 bool GLGizmosManager::on_mouse(wxMouseEvent& evt, GLCanvas3D& canvas)
 {
     Point pos(evt.GetX(), evt.GetY());

src/slic3r/GUI/Gizmos/GLGizmosManager.hpp

@@ -157,6 +157,7 @@ public:
     const std::string& get_tooltip() const { return m_tooltip; }
 
     bool on_mouse(wxMouseEvent& evt, GLCanvas3D& canvas);
+    bool on_mouse_wheel(wxMouseEvent& evt, GLCanvas3D& canvas);
     bool on_char(wxKeyEvent& evt, GLCanvas3D& canvas);
     bool on_key(wxKeyEvent& evt, GLCanvas3D& canvas);