Scale emulated spiral Z-hop segments based on slicing resolution (#11556)

Spiral Z-Hop resolution

Use slicing resolution to determine segment count for emulated spiral Z-hop

What’s changed

The number of linear segments used to approximate a spiral Z-hop is now derived from the PrintConfig resolution value.

The segment count is clamped to a safe range (4–24) to avoid excessive G-code generation or MCU queue overflow.

Why

Previously a fixed 24 segments were always used, regardless of model resolution.

For small-radius spiral lifts this was excessive and could overwhelm some printers.

Adapting segment count to resolution ensures smooth motion where needed, but lighter G-code where possible.

Details

m_resolution is now stored via apply_print_config().

_spiral_travel_to_z() uses this value to compute segment count dynamically.

Only the linear-segment fallback path is affected; G2/G3 arc-fitting remains unchanged.

src/libslic3r/GCodeWriter.hpp

@@ -168,6 +168,9 @@ public:
     //BBS: x, y offset for gcode generated
     double          m_x_offset{ 0 };
     double          m_y_offset{ 0 };
+
+    // Orca: slicing resolution in mm
+    double          m_resolution = 0.01;
     
     std::string m_gcode_label_objects_start;
     std::string m_gcode_label_objects_end;