Refactor Hilbert curve. Enhance Touch UI Bed Level Screen. (#21453)

Marlin/src/feature/bedlevel/hilbert_curve.cpp

@@ -0,0 +1,112 @@
+/*********************
+ * hilbert_curve.cpp *
+ *********************/
+
+/****************************************************************************
+ *   Written By Marcio Teixeira 2021 - SynDaver Labs, Inc.                  *
+ *                                                                          *
+ *   This program is free software: you can redistribute it and/or modify   *
+ *   it under the terms of the GNU General Public License as published by   *
+ *   the Free Software Foundation, either version 3 of the License, or      *
+ *   (at your option) any later version.                                    *
+ *                                                                          *
+ *   This program is distributed in the hope that it will be useful,        *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
+ *   GNU General Public License for more details.                           *
+ *                                                                          *
+ *   To view a copy of the GNU General Public License, go to the following  *
+ *   location: <https://www.gnu.org/licenses/>.                             *
+ ****************************************************************************/
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(UBL_HILBERT_CURVE)
+
+#include "bedlevel.h"
+#include "hilbert_curve.h"
+
+constexpr int8_t  to_fix(int8_t  v) { return v * 2; }
+constexpr int8_t  to_int(int8_t  v) { return v / 2; }
+constexpr uint8_t   log2(uint8_t n) { return (n > 1) ? 1 + log2(n >> 1) : 0; }
+constexpr uint8_t  order(uint8_t n) { return uint8_t(log2(n - 1)) + 1; }
+constexpr uint8_t ord = order(_MAX(GRID_MAX_POINTS_X, GRID_MAX_POINTS_Y));
+constexpr uint8_t dim = _BV(ord);
+
+static inline bool eval_candidate(int8_t x, int8_t y, hilbert_curve::callback_ptr func, void *data) {
+  // The print bed likely has fewer points than the full Hilbert
+  // curve, so cull unecessary points
+  return x < GRID_MAX_POINTS_X && y < GRID_MAX_POINTS_Y ? func(x, y, data) : false;
+}
+
+bool hilbert_curve::hilbert(int8_t x, int8_t y, int8_t xi, int8_t xj, int8_t yi, int8_t yj, uint8_t n, hilbert_curve::callback_ptr func, void *data) {
+  /**
+   * Hilbert space-filling curve implementation
+   *
+   * x  and y  : coordinates of the bottom left corner
+   * xi and xj : i and j components of the unit x vector of the frame
+   * yi and yj : i and j components of the unit y vector of the frame
+   *
+   * From: http://www.fundza.com/algorithmic/space_filling/hilbert/basics/index.html
+   */
+  if (n)
+    return hilbert(x,           y,           yi/2,  yj/2,  xi/2,  xj/2, n-1, func, data) ||
+           hilbert(x+xi/2,      y+xj/2,      xi/2,  xj/2,  yi/2,  yj/2, n-1, func, data) ||
+           hilbert(x+xi/2+yi/2, y+xj/2+yj/2, xi/2,  xj/2,  yi/2,  yj/2, n-1, func, data) ||
+           hilbert(x+xi/2+yi,   y+xj/2+yj,  -yi/2, -yj/2, -xi/2, -xj/2, n-1, func, data);
+  else
+    return eval_candidate(to_int(x+(xi+yi)/2), to_int(y+(xj+yj)/2), func, data);
+}
+
+/**
+ * Calls func(x, y, data) for all points in the Hilbert curve.
+ * If that function returns true, the search is terminated.
+ */
+bool hilbert_curve::search(hilbert_curve::callback_ptr func, void *data) {
+  return hilbert(to_fix(0), to_fix(0),to_fix(dim), to_fix(0), to_fix(0), to_fix(dim), ord, func, data);
+}
+
+/* Helper function for starting the search at a particular point */
+
+typedef struct {
+  uint8_t x, y;
+  bool found_1st;
+  hilbert_curve::callback_ptr func;
+  void *data;
+} search_from_t;
+
+static bool search_from_helper(uint8_t x, uint8_t y, void *data) {
+  search_from_t *d = (search_from_t *) data;
+  if (d->x == x && d->y == y)
+    d->found_1st = true;
+  return d->found_1st ? d->func(x, y, d->data) : false;
+}
+
+/**
+ * Same as search, except start at a specific grid intersection point.
+ */
+bool hilbert_curve::search_from(uint8_t x, uint8_t y, hilbert_curve::callback_ptr func, void *data) {
+  search_from_t d;
+  d.x = x;
+  d.y = y;
+  d.found_1st = false;
+  d.func = func;
+  d.data = data;
+  // Call twice to allow search to wrap back to the beginning and picked up points prior to the start.
+  return search(search_from_helper, &d) || search(search_from_helper, &d);
+}
+
+/**
+ * Like search_from, but takes a bed position and starts from the nearest
+ * point on the Hilbert curve.
+ */
+bool hilbert_curve::search_from_closest(const xy_pos_t &pos, hilbert_curve::callback_ptr func, void *data) {
+  // Find closest grid intersection
+  uint8_t grid_x = LROUND(float(pos.x - MESH_MIN_X) / MESH_X_DIST);
+  uint8_t grid_y = LROUND(float(pos.y - MESH_MIN_Y) / MESH_Y_DIST);
+  LIMIT(grid_x, 0, GRID_MAX_POINTS_X);
+  LIMIT(grid_y, 0, GRID_MAX_POINTS_Y);
+  return search_from(grid_x, grid_y, func, data);
+}
+
+#endif // UBL_HILBERT_CURVE

Marlin/src/feature/bedlevel/hilbert_curve.h

@@ -0,0 +1,32 @@
+/*******************
+ * hilbert_curve.h *
+ *******************/
+
+/****************************************************************************
+ *   Written By Marcio Teixeira 2021 - SynDaver Labs, Inc.                  *
+ *                                                                          *
+ *   This program is free software: you can redistribute it and/or modify   *
+ *   it under the terms of the GNU General Public License as published by   *
+ *   the Free Software Foundation, either version 3 of the License, or      *
+ *   (at your option) any later version.                                    *
+ *                                                                          *
+ *   This program is distributed in the hope that it will be useful,        *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
+ *   GNU General Public License for more details.                           *
+ *                                                                          *
+ *   To view a copy of the GNU General Public License, go to the following  *
+ *   location: <https://www.gnu.org/licenses/>.                             *
+ ****************************************************************************/
+
+#pragma once
+
+class hilbert_curve {
+  public:
+    typedef bool (*callback_ptr)(uint8_t x, uint8_t y, void *data);
+    static bool search(callback_ptr func, void *data);
+    static bool search_from(uint8_t x, uint8_t y, callback_ptr func, void *data);
+    static bool search_from_closest(const xy_pos_t &pos, callback_ptr func, void *data);
+  private:
+    static bool hilbert(int8_t x, int8_t y, int8_t xi, int8_t xj, int8_t yi, int8_t yj, uint8_t n, callback_ptr func, void *data);
+};

Marlin/src/feature/bedlevel/ubl/ubl.h

@@ -101,11 +101,6 @@ public:
   static void display_map(const int) _O0;
   static mesh_index_pair find_closest_mesh_point_of_type(const MeshPointType, const xy_pos_t&, const bool=false, MeshFlags *done_flags=nullptr) _O0;
   static mesh_index_pair find_furthest_invalid_mesh_point() _O0;
-  #if ENABLED(UBL_HILBERT_CURVE)
-    static void check_if_missing(mesh_index_pair &pt, int x, int y);
-    static void hilbert(mesh_index_pair &pt, int8_t x, int8_t y, int8_t xi, int8_t xj, int8_t yi, int8_t yj, uint8_t n);
-    static mesh_index_pair find_next_mesh_point();
-  #endif
   static void reset();
   static void invalidate();
   static void set_all_mesh_points_to_value(const float value);

Marlin/src/feature/bedlevel/ubl/ubl_G29.cpp

@@ -49,6 +49,10 @@
   #include "../../../lcd/extui/ui_api.h"
 #endif
 
+#if ENABLED(UBL_HILBERT_CURVE)
+  #include "../hilbert_curve.h"
+#endif
+
 #include <math.h>
 
 #define UBL_G29_P31
@@ -747,11 +751,9 @@ void unified_bed_leveling::shift_mesh_height() {
         }
       #endif
 
-      best = do_furthest  ? find_furthest_invalid_mesh_point()
+      best = do_furthest
-                          : TERN(UBL_HILBERT_CURVE,
+        ? find_furthest_invalid_mesh_point()
-                              find_next_mesh_point(),
+        : find_closest_mesh_point_of_type(INVALID, nearby, true);
-                              find_closest_mesh_point_of_type(INVALID, nearby, true)
-                            );
 
       if (best.pos.x >= 0) {    // mesh point found and is reachable by probe
         TERN_(EXTENSIBLE_UI, ExtUI::onMeshUpdate(best.pos, ExtUI::PROBE_START));
@@ -1269,7 +1271,51 @@ mesh_index_pair unified_bed_leveling::find_furthest_invalid_mesh_point() {
   return farthest;
 }
 
+#if ENABLED(UBL_HILBERT_CURVE)
+
+  typedef struct {
+    MeshPointType   type;
+    MeshFlags       *done_flags;
+    bool            probe_relative;
+    mesh_index_pair closest;
+  } find_closest_t;
+
+  static bool test_func(uint8_t i, uint8_t j, void *data) {
+    find_closest_t *d = (find_closest_t*)data;
+    if ( (d->type == (isnan(ubl.z_values[i][j]) ? INVALID : REAL))
+      || (d->type == SET_IN_BITMAP && !d->done_flags->marked(i, j))
+    ) {
+      // Found a Mesh Point of the specified type!
+      const xy_pos_t mpos = { ubl.mesh_index_to_xpos(i), ubl.mesh_index_to_ypos(j) };
+
+      // If using the probe as the reference there are some unreachable locations.
+      // Also for round beds, there are grid points outside the bed the nozzle can't reach.
+      // Prune them from the list and ignore them till the next Phase (manual nozzle probing).
+
+      if (!(d->probe_relative ? probe.can_reach(mpos) : position_is_reachable(mpos)))
+        return false;
+      d->closest.pos.set(i, j);
+      return true;
+    }
+    return false;
+  }
+
+#endif
+
 mesh_index_pair unified_bed_leveling::find_closest_mesh_point_of_type(const MeshPointType type, const xy_pos_t &pos, const bool probe_relative/*=false*/, MeshFlags *done_flags/*=nullptr*/) {
+
+  #if ENABLED(UBL_HILBERT_CURVE)
+
+    find_closest_t d;
+    d.type           = type;
+    d.done_flags     = done_flags;
+    d.probe_relative = probe_relative;
+    d.closest.invalidate();
+    hilbert_curve::search_from_closest(pos, test_func, &d);
+    return d.closest;
+
+  #else
+
     mesh_index_pair closest;
     closest.invalidate();
     closest.distance = -99999.9f;
@@ -1309,58 +1355,10 @@ mesh_index_pair unified_bed_leveling::find_closest_mesh_point_of_type(const Mesh
     } // GRID_LOOP
 
     return closest;
+
+  #endif
 }
 
-#if ENABLED(UBL_HILBERT_CURVE)
-
-  constexpr int8_t  to_fix(int8_t  v) { return v << 1; }
-  constexpr int8_t  to_int(int8_t  v) { return v >> 1; }
-  constexpr uint8_t   log2(uint8_t n) { return (n > 1) ? 1 + log2(n >> 1) : 0; }
-  constexpr uint8_t  order(uint8_t n) { return uint8_t(log2(n - 1)) + 1; }
-
-  void unified_bed_leveling::hilbert(mesh_index_pair &pt, int8_t x, int8_t y, int8_t xi, int8_t xj, int8_t yi, int8_t yj, uint8_t n) {
-    /* Hilbert space filling curve implementation
-     *
-     * x and y are the coordinates of the bottom left corner
-     * xi & xj are the i & j components of the unit x vector of the frame
-     * similarly yi and yj
-     *
-     * From: http://www.fundza.com/algorithmic/space_filling/hilbert/basics/index.html
-     */
-    if (n <= 0)
-      check_if_missing(pt, to_int(x+(xi+yi)/2),to_int(y+(xj+yj)/2));
-    else {
-      hilbert(pt, x,           y,           yi/2,  yj/2,  xi/2,  xj/2, n-1);
-      hilbert(pt, x+xi/2,      y+xj/2,      xi/2,  xj/2,  yi/2,  yj/2, n-1);
-      hilbert(pt, x+xi/2+yi/2, y+xj/2+yj/2, xi/2,  xj/2,  yi/2,  yj/2, n-1);
-      hilbert(pt, x+xi/2+yi,   y+xj/2+yj,  -yi/2, -yj/2, -xi/2, -xj/2, n-1);
-    }
-  }
-
-  void unified_bed_leveling::check_if_missing(mesh_index_pair &pt, int x, int y) {
-      if (   pt.distance < 0
-          && x < GRID_MAX_POINTS_X
-          && y < GRID_MAX_POINTS_Y
-          && isnan(z_values[x][y])
-          && probe.can_reach(mesh_index_to_xpos(x), mesh_index_to_ypos(y))
-      ) {
-        pt.pos.set(x, y);
-        pt.distance = 1;
-      }
-   }
-
-   mesh_index_pair unified_bed_leveling::find_next_mesh_point() {
-     mesh_index_pair pt;
-     pt.invalidate();
-     pt.distance = -99999.9f;
-     constexpr uint8_t ord = order(_MAX(GRID_MAX_POINTS_X, GRID_MAX_POINTS_Y));
-     constexpr uint8_t dim = _BV(ord);
-     hilbert(pt, to_fix(0), to_fix(0), to_fix(dim), to_fix(0), to_fix(0), to_fix(dim), ord);
-     return pt;
-   }
-
-#endif // UBL_HILBERT_CURVE
-
 /**
  * 'Smart Fill': Scan from the outward edges of the mesh towards the center.
  * If an invalid location is found, use the next two points (if valid) to

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/extras/adjuster_widget.cpp

@@ -30,11 +30,7 @@
 #define INC_POS           SUB_POS(6,1), SUB_SIZE(2,1)
 #define DEC_POS           SUB_POS(8,1), SUB_SIZE(2,1)
 
-void draw_adjuster(CommandProcessor& cmd, int16_t x, int16_t y, int16_t w, int16_t h, uint8_t tag, float value, progmem_str units, int8_t width, uint8_t precision, draw_mode_t what) {
+void draw_adjuster_value(CommandProcessor& cmd, int16_t x, int16_t y, int16_t w, int16_t h, float value, progmem_str units, int8_t width, uint8_t precision) {
-    if (what & BACKGROUND)
-      cmd.tag(0).button(VAL_POS, F(""), FTDI::OPT_FLAT);
-
-    if (what & FOREGROUND) {
   char str[width + precision + 10 + (units ? strlen_P((const char*) units) : 0)];
   if (isnan(value))
     strcpy_P(str, PSTR("-"));
@@ -46,9 +42,16 @@ void draw_adjuster(CommandProcessor& cmd, int16_t x, int16_t y, int16_t w, int16
     strcat_P(str, (const char*) units);
   }
 
-      cmd.tag(0)
+  cmd.text(VAL_POS, str);
-         .text(VAL_POS, str)
+}
-         .tag(tag  ).button(INC_POS, F("-"))
+
+void draw_adjuster(CommandProcessor& cmd, int16_t x, int16_t y, int16_t w, int16_t h, uint8_t tag, float value, progmem_str units, int8_t width, uint8_t precision, draw_mode_t what) {
+  if (what & BACKGROUND)
+    cmd.tag(0).button(VAL_POS, F(""), FTDI::OPT_FLAT);
+
+  if (what & FOREGROUND) {
+    draw_adjuster_value(cmd, x, y, w, h, value, units, width, precision);
+    cmd.tag(tag  ).button(INC_POS, F("-"))
        .tag(tag+1).button(DEC_POS, F("+"));
   }
 }

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/extras/adjuster_widget.h

@@ -22,6 +22,13 @@
 #pragma once
 #include "../extended/screen_types.h"
 
+void draw_adjuster_value(
+  CommandProcessor& cmd,
+  int16_t x, int16_t y, int16_t w, int16_t h,
+  float value, progmem_str units = nullptr,
+  int8_t width = 5, uint8_t precision = 1
+);
+
 void draw_adjuster(
   CommandProcessor& cmd,
   int16_t x, int16_t y, int16_t w, int16_t h,

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/language/language_en.h

@@ -140,10 +140,13 @@ namespace Language_en {
 
   PROGMEM Language_Str MSG_TOUCH_CALIBRATION_START  = u8"Release to begin screen calibration";
   PROGMEM Language_Str MSG_TOUCH_CALIBRATION_PROMPT = u8"Touch the dots to calibrate";
-  PROGMEM Language_Str MSG_AUTOLEVEL_X_AXIS         = u8"Level X Axis";
   PROGMEM Language_Str MSG_BED_MAPPING_DONE         = u8"Bed mapping finished";
   PROGMEM Language_Str MSG_BED_MAPPING_INCOMPLETE   = u8"Not all points probed";
   PROGMEM Language_Str MSG_LEVELING                 = u8"Leveling";
+  PROGMEM Language_Str MSG_AXIS_LEVELING            = u8"Axis Leveling";
+  PROGMEM Language_Str MSG_PROBE_BED                = u8"Probe Mesh";
+  PROGMEM Language_Str MSG_SHOW_MESH                = u8"View Mesh";
+  PROGMEM Language_Str MSG_PRINT_TEST               = u8"Print Test";
 
   #if ENABLED(TOUCH_UI_LULZBOT_BIO)
     PROGMEM Language_Str MSG_MOVE_TO_HOME           = u8"Move to Home";

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/bed_mesh_screen.cpp

@@ -225,6 +225,7 @@ bool BedMeshScreen::tagToPoint(uint8_t tag, xy_uint8_t &pt) {
 }
 
 void BedMeshScreen::onEntry() {
+  mydata.allowEditing = true;
   mydata.highlightedTag = 0;
   mydata.zAdjustment = 0;
   mydata.count = GRID_MAX_POINTS;
@@ -259,16 +260,16 @@ void BedMeshScreen::adjustHighlightedValue(float increment) {
 }
 
 void BedMeshScreen::saveAdjustedHighlightedValue() {
-  if(mydata.zAdjustment) {
+  if (mydata.zAdjustment) {
     BedMeshScreen::setHighlightedValue(BedMeshScreen::getHighlightedValue(true) + mydata.zAdjustment);
     mydata.zAdjustment = 0;
   }
 }
 
 void BedMeshScreen::changeHighlightedValue(uint8_t tag) {
-  saveAdjustedHighlightedValue();
+  if (mydata.allowEditing) saveAdjustedHighlightedValue();
   mydata.highlightedTag = tag;
-  moveToHighlightedValue();
+  if (mydata.allowEditing) moveToHighlightedValue();
 }
 
 void BedMeshScreen::drawHighlightedPointValue() {
@@ -277,7 +278,12 @@ void BedMeshScreen::drawHighlightedPointValue() {
      .colors(normal_btn)
      .text(Z_LABEL_POS, GET_TEXT_F(MSG_MESH_EDIT_Z))
      .font(font_small);
+
+  if (mydata.allowEditing)
     draw_adjuster(cmd, Z_VALUE_POS, 2, getHighlightedValue(true) + mydata.zAdjustment, GET_TEXT_F(MSG_UNITS_MM), 4, 3);
+  else
+    draw_adjuster_value(cmd, Z_VALUE_POS, getHighlightedValue(true) + mydata.zAdjustment, GET_TEXT_F(MSG_UNITS_MM), 4, 3);
+
   cmd.colors(action_btn)
      .tag(1).button(OKAY_POS, GET_TEXT_F(MSG_BUTTON_OKAY))
      .tag(0);
@@ -347,6 +353,7 @@ void BedMeshScreen::onMeshUpdate(const int8_t, const int8_t, const float) {
 void BedMeshScreen::onMeshUpdate(const int8_t x, const int8_t y, const ExtUI::probe_state_t state) {
   switch (state) {
     case ExtUI::MESH_START:
+      mydata.allowEditing = false;
       mydata.count = 0;
       mydata.message = mydata.MSG_NONE;
       break;
@@ -369,10 +376,16 @@ void BedMeshScreen::onMeshUpdate(const int8_t x, const int8_t y, const ExtUI::pr
 
 void BedMeshScreen::startMeshProbe() {
   GOTO_SCREEN(BedMeshScreen);
+  mydata.allowEditing = false;
   mydata.count = 0;
   injectCommands_P(PSTR(BED_LEVELING_COMMANDS));
 }
 
+void BedMeshScreen::showMesh() {
+  GOTO_SCREEN(BedMeshScreen);
+  mydata.allowEditing = false;
+}
+
 void BedMeshScreen::showMeshEditor() {
   SpinnerDialogBox::enqueueAndWait_P(ExtUI::isMachineHomed() ? F("M420 S1") : F("G28\nM420 S1"));
   // After the spinner, go to this screen.

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/bed_mesh_screen.h

@@ -33,6 +33,7 @@ struct BedMeshScreenData {
   uint8_t count;
   uint8_t highlightedTag;
   float zAdjustment;
+  bool allowEditing;
 };
 
 class BedMeshScreen : public BaseScreen, public CachedScreen<BED_MESH_SCREEN_CACHE> {
@@ -63,5 +64,6 @@ class BedMeshScreen : public BaseScreen, public CachedScreen<BED_MESH_SCREEN_CAC
     static bool onTouchEnd(uint8_t tag);
 
     static void startMeshProbe();
+    static void showMesh();
     static void showMeshEditor();
 };

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/leveling_menu.cpp

@@ -34,27 +34,33 @@ using namespace ExtUI;
 using namespace Theme;
 
 #if ENABLED(TOUCH_UI_PORTRAIT)
-  #define GRID_ROWS 9
+  #define GRID_ROWS 8
   #define GRID_COLS 2
-  #define TITLE_POS          BTN_POS(1,1), BTN_SIZE(2,1)
+  #define LEVELING_TITLE_POS BTN_POS(1,1), BTN_SIZE(2,1)
   #define LEVEL_AXIS_POS     BTN_POS(1,2), BTN_SIZE(2,1)
-  #define LEVEL_BED_POS      BTN_POS(1,3), BTN_SIZE(2,1)
+  #define BED_MESH_TITLE_POS BTN_POS(1,3), BTN_SIZE(2,1)
-  #define EDIT_MESH_POS      BTN_POS(1,4), BTN_SIZE(2,1)
+  #define PROBE_BED_POS      BTN_POS(1,4), BTN_SIZE(1,1)
+  #define TEST_MESH_POS      BTN_POS(2,4), BTN_SIZE(1,1)
+  #define SHOW_MESH_POS      BTN_POS(1,5), BTN_SIZE(1,1)
+  #define EDIT_MESH_POS      BTN_POS(2,5), BTN_SIZE(1,1)
   #define BLTOUCH_TITLE_POS  BTN_POS(1,6), BTN_SIZE(2,1)
   #define BLTOUCH_RESET_POS  BTN_POS(1,7), BTN_SIZE(1,1)
   #define BLTOUCH_TEST_POS   BTN_POS(2,7), BTN_SIZE(1,1)
-  #define BACK_POS           BTN_POS(1,9), BTN_SIZE(2,1)
+  #define BACK_POS           BTN_POS(1,8), BTN_SIZE(2,1)
 #else
-  #define GRID_ROWS 7
+  #define GRID_ROWS 6
-  #define GRID_COLS 2
+  #define GRID_COLS 3
-  #define TITLE_POS          BTN_POS(1,1), BTN_SIZE(2,1)
+  #define LEVELING_TITLE_POS BTN_POS(1,1), BTN_SIZE(3,1)
-  #define LEVEL_AXIS_POS     BTN_POS(1,2), BTN_SIZE(2,1)
+  #define LEVEL_AXIS_POS     BTN_POS(1,2), BTN_SIZE(3,1)
-  #define LEVEL_BED_POS      BTN_POS(1,3), BTN_SIZE(2,1)
+  #define BED_MESH_TITLE_POS BTN_POS(1,3), BTN_SIZE(2,1)
-  #define EDIT_MESH_POS      BTN_POS(1,4), BTN_SIZE(2,1)
+  #define PROBE_BED_POS      BTN_POS(1,4), BTN_SIZE(1,1)
-  #define BLTOUCH_TITLE_POS  BTN_POS(1,5), BTN_SIZE(2,1)
+  #define TEST_MESH_POS      BTN_POS(2,4), BTN_SIZE(1,1)
-  #define BLTOUCH_RESET_POS  BTN_POS(1,6), BTN_SIZE(1,1)
+  #define SHOW_MESH_POS      BTN_POS(1,5), BTN_SIZE(1,1)
-  #define BLTOUCH_TEST_POS   BTN_POS(2,6), BTN_SIZE(1,1)
+  #define EDIT_MESH_POS      BTN_POS(2,5), BTN_SIZE(1,1)
-  #define BACK_POS           BTN_POS(1,7), BTN_SIZE(2,1)
+  #define BLTOUCH_TITLE_POS  BTN_POS(3,3), BTN_SIZE(1,1)
+  #define BLTOUCH_RESET_POS  BTN_POS(3,4), BTN_SIZE(1,1)
+  #define BLTOUCH_TEST_POS   BTN_POS(3,5), BTN_SIZE(1,1)
+  #define BACK_POS           BTN_POS(1,6), BTN_SIZE(3,1)
 #endif
 
 void LevelingMenu::onRedraw(draw_mode_t what) {
@@ -69,20 +75,25 @@ void LevelingMenu::onRedraw(draw_mode_t what) {
     CommandProcessor cmd;
     cmd.font(font_large)
        .cmd(COLOR_RGB(bg_text_enabled))
-       .text(TITLE_POS, GET_TEXT_F(MSG_LEVELING))
+       .text(LEVELING_TITLE_POS, GET_TEXT_F(MSG_AXIS_LEVELING))
+       .text(BED_MESH_TITLE_POS, GET_TEXT_F(MSG_BED_LEVELING))
     #if ENABLED(BLTOUCH)
        .text(BLTOUCH_TITLE_POS, GET_TEXT_F(MSG_BLTOUCH))
     #endif
        .font(font_medium).colors(normal_btn)
     #if EITHER(Z_STEPPER_AUTO_ALIGN,MECHANICAL_GANTRY_CALIBRATION)
-       .tag(2).button(LEVEL_AXIS_POS, GET_TEXT_F(MSG_AUTOLEVEL_X_AXIS))
+       .tag(2).button(LEVEL_AXIS_POS, GET_TEXT_F(MSG_LEVEL_X_AXIS))
     #endif
-       .tag(3).button(LEVEL_BED_POS, GET_TEXT_F(MSG_LEVEL_BED))
+       .tag(3).button(PROBE_BED_POS, GET_TEXT_F(MSG_PROBE_BED))
        .enabled(ENABLED(HAS_MESH))
-       .tag(4).button(EDIT_MESH_POS, GET_TEXT_F(MSG_EDIT_MESH))
+       .tag(4).button(SHOW_MESH_POS, GET_TEXT_F(MSG_SHOW_MESH))
+       .enabled(ENABLED(HAS_MESH))
+       .tag(5).button(EDIT_MESH_POS, GET_TEXT_F(MSG_EDIT_MESH))
+       .enabled(ENABLED(G26_MESH_VALIDATION))
+       .tag(6).button(TEST_MESH_POS, GET_TEXT_F(MSG_PRINT_TEST))
     #if ENABLED(BLTOUCH)
-       .tag(5).button(BLTOUCH_RESET_POS, GET_TEXT_F(MSG_BLTOUCH_RESET))
+       .tag(7).button(BLTOUCH_RESET_POS, GET_TEXT_F(MSG_BLTOUCH_RESET))
-       .tag(6).button(BLTOUCH_TEST_POS,  GET_TEXT_F(MSG_BLTOUCH_SELFTEST))
+       .tag(8).button(BLTOUCH_TEST_POS,  GET_TEXT_F(MSG_BLTOUCH_SELFTEST))
     #endif
        .colors(action_btn)
        .tag(1).button(BACK_POS, GET_TEXT_F(MSG_BACK));
@@ -106,11 +117,18 @@ bool LevelingMenu::onTouchEnd(uint8_t tag) {
     #endif
     break;
     #if ENABLED(AUTO_BED_LEVELING_UBL)
-    case 4: BedMeshScreen::showMeshEditor(); break;
+    case 4: BedMeshScreen::showMesh(); break;
+    case 5: BedMeshScreen::showMeshEditor(); break;
+    #endif
+    #if ENABLED(G26_MESH_VALIDATION)
+    case 6:
+      GOTO_SCREEN(StatusScreen);
+      injectCommands_P(PSTR("M117 Printing Test Pattern\nG28 O\nG26 R"));
+      break;
     #endif
     #if ENABLED(BLTOUCH)
-    case 5: injectCommands_P(PSTR("M280 P0 S60")); break;
+    case 7: injectCommands_P(PSTR("M280 P0 S60")); break;
-    case 6: SpinnerDialogBox::enqueueAndWait_P(F("M280 P0 S90\nG4 P100\nM280 P0 S120")); break;
+    case 8: SpinnerDialogBox::enqueueAndWait_P(F("M280 P0 S90\nG4 P100\nM280 P0 S120")); break;
     #endif
     default: return false;
   }
@@ -118,3 +136,4 @@ bool LevelingMenu::onTouchEnd(uint8_t tag) {
 }
 
 #endif // FTDI_LEVELING_MENU
+

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/tune_menu.cpp

@@ -62,7 +62,7 @@ void TuneMenu::onRedraw(draw_mode_t what) {
     #define FILAMENT_POS    BTN_POS(1,4), BTN_SIZE(1,1)
     #define CASE_LIGHT_POS  BTN_POS(2,4), BTN_SIZE(1,1)
     #define ADVANCED_SETTINGS_POS BTN_POS(1,5), BTN_SIZE(1,1)
-    #define BACK_POS        BTN_POS(2,5), BTN_SIZE(2,1)
+    #define BACK_POS        BTN_POS(2,5), BTN_SIZE(1,1)
   #endif
 
   if (what & FOREGROUND) {

Marlin/src/lcd/extui/ui_api.cpp

@@ -849,10 +849,13 @@ namespace ExtUI {
   }
 
   #if HAS_LEVELING
+
     bool getLevelingActive() { return planner.leveling_active; }
     void setLevelingActive(const bool state) { set_bed_leveling_enabled(state); }
     bool getMeshValid() { return leveling_is_valid(); }
+
     #if HAS_MESH
+
       bed_mesh_t& getMeshArray() { return Z_VALUES_ARR; }
       float getMeshPoint(const xy_uint8_t &pos) { return Z_VALUES(pos.x, pos.y); }
       void setMeshPoint(const xy_uint8_t &pos, const float &zoff) {
@@ -861,17 +864,23 @@ namespace ExtUI {
           TERN_(ABL_BILINEAR_SUBDIVISION, bed_level_virt_interpolate());
         }
       }
+
       void moveToMeshPoint(const xy_uint8_t &pos, const float &z) {
         #if EITHER(MESH_BED_LEVELING, AUTO_BED_LEVELING_UBL)
           const feedRate_t old_feedrate = feedrate_mm_s;
+          const float x_target = MESH_MIN_X + pos.x * (MESH_X_DIST),
+                      y_target = MESH_MIN_Y + pos.y * (MESH_Y_DIST);
+          if (x_target != current_position[X_AXIS] || y_target != current_position[Y_AXIS]) {
+            // If moving across bed, raise nozzle to safe height over bed
             feedrate_mm_s = Z_PROBE_FEEDRATE_FAST;
             destination = current_position;
             destination[Z_AXIS] = Z_CLEARANCE_BETWEEN_PROBES;
             prepare_line_to_destination();
             feedrate_mm_s = XY_PROBE_FEEDRATE;
-          destination[X_AXIS] = MESH_MIN_X + pos.x * MESH_X_DIST;
+            destination[X_AXIS] = x_target;
-          destination[Y_AXIS] = MESH_MIN_Y + pos.y * MESH_Y_DIST;
+            destination[Y_AXIS] = y_target;
             prepare_line_to_destination();
+          }
           feedrate_mm_s = Z_PROBE_FEEDRATE_FAST;
           destination[Z_AXIS] = z;
           prepare_line_to_destination();
@@ -881,8 +890,10 @@ namespace ExtUI {
           UNUSED(z);
         #endif
       }
-    #endif
+
-  #endif
+    #endif // HAS_MESH
+
+  #endif // HAS_LEVELING
 
   #if ENABLED(HOST_PROMPT_SUPPORT)
     void setHostResponse(const uint8_t response) { host_response_handler(response); }

platformio.ini

@@ -75,6 +75,7 @@ default_src_filter = +<src/*> -<src/config> -<src/HAL> +<src/HAL/shared>
   -<src/feature/bedlevel/abl> -<src/gcode/bedlevel/abl>
   -<src/feature/bedlevel/mbl> -<src/gcode/bedlevel/mbl>
   -<src/feature/bedlevel/ubl> -<src/gcode/bedlevel/ubl>
+  -<src/feature/bedlevel/hilbert_curve.cpp>
   -<src/feature/binary_stream.cpp> -<src/libs/heatshrink>
   -<src/feature/bltouch.cpp>
   -<src/feature/cancel_object.cpp> -<src/gcode/feature/cancel>
@@ -306,6 +307,7 @@ AUTO_BED_LEVELING_BILINEAR = src_filter=+<src/feature/bedlevel/abl>
 AUTO_BED_LEVELING_(3POINT|(BI)?LINEAR) = src_filter=+<src/gcode/bedlevel/abl>
 MESH_BED_LEVELING       = src_filter=+<src/feature/bedlevel/mbl> +<src/gcode/bedlevel/mbl>
 AUTO_BED_LEVELING_UBL   = src_filter=+<src/feature/bedlevel/ubl> +<src/gcode/bedlevel/ubl>
+UBL_HILBERT_CURVE       = src_filter=+<src/feature/bedlevel/hilbert_curve.cpp>
 BACKLASH_COMPENSATION   = src_filter=+<src/feature/backlash.cpp>
 BARICUDA                = src_filter=+<src/feature/baricuda.cpp> +<src/gcode/feature/baricuda>
 BINARY_FILE_TRANSFER    = src_filter=+<src/feature/binary_stream.cpp> +<src/libs/heatshrink>