Drop Planner::position_float, use int types

Marlin/src/module/planner.cpp

 
 // private:
 
-long Planner::position[NUM_AXIS] = { 0 };
+int32_t Planner::position[NUM_AXIS] = { 0 };
 
 uint32_t Planner::cutoff_long;
 
 
 #if ENABLED(LIN_ADVANCE)
   float Planner::extruder_advance_k, // Initialized by settings.load()
-        Planner::advance_ed_ratio,   // Initialized by settings.load()
-        Planner::position_float[NUM_AXIS] = { 0 };
+        Planner::advance_ed_ratio;   // Initialized by settings.load()
 #endif
 
 #if ENABLED(ULTRA_LCD)
 void Planner::init() {
   block_buffer_head = block_buffer_tail = 0;
   ZERO(position);
-  #if ENABLED(LIN_ADVANCE)
-    ZERO(position_float);
-  #endif
   ZERO(previous_speed);
   previous_nominal_speed = 0.0;
   #if ABL_PLANAR
     }
   #endif
 
-  #if ENABLED(LIN_ADVANCE)
-    const float mm_D_float = SQRT(sq(a - position_float[X_AXIS]) + sq(b - position_float[Y_AXIS]));
-  #endif
-
-  const long da = target[X_AXIS] - position[X_AXIS],
-             db = target[Y_AXIS] - position[Y_AXIS],
-             dc = target[Z_AXIS] - position[Z_AXIS];
+  const int32_t da = target[X_AXIS] - position[X_AXIS],
+                db = target[Y_AXIS] - position[Y_AXIS],
+                dc = target[Z_AXIS] - position[Z_AXIS];
 
   /*
   SERIAL_ECHOPAIR("  Planner FR:", fr_mm_s);
   SERIAL_EOL();
   //*/
 
-  // DRYRUN ignores all temperature constraints and assures that the extruder is instantly satisfied
-  if (DEBUGGING(DRYRUN)) {
-    position[E_AXIS] = target[E_AXIS];
-    #if ENABLED(LIN_ADVANCE)
-      position_float[E_AXIS] = e;
-    #endif
-  }
-
-  long de = target[E_AXIS] - position[E_AXIS];
-
-  #if ENABLED(LIN_ADVANCE)
-    float de_float = e - position_float[E_AXIS]; // Should this include e_factor?
-  #endif
+  int32_t de = target[E_AXIS] - position[E_AXIS];
 
   #if ENABLED(PREVENT_COLD_EXTRUSION) || ENABLED(PREVENT_LENGTHY_EXTRUDE)
     if (de) {
         if (thermalManager.tooColdToExtrude(extruder)) {
           position[E_AXIS] = target[E_AXIS]; // Behave as if the move really took place, but ignore E part
           de = 0; // no difference
-          #if ENABLED(LIN_ADVANCE)
-            position_float[E_AXIS] = e;
-            de_float = 0;
-          #endif
           SERIAL_ECHO_START();
           SERIAL_ECHOLNPGM(MSG_ERR_COLD_EXTRUDE_STOP);
         }
         if (labs(de * e_factor[extruder]) > (int32_t)axis_steps_per_mm[E_AXIS_N] * (EXTRUDE_MAXLENGTH)) { // It's not important to get max. extrusion length in a precision < 1mm, so save some cycles and cast to int
           position[E_AXIS] = target[E_AXIS]; // Behave as if the move really took place, but ignore E part
           de = 0; // no difference
-          #if ENABLED(LIN_ADVANCE)
-            position_float[E_AXIS] = e;
-            de_float = 0;
-          #endif
           SERIAL_ECHO_START();
           SERIAL_ECHOLNPGM(MSG_ERR_LONG_EXTRUDE_STOP);
         }
       #endif
     );
   }
-  const float inverse_millimeters = 1.0 / block->millimeters;  // Inverse millimeters to remove multiple divides
+  float inverse_millimeters = 1.0 / block->millimeters;  // Inverse millimeters to remove multiple divides
 
   // Calculate moves/second for this move. No divide by zero due to previous checks.
   float inverse_mm_s = fr_mm_s * inverse_millimeters;
   previous_safe_speed = safe_speed;
 
   #if ENABLED(LIN_ADVANCE)
-
-    //
-    // Use LIN_ADVANCE for blocks if all these are true:
-    //
-    // esteps                                          : We have E steps todo (a printing move)
-    //
-    // block->steps[X_AXIS] || block->steps[Y_AXIS]    : We have a movement in XY direction (i.e., not retract / prime).
-    //
-    // extruder_advance_k                              : There is an advance factor set.
-    //
-    // block->steps[E_AXIS] != block->step_event_count : A problem occurs if the move before a retract is too small.
-    //                                                   In that case, the retract and move will be executed together.
-    //                                                   This leads to too many advance steps due to a huge e_acceleration.
-    //                                                   The math is good, but we must avoid retract moves with advance!
-    // de_float > 0.0                                  : Extruder is running forward (e.g., for "Wipe while retracting" (Slic3r) or "Combing" (Cura) moves)
-    //
-    block->use_advance_lead =  esteps
-                            && (block->steps[X_AXIS] || block->steps[Y_AXIS])
+    /**
+     *
+     * Use LIN_ADVANCE for blocks if all these are true:
+     *
+     * esteps && (block->steps[X_AXIS] || block->steps[Y_AXIS]) : This is a print move
+     *
+     * extruder_advance_k                 : There is an advance factor set.
+     *
+     * esteps != block->step_event_count  : A problem occurs if the move before a retract is too small.
+     *                                      In that case, the retract and move will be executed together.
+     *                                      This leads to too many advance steps due to a huge e_acceleration.
+     *                                      The math is good, but we must avoid retract moves with advance!
+     * de > 0                             : Extruder is running forward (e.g., for "Wipe while retracting" (Slic3r) or "Combing" (Cura) moves)
+     */
+    block->use_advance_lead =  esteps && (block->steps[X_AXIS] || block->steps[Y_AXIS])
                             && extruder_advance_k
                             && (uint32_t)esteps != block->step_event_count
-                            && de_float > 0.0;
+                            && de > 0;
     if (block->use_advance_lead)
       block->abs_adv_steps_multiplier8 = LROUND(
         extruder_advance_k
-        * (UNEAR_ZERO(advance_ed_ratio) ? de_float / mm_D_float : advance_ed_ratio) // Use the fixed ratio, if set
+        * (UNEAR_ZERO(advance_ed_ratio) ? de * steps_to_mm[E_AXIS_N] / HYPOT(da * steps_to_mm[X_AXIS], db * steps_to_mm[Y_AXIS]) : advance_ed_ratio) // Use the fixed ratio, if set
         * (block->nominal_speed / (float)block->nominal_rate)
         * axis_steps_per_mm[E_AXIS_N] * 256.0
       );
 
   // Update the position (only when a move was queued)
   COPY(position, target);
-  #if ENABLED(LIN_ADVANCE)
-    position_float[X_AXIS] = a;
-    position_float[Y_AXIS] = b;
-    position_float[Z_AXIS] = c;
-    position_float[E_AXIS] = e;
-  #endif
 
   recalculate();
 
   #else
     #define _EINDEX E_AXIS
   #endif
-  const long na = position[X_AXIS] = LROUND(a * axis_steps_per_mm[X_AXIS]),
-             nb = position[Y_AXIS] = LROUND(b * axis_steps_per_mm[Y_AXIS]),
-             nc = position[Z_AXIS] = LROUND(c * axis_steps_per_mm[Z_AXIS]),
-             ne = position[E_AXIS] = LROUND(e * axis_steps_per_mm[_EINDEX]);
-  #if ENABLED(LIN_ADVANCE)
-    position_float[X_AXIS] = a;
-    position_float[Y_AXIS] = b;
-    position_float[Z_AXIS] = c;
-    position_float[E_AXIS] = e;
-  #endif
+  const int32_t na = position[X_AXIS] = LROUND(a * axis_steps_per_mm[X_AXIS]),
+                nb = position[Y_AXIS] = LROUND(b * axis_steps_per_mm[Y_AXIS]),
+                nc = position[Z_AXIS] = LROUND(c * axis_steps_per_mm[Z_AXIS]),
+                ne = position[E_AXIS] = LROUND(e * axis_steps_per_mm[_EINDEX]);
   stepper.set_position(na, nb, nc, ne);
   previous_nominal_speed = 0.0; // Resets planner junction speeds. Assumes start from rest.
   ZERO(previous_speed);
  * Sync from the stepper positions. (e.g., after an interrupted move)
  */
 void Planner::sync_from_steppers() {
-  LOOP_XYZE(i) {
+  LOOP_XYZE(i)
     position[i] = stepper.position((AxisEnum)i);
-    #if ENABLED(LIN_ADVANCE)
-      position_float[i] = position[i] * steps_to_mm[i
-        #if ENABLED(DISTINCT_E_FACTORS)
-          + (i == E_AXIS ? active_extruder : 0)
-        #endif
-      ];
-    #endif
-  }
 }
 
 /**
     const uint8_t axis_index = axis;
   #endif
   position[axis] = LROUND(v * axis_steps_per_mm[axis_index]);
-  #if ENABLED(LIN_ADVANCE)
-    position_float[axis] = v;
-  #endif
   stepper.set_position(axis, v);
   previous_speed[axis] = 0.0;
 }

Marlin/src/module/planner.h

      * The current position of the tool in absolute steps
      * Recalculated if any axis_steps_per_mm are changed by gcode
      */
-    static long position[NUM_AXIS];
+    static int32_t position[NUM_AXIS];
 
     /**
      * Speed of previous path line segment
       // Old direction bits. Used for speed calculations
       static unsigned char old_direction_bits;
       // Segment times (in µs). Used for speed calculations
-      static long axis_segment_time_us[2][3];
-    #endif
-
-    #if ENABLED(LIN_ADVANCE)
-      static float position_float[NUM_AXIS];
+      static uint32_t axis_segment_time_us[2][3];
     #endif
 
     #if ENABLED(ULTRA_LCD)