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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#include "../../../inc/MarlinConfig.h"
#if ENABLED(MESH_BED_LEVELING)
#include "../bedlevel.h"
#include "../../../module/motion.h"
#if ENABLED(EXTENSIBLE_UI)
#include "../../../lcd/extui/ui_api.h"
#endif
mesh_bed_leveling mbl;
float mesh_bed_leveling::z_offset,
mesh_bed_leveling::z_values[GRID_MAX_POINTS_X][GRID_MAX_POINTS_Y],
mesh_bed_leveling::index_to_xpos[GRID_MAX_POINTS_X],
mesh_bed_leveling::index_to_ypos[GRID_MAX_POINTS_Y];
mesh_bed_leveling::mesh_bed_leveling() {
LOOP_L_N(i, GRID_MAX_POINTS_X)
index_to_xpos[i] = MESH_MIN_X + i * (MESH_X_DIST);
LOOP_L_N(i, GRID_MAX_POINTS_Y)
index_to_ypos[i] = MESH_MIN_Y + i * (MESH_Y_DIST);
reset();
}
void mesh_bed_leveling::reset() {
z_offset = 0;
ZERO(z_values);
#if ENABLED(EXTENSIBLE_UI)
GRID_LOOP(x, y) ExtUI::onMeshUpdate(x, y, 0);
#endif
}
#if IS_CARTESIAN && DISABLED(SEGMENT_LEVELED_MOVES)
/**
* Prepare a mesh-leveled linear move in a Cartesian setup,
* splitting the move where it crosses mesh borders.
*/
void mesh_bed_leveling::line_to_destination(const feedRate_t &scaled_fr_mm_s, uint8_t x_splits, uint8_t y_splits) {
// Get current and destination cells for this line
xy_int8_t scel = cell_indexes(current_position), ecel = cell_indexes(destination);
NOMORE(scel.x, GRID_MAX_POINTS_X - 2);
NOMORE(scel.y, GRID_MAX_POINTS_Y - 2);
NOMORE(ecel.x, GRID_MAX_POINTS_X - 2);
NOMORE(ecel.y, GRID_MAX_POINTS_Y - 2);
// Start and end in the same cell? No split needed.
if (scel == ecel) {
current_position = destination;
line_to_current_position(scaled_fr_mm_s);
return;
}
#define MBL_SEGMENT_END(A) (current_position.A + (destination.A - current_position.A) * normalized_dist)
float normalized_dist;
xyze_pos_t dest;
const int8_t gcx = _MAX(scel.x, ecel.x), gcy = _MAX(scel.y, ecel.y);
// Crosses on the X and not already split on this X?
// The x_splits flags are insurance against rounding errors.
if (ecel.x != scel.x && TEST(x_splits, gcx)) {
// Split on the X grid line
CBI(x_splits, gcx);
dest = destination;
destination.x = index_to_xpos[gcx];
normalized_dist = (destination.x - current_position.x) / (dest.x - current_position.x);
destination.y = MBL_SEGMENT_END(y);
}
// Crosses on the Y and not already split on this Y?
else if (ecel.y != scel.y && TEST(y_splits, gcy)) {
// Split on the Y grid line
CBI(y_splits, gcy);
dest = destination;
destination.y = index_to_ypos[gcy];
normalized_dist = (destination.y - current_position.y) / (dest.y - current_position.y);
destination.x = MBL_SEGMENT_END(x);
}
else {
// Must already have been split on these border(s)
// This should be a rare case.
current_position = destination;
line_to_current_position(scaled_fr_mm_s);
return;
}
destination.z = MBL_SEGMENT_END(z);
destination.e = MBL_SEGMENT_END(e);
// Do the split and look for more borders
line_to_destination(scaled_fr_mm_s, x_splits, y_splits);
// Restore destination from stack
destination = dest;
line_to_destination(scaled_fr_mm_s, x_splits, y_splits);
}
#endif // IS_CARTESIAN && !SEGMENT_LEVELED_MOVES
void mesh_bed_leveling::report_mesh() {
SERIAL_ECHOPAIR_F(STRINGIFY(GRID_MAX_POINTS_X) "x" STRINGIFY(GRID_MAX_POINTS_Y) " mesh. Z offset: ", z_offset, 5);
SERIAL_ECHOLNPGM("\nMeasured points:");
print_2d_array(GRID_MAX_POINTS_X, GRID_MAX_POINTS_Y, 5,
[](const uint8_t ix, const uint8_t iy) { return z_values[ix][iy]; }
);
}
#endif // MESH_BED_LEVELING
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