Marlin_Firmware/Marlin/mesh_bed_leveling.h

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/**
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* Marlin 3D Printer Firmware
* Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
*
*/
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#include "Marlin.h"
#if ENABLED(MESH_BED_LEVELING)
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enum MeshLevelingState {
MeshReport,
MeshStart,
MeshNext,
MeshSet,
MeshSetZOffset,
MeshReset
};
enum MBLStatus {
MBL_STATUS_NONE = 0,
MBL_STATUS_HAS_MESH_BIT = 0,
MBL_STATUS_ACTIVE_BIT = 1
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};
#define MESH_X_DIST ((MESH_MAX_X - (MESH_MIN_X)) / (GRID_MAX_POINTS_X - 1))
#define MESH_Y_DIST ((MESH_MAX_Y - (MESH_MIN_Y)) / (GRID_MAX_POINTS_Y - 1))
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class mesh_bed_leveling {
public:
static uint8_t status; // Has Mesh and Is Active bits
static float z_offset,
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z_values[GRID_MAX_POINTS_X][GRID_MAX_POINTS_Y],
index_to_xpos[GRID_MAX_POINTS_X],
index_to_ypos[GRID_MAX_POINTS_Y];
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mesh_bed_leveling();
static void reset();
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static void set_z(const int8_t px, const int8_t py, const float &z) { z_values[px][py] = z; }
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static bool active() { return TEST(status, MBL_STATUS_ACTIVE_BIT); }
static void set_active(const bool onOff) { onOff ? SBI(status, MBL_STATUS_ACTIVE_BIT) : CBI(status, MBL_STATUS_ACTIVE_BIT); }
static bool has_mesh() { return TEST(status, MBL_STATUS_HAS_MESH_BIT); }
static void set_has_mesh(const bool onOff) { onOff ? SBI(status, MBL_STATUS_HAS_MESH_BIT) : CBI(status, MBL_STATUS_HAS_MESH_BIT); }
static inline void zigzag(const int8_t index, int8_t &px, int8_t &py) {
px = index % (GRID_MAX_POINTS_X);
py = index / (GRID_MAX_POINTS_X);
if (py & 1) px = (GRID_MAX_POINTS_X - 1) - px; // Zig zag
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}
static void set_zigzag_z(const int8_t index, const float &z) {
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int8_t px, py;
zigzag(index, px, py);
set_z(px, py, z);
}
static int8_t cell_index_x(const float &x) {
int8_t cx = (x - (MESH_MIN_X)) * (1.0 / (MESH_X_DIST));
return constrain(cx, 0, (GRID_MAX_POINTS_X) - 2);
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}
static int8_t cell_index_y(const float &y) {
int8_t cy = (y - (MESH_MIN_Y)) * (1.0 / (MESH_Y_DIST));
return constrain(cy, 0, (GRID_MAX_POINTS_Y) - 2);
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}
static int8_t probe_index_x(const float &x) {
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int8_t px = (x - (MESH_MIN_X) + 0.5 * (MESH_X_DIST)) * (1.0 / (MESH_X_DIST));
return WITHIN(px, 0, GRID_MAX_POINTS_X - 1) ? px : -1;
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}
static int8_t probe_index_y(const float &y) {
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int8_t py = (y - (MESH_MIN_Y) + 0.5 * (MESH_Y_DIST)) * (1.0 / (MESH_Y_DIST));
return WITHIN(py, 0, GRID_MAX_POINTS_Y - 1) ? py : -1;
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}
static float calc_z0(const float &a0, const float &a1, const float &z1, const float &a2, const float &z2) {
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const float delta_z = (z2 - z1) / (a2 - a1),
delta_a = a0 - a1;
return z1 + delta_a * delta_z;
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}
static float get_z(const float &x0, const float &y0
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#if ENABLED(ENABLE_LEVELING_FADE_HEIGHT)
, const float &factor
#endif
) {
const int8_t cx = cell_index_x(x0), cy = cell_index_y(y0);
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const float z1 = calc_z0(x0, index_to_xpos[cx], z_values[cx][cy], index_to_xpos[cx + 1], z_values[cx + 1][cy]),
z2 = calc_z0(x0, index_to_xpos[cx], z_values[cx][cy + 1], index_to_xpos[cx + 1], z_values[cx + 1][cy + 1]),
z0 = calc_z0(y0, index_to_ypos[cy], z1, index_to_ypos[cy + 1], z2);
return z_offset + z0
#if ENABLED(ENABLE_LEVELING_FADE_HEIGHT)
* factor
#endif
;
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}
};
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extern mesh_bed_leveling mbl;
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#endif // MESH_BED_LEVELING