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121 lines
3.8 KiB
C++
121 lines
3.8 KiB
C++
/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef _MESH_BED_LEVELING_H_
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#define _MESH_BED_LEVELING_H_
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#include "MarlinConfig.h"
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enum MeshLevelingState : char {
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MeshReport,
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MeshStart,
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MeshNext,
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MeshSet,
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MeshSetZOffset,
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MeshReset
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};
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#define MESH_X_DIST ((MESH_MAX_X - (MESH_MIN_X)) / (GRID_MAX_POINTS_X - 1))
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#define MESH_Y_DIST ((MESH_MAX_Y - (MESH_MIN_Y)) / (GRID_MAX_POINTS_Y - 1))
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class mesh_bed_leveling {
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public:
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static float z_offset,
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z_values[GRID_MAX_POINTS_X][GRID_MAX_POINTS_Y],
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index_to_xpos[GRID_MAX_POINTS_X],
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index_to_ypos[GRID_MAX_POINTS_Y];
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mesh_bed_leveling();
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static void report_mesh();
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static void reset();
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FORCE_INLINE static bool has_mesh() {
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for (uint8_t x = 0; x < GRID_MAX_POINTS_X; x++)
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for (uint8_t y = 0; y < GRID_MAX_POINTS_Y; y++)
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if (z_values[x][y]) return true;
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return false;
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}
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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 inline void zigzag(const int8_t index, int8_t &px, int8_t &py) {
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px = index % (GRID_MAX_POINTS_X);
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py = index / (GRID_MAX_POINTS_X);
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if (py & 1) px = (GRID_MAX_POINTS_X - 1) - px; // Zig zag
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}
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static void set_zigzag_z(const int8_t index, const float &z) {
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int8_t px, py;
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zigzag(index, px, py);
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set_z(px, py, z);
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}
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static int8_t cell_index_x(const float &x) {
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int8_t cx = (x - (MESH_MIN_X)) * (1.0 / (MESH_X_DIST));
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return constrain(cx, 0, (GRID_MAX_POINTS_X) - 2);
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}
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static int8_t cell_index_y(const float &y) {
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int8_t cy = (y - (MESH_MIN_Y)) * (1.0 / (MESH_Y_DIST));
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return constrain(cy, 0, (GRID_MAX_POINTS_Y) - 2);
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}
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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));
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return WITHIN(px, 0, GRID_MAX_POINTS_X - 1) ? px : -1;
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}
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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));
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return WITHIN(py, 0, GRID_MAX_POINTS_Y - 1) ? py : -1;
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}
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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),
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delta_a = a0 - a1;
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return z1 + delta_a * delta_z;
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}
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static float get_z(const float &x0, const float &y0
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#if ENABLED(ENABLE_LEVELING_FADE_HEIGHT)
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, const float &factor
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#endif
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) {
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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]),
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z2 = calc_z0(x0, index_to_xpos[cx], z_values[cx][cy + 1], index_to_xpos[cx + 1], z_values[cx + 1][cy + 1]),
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z0 = calc_z0(y0, index_to_ypos[cy], z1, index_to_ypos[cy + 1], z2);
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return z_offset + z0
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#if ENABLED(ENABLE_LEVELING_FADE_HEIGHT)
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* factor
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#endif
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;
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}
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};
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extern mesh_bed_leveling mbl;
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#endif // _MESH_BED_LEVELING_H_
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