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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/>.
*
*/
#pragma once
#include "../../../inc/MarlinConfig.h"
enum MeshLevelingState : char {
MeshReport, // G29 S0
MeshStart, // G29 S1
MeshNext, // G29 S2
MeshSet, // G29 S3
MeshSetZOffset, // G29 S4
MeshReset // G29 S5
};
#define MESH_X_DIST (float(MESH_MAX_X - (MESH_MIN_X)) / float(GRID_MAX_POINTS_X - 1))
#define MESH_Y_DIST (float(MESH_MAX_Y - (MESH_MIN_Y)) / float(GRID_MAX_POINTS_Y - 1))
#define _GET_MESH_X(I) mbl.index_to_xpos[I]
#define _GET_MESH_Y(J) mbl.index_to_ypos[J]
#define Z_VALUES_ARR mbl.z_values
class mesh_bed_leveling {
public:
static float z_offset,
z_values[GRID_MAX_POINTS_X][GRID_MAX_POINTS_Y],
index_to_xpos[GRID_MAX_POINTS_X],
index_to_ypos[GRID_MAX_POINTS_Y];
mesh_bed_leveling();
static void report_mesh();
static void reset();
FORCE_INLINE static bool has_mesh() {
GRID_LOOP(x, y) if (z_values[x][y]) return true;
return false;
}
static void set_z(const int8_t px, const int8_t py, const float &z) { z_values[px][py] = z; }
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
}
static void set_zigzag_z(const int8_t index, const float &z) {
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)) * RECIPROCAL(MESH_X_DIST);
return constrain(cx, 0, (GRID_MAX_POINTS_X) - 2);
}
static int8_t cell_index_y(const float &y) {
int8_t cy = (y - (MESH_MIN_Y)) * RECIPROCAL(MESH_Y_DIST);
return constrain(cy, 0, (GRID_MAX_POINTS_Y) - 2);
}
static inline xy_int8_t cell_indexes(const float &x, const float &y) {
return { cell_index_x(x), cell_index_y(y) };
}
static inline xy_int8_t cell_indexes(const xy_pos_t &xy) { return cell_indexes(xy.x, xy.y); }
static int8_t probe_index_x(const float &x) {
int8_t px = (x - (MESH_MIN_X) + 0.5f * (MESH_X_DIST)) * RECIPROCAL(MESH_X_DIST);
return WITHIN(px, 0, GRID_MAX_POINTS_X - 1) ? px : -1;
}
static int8_t probe_index_y(const float &y) {
int8_t py = (y - (MESH_MIN_Y) + 0.5f * (MESH_Y_DIST)) * RECIPROCAL(MESH_Y_DIST);
return WITHIN(py, 0, GRID_MAX_POINTS_Y - 1) ? py : -1;
}
static inline xy_int8_t probe_indexes(const float &x, const float &y) {
return { probe_index_x(x), probe_index_y(y) };
}
static inline xy_int8_t probe_indexes(const xy_pos_t &xy) { return probe_indexes(xy.x, xy.y); }
static float calc_z0(const float &a0, const float &a1, const float &z1, const float &a2, const float &z2) {
const float delta_z = (z2 - z1) / (a2 - a1),
delta_a = a0 - a1;
return z1 + delta_a * delta_z;
}
static float get_z(const xy_pos_t &pos
#if ENABLED(ENABLE_LEVELING_FADE_HEIGHT)
, const float &factor=1.0f
#endif
) {
#if DISABLED(ENABLE_LEVELING_FADE_HEIGHT)
constexpr float factor = 1.0f;
#endif
const xy_int8_t ind = cell_indexes(pos);
const float x1 = index_to_xpos[ind.x], x2 = index_to_xpos[ind.x+1],
y1 = index_to_xpos[ind.y], y2 = index_to_xpos[ind.y+1],
z1 = calc_z0(pos.x, x1, z_values[ind.x][ind.y ], x2, z_values[ind.x+1][ind.y ]),
z2 = calc_z0(pos.x, x1, z_values[ind.x][ind.y+1], x2, z_values[ind.x+1][ind.y+1]);
return z_offset + calc_z0(pos.y, y1, z1, y2, z2) * factor;
}
#if IS_CARTESIAN && DISABLED(SEGMENT_LEVELED_MOVES)
static void line_to_destination(const feedRate_t &scaled_fr_mm_s, uint8_t x_splits=0xFF, uint8_t y_splits=0xFF);
#endif
};
extern mesh_bed_leveling mbl;
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