/** * Marlin 3D Printer Firmware * Copyright (c) 2019 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 . * */ /** * Marlin Firmware -- G26 - Mesh Validation Tool */ #include "../../inc/MarlinConfig.h" #if ENABLED(G26_MESH_VALIDATION) #define G26_OK false #define G26_ERR true #include "../../gcode/gcode.h" #include "../../feature/bedlevel/bedlevel.h" #include "../../Marlin.h" #include "../../module/planner.h" #include "../../module/stepper.h" #include "../../module/motion.h" #include "../../module/tool_change.h" #include "../../module/temperature.h" #include "../../lcd/ultralcd.h" #define EXTRUSION_MULTIPLIER 1.0 #define RETRACTION_MULTIPLIER 1.0 #define PRIME_LENGTH 10.0 #define OOZE_AMOUNT 0.3 #define INTERSECTION_CIRCLE_RADIUS 5 #define CROSSHAIRS_SIZE 3 #ifndef G26_XY_FEEDRATE #define G26_XY_FEEDRATE (PLANNER_XY_FEEDRATE() / 3.0) #endif #if CROSSHAIRS_SIZE >= INTERSECTION_CIRCLE_RADIUS #error "CROSSHAIRS_SIZE must be less than INTERSECTION_CIRCLE_RADIUS." #endif #define G26_OK false #define G26_ERR true #if ENABLED(ARC_SUPPORT) void plan_arc(const float (&cart)[XYZE], const float (&offset)[2], const uint8_t clockwise); #endif /** * G26 Mesh Validation Tool * * G26 is a Mesh Validation Tool intended to provide support for the Marlin Unified Bed Leveling System. * In order to fully utilize and benefit from the Marlin Unified Bed Leveling System an accurate Mesh must * be defined. G29 is designed to allow the user to quickly validate the correctness of her Mesh. It will * first heat the bed and nozzle. It will then print lines and circles along the Mesh Cell boundaries and * the intersections of those lines (respectively). * * This action allows the user to immediately see where the Mesh is properly defined and where it needs to * be edited. The command will generate the Mesh lines closest to the nozzle's starting position. Alternatively * the user can specify the X and Y position of interest with command parameters. This allows the user to * focus on a particular area of the Mesh where attention is needed. * * B # Bed Set the Bed Temperature. If not specified, a default of 60 C. will be assumed. * * C Current When searching for Mesh Intersection points to draw, use the current nozzle location * as the base for any distance comparison. * * D Disable Disable the Unified Bed Leveling System. In the normal case the user is invoking this * command to see how well a Mesh as been adjusted to match a print surface. In order to do * this the Unified Bed Leveling System is turned on by the G26 command. The D parameter * alters the command's normal behavior and disables the Unified Bed Leveling System even if * it is on. * * H # Hotend Set the Nozzle Temperature. If not specified, a default of 205 C. will be assumed. * * F # Filament Used to specify the diameter of the filament being used. If not specified * 1.75mm filament is assumed. If you are not getting acceptable results by using the * 'correct' numbers, you can scale this number up or down a little bit to change the amount * of filament that is being extruded during the printing of the various lines on the bed. * * K Keep-On Keep the heaters turned on at the end of the command. * * L # Layer Layer height. (Height of nozzle above bed) If not specified .20mm will be used. * * O # Ooooze How much your nozzle will Ooooze filament while getting in position to print. This * is over kill, but using this parameter will let you get the very first 'circle' perfect * so you have a trophy to peel off of the bed and hang up to show how perfectly you have your * Mesh calibrated. If not specified, a filament length of .3mm is assumed. * * P # Prime Prime the nozzle with specified length of filament. If this parameter is not * given, no prime action will take place. If the parameter specifies an amount, that much * will be purged before continuing. If no amount is specified the command will start * purging filament until the user provides an LCD Click and then it will continue with * printing the Mesh. You can carefully remove the spent filament with a needle nose * pliers while holding the LCD Click wheel in a depressed state. If you do not have * an LCD, you must specify a value if you use P. * * Q # Multiplier Retraction Multiplier. Normally not needed. Retraction defaults to 1.0mm and * un-retraction is at 1.2mm These numbers will be scaled by the specified amount * * R # Repeat Prints the number of patterns given as a parameter, starting at the current location. * If a parameter isn't given, every point will be printed unless G26 is interrupted. * This works the same way that the UBL G29 P4 R parameter works. * * NOTE: If you do not have an LCD, you -must- specify R. This is to ensure that you are * aware that there's some risk associated with printing without the ability to abort in * cases where mesh point Z value may be inaccurate. As above, if you do not include a * parameter, every point will be printed. * * S # Nozzle Used to control the size of nozzle diameter. If not specified, a .4mm nozzle is assumed. * * U # Random Randomize the order that the circles are drawn on the bed. The search for the closest * un-drawn circle is still done. But the distance to the location for each circle has a * random number of the specified size added to it. Specifying S50 will give an interesting * deviation from the normal behavior on a 10 x 10 Mesh. * * X # X Coord. Specify the starting location of the drawing activity. * * Y # Y Coord. Specify the starting location of the drawing activity. */ // External references // Private functions static uint16_t circle_flags[16], horizontal_mesh_line_flags[16], vertical_mesh_line_flags[16]; float g26_e_axis_feedrate = 0.025, random_deviation = 0.0; static bool g26_retracted = false; // Track the retracted state of the nozzle so mismatched // retracts/recovers won't result in a bad state. float g26_extrusion_multiplier, g26_retraction_multiplier, g26_layer_height, g26_prime_length; float g26_x_pos = 0, g26_y_pos = 0; int16_t g26_bed_temp, g26_hotend_temp; int8_t g26_prime_flag; #if HAS_LCD_MENU /** * If the LCD is clicked, cancel, wait for release, return true */ bool user_canceled() { if (!ui.button_pressed()) return false; // Return if the button isn't pressed ui.set_status_P(PSTR(MSG_G26_CANCELED), 99); #if HAS_LCD_MENU ui.quick_feedback(); #endif ui.wait_for_release(); return true; } #endif mesh_index_pair find_closest_circle_to_print(const float &X, const float &Y) { float closest = 99999.99; mesh_index_pair return_val; return_val.x_index = return_val.y_index = -1; for (uint8_t i = 0; i < GRID_MAX_POINTS_X; i++) { for (uint8_t j = 0; j < GRID_MAX_POINTS_Y; j++) { if (!is_bitmap_set(circle_flags, i, j)) { const float mx = _GET_MESH_X(i), // We found a circle that needs to be printed my = _GET_MESH_Y(j); // Get the distance to this intersection float f = HYPOT(X - mx, Y - my); // It is possible that we are being called with the values // to let us find the closest circle to the start position. // But if this is not the case, add a small weighting to the // distance calculation to help it choose a better place to continue. f += HYPOT(g26_x_pos - mx, g26_y_pos - my) / 15.0; // Add in the specified amount of Random Noise to our search if (random_deviation > 1.0) f += random(0.0, random_deviation); if (f < closest) { closest = f; // We found a closer location that is still return_val.x_index = i; // un-printed --- save the data for it return_val.y_index = j; return_val.distance = closest; } } } } bitmap_set(circle_flags, return_val.x_index, return_val.y_index); // Mark this location as done. return return_val; } void G26_line_to_destination(const float &feed_rate) { const float save_feedrate = feedrate_mm_s; feedrate_mm_s = feed_rate; prepare_move_to_destination(); // will ultimately call ubl.line_to_destination_cartesian or ubl.prepare_linear_move_to for UBL_SEGMENTED feedrate_mm_s = save_feedrate; } void move_to(const float &rx, const float &ry, const float &z, const float &e_delta) { float feed_value; static float last_z = -999.99; bool has_xy_component = (rx != current_position[X_AXIS] || ry != current_position[Y_AXIS]); // Check if X or Y is involved in the movement. if (z != last_z) { last_z = z; feed_value = planner.settings.max_feedrate_mm_s[Z_AXIS]/(2.0); // Base the feed rate off of the configured Z_AXIS feed rate destination[X_AXIS] = current_position[X_AXIS]; destination[Y_AXIS] = current_position[Y_AXIS]; destination[Z_AXIS] = z; // We know the last_z!=z or we wouldn't be in this block of code. destination[E_AXIS] = current_position[E_AXIS]; G26_line_to_destination(feed_value); set_destination_from_current(); } // Check if X or Y is involved in the movement. // Yes: a 'normal' movement. No: a retract() or recover() feed_value = has_xy_component ? G26_XY_FEEDRATE : planner.settings.max_feedrate_mm_s[E_AXIS] / 1.5; destination[X_AXIS] = rx; destination[Y_AXIS] = ry; destination[E_AXIS] += e_delta; G26_line_to_destination(feed_value); set_destination_from_current(); } FORCE_INLINE void move_to(const float (&where)[XYZE], const float &de) { move_to(where[X_AXIS], where[Y_AXIS], where[Z_AXIS], de); } void retract_filament(const float (&where)[XYZE]) { if (!g26_retracted) { // Only retract if we are not already retracted! g26_retracted = true; move_to(where, -1.0 * g26_retraction_multiplier); } } void recover_filament(const float (&where)[XYZE]) { if (g26_retracted) { // Only un-retract if we are retracted. move_to(where, 1.2 * g26_retraction_multiplier); g26_retracted = false; } } /** * print_line_from_here_to_there() takes two cartesian coordinates and draws a line from one * to the other. But there are really three sets of coordinates involved. The first coordinate * is the present location of the nozzle. We don't necessarily want to print from this location. * We first need to move the nozzle to the start of line segment where we want to print. Once * there, we can use the two coordinates supplied to draw the line. * * Note: Although we assume the first set of coordinates is the start of the line and the second * set of coordinates is the end of the line, it does not always work out that way. This function * optimizes the movement to minimize the travel distance before it can start printing. This saves * a lot of time and eliminates a lot of nonsensical movement of the nozzle. However, it does * cause a lot of very little short retracement of th nozzle when it draws the very first line * segment of a 'circle'. The time this requires is very short and is easily saved by the other * cases where the optimization comes into play. */ void print_line_from_here_to_there(const float &sx, const float &sy, const float &sz, const float &ex, const float &ey, const float &ez) { const float dx_s = current_position[X_AXIS] - sx, // find our distance from the start of the actual line segment dy_s = current_position[Y_AXIS] - sy, dist_start = HYPOT2(dx_s, dy_s), // We don't need to do a sqrt(), we can compare the distance^2 // to save computation time dx_e = current_position[X_AXIS] - ex, // find our distance from the end of the actual line segment dy_e = current_position[Y_AXIS] - ey, dist_end = HYPOT2(dx_e, dy_e), line_length = HYPOT(ex - sx, ey - sy); // If the end point of the line is closer to the nozzle, flip the direction, // moving from the end to the start. On very small lines the optimization isn't worth it. if (dist_end < dist_start && (INTERSECTION_CIRCLE_RADIUS) < ABS(line_length)) return print_line_from_here_to_there(ex, ey, ez, sx, sy, sz); // Decide whether to retract & bump if (dist_start > 2.0) { retract_filament(destination); //todo: parameterize the bump height with a define move_to(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS] + 0.500, 0.0); // Z bump to minimize scraping move_to(sx, sy, sz + 0.500, 0.0); // Get to the starting point with no extrusion while bumped } move_to(sx, sy, sz, 0.0); // Get to the starting point with no extrusion / un-Z bump const float e_pos_delta = line_length * g26_e_axis_feedrate * g26_extrusion_multiplier; recover_filament(destination); move_to(ex, ey, ez, e_pos_delta); // Get to the ending point with an appropriate amount of extrusion } inline bool look_for_lines_to_connect() { float sx, sy, ex, ey; for (uint8_t i = 0; i < GRID_MAX_POINTS_X; i++) { for (uint8_t j = 0; j < GRID_MAX_POINTS_Y; j++) { #if HAS_LCD_MENU if (user_canceled()) return true; #endif if (i < GRID_MAX_POINTS_X) { // Can't connect to anything to the right than GRID_MAX_POINTS_X. // Already a half circle at the edge of the bed. if (is_bitmap_set(circle_flags, i, j) && is_bitmap_set(circle_flags, i + 1, j)) { // check if we can do a line to the left if (!is_bitmap_set(horizontal_mesh_line_flags, i, j)) { // Two circles need a horizontal line to connect them sx = _GET_MESH_X( i ) + (INTERSECTION_CIRCLE_RADIUS - (CROSSHAIRS_SIZE)); // right edge ex = _GET_MESH_X(i + 1) - (INTERSECTION_CIRCLE_RADIUS - (CROSSHAIRS_SIZE)); // left edge LIMIT(sx, X_MIN_POS + 1, X_MAX_POS - 1); sy = ey = constrain(_GET_MESH_Y(j), Y_MIN_POS + 1, Y_MAX_POS - 1); LIMIT(ex, X_MIN_POS + 1, X_MAX_POS - 1); if (position_is_reachable(sx, sy) && position_is_reachable(ex, ey)) print_line_from_here_to_there(sx, sy, g26_layer_height, ex, ey, g26_layer_height); bitmap_set(horizontal_mesh_line_flags, i, j); // Mark done, even if skipped } } if (j < GRID_MAX_POINTS_Y) { // Can't connect to anything further back than GRID_MAX_POINTS_Y. // Already a half circle at the edge of the bed. if (is_bitmap_set(circle_flags, i, j) && is_bitmap_set(circle_flags, i, j + 1)) { // check if we can do a line straight down if (!is_bitmap_set( vertical_mesh_line_flags, i, j)) { // Two circles that need a vertical line to connect them sy = _GET_MESH_Y( j ) + (INTERSECTION_CIRCLE_RADIUS - (CROSSHAIRS_SIZE)); // top edge ey = _GET_MESH_Y(j + 1) - (INTERSECTION_CIRCLE_RADIUS - (CROSSHAIRS_SIZE)); // bottom edge sx = ex = constrain(_GET_MESH_X(i), X_MIN_POS + 1, X_MAX_POS - 1); LIMIT(sy, Y_MIN_POS + 1, Y_MAX_POS - 1); LIMIT(ey, Y_MIN_POS + 1, Y_MAX_POS - 1); if (position_is_reachable(sx, sy) && position_is_reachable(ex, ey)) print_line_from_here_to_there(sx, sy, g26_layer_height, ex, ey, g26_layer_height); bitmap_set(vertical_mesh_line_flags, i, j); // Mark done, even if skipped } } } } } } return false; } /** * Turn on the bed and nozzle heat and * wait for them to get up to temperature. */ inline bool turn_on_heaters() { SERIAL_ECHOLNPGM("Waiting for heatup."); #if HAS_HEATED_BED if (g26_bed_temp > 25) { #if HAS_SPI_LCD ui.set_status_P(PSTR(MSG_G26_HEATING_BED), 99); ui.quick_feedback(); #if HAS_LCD_MENU ui.capture(); #endif #endif thermalManager.setTargetBed(g26_bed_temp); // Wait for the temperature to stabilize if (!thermalManager.wait_for_bed(true #if G26_CLICK_CAN_CANCEL , true #endif ) ) return G26_ERR; } #endif // HAS_HEATED_BED // Start heating the active nozzle #if HAS_SPI_LCD ui.set_status_P(PSTR(MSG_G26_HEATING_NOZZLE), 99); ui.quick_feedback(); #endif thermalManager.setTargetHotend(g26_hotend_temp, active_extruder); // Wait for the temperature to stabilize if (!thermalManager.wait_for_hotend(active_extruder, true #if G26_CLICK_CAN_CANCEL , true #endif ) ) return G26_ERR; #if HAS_SPI_LCD ui.reset_status(); ui.quick_feedback(); #endif return G26_OK; } /** * Prime the nozzle if needed. Return true on error. */ inline bool prime_nozzle() { #if HAS_LCD_MENU #if ENABLED(PREVENT_LENGTHY_EXTRUDE) float Total_Prime = 0.0; #endif if (g26_prime_flag == -1) { // The user wants to control how much filament gets purged ui.capture(); ui.set_status_P(PSTR(MSG_G26_MANUAL_PRIME), 99); ui.chirp(); set_destination_from_current(); recover_filament(destination); // Make sure G26 doesn't think the filament is retracted(). while (!ui.button_pressed()) { ui.chirp(); destination[E_AXIS] += 0.25; #if ENABLED(PREVENT_LENGTHY_EXTRUDE) Total_Prime += 0.25; if (Total_Prime >= EXTRUDE_MAXLENGTH) return G26_ERR; #endif G26_line_to_destination(planner.settings.max_feedrate_mm_s[E_AXIS] / 15.0); set_destination_from_current(); planner.synchronize(); // Without this synchronize, the purge is more consistent, // but because the planner has a buffer, we won't be able // to stop as quickly. So we put up with the less smooth // action to give the user a more responsive 'Stop'. } ui.wait_for_release(); ui.set_status_P(PSTR(MSG_G26_PRIME_DONE), 99); ui.quick_feedback(); ui.release(); } else #endif { #if HAS_SPI_LCD ui.set_status_P(PSTR(MSG_G26_FIXED_LENGTH), 99); ui.quick_feedback(); #endif set_destination_from_current(); destination[E_AXIS] += g26_prime_length; G26_line_to_destination(planner.settings.max_feedrate_mm_s[E_AXIS] / 15.0); set_destination_from_current(); retract_filament(destination); } return G26_OK; } float valid_trig_angle(float d) { while (d > 360.0) d -= 360.0; while (d < 0.0) d += 360.0; return d; } /** * G26: Mesh Validation Pattern generation. * * Used to interactively edit the mesh by placing the * nozzle in a problem area and doing a G29 P4 R command. * * Parameters: * * B Bed Temperature * C Continue from the Closest mesh point * D Disable leveling before starting * F Filament diameter * H Hotend Temperature * K Keep heaters on when completed * L Layer Height * O Ooze extrusion length * P Prime length * Q Retraction multiplier * R Repetitions (number of grid points) * S Nozzle Size (diameter) in mm * T Tool index to change to, if included * U Random deviation (50 if no value given) * X X position * Y Y position */ void GcodeSuite::G26() { SERIAL_ECHOLNPGM("G26 starting..."); // Don't allow Mesh Validation without homing first, // or if the parameter parsing did not go OK, abort if (axis_unhomed_error()) return; // Change the tool first, if specified if (parser.seenval('T')) tool_change(parser.value_int()); g26_extrusion_multiplier = EXTRUSION_MULTIPLIER; g26_retraction_multiplier = RETRACTION_MULTIPLIER; g26_layer_height = MESH_TEST_LAYER_HEIGHT; g26_prime_length = PRIME_LENGTH; g26_bed_temp = MESH_TEST_BED_TEMP; g26_hotend_temp = MESH_TEST_HOTEND_TEMP; g26_prime_flag = 0; float g26_nozzle = MESH_TEST_NOZZLE_SIZE, g26_filament_diameter = DEFAULT_NOMINAL_FILAMENT_DIA, g26_ooze_amount = parser.linearval('O', OOZE_AMOUNT); bool g26_continue_with_closest = parser.boolval('C'), g26_keep_heaters_on = parser.boolval('K'); #if HAS_HEATED_BED if (parser.seenval('B')) { g26_bed_temp = parser.value_celsius(); if (g26_bed_temp && !WITHIN(g26_bed_temp, 40, (BED_MAXTEMP - 10))) { SERIAL_ECHOLNPAIR("?Specified bed temperature not plausible (40-", int(BED_MAXTEMP - 10), "C)."); return; } } #endif if (parser.seenval('L')) { g26_layer_height = parser.value_linear_units(); if (!WITHIN(g26_layer_height, 0.0, 2.0)) { SERIAL_ECHOLNPGM("?Specified layer height not plausible."); return; } } if (parser.seen('Q')) { if (parser.has_value()) { g26_retraction_multiplier = parser.value_float(); if (!WITHIN(g26_retraction_multiplier, 0.05, 15.0)) { SERIAL_ECHOLNPGM("?Specified Retraction Multiplier not plausible."); return; } } else { SERIAL_ECHOLNPGM("?Retraction Multiplier must be specified."); return; } } if (parser.seenval('S')) { g26_nozzle = parser.value_float(); if (!WITHIN(g26_nozzle, 0.1, 2.0)) { SERIAL_ECHOLNPGM("?Specified nozzle size not plausible."); return; } } if (parser.seen('P')) { if (!parser.has_value()) { #if HAS_LCD_MENU g26_prime_flag = -1; #else SERIAL_ECHOLNPGM("?Prime length must be specified when not using an LCD."); return; #endif } else { g26_prime_flag++; g26_prime_length = parser.value_linear_units(); if (!WITHIN(g26_prime_length, 0.0, 25.0)) { SERIAL_ECHOLNPGM("?Specified prime length not plausible."); return; } } } if (parser.seenval('F')) { g26_filament_diameter = parser.value_linear_units(); if (!WITHIN(g26_filament_diameter, 1.0, 4.0)) { SERIAL_ECHOLNPGM("?Specified filament size not plausible."); return; } } g26_extrusion_multiplier *= sq(1.75) / sq(g26_filament_diameter); // If we aren't using 1.75mm filament, we need to // scale up or down the length needed to get the // same volume of filament g26_extrusion_multiplier *= g26_filament_diameter * sq(g26_nozzle) / sq(0.3); // Scale up by nozzle size if (parser.seenval('H')) { g26_hotend_temp = parser.value_celsius(); if (!WITHIN(g26_hotend_temp, 165, (HEATER_0_MAXTEMP - 15))) { SERIAL_ECHOLNPGM("?Specified nozzle temperature not plausible."); return; } } if (parser.seen('U')) { randomSeed(millis()); // This setting will persist for the next G26 random_deviation = parser.has_value() ? parser.value_float() : 50.0; } int16_t g26_repeats; #if HAS_LCD_MENU g26_repeats = parser.intval('R', GRID_MAX_POINTS + 1); #else if (!parser.seen('R')) { SERIAL_ECHOLNPGM("?(R)epeat must be specified when not using an LCD."); return; } else g26_repeats = parser.has_value() ? parser.value_int() : GRID_MAX_POINTS + 1; #endif if (g26_repeats < 1) { SERIAL_ECHOLNPGM("?(R)epeat value not plausible; must be at least 1."); return; } g26_x_pos = parser.seenval('X') ? RAW_X_POSITION(parser.value_linear_units()) : current_position[X_AXIS]; g26_y_pos = parser.seenval('Y') ? RAW_Y_POSITION(parser.value_linear_units()) : current_position[Y_AXIS]; if (!position_is_reachable(g26_x_pos, g26_y_pos)) { SERIAL_ECHOLNPGM("?Specified X,Y coordinate out of bounds."); return; } /** * Wait until all parameters are verified before altering the state! */ set_bed_leveling_enabled(!parser.seen('D')); if (current_position[Z_AXIS] < Z_CLEARANCE_BETWEEN_PROBES) { do_blocking_move_to_z(Z_CLEARANCE_BETWEEN_PROBES); set_current_from_destination(); } #if DISABLED(NO_VOLUMETRICS) bool volumetric_was_enabled = parser.volumetric_enabled; parser.volumetric_enabled = false; planner.calculate_volumetric_multipliers(); #endif if (turn_on_heaters() != G26_OK) goto LEAVE; current_position[E_AXIS] = 0.0; sync_plan_position_e(); if (g26_prime_flag && prime_nozzle() != G26_OK) goto LEAVE; /** * Bed is preheated * * Nozzle is at temperature * * Filament is primed! * * It's "Show Time" !!! */ ZERO(circle_flags); ZERO(horizontal_mesh_line_flags); ZERO(vertical_mesh_line_flags); // Move nozzle to the specified height for the first layer set_destination_from_current(); destination[Z_AXIS] = g26_layer_height; move_to(destination, 0.0); move_to(destination, g26_ooze_amount); #if HAS_LCD_MENU ui.capture(); #endif #if DISABLED(ARC_SUPPORT) /** * Pre-generate radius offset values at 30 degree intervals to reduce CPU load. */ #define A_INT 30 #define _ANGS (360 / A_INT) #define A_CNT (_ANGS / 2) #define _IND(A) ((A + _ANGS * 8) % _ANGS) #define _COS(A) (trig_table[_IND(A) % A_CNT] * (_IND(A) >= A_CNT ? -1 : 1)) #define _SIN(A) (-_COS((A + A_CNT / 2) % _ANGS)) #if A_CNT & 1 #error "A_CNT must be a positive value. Please change A_INT." #endif float trig_table[A_CNT]; for (uint8_t i = 0; i < A_CNT; i++) trig_table[i] = INTERSECTION_CIRCLE_RADIUS * cos(RADIANS(i * A_INT)); #endif // !ARC_SUPPORT mesh_index_pair location; do { location = g26_continue_with_closest ? find_closest_circle_to_print(current_position[X_AXIS], current_position[Y_AXIS]) : find_closest_circle_to_print(g26_x_pos, g26_y_pos); // Find the closest Mesh Intersection to where we are now. if (location.x_index >= 0 && location.y_index >= 0) { const float circle_x = _GET_MESH_X(location.x_index), circle_y = _GET_MESH_Y(location.y_index); // If this mesh location is outside the printable_radius, skip it. if (!position_is_reachable(circle_x, circle_y)) continue; // Determine where to start and end the circle, // which is always drawn counter-clockwise. const uint8_t xi = location.x_index, yi = location.y_index; const bool f = yi == 0, r = xi >= GRID_MAX_POINTS_X - 1, b = yi >= GRID_MAX_POINTS_Y - 1; #if ENABLED(ARC_SUPPORT) #define ARC_LENGTH(quarters) (INTERSECTION_CIRCLE_RADIUS * M_PI * (quarters) / 2) #define INTERSECTION_CIRCLE_DIAM ((INTERSECTION_CIRCLE_RADIUS) * 2) float sx = circle_x + INTERSECTION_CIRCLE_RADIUS, // default to full circle ex = circle_x + INTERSECTION_CIRCLE_RADIUS, sy = circle_y, ey = circle_y, arc_length = ARC_LENGTH(4); // Figure out where to start and end the arc - we always print counterclockwise if (xi == 0) { // left edge if (!f) { sx = circle_x; sy -= INTERSECTION_CIRCLE_RADIUS; } if (!b) { ex = circle_x; ey += INTERSECTION_CIRCLE_RADIUS; } arc_length = (f || b) ? ARC_LENGTH(1) : ARC_LENGTH(2); } else if (r) { // right edge sx = b ? circle_x - (INTERSECTION_CIRCLE_RADIUS) : circle_x; ex = f ? circle_x - (INTERSECTION_CIRCLE_RADIUS) : circle_x; sy = b ? circle_y : circle_y + INTERSECTION_CIRCLE_RADIUS; ey = f ? circle_y : circle_y - (INTERSECTION_CIRCLE_RADIUS); arc_length = (f || b) ? ARC_LENGTH(1) : ARC_LENGTH(2); } else if (f) { ex -= INTERSECTION_CIRCLE_DIAM; arc_length = ARC_LENGTH(2); } else if (b) { sx -= INTERSECTION_CIRCLE_DIAM; arc_length = ARC_LENGTH(2); } const float arc_offset[2] = { circle_x - sx, circle_y - sy }, dx_s = current_position[X_AXIS] - sx, // find our distance from the start of the actual circle dy_s = current_position[Y_AXIS] - sy, dist_start = HYPOT2(dx_s, dy_s), endpoint[XYZE] = { ex, ey, g26_layer_height, current_position[E_AXIS] + (arc_length * g26_e_axis_feedrate * g26_extrusion_multiplier) }; if (dist_start > 2.0) { retract_filament(destination); //todo: parameterize the bump height with a define move_to(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS] + 0.500, 0.0); // Z bump to minimize scraping move_to(sx, sy, g26_layer_height + 0.500, 0.0); // Get to the starting point with no extrusion while bumped } move_to(sx, sy, g26_layer_height, 0.0); // Get to the starting point with no extrusion / un-Z bump recover_filament(destination); const float save_feedrate = feedrate_mm_s; feedrate_mm_s = PLANNER_XY_FEEDRATE() / 10.0; plan_arc(endpoint, arc_offset, false); // Draw a counter-clockwise arc feedrate_mm_s = save_feedrate; set_destination_from_current(); #if HAS_LCD_MENU if (user_canceled()) goto LEAVE; // Check if the user wants to stop the Mesh Validation #endif #else // !ARC_SUPPORT int8_t start_ind = -2, end_ind = 9; // Assume a full circle (from 5:00 to 5:00) if (xi == 0) { // Left edge? Just right half. start_ind = f ? 0 : -3; // 03:00 to 12:00 for front-left end_ind = b ? 0 : 2; // 06:00 to 03:00 for back-left } else if (r) { // Right edge? Just left half. start_ind = b ? 6 : 3; // 12:00 to 09:00 for front-right end_ind = f ? 5 : 8; // 09:00 to 06:00 for back-right } else if (f) { // Front edge? Just back half. start_ind = 0; // 03:00 end_ind = 5; // 09:00 } else if (b) { // Back edge? Just front half. start_ind = 6; // 09:00 end_ind = 11; // 03:00 } for (int8_t ind = start_ind; ind <= end_ind; ind++) { #if HAS_LCD_MENU if (user_canceled()) goto LEAVE; // Check if the user wants to stop the Mesh Validation #endif float rx = circle_x + _COS(ind), // For speed, these are now a lookup table entry ry = circle_y + _SIN(ind), xe = circle_x + _COS(ind + 1), ye = circle_y + _SIN(ind + 1); #if IS_KINEMATIC // Check to make sure this segment is entirely on the bed, skip if not. if (!position_is_reachable(rx, ry) || !position_is_reachable(xe, ye)) continue; #else // not, we need to skip LIMIT(rx, X_MIN_POS + 1, X_MAX_POS - 1); // This keeps us from bumping the endstops LIMIT(ry, Y_MIN_POS + 1, Y_MAX_POS - 1); LIMIT(xe, X_MIN_POS + 1, X_MAX_POS - 1); LIMIT(ye, Y_MIN_POS + 1, Y_MAX_POS - 1); #endif print_line_from_here_to_there(rx, ry, g26_layer_height, xe, ye, g26_layer_height); SERIAL_FLUSH(); // Prevent host M105 buffer overrun. } #endif // !ARC_SUPPORT if (look_for_lines_to_connect()) goto LEAVE; } SERIAL_FLUSH(); // Prevent host M105 buffer overrun. } while (--g26_repeats && location.x_index >= 0 && location.y_index >= 0); LEAVE: ui.set_status_P(PSTR(MSG_G26_LEAVING), -1); retract_filament(destination); destination[Z_AXIS] = Z_CLEARANCE_BETWEEN_PROBES; move_to(destination, 0); // Raise the nozzle destination[X_AXIS] = g26_x_pos; // Move back to the starting position destination[Y_AXIS] = g26_y_pos; //destination[Z_AXIS] = Z_CLEARANCE_BETWEEN_PROBES; // Keep the nozzle where it is move_to(destination, 0); // Move back to the starting position #if DISABLED(NO_VOLUMETRICS) parser.volumetric_enabled = volumetric_was_enabled; planner.calculate_volumetric_multipliers(); #endif #if HAS_LCD_MENU ui.release(); // Give back control of the LCD #endif if (!g26_keep_heaters_on) { #if HAS_HEATED_BED thermalManager.setTargetBed(0); #endif thermalManager.setTargetHotend(active_extruder, 0); } } #endif // G26_MESH_VALIDATION