Fixed inability to cut in a straight line using two distant points. R…

…emoved support structures from example gcode files. Added simple square engraving example.

mods/gnode/gcode/boat.gcode

@@ -1,58 +1,3 @@
-; generated by Slic3r 1.3.0 on 2021-12-29 at 00:23:07
-
-; external perimeters extrusion width = 0.55mm (4.37mm^3/s)
-; perimeters extrusion width = 0.70mm (11.44mm^3/s)
-; infill extrusion width = 0.62mm (13.45mm^3/s)
-; solid infill extrusion width = 0.70mm (3.81mm^3/s)
-; top infill extrusion width = 0.70mm (2.86mm^3/s)
-
-M107
-M104 S200 ; set temperature
-G28 ; home all axes
-G1 Z5 F5000 ; lift nozzle
-
-; Filament gcode
-
-M109 S200 ; set temperature and wait for it to be reached
-G21 ; set units to millimeters
-G90 ; use absolute coordinates
-M82 ; use absolute distances for extrusion
-G92 E0
-G1 Z0.350 F7800.000
-G1 E-2.00000 F2400.00000
-G92 E0
-G1 X71.068 Y86.674 F7800.000
-G1 E2.00000 F2400.00000
-G1 F1800
-G1 X73.892 Y85.795 E2.09151
-G1 X93.392 Y84.295 E2.69665
-G1 X93.900 Y84.275 E2.71238
-G1 X104.600 Y84.275 E3.04345
-G1 X107.563 Y84.975 E3.13764
-G1 X113.563 Y87.975 E3.34520
-G1 X115.285 Y89.215 E3.41087
-G1 X118.285 Y92.215 E3.54214
-G1 X119.601 Y94.093 E3.61311
-G1 X120.225 Y96.900 E3.70206
-G1 X120.225 Y101.600 E3.84749
-G1 X119.525 Y104.563 E3.94168
-G1 X118.025 Y107.563 E4.04546
-G1 X115.775 Y110.112 E4.15068
-G1 X111.275 Y113.112 E4.31803
-G1 X109.175 Y114.035 E4.38899
-G1 X107.600 Y114.225 E4.43808
-G1 X77.400 Y114.225 E5.37251
-G1 X74.437 Y113.525 E5.46670
-G1 X71.437 Y112.025 E5.57048
-G1 X69.594 Y110.660 E5.64144
-G1 X68.328 Y108.748 E5.71240
-G1 X67.775 Y106.100 E5.79611
-G1 X67.775 Y92.400 E6.22001
-G1 X68.172 Y90.141 E6.29097
-G1 X69.315 Y88.153 E6.36193
-G1 X71.011 Y86.722 E6.43058
-G1 E4.43058 F2400.00000
-G92 E0
 G1 X106.000 Y104.500 F7800.000
 G1 E2.00000 F2400.00000
 G1 F1800

mods/gnode/gcode/bunny.gcode

@@ -1,62 +1,3 @@
-; generated by Slic3r 1.3.0 on 2021-12-29 at 00:23:16
-
-; external perimeters extrusion width = 0.55mm (4.37mm^3/s)
-; perimeters extrusion width = 0.70mm (11.44mm^3/s)
-; infill extrusion width = 0.62mm (13.45mm^3/s)
-; solid infill extrusion width = 0.70mm (3.81mm^3/s)
-; top infill extrusion width = 0.70mm (2.86mm^3/s)
-
-M107
-M104 S200 ; set temperature
-G28 ; home all axes
-G1 Z5 F5000 ; lift nozzle
-
-; Filament gcode
-
-M109 S200 ; set temperature and wait for it to be reached
-G21 ; set units to millimeters
-G90 ; use absolute coordinates
-M82 ; use absolute distances for extrusion
-G92 E0
-G1 Z0.350 F7800.000
-G1 E-2.00000 F2400.00000
-G92 E0
-G1 X82.215 Y80.215 F7800.000
-G1 E2.00000 F2400.00000
-G1 F1800
-G1 X84.440 Y78.749 E2.08243
-G1 X94.440 Y74.749 E2.41568
-G1 X96.900 Y74.275 E2.49321
-G1 X101.100 Y74.275 E2.62316
-G1 X102.707 Y74.473 E2.67325
-G1 X110.707 Y76.473 E2.92840
-G1 X111.195 Y76.615 E2.94413
-G1 X117.195 Y78.615 E3.13982
-G1 X119.785 Y80.215 E3.23401
-G1 X125.785 Y86.215 E3.49656
-G1 X127.101 Y88.093 E3.56752
-G1 X127.725 Y90.900 E3.65648
-G1 X127.725 Y99.100 E3.91020
-G1 X127.328 Y101.359 E3.98116
-G1 X125.785 Y103.785 E4.07012
-G1 X117.785 Y111.785 E4.42018
-G1 X115.195 Y113.385 E4.51437
-G1 X109.195 Y115.385 E4.71006
-G1 X107.100 Y115.725 E4.77573
-G1 X92.900 Y115.725 E5.21510
-G1 X90.641 Y115.328 E5.28606
-G1 X88.215 Y113.785 E5.37502
-G1 X78.215 Y103.785 E5.81259
-G1 X76.899 Y101.907 E5.88356
-G1 X76.275 Y99.100 E5.97251
-G1 X76.275 Y96.900 E6.04058
-G1 X76.404 Y95.601 E6.08098
-G1 X78.404 Y85.601 E6.39652
-G1 X79.236 Y83.464 E6.46748
-G1 X80.215 Y82.215 E6.51658
-G1 X82.162 Y80.269 E6.60177
-G1 E4.60177 F2400.00000
-G92 E0
 G1 X111.500 Y103.500 F7800.000
 G1 E2.00000 F2400.00000
 G1 F1800

mods/gnode/gcode/cat.gcode

@@ -15,7 +15,7 @@
 ; single wall width = 0.56mm
 
 M104 S180 ; set temperature
-M92 X78.7402 Y78.7402 E926 ;Set the right speed
+M92 X78.7402 Y78.7402 E-1
 G28 ;home all axes
 M106 ;turn fan on
 M109 S180 ; wait for temperature to be reached
@@ -24,7 +24,7 @@ G21 ; set units to millimeters
 G92 E0 ; reset extrusion distance
 M82 ; use absolute distances for extrusion
 M106 S254
-G1 Z0.100 F5400.000
+G0 Z0.100 F5400.000
 G1 X94.574 Y95.403
 G1
 G1 X94.746 Y95.307 F360.000 E0.00156

mods/gnode/gcode/cube.gcode

@@ -1,58 +1,3 @@
-; generated by Slic3r 1.3.0 on 2021-12-29 at 00:19:45
-
-; external perimeters extrusion width = 0.55mm (4.37mm^3/s)
-; perimeters extrusion width = 0.70mm (11.44mm^3/s)
-; infill extrusion width = 0.62mm (13.45mm^3/s)
-; solid infill extrusion width = 0.70mm (3.81mm^3/s)
-; top infill extrusion width = 0.70mm (2.86mm^3/s)
-
-M107
-M104 S200 ; set temperature
-G28 ; home all axes
-G1 Z5 F5000 ; lift nozzle
-
-; Filament gcode
-
-M109 S200 ; set temperature and wait for it to be reached
-G21 ; set units to millimeters
-G90 ; use absolute coordinates
-M82 ; use absolute distances for extrusion
-G92 E0
-G1 Z0.350 F7800.000
-G1 E-2.00000 F2400.00000
-G92 E0
-G1 X84.915 Y85.753 F7800.000
-G1 E2.00000 F2400.00000
-G1 F1800
-G1 X86.668 Y84.274 E2.07096
-G1 X88.820 Y83.481 E2.14192
-G1 X90.000 Y83.375 E2.17858
-G1 X110.000 Y83.375 E2.79740
-G1 X112.259 Y83.772 E2.86836
-G1 X114.247 Y84.915 E2.93933
-G1 X115.726 Y86.668 E3.01029
-G1 X116.519 Y88.820 E3.08125
-G1 X116.625 Y90.000 E3.11790
-G1 X116.625 Y110.000 E3.73673
-G1 X116.228 Y112.259 E3.80769
-G1 X115.085 Y114.247 E3.87865
-G1 X113.332 Y115.726 E3.94962
-G1 X111.180 Y116.519 E4.02058
-G1 X110.000 Y116.625 E4.05723
-G1 X90.000 Y116.625 E4.67606
-G1 X87.741 Y116.228 E4.74702
-G1 X85.753 Y115.085 E4.81798
-G1 X84.274 Y113.332 E4.88894
-G1 X83.481 Y111.180 E4.95990
-G1 X83.375 Y110.000 E4.99656
-G1 X83.375 Y90.000 E5.61538
-G1 X83.772 Y87.741 E5.68634
-G1 X84.878 Y85.818 E5.75499
-G1 E3.75499 F2400.00000
-G92 E0
-G1 X108.400 Y108.400 F7800.000
-G1 E2.00000 F2400.00000
-G1 F1800
 G1 X91.600 Y108.400 E2.51983
 G1 X91.600 Y91.600 E3.03966
 G1 X108.400 Y91.600 E3.55948

mods/gnode/gcode/files.json

@@ -11,6 +11,10 @@
 	  {
          "name":"face.gcode",
          "type":"cut"
+      },
+	  {
+         "name":"square.gcode",
+         "type":"cut"
       },
 	  {
          "name":"cat.gcode",

mods/gnode/gcode/square.gcode

@@ -0,0 +1,10 @@
+%
+G00 X0 Y0 F70
+G01 Z-1 F50
+G01 X0 Y20 F50
+G01 X20 Y20
+G01 X20 Y0
+G01 X0 Y0
+G00 Z0 F70
+M30
+%

mods/gnode/src/machine.lua

@@ -208,16 +208,23 @@ minetest.register_globalstep(function(dtime)
                     if height_to_depth then 
                         machine_pos.y = machine_pos.y - depth_offset 
                     end
-                    for height = machine_pos.y, 1, 1 do
-                        minetest.remove_node(vector.new(machine_pos.x, height, machine_pos.z))
+                    local next_pos = machine_path[path_index + 1]
+                    local x_dir = next_pos.x >= machine_pos.x and 1 or -1
+                    for x = machine_pos.x,next_pos.x,x_dir do
+                        local z_dir = next_pos.z >= machine_pos.z and 1 or -1
+                        for z = machine_pos.z,next_pos.z,z_dir do
+                            for height = machine_pos.y, 1, 1 do
+                                minetest.remove_node(vector.new(x, height, z))
+                            end
+                        end
                     end
                 elseif machine_motion[path_index] == 1 and machine_extrusion[path_index] >= 0 then
                     local next_pos = machine_path[path_index + 1]
                     if next_pos then
                         if next_pos.y == machine_pos.y then
-                            local x_dir = next_pos.x > machine_pos.x and 1 or -1
+                            local x_dir = next_pos.x >= machine_pos.x and 1 or -1
                             for x = machine_pos.x,next_pos.x,x_dir do
-                                local z_dir = next_pos.z > machine_pos.z and 1 or -1
+                                local z_dir = next_pos.z >= machine_pos.z and 1 or -1
                                 for z = machine_pos.z,next_pos.z,z_dir do
                                     minetest.set_node(vector.new(x,next_pos.y,z),{name="gnode:plastic"})
                                 end