Import LinuxCNC source tree

tests/trajectory-planner/circular-arcs/octave/create_3d_random_walk.m

@@ -0,0 +1,24 @@
+function create_3d_random_walk(num_moves, v_range, dp, theta, prefix,limits)
+    %% Create a random path for G-code testing
+    % This version of the code produces random lengths, and random 3d bends. Desired velocity is held at
+    if ~exist('limits','var')
+        limits=[-10,10,-10,10,-5,5]
+    end
+
+
+    tag = datestr(now(),"YYYY-MM-DD_HH-MM");
+    fsuf=sprintf('%dsteps_%gin-%gin_%gips_%gdeg_max_angle_%s.ngc',num_moves,dp(1),dp(end),v_range(end),max(theta)*180/pi,tag);
+    fid=fopen(sprintf('../nc_files/cv_random_walk_%s_%s',prefix,fsuf),'w');
+    %Initial state
+    header= 'G61 G90\n G0 X-.1 Y0 Z0 F20\n G1 X0 Y0 Z0\nG64\n';
+    fprintf(fid, header);
+    move=create_3d_line(v_range, dp, theta,[],limits);
+    for k=1:num_moves
+        move_prev=move;
+        move=create_3d_line(v_range, dp, theta, move_prev, limits);
+        fprintf(fid,'G1 X%f Y%f Z%f F%f\n', move_prev.P2(1), move_prev.P2(2), move.P2(3), move_prev.v_req*60);
+    end
+    fprintf(fid,'M30\n');
+    fclose(fid);
+
+end