enabling coordinate-axis switch

Author: Michel Kuhlmann

bin/2dmTransform

@@ -1,29 +1,33 @@
 #!/usr/bin/env julia
 # | Transform a 2dm-mesh (currently translation and scaling)
-#   TODO: rotation, centering bbox 
+#   TODO: rotation, centering bbox
 using ArgParse
 using SurfaceMesh
 
 function parseCmd(args)
     s = ArgParseSettings("Transform a 2dm-mesh: " *
                          "translation, scaling: ")
     @add_arg_table s begin
-        "--transX"
+        "--transX", "-x"
           arg_type = FloatingPoint
           default = 0.0
           help = "Translation in x"
-        "--transY"
+        "--transY", "-y"
           arg_type = FloatingPoint
           default = 0.0
           help = "Translation in x"
-        "--transZ"
+        "--transZ", "-z"
           arg_type = FloatingPoint
           default = 0.0
           help = "Translation in x"
-        "--scale"
+        "--scale", "-s"
           arg_type = FloatingPoint
           default = 1.0
           help = "Scaling factor"
+        "--coords_order", "-c"
+          arg_type = String
+          default = "1:2:3"
+          help = "Coordinate axis order"
         "mesh-file"
           help = "mesh (2dm)-file"
     end
@@ -36,6 +40,7 @@ openMesh(f::Nothing) = STDIN
 function main()
     args = parseCmd(ARGS)
     con = openMesh(args["mesh-file"])
+    cco = int(split(args["coords_order"], ":"))
     while true
         l = readline(con)
         if l == ""
@@ -50,7 +55,7 @@ function main()
                vn =
                    (v + Vertex(args["transX"], args["transY"], args["transZ"])) *
                     args["scale"]
-                (vn1, vn2, vn3) = round(vn, 3)
+                (vn1, vn2, vn3) = round(vn, 3)[cco]
                 write("ND $(int(i)) $vn1 $vn2 $vn3\n")
             end
         end

doc/2dmTransform.md

@@ -10,23 +10,26 @@ Transforming nodes of 2dm-mesh.
 ./bin/2dmTransform -h
 ```
 
-    usage: 2dmTransform [--transX TRANSX] [--transY TRANSY]
-                        [--transZ TRANSZ] [--scale SCALE] [-h] [mesh-file]
+    usage: 2dmTransform [-x TRANSX] [-y TRANSY] [-z TRANSZ] [-s SCALE]
+                        [-c COORDS_ORDER] [-h] [mesh-file]
 
     Transform a 2dm-mesh: translation, scaling:
 
     positional arguments:
-      mesh-file        mesh (2dm)-file
+      mesh-file             mesh (2dm)-file
 
     optional arguments:
-      --transX TRANSX  Translation in x (type: FloatingPoint, default:
-                       0.0)
-      --transY TRANSY  Translation in x (type: FloatingPoint, default:
-                       0.0)
-      --transZ TRANSZ  Translation in x (type: FloatingPoint, default:
-                       0.0)
-      --scale SCALE    Scaling factor (type: FloatingPoint, default: 1.0)
-      -h, --help       show this help message and exit
+      -x, --transX TRANSX   Translation in x (type: FloatingPoint,
+                            default: 0.0)
+      -y, --transY TRANSY   Translation in x (type: FloatingPoint,
+                            default: 0.0)
+      -z, --transZ TRANSZ   Translation in x (type: FloatingPoint,
+                            default: 0.0)
+      -s, --scale SCALE     Scaling factor (type: FloatingPoint, default:
+                            1.0)
+      -c, --coords_order COORDS_ORDER
+                            Coordinate axis order (default: 1:2:3)
+      -h, --help            show this help message and exit
 
 Results are printed to `stdout`. Hence redirection is necassary; eg: