Hello, This code is working fine (all variables are defined at some point but I don't paste all the code): step_start_points = [ for (a=[0:len(ext_avec_bordure)-1]) [ for (b = [ 0 : 1 ]) points_interieur[a][b] + diff_points[a][b] * (asin(i/(extrude_steps) * 2 - 1) / 180. + 0.5)] ]; step_end_points = [ for (a=[0:len(ext_avec_bordure)-1]) [ for (b = [ 0 : 1 ]) points_interieur[a][b] + diff_points[a][b] * (asin((i+1)/(extrude_steps) * 2 - 1) / 180. + 0.5)] ]; However, if I modify it like this... ext_type = 1; if (ext_type == 1) { step_start_points = [ for (a=[0:len(ext_avec_bordure)-1]) [ for (b = [ 0 : 1 ]) points_interieur[a][b] + diff_points[a][b] * (asin(i/(extrude_steps) * 2 - 1) / 180. + 0.5)] ]; step_end_points = [ for (a=[0:len(ext_avec_bordure)-1]) [ for (b = [ 0 : 1 ]) points_interieur[a][b] + diff_points[a][b] * (asin((i+1)/(extrude_steps) * 2 - 1) / 180. + 0.5)] ]; } ...I have two error messages: WARNING: Ignoring unknown variable 'step_start_points', in file extrusion profil dax + relief V13.scad, line 76. WARNING: Ignoring unknown variable 'step_end_points', in file extrusion profil dax + relief V13.scad, line 76. What's wrong? -- Sent from: http://forum.openscad.org/

When you define a variable in a block it goes out of scope at the end of the block. I.e. at the closing brace. Presumably something at line 76 tries to use it. On Mon, 6 Jul 2020 at 10:14, amundsen <roald.baudoux@brutele.be> wrote: > Hello, > > This code is working fine (all variables are defined at some point but I > don't paste all the code): > > step_start_points = [ for (a=[0:len(ext_avec_bordure)-1]) [ for (b = [ 0 : > 1 > ]) > points_interieur[a][b] > + diff_points[a][b] * (asin(i/(extrude_steps) * 2 - 1) / 180. + > 0.5)] ]; > step_end_points = [ for (a=[0:len(ext_avec_bordure)-1]) [ for (b = [ 0 : 1 > ]) > points_interieur[a][b] > + diff_points[a][b] * (asin((i+1)/(extrude_steps) * 2 - 1) / 180. > + 0.5)] > ]; > > However, if I modify it like this... > > ext_type = 1; > if (ext_type == 1) { > step_start_points = [ for (a=[0:len(ext_avec_bordure)-1]) [ for (b = > [ > 0 : 1 ]) > points_interieur[a][b] > + diff_points[a][b] * (asin(i/(extrude_steps) * 2 - 1) / 180. + > 0.5)] ]; > step_end_points = [ for (a=[0:len(ext_avec_bordure)-1]) [ for (b = [ 0 : 1 > ]) > points_interieur[a][b] > + diff_points[a][b] * (asin((i+1)/(extrude_steps) * 2 - 1) / 180. > + 0.5)] > ]; > } > > ...I have two error messages: > WARNING: Ignoring unknown variable 'step_start_points', in file extrusion > profil dax + relief V13.scad, line 76. > WARNING: Ignoring unknown variable 'step_end_points', in file extrusion > profil dax + relief V13.scad, line 76. > > What's wrong? > > > > -- > Sent from: http://forum.openscad.org/ > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org >

Roger. 

On Mon, Jul 06, 2020 at 10:16:56AM +0100, nop head wrote: > When you define a variable in a block it goes out of scope at the end of > the block. I.e. at the closing brace. Presumably something at line 76 tries > to use it. > > > On Mon, 6 Jul 2020 at 10:14, amundsen <roald.baudoux@brutele.be> wrote: > > > Hello, > > > > This code is working fine (all variables are defined at some point but I > > don't paste all the code): > > ext_type = 1; > > if (ext_type == 1) { Basically what you want is to assign a (different) value when ext_type == 1. Due to the reason nop-head explained above, what you're trying isn't working. You need to do: step_end_points = ext_type == 1) ? /* something */ : /* ... somethingelse */ ; Roger. -- ** R.E.Wolff@BitWizard.nl ** https://www.BitWizard.nl/ ** +31-15-2049110 ** ** Delftechpark 11 2628 XJ Delft, The Netherlands. KVK: 27239233 ** The plan was simple, like my brother-in-law Phil. But unlike Phil, this plan just might work.