2024年02月08日(木) 旧暦 [n年日記] [更新:"2024/02/08 04:41:37"]
#1 [openscad] upper version non - invert, negative resist
upper-nega-resist.stl
// upper version non - invert, negative resist
module slope (L, H, W, D) {
translate([ -W/2, -D * 2, 0]) cube([ W, D, H]);
translate([ -W/2, D + L, 0]) cube([ W, D, H]);
polyhedron(
points = [
[ -W/2, 0 , H],
[ W/2, 0 , H],
[ W/2, L , 0],
[ -W/2, L , 0],
[ -W/2, L , H],
[ W/2, L , H],
],
faces = [
[ 0, 1, 2, 3],
[ 3, 2, 5, 4],
[ 4, 5, 1, 0],
[ 0, 3, 4],
[ 1, 5, 2]
]
);
}
module slopex2(L, H, W, D, GAP) {
// x y z
translate([ W/2 + GAP, - L/2, 50 ]) rotate([0, 180, 0]) slope (L, H, W, D);
translate([ -W/2 - GAP, L/2, 50 ]) rotate([0, 180, 180]) slope (L, H, W, D);
}
// Length, Height, Width, shift, gap
slopex2 (300, 50, 100, 50, 10);%
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2024年02月09日(金) 旧暦 [n年日記] [更新:"2024/02/09 07:53:08"]
#1 [DWL66+][377nm] bit map format for contrast curve
Download (for Save Link As)
#!/usr/pkg/bin/perl
use strict;
my($VERSION);
$VERSION = "2024-02-10 08:32" ; # written by emacs time-stamp
## $VERSION .= ' UTC';
$VERSION =~ s/ /-/g;
$VERSION =~ s/:/./g;
sub box {
my ($arg_ptr) = @_;
my $width = $arg_ptr -> { -width};
my $length = $arg_ptr -> { -length};
my $value = $arg_ptr -> { -value};
my $gap = $arg_ptr -> { -gap};
foreach my $i (0..$length - 1) {
foreach my $j (0..$width - 1) { print PGM $value . ' ' ; }
foreach my $g (0..$gap-1 ) { print PGM '00 ' ; }
foreach my $j (0..$width - 1) { print PGM $value . ' ' ; }
print PGM "\n";
}
}
sub main() {
my $base_name = $0;
$base_name .= '-'. $VERSION;
my $pgm_name .= $base_name . '.pgm';
my $bmp_name .= $base_name . '.bmp';
open(PGM, "> $pgm_name") || die "problem opening file to write: $!\n";
print $pgm_name,"\n"; # See below after __END__ line
my $max = 127;
my $width = 100;
my $length = 50;
my $gap = 25;
my $totalW = $width * 2 + $gap;
my $totalH = $length * 4 + $max * 2;
print PGM "P2\n";
printf( PGM " # %2d x %d bitmap PGM format\n", $totalW, $totalH);
print PGM $totalW, ' ' . $totalH . "\n";
print PGM $max . "\n";
box ({ -length => $length, -width => $width, -value => $max, -gap=> $gap});
box ({ -length => $length, -width => $width, -value => 0 , -gap=> $gap});
foreach my $value (0..$max - 1) {
foreach my $repeat (0,1) {
foreach my $j (0..$width - 1) { print PGM $value . ' ' ; }
foreach my $g (0..$gap - 1) { print PGM '00 ' ; }
foreach my $j (0..$width - 1) { print PGM $max - $value . ' ' ; }
}
print PGM "\n";
}
box ({ -length => $length, -width => $width, -value => 0 , -gap=> $gap});
box ({ -length => $length, -width => $width, -value => $max, -gap=> $gap});
system ("convert $pgm_name $bmp_name") && die "conversion problem: $!\n";
}
main();
__END__
feh `perl 225x456`
; please note I have copy in ~/.emacs-sub/time-stamp-setup.el
(require 'time-stamp)
(add-hook 'write-file-hooks 'time-stamp)
(setq time-stamp-active t)
;; (setq time-stamp-time-zone "UTC")
(setq time-stamp-time-zone nil)
(setq time-stamp-format "%04y-%02m-%02d %02H:%02M");
(setq time-stamp-start "$VERSION = \"") ;
(setq time-stamp-end "\"") ;
(setq time-stamp-line-limit 20) ; ; default is 8
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2024年02月13日(火) 旧暦 [n年日記] [更新:"2024/02/13 09:51:52"]
#1 [openscad] paraboloid with base plane
STL model For Save As
//////////////////////////////////////////////////////////////////////////////////////////////
// Paraboloid module for OpenScad
//
// Copyright (C) 2013 Lochner, Juergen
// http://www.thingiverse.com/Ablapo/designs
//
// This program is free software. It is
// licensed under the Attribution - Creative Commons license.
// http://creativecommons.org/licenses/by/3.0/
//////////////////////////////////////////////////////////////////////////////////////////////
module paraboloid (y=10, f=5, rfa=0, fc=1, detail=44){
// y = height of paraboloid
// f = focus distance
// fc : 1 = center paraboloid in focus point(x=0, y=f); 0 = center paraboloid on top (x=0, y=0)
// rfa = radius of the focus area : 0 = point focus
// detail = $fn of cone
hi = (y+2*f)/sqrt(2); // height and radius of the cone -> alpha = 45° -> sin(45°)=1/sqrt(2)
x =2*f*sqrt(y/f); // x = half size of parabola
translate([0,0,-f*fc]) // center on focus
rotate_extrude(convexity = 10,$fn=detail ) // extrude paraboild
translate([rfa,0,0]) // translate for fokus area
difference(){
union(){ // adding square for focal area
projection(cut = true) // reduce from 3D cone to 2D parabola
translate([0,0,f*2]) rotate([45,0,0]) // rotate cone 45° and translate for cutting
translate([0,0,-hi/2])cylinder(h= hi, r1=hi, r2=0, center=true, $fn=detail); // center cone on tip
translate([-(rfa+x ),0]) square ([rfa+x , y ]); // focal area square
}
translate([-(2*rfa+x ), -1/2]) square ([rfa+x ,y +1] ); // cut of half at rotation center
}
}
rotate([180,0,0])
paraboloid (y=25,f=100,rfa= 0,fc=0,detail=120);
translate([0,0,-25.5])
cube([1000,1000,1],center = true);
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2024年02月15日(木) 旧暦 [n年日記] [更新:"2024/02/15 03:30:25"]
#1 [openscad] curved star cone
Download STL format, for Save Link as
module base (R, X, theta, z) {
polyhedron(
points = [
[ 0, 0, 0], // 0
[ cos (theta) * X * R,
sin (theta) * X * R, -z], // 1
[ R, 0, -z], // 2
[ cos (theta) * X * R,
- sin (theta) * X * R, -z], // 3
[ 0, 0, 0], // 4
[ cos (theta) * X * R,
- sin (theta) * X * R, z], // 5
[ R, 0, z], // 6
[ cos (theta) * X * R,
sin (theta) * X * R, z], // 7
],
faces = [
[0, 1, 2, 3, 0],
[4, 5, 6, 7, 4],
[0, 1, 7, 4],
[1, 2, 6, 7],
[3, 2, 6, 5],
[0, 3, 5, 4],
]
);
}
delta_y = 5; // step of vertical angle
end = 90; //
R = 100 ; // Radius
X = 0.5; // ratio outer:inner
theta = 40.0; // center angle of 1/8 unit
z = 0.1 ; // hull hackgin thickness
// base shape
module rotate_base( R, X, theta, i) {
rotate([0, - i , 0]) base (R, X, theta * (1 - i/90), z);
}
module rough_shape ( delta_y, R, X ) {
// ----------------------------------
// repeat 8 times over horizontal plane
// ----------------------------------
for ( angle = [0:45:315] ) {
rotate([0, 0, angle])
for ( i = [0:delta_y:end]) {
hull(){
rotate_base( R, X, theta, i-5);
rotate_base( R, X, theta, i+5);
}
}
}
}
outer_boundary = 1000;
intersection() {
rough_shape ( delta_y, R, X );
// to cut the small part below zero-height plane, prepare large box
translate([0,0, outer_boundary/2])
cube (size = outer_boundary, center=true);
}
basement_size = 500; // 500 um
thickness = 1;
cube([ basement_size, basement_size, thickness], center = true);
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2024年02月19日(月) 旧暦 [n年日記] [更新:"2025/05/20 10:20:43"]
#1 [DWL66+][bitmap] another (large, 0.55 x 1.0 m/m) version for contrast curve
For save link as conversion dialog
#!/usr/pkg/bin/perl
use strict;
my($VERSION);
$VERSION = "2024-02-17 23:28" ; # written by emacs time-stamp
## $VERSION .= ' UTC';
$VERSION =~ s/ /-/g;
$VERSION =~ s/:/./g;
sub box {
my ($arg_ptr) = @_;
my $width = $arg_ptr -> { -width};
my $length = $arg_ptr -> { -length};
my $value = $arg_ptr -> { -value};
my $gap = $arg_ptr -> { -gap};
foreach my $i (0..$length - 1) {
foreach my $j (0..$width - 1) { print PGM $value . ' ' ; }
foreach my $g (0..$gap-1 ) { print PGM '00 ' ; }
foreach my $j (0..$width - 1) { print PGM $value . ' ' ; }
print PGM "\n";
}
}
sub main() {
my $max = 127; # bmp light value
my $width = 250;
my $length_posi = 100;
my $length_nega = 100;
my $slant_length = 600;
my $gap = 50;
my $totalW = $width * 2 + $gap;
my $ref_length = $length_posi + $length_nega;
my $totalH = $ref_length * 2 + $slant_length;
my $base_name = 'cross_x2';
$base_name = sprintf("cross_x2-%d-%d", $totalW, $totalH);
$base_name .= '-'. $VERSION;
my $pgm_name .= $base_name . '.pgm';
my $bmp_name .= $base_name . '.bmp';
open(PGM, "> $pgm_name") || die "problem opening file to write: $!\n";
print $bmp_name,"\n"; # See below after __END__ line
print PGM "P2\n";
printf( PGM " # %2d x %d bitmap PGM format\n", $totalW, $totalH);
print PGM $totalW, ' ' . $totalH . "\n";
print PGM $max . "\n";
box ({ -length => $length_posi, -width => $width, -value => $max, -gap=> $gap});
box ({ -length => $length_nega, -width => $width, -value => 0 , -gap=> $gap});
foreach my $value (0..$slant_length - 1) {
my $light_value = int ($value/$slant_length * 128);
## foreach my $repeat (0,1) {
foreach my $j (0..$width - 1) { print PGM $light_value . ' ' ; }
foreach my $g (0..$gap - 1) { print PGM '00 ' ; }
foreach my $j (0..$width - 1) { print PGM $max - $light_value . ' ' ; }
## }
print PGM "\n";
}
box ({ -length => $length_nega, -width => $width, -value => 0 , -gap=> $gap});
box ({ -length => $length_posi, -width => $width, -value => $max, -gap=> $gap});
system ("convert $pgm_name $bmp_name") && die "conversion problem: $!\n";
}
main();
__END__
feh `perl 225x456`
; please note I have copy in ~/.emacs-sub/time-stamp-setup.el
(require 'time-stamp)
(add-hook 'write-file-hooks 'time-stamp)
(setq time-stamp-active t)
;; (setq time-stamp-time-zone "UTC")
(setq time-stamp-time-zone nil)
(setq time-stamp-format "%04y-%02m-%02d %02H:%02M");
(setq time-stamp-start "$VERSION = \"") ;
(setq time-stamp-end "\"") ;
(setq time-stamp-line-limit 20) ; ; default is 8
( Post message... )
最近の日記
2024年11月14日
・DWL66+ 2018 405 nm
2024年02月19日
・another (large, 0.55 x 1.0 m/m) version for contrast curve
2024年02月15日
・curved star cone
2024年02月13日
・paraboloid with base plane
2024年02月09日
・bit map format for contrast curve