# We generate a physical indication of which commit was used.
#
# We provide for scaling factors with dynamic variables:
-# $Commitid_pixelsz if not set, we use 0.4 } multiplied
+# $Commitid_pixelsz if not set, we use 0.8 } multiplied
# $Commitid_scale if not set, we use 1.0 } together
-# $Commitid_depth if not set, we use xy pixel size from above
+# $Commitid_depth if not set, we use xy pixel size from above / 2
# $Commitid_depth_scale if not set, we use 1.0 (multiplies depth above)
#
# For each form we have
#
# module Commitid_Form_2D() { ... }
# module Commitid_Form() { ... }
+# function Commitid_Form_sz() => [ x, y ]
#
# These have their origin in the bottom left corner. The 3D model
# is a positive, has its origin halfway through, and is twice the
# Tiny8:
# git rev-list --first-parent --count HEAD
# typically 3-4 characters but we allow for up to 6
+# padded with zeroes; if too long we reduce mod 10^n
# eg
# Tiny4 1070
#
# Tiny4Q 10
# 70
#
-# Git4
-# Git6
-# Git8
-# git-rev-parse HEAD
+# Git4 Git4Q
+# Git6 Git6Q
+# Git8 Git8Q
+# git-rev-parse HEAD (prefix of requested length)
# eg
# Git6 82f2a2
p <<'END';
// *** AUTOGENERATED - DO NOT EDIT *** //
function Commitid_pixelsz() =
- ($Commitid_pixelsz ? $Commitid_pixelsz : 0.4) *
+ ($Commitid_pixelsz ? $Commitid_pixelsz : 0.8) *
($Commitid_scale ? $Commitid_scale : 1.0);
function Commitid_depth() =
- ($Commitid_depth ? $Commitid_depth : Commitid_pixelsz()) *
+ ($Commitid_depth ? $Commitid_depth : Commitid_pixelsz()/2) *
($Commitid_depth_scale ? $Commitid_depth_scale : 1.0);
function Commitid__scale() =
- Commitid_pixelsz() / 0.1;
+ Commitid_pixelsz() / 0.2;
END
sub chrmodname ($) {
p "module ${modb}_2D(){\n";
p " scale(Commitid__scale()){\n";
my $y = @lines;
+ my $cols = 1;
foreach my $line (@lines) {
$y--;
my $x = 0;
$x, $y, chrmodname $chr;
$x++;
}
+ $cols = $x if $x > $cols;
}
p " }\n";
p "}\n";
p " d=Commitid_depth();\n";
p " translate([0,0,-d]) linear_extrude(height=d*2) ${modb}_2D();\n";
p "}\n";
+ p sprintf "function %s_sz() = Commitid__scale() * 0.1 * [ %d, %d ];\n",
+ $modb, 2 * ($cols * 4 - 1), 2 * (@lines * 6 - 1);
}
our @demo;