minor gui format change, lib/vent.scad replaced

lib/vent.scad

@@ -0,0 +1,63 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    vent_panel_hex(x, y, thick, cell_size, cell_spacing, border, borders);
+
+*/
+
+
+/*
+           NAME: vent_panel_hex
+    DESCRIPTION: creates hex vent panel
+           TODO: none
+
+          USAGE: vent_panel_hex(x, y, thick, cell_size=8, cell_spacing=3, border=3, borders="default")
+
+                                x = #rows
+                                y = #columns
+                            thick = pattern thickness
+                        cell_size = size of hex
+                     cell_spacing = space between hex
+                           border = size of borber
+                          borders = "none", "default"
+
+*/
+
+module vent_panel_hex(x, y, thick, cell_size=8, cell_spacing=3, border=3, borders="default") {
+    hole = 3.2;
+    xb = (borders == "y" || borders == "none") ? cell_spacing : border;
+    yb = (borders == "x" || borders == "none") ? cell_spacing : border;
+    hxb = max(yb/2, cell_spacing + hole);
+    hyb = max(xb/2, cell_spacing + hole);
+
+    cells_x = floor((2*(x-2*xb-cell_size)/(cell_size+cell_spacing))+1);
+    cells_y = floor(((sqrt(12)*(y-2*yb)-4*cell_size)/(3*(cell_size+cell_spacing)))+1);
+    csx = cell_size + (cells_x-1)*(cell_size+cell_spacing)/2;
+    csy = sqrt(4/3)*cell_size + ((cell_size+cell_spacing)*sqrt(3/4)*(cells_y-1));
+
+    difference() {
+        color("grey",1) slab([x,y,thick],2);
+        color("grey",1) translate([(x-csx)/2,(y-csy)/2,-1])
+            vent_hex(cells_x, cells_y, thick+3, cell_size, cell_spacing, "horizontal");
+        if (borders != "none") {
+            color("grey",1) translate([    hxb,     hyb, -1]) cylinder(d=hole, h=thick+3);
+            color("grey",1) translate([x - hxb,     hyb, -1]) cylinder(d=hole, h=thick+3);
+            color("grey",1) translate([    hxb, y - hyb, -1]) cylinder(d=hole, h=thick+3);
+            color("grey",1) translate([x - hxb, y - hyb, -1]) cylinder(d=hole, h=thick+3);
+        }
+    }
+}

sbc_case_builder.scad

@@ -159,7 +159,6 @@ accessory_name = "none"; // ["none", "hk_uart", "c4_shell_boombox", "c4_desktop_
 text_color = "Green"; // [Green, Black, Dimgrey, White, Yellow, Orange, Red, DarkbBlue]
 // sbc information text font
 text_font = "Nimbus Mono PS"; // [Nimbus Mono PS, Liberation Mono, Noto Sans Mono]
-
 /* [SBC Top Standoff Global Settings] */
 // enable case top standoffs
 sbc_top_standoffs = true;

sbc_case_builder_library.scad

@@ -51,3 +51,4 @@ include <./lib/oem_adafruit.scad>;
 include <./lib/oem_hk.scad>;
 include <./lib/oem_rpi.scad>;
 include <./lib/standoff.scad>;
+include <./lib/vent.scad>;