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Added sheet with checkerboard texture to simulate carbon fiber.

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This commit is contained in:
Martin Budden 2020-12-13 09:08:21 +00:00
parent ec891c8013
commit 85cb54ef31
3 changed files with 128 additions and 13 deletions
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20
tests/sheets.scad
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@ -27,5 +27,25 @@ module sheets()
layout([for(s = sheets) width], 5)
render_sheet(sheets[$i]) sheet(sheets[$i], width, width, 2);
module test2() {
render_sheet(CF3) sheet(CF3, width, width, 2);
translate([40,0,0])
render_2D_sheet(CF3) sheet_2D(CF3, width, width, 2);
translate([80,0,0])
sheet(CF3, width, width, 2);
translate([120,0,0])
sheet_2D(CF3, width, width, 2);
translate([160,0,0])
render_sheet(MDF6) sheet(MDF6, width, width, 2);
translate([200,0,0])
render_2D_sheet(MDF6) sheet_2D(MDF6, width, width, 2);
translate([240,0,0])
sheet(MDF6, width, width, 2);
translate([280,0,0])
sheet_2D(MDF6, width, width, 2);
}
if($preview)
sheets();
//test2();

105
vitamins/sheet.scad
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@ -35,6 +35,8 @@ include <../utils/core/core.scad>
function sheet_thickness(type) = type[2]; //! Thickness
function sheet_colour(type) = type[3]; //! Colour
function sheet_is_soft(type) = type[4]; //! Is soft enough for wood screws
function sheet_is_woven(type) = !is_undef(type[5]); //! Is a woven sheet, eg carbon fiber
function sheet_colour2(type) = is_undef(type[7]) ? sheet_colour(type) * 0.8 : type[7]; //! Second colour for a woven sheet
module corner(r) {
if(r > 0)
@ -50,10 +52,7 @@ module corner(r) {
square(1, center = true);
}
module sheet_2D(type, w, d, corners = [0, 0, 0, 0]) { //! 2D sheet template with specified size and optionally rounded corners
t = sheet_thickness(type);
vitamin(str("sheet(", type[0], ", ", w, ", ", d, arg(corners, [0, 0, 0, 0]), "): ", type[1], " ", round(w), "mm x ", round(d), "mm x ", t, "mm"));
module corner_hull(w, d, corners) {
c = is_list(corners) ? corners : corners * [1, 1, 1, 1];
hull() {
@ -74,16 +73,108 @@ module sheet_2D(type, w, d, corners = [0, 0, 0, 0]) { //! 2D sheet template with
}
}
module sheet_2D(type, w, d, corners = [0, 0, 0, 0]) { //! 2D sheet template with specified size and optionally rounded corners
t = sheet_thickness(type);
vitamin(str("sheet(", type[0], ", ", w, ", ", d, arg(corners, [0, 0, 0, 0]), "): ", type[1], " ", round(w), "mm x ", round(d), "mm x ", t, "mm"));
if (sheet_is_woven(type)) {
if (is_undef($sheet_woven_positive)) {
// not being called from within render_2D_sheet, so do both colours
color(sheet_colour(type))
let($sheet_woven_positive = true)
woven_sheet_2D(type, w, d, corners);
color(sheet_colour2(type))
let($sheet_woven_positive = false)
woven_sheet_2D(type, w, d, corners);
} else {
// being called from within render_2D_sheet
woven_sheet_2D(type, w, d, corners);
}
} else {
color(sheet_colour(type))
corner_hull(w, d, corners);
}
}
module sheet(type, w, d, corners = [0, 0, 0, 0]) //! Draw specified sheet
if (sheet_is_woven(type) && is_undef($sheet_woven_positive)) {
// not being called from within render_3D_sheet, so do both colours
color(sheet_colour(type))
linear_extrude(sheet_thickness(type), center = true)
let($sheet_woven_positive = true)
woven_sheet_2D(type, w, d, corners);
color(sheet_colour2(type))
linear_extrude(sheet_thickness(type), center = true)
let($sheet_woven_positive = false)
woven_sheet_2D(type, w, d, corners);
} else {
color(sheet_colour(type))
linear_extrude(sheet_thickness(type), center = true)
sheet_2D(type, w, d, corners);
}
module render_sheet(type, colour = false) //! Render a sheet in the correct colour after holes have been subtracted
module render_sheet(type, colour = false, colour2 = false) { //! Render a sheet in the correct colour after holes have been subtracted
color(colour ? colour : sheet_colour(type))
render() children();
render()
let($sheet_woven_positive = true)
children();
module render_2D_sheet(type, colour = false) //! Extrude a 2D sheet template and give it the correct colour
if (sheet_is_woven(type))
color(colour2 ? colour2 : sheet_colour2(type))
render()
let($sheet_woven_positive = false)
children();
}
module render_2D_sheet(type, colour = false, colour2 = false) { //! Extrude a 2D sheet template and give it the correct colour
let($dxf_colour = colour ? colour : sheet_colour(type))
color($dxf_colour)
let($sheet_woven_positive = true)
linear_extrude(sheet_thickness(type), center = true)
children();
if (sheet_is_woven(type))
color(colour2 ? colour2 : sheet_colour2(type))
let($sheet_woven_positive = false)
linear_extrude(sheet_thickness(type), center = true)
children();
}
module woven_sheet_2D(type, w, d, corners = [0, 0, 0, 0], warp = 2, weft) {//! Create a woven 2D sheet with specified size, colours, warp and weft
size = [w, d];
weft = weft ? weft : warp;
warp_doublet_count = floor(size.x / (2 * warp)) + 1;
module layer(weft) {
for (x = [0 : warp_doublet_count - 1])
translate([2 * x * warp, 0, 0])
square([warp, weft]);
}
module positive() {
intersection() {
translate([-size.x / 2, -size.y / 2]) {
weft_count = floor(size.y / weft) + 1;
for (y = [0 : weft_count - 1])
translate([warp * (y % 2), weft * y, 0])
layer(weft);
}
corner_hull(w, d, corners);
}
}
module negative() {
difference() {
corner_hull(size.x, size.y, corners);
positive();
}
}
if (is_undef($sheet_woven_positive) || $sheet_woven_positive==true)
positive();
else
negative();
}

8
vitamins/sheets.scad
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@ -22,7 +22,7 @@
//
//
// [ Code, Description, Thickness, Color, Soft]
// [ Code, Description, Thickness, Color, Soft, Warp, Weft, Color2]
//
mdf_colour = "#BEA587"; // sampled from a photo
@ -45,7 +45,11 @@ Foam20 = [ "Foam20", "Foam sponge", 20,[0.3, 0.3, 0.3, 1 ],
AL6 = [ "AL6", "Aluminium tooling plate", 6, [0.9, 0.9, 0.9, 1 ], false];
AL8 = [ "AL8", "Aluminium tooling plate", 8, [0.9, 0.9, 0.9, 1 ], false];
Steel06 = [ "Steel06", "Sheet mild steel", 0.6,"silver" , false];
CF1 = [ "CF1", "Sheet carbon fiber", 1, grey(30), false, 2, 2, grey(25)];
CF2 = [ "CF2", "Sheet carbon fiber", 2, grey(30), false, 2, 2, grey(25)];
CF3 = [ "CF3", "Sheet carbon fiber", 3, grey(30), false, 2, 2, grey(25)];
sheets = [MDF6, MDF10, MDF12, MDF19, PMMA2, PMMA3, PMMA6, PMMA8, PMMA10, glass2, DiBond, DiBond6, Cardboard, FoilTape, Foam20, AL6, AL8, Steel06];
sheets = [MDF6, MDF10, MDF12, MDF19, PMMA2, PMMA3, PMMA6, PMMA8, PMMA10, glass2, DiBond, DiBond6, Cardboard, FoilTape, Foam20, AL6, AL8, Steel06, CF1, CF2, CF3];
use <sheet.scad>