140 lines
5.4 KiB
OpenSCAD
140 lines
5.4 KiB
OpenSCAD
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//Draw text
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scale([4,4,4]) drawtext("Hello World!");
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//Draw character set
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//scale([2,2,2]) drawtext(" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}");
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module drawtext(text) {
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//Characters
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chars = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}";
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//Chracter table defining 5x7 characters
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//Adapted from: http://www.geocities.com/dinceraydin/djlcdsim/chartable.js
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char_table = [ [ 0, 0, 0, 0, 0, 0, 0],
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[ 4, 0, 4, 4, 4, 4, 4],
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[ 0, 0, 0, 0,10,10,10],
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[10,10,31,10,31,10,10],
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[ 4,30, 5,14,20,15, 4],
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[ 3,19, 8, 4, 2,25,24],
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[13,18,21, 8,20,18,12],
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[ 0, 0, 0, 0, 8, 4,12],
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[ 2, 4, 8, 8, 8, 4, 2],
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[ 8, 4, 2, 2, 2, 4, 8],
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[ 0, 4,21,14,21, 4, 0],
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[ 0, 4, 4,31, 4, 4, 0],
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[ 8, 4,12, 0, 0, 0, 0],
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[ 0, 0, 0,31, 0, 0, 0],
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[12,12, 0, 0, 0, 0, 0],
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[ 0,16, 8, 4, 2, 1, 0],
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[14,17,25,21,19,17,14],
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[14, 4, 4, 4, 4,12, 4],
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[31, 8, 4, 2, 1,17,14],
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[14,17, 1, 2, 4, 2,31],
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[ 2, 2,31,18,10, 6, 2],
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[14,17, 1, 1,30,16,31],
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[14,17,17,30,16, 8, 6],
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[ 8, 8, 8, 4, 2, 1,31],
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[14,17,17,14,17,17,14],
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[12, 2, 1,15,17,17,14],
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[ 0,12,12, 0,12,12, 0],
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[ 8, 4,12, 0,12,12, 0],
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[ 2, 4, 8,16, 8, 4, 2],
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[ 0, 0,31, 0,31, 0, 0],
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[16, 8, 4, 2, 4, 8,16],
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[ 4, 0, 4, 2, 1,17,14],
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[14,21,21,13, 1,17,14],
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[17,17,31,17,17,17,14],
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[30,17,17,30,17,17,30],
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[14,17,16,16,16,17,14],
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[30,17,17,17,17,17,30],
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[31,16,16,30,16,16,31],
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[16,16,16,30,16,16,31],
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[15,17,17,23,16,17,14],
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[17,17,17,31,17,17,17],
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[14, 4, 4, 4, 4, 4,14],
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[12,18, 2, 2, 2, 2, 7],
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[17,18,20,24,20,18,17],
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[31,16,16,16,16,16,16],
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[17,17,17,21,21,27,17],
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[17,17,19,21,25,17,17],
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[14,17,17,17,17,17,14],
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[16,16,16,30,17,17,30],
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[13,18,21,17,17,17,14],
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[17,18,20,30,17,17,30],
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[30, 1, 1,14,16,16,15],
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[ 4, 4, 4, 4, 4, 4,31],
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[14,17,17,17,17,17,17],
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[ 4,10,17,17,17,17,17],
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[10,21,21,21,17,17,17],
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[17,17,10, 4,10,17,17],
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[ 4, 4, 4,10,17,17,17],
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[31,16, 8, 4, 2, 1,31],
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[14, 8, 8, 8, 8, 8,14],
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[ 0, 1, 2, 4, 8,16, 0],
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[14, 2, 2, 2, 2, 2,14],
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[ 0, 0, 0, 0,17,10, 4],
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[31, 0, 0, 0, 0, 0, 0],
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[ 0, 0, 0, 0, 2, 4, 8],
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[15,17,15, 1,14, 0, 0],
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[30,17,17,25,22,16,16],
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[14,17,16,16,14, 0, 0],
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[15,17,17,19,13, 1, 1],
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[14,16,31,17,14, 0, 0],
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[ 8, 8, 8,28, 8, 9, 6],
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[14, 1,15,17,15, 0, 0],
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[17,17,17,25,22,16,16],
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[14, 4, 4, 4,12, 0, 4],
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[12,18, 2, 2, 2, 6, 2],
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[18,20,24,20,18,16,16],
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[14, 4, 4, 4, 4, 4,12],
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[17,17,21,21,26, 0, 0],
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[17,17,17,25,22, 0, 0],
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[14,17,17,17,14, 0, 0],
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[16,16,30,17,30, 0, 0],
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[ 1, 1,15,19,13, 0, 0],
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[16,16,16,25,22, 0, 0],
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[30, 1,14,16,15, 0, 0],
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[ 6, 9, 8, 8,28, 8, 8],
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[13,19,17,17,17, 0, 0],
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[ 4,10,17,17,17, 0, 0],
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[10,21,21,17,17, 0, 0],
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[17,10, 4,10,17, 0, 0],
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[14, 1,15,17,17, 0, 0],
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[31, 8, 4, 2,31, 0, 0],
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[ 2, 4, 4, 8, 4, 4, 2],
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[ 4, 4, 4, 4, 4, 4, 4],
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[ 8, 4, 4, 2, 4, 4, 8] ];
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//Binary decode table
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dec_table = [ "00000", "00001", "00010", "00011", "00100", "00101",
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"00110", "00111", "01000", "01001", "01010", "01011",
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"01100", "01101", "01110", "01111", "10000", "10001",
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"10010", "10011", "10100", "10101", "10110", "10111",
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"11000", "11001", "11010", "11011", "11100", "11101",
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"11110", "11111" ];
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//Process string one character at a time
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for(itext = [0:len(text)-1]) {
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//Convert character to index
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ichar = search(text[itext],chars,1)[0];
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//Decode character - rows
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for(irow = [0:6]) {
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//Select value to draw from table
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val = dec_table[char_table[ichar][irow]];
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//Decode character - cols
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for(icol = [0:4]) {
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// Retrieve bit to draw
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bit = search(val[icol],"01",1)[0];
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if(bit) {
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//Output cube
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translate([icol + (6*itext), irow, 0])
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cube([1.0001,1.0001,1]);
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}
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}
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}
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}
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}
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