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379 lines
13 KiB
OpenSCAD
379 lines
13 KiB
OpenSCAD
/* Version 3
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Added support for font selection (default is Letters.dxf)
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Added WriteCube module
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Added Rotate for text (rotates on the plane of the text)
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Added writesphere
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Added space= (spacing between characters in char widths) def=1
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Added writecylinder()
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By Harlan Martin
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harlan@sutlog.com
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January 2012
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(The file TestWrite.scad gives More usage examples)
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(This module requires the file Letters.dxf to reside in the same folder)
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(The file Letters.dfx was created with inkscape..Each letter is in its own layer)
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(This module seperates each letter in the string and imports it from Letters.dfx)
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*/
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pi=3.1415926535897932384626433832795028841971693993751058209;
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pi2=pi*2;
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// These control the default values for write() writesphere() writecube()
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// if the parameters are not included in the call. Feel free to set your own
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// defaults.
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//default settings
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center=false;
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h = 4; //mm letter height
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t = 1; //mm letter thickness
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space =1; //extra space between characters in (character widths)
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rotate=0; // text rotation (clockwise)
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font = "Letters.dxf"; //default for aditional fonts
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// write cube defaults
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face = "front"; // default face (top,bottom,left,right,back,front)
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up =0; //mm up from center on face of cube
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down=0;
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right =0; //mm left from center on face of cube
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left=0;
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// write sphere defaults
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rounded=false; //default for rounded letters on writesphere
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north=0; // intial text position (I suggest leave these 0 defaults)
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south=0;
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east=0;
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west=0;
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spin=0;
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// writecylinder defaults
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middle=0; //(mm toward middle of circle)
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ccw=false; //write on top or bottom in a ccw direction
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r1=0; //(not implimented yet)
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r2=0; //(not implimented yet)
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// Contact me if your interested in how to make your own font files
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// Its tedious and time consuming, but not very hard
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module writecylinder(text,where,radius,height){
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wid=(.125* h *5.5 * space);
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widall=wid*(len(text)-1)/2;
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//angle that measures width of letters on sphere
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function NAngle(radius)=(wid/(pi2*radius))*360;
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//angle of half width of text
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function mmangle(radius)=(widall/(pi2*radius)*360);
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if ((face=="top")||(face=="bottom") ){
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if (face=="top" ){
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if (center==true){
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writecircle(text,where+[0,0,height/2],radius-h,rotate=rotate,font=font,h=h,t=t,
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space=space,east=east,west=west,middle=middle,ccw=ccw);
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}else{
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writecircle(text,where+[0,0,height],radius-h,rotate=rotate,font=font,h=h,t=t,
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space=space,east=east,west=west,middle=middle,ccw=ccw);
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}
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}else{
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rotate(180,[1,0,0])
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if (center==true){
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writecircle(text,where+[0,0,height/2],radius-h,rotate=rotate,font=font,h=h,t=t,
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space=space,east=east,west=west,middle=middle,ccw=ccw);
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}else{
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writecircle(text,where+[0,0,0],radius-h,rotate=rotate,font=font,h=h,t=t,
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space=space,east=east,west=west,middle=middle,ccw=ccw);
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}
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}
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}else{
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// if (radius>0){
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if (center==true) {
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rotate(-mmangle(radius)*(1-abs(rotate)/90),[0,0,1])
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translate(where)
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writethecylinder(text,where,radius,height,r1=radius,r2=radius,h=h,
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rotate=rotate,t=t,font=font,face=face,up=up,down=down,
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east=east,west=west,center=center,space=space,rounded=rounded);
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} else{
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rotate(-mmangle(radius)*(1-abs(rotate)/90),[0,0,1])
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translate(where+[0,0,height/2])
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writethecylinder(text,where,radius,height,r1=radius,r2=radius,h=h,
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rotate=rotate,t=t,font=font,face=face,up=up,down=down,
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east=east,west=west,center=center,space=space,rounded=rounded);
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}
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// the remarked out code is for cone shaped cylinders (not complete)
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// }else{
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// if (center==true) {
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// rotate(-mmangle(radius)*(1-abs(rotate)/90),[0,0,1])
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// translate(where)
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// writethecylinder(text,where,radius,height,r1=r1,r2=r2,h=h,
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// rotate=rotate,t=t,font=font,face=face,up=up,down=down,
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// east=east,west=west,center=center,space=space,rounded=rounded);
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// } else{
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// rotate(-mmangle(radius)*(1-abs(rotate)/90),[0,0,1])
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// translate(where+[0,0,height/2])
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// writethecylinder(text,where,radius,height,r1=r1,r2=r2,h=h,
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// rotate=rotate,t=t,font=font,face=face,up=up,down=down,
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// east=east,west=west,center=center,space=space,rounded=rounded);
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// }
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// }
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}
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}
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module writecircle(text,where,radius){
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wid=(.125* h *5.5 * space);
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widall=wid*(len(text)-1)/2;
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//angle that measures width of letters on sphere
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function NAngle(radius)=(wid/(pi2*radius))*360;
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//angle of half width of text
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function mmangle(radius)=(widall/(pi2*radius)*360);
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if (ccw==true){
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rotate(-rotate+east-west,[0,0,1]){
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rotate(-mmangle(radius-middle),[0,0,1]){
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translate(where)
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for (r=[0:len(text)-1]){
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rotate(-90+r*NAngle(radius-middle),[0,0,1]) // bottom out=-270+r
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translate([radius-middle,0,0])
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//rotate(90,[1,0,0])
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//rotate(90,[0,1,0])
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rotate(-270,[0,0,1]) // flip text (botom out = -270)
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write(text[r],center=true,h=h,t=t,font=font);
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}
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}
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}
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}else{
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rotate(-rotate-east+west,[0,0,1]){
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rotate(mmangle(radius-middle),[0,0,1]){
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translate(where)
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for (r=[0:len(text)-1]){
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rotate(90-r*NAngle(radius-middle),[0,0,1]) // bottom out=-270+r
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translate([radius-middle,0,0])
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//rotate(90,[1,0,0])
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//rotate(90,[0,1,0])
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rotate(270,[0,0,1]) // flip text (botom out = -270)
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write(text[r],center=true,h=h,t=t,font=font);
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}
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}
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}
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}
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}
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module writethecylinder(text,where,radius,height,r1,r2){
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wid=(.125* h *5.5 * space);
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widall=wid*(len(text)-1)/2;
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//angle that measures width of letters on sphere
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function NAngle(radius)=(wid/(pi2*radius))*360*(1-abs(rotate)/90);
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//angle of half width of text
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function mmangle(radius)=(widall/(pi2*radius)*360);
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translate([0,0,up-down])
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rotate(east-west,[0,0,1])
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for (r=[0:len(text)-1]){
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rotate(-90+(r*NAngle(radius)),[0,0,1])
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translate([radius,0,-r*((rotate)/90*wid)+(len(text)-1)/2*((rotate)/90*wid)])
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rotate(90,[1,0,0])
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rotate(90,[0,1,0])
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write(text[r],center=true,h=h,rotate=rotate,t=t,font=font);
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//echo("zloc=",height/2-r*((rotate)/90*wid)+(len(text)-1)/2*((rotate)/90*wid));
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}
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}
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module writesphere(text,where,radius){
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wid=(.125* h *5.5 * space);
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widall=wid*(len(text)-1)/2;
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echo("-----------------",widall,wid,mmangle(radius));
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//angle that measures width of letters on sphere
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function NAngle(radius)=(wid/(pi2*radius))*360;
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//angle of half width of text
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function mmangle(radius)=(widall/(pi2*radius)*360);
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rotate(east-west,[0,0,1]){
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rotate(south-north,[1,0,0]){
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rotate(spin,[0,1,0]){
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rotate(-mmangle(radius),[0,0,1]){
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if ( rounded== false ){
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translate(where)
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for (r=[0:len(text)-1]){
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rotate(-90+r*NAngle(radius),[0,0,1])
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translate([radius,0,0])
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rotate(90,[1,0,0])
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rotate(90,[0,1,0])
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write(text[r],center=true,h=h,rotate=rotate,t=t,font=font);
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}
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}else{
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difference(){
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translate(where)
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for (r=[0:len(text)-1]){
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rotate(-90+r*NAngle(radius),[0,0,1])
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translate([radius,0,0])
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rotate(90,[1,0,0])
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rotate(90,[0,1,0])
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write(text[r],center=true,h=h,rotate=rotate,t=t*2+h,font=font);
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}
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difference(){ //rounded outside
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sphere(radius+(t*2+h)*2);
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sphere(radius+t/2);
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}
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sphere(radius-t/2); // rounded inside for indented text
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}
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}
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}
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}}}
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}
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module writecube(text,where,size){
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if (str(size)[0] != "["){
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// its a square cube (size was not a matrix so make it one)
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writethecube(text,where,[size,size,size],h=h,rotate=rotate,space=space,
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t=t,font=font,face=face,up=up,down=down,right=right,left=left);
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}else{
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// its not square
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writethecube(text,where,size,h=h,rotate=rotate,space=space,
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t=t,font=font,face=face,up=up,down=down,right=right,left=left);
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}
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}
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// I split the writecube module into 2 pieces.. easier to add features later
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module writethecube(text,where,size){
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if (face=="front") {
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translate([where[0]+right-left,where[1]-size[1]/2,where[2]+up-down])
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rotate(90,[1,0,0])
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write(text,center=true,h=h,rotate=rotate,t=t,font=font);
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}
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if (face=="back") {
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translate([where[0]+right-left,where[1]+size[1]/2,where[2]+up-down])
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rotate(90,[1,0,0]) // rotate around the x axis
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rotate(180,[0,1,0]) // rotate around the y axis (z before rotation)
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write(text,center=true,h=h,rotate=rotate,t=t,font=font);
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}
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if (face=="left") {
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translate([where[0]-size[0]/2,where[1]-right+left,where[2]+up-down ])
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rotate(90,[1,0,0]) // rotate around the x axis
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rotate(90,[0,-1,0]) // rotate around the y axis (z before rotation)
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write(text,center=true,h=h,rotate=rotate,t=t,font=font);
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}
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if (face=="right") {
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translate([where[0]+size[0]/2,where[1]+right-left,where[2] +up-down])
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rotate(90,[1,0,0]) // rotate around the x axis
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rotate(90,[0,1,0]) // rotate around the y axis (z before rotation)
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write(text,center=true,h=h,rotate=rotate,t=t,font=font);
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}
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if (face=="top") {
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translate([where[0]+right-left,where[1]+up-down,where[2]+size[2]/2 ])
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write(text,center=true,h=h,rotate=rotate,t=t,font=font);
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}
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if (face=="bottom") {
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translate([where[0]+right-left,where[1]-up+down,where[2]-size[2]/2 ])
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rotate(180,[1,0,0])
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write(text,center=true,h=h,rotate=rotate,t=t,font=font);
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}
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}
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module write(word){
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echo (h);
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echo (word);
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echo ("There are " ,len(word) ," letters in this string");
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// echo ("The second letter is ",word[1]);
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// echo (str(word[0],"_"));
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rotate(rotate,[0,0,-1]){
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for (r = [0:len(word)]){ // count off each character
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// if the letter is lower case, add an underscore to the end for file lookup
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if ((word[r] == "a" ) || (word[r]== "b") || (word[r]== "c")
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|| (word[r]== "d") || (word[r]== "e") || (word[r]== "f")
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|| (word[r]== "g") || (word[r]== "h") || (word[r]== "i")
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|| (word[r]== "j") || (word[r]== "k") || (word[r]== "l")
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|| (word[r]== "m") || (word[r]== "n") || (word[r]== "o")
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|| (word[r]== "p") || (word[r]== "q") || (word[r]== "r")
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|| (word[r]== "s") || (word[r]== "t") || (word[r]== "u")
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|| (word[r]== "v") || (word[r]== "w") || (word[r]== "x")
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|| (word[r]== "y" )|| (word[r]== "z")){
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if (center == true) {
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translate([0,-h/2,0]){
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scale([.125*h,.125*h,t]){
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translate([ (-len(word)*5.5*space/2) + (r*5.5*space),0,0])
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linear_extrude(height=1,convexity=10,center=true){
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import(file = font,layer=str(word[r],"_"));
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}
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}
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}
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}else{
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translate([0,0,t/2]){
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scale([.125*h,.125*h,t]){
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translate([r*5.5*space,0,0])
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linear_extrude(height=1,convexity=10,center=true){
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import(file = font,layer=str(word[r],"_"));
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}
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}
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}
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}
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}else{
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if (center == true) {
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translate([0,-h/2,0]){
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scale([.125*h,.125*h,t]){
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translate([ (-len(word)*5.5*space/2) + (r*5.5*space),0,0])
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linear_extrude(height=1,convexity=10,center=true){
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import(file = font,layer=str(word[r]));
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}
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}
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}
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}else{
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translate([0,0,t/2]){
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scale([.125*h,.125*h,t]){
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translate([r*5.5*space,0,0])
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linear_extrude(height=1,convexity=10,center=true){
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import(file = font,layer=str(word[r]));
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}
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}
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}
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}
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}
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}
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}
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}
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/*writecylinder test
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translate([0,0,0])
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%cylinder(r=20,h=40,center=true);
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color([1,0,0])
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writecylinder("rotate=90",[0,0,0],20,40,center=true,down=0,rotate=90);
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writecylinder("rotate = 30,east = 90",[0,0,0],20,40,center=true,down=0,rotate=30,east=90);
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writecylinder("ccw = true",[0,0,0],20,40,center=true,down=0,face="top",ccw=true);
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writecylinder("middle = 8",[0,0,0],20,40,h=3,center=true,down=0,face="top",middle=8);
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writecylinder("face = top",[0,0,0],20,40,center=true,down=0,face="top");
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writecylinder("east=90",[0,0,0],20,40,h=3,center=true,down=0,face="top",east=90);
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writecylinder("west=90",[0,0,0],20,40,h=3,center=true,down=0,face="top",ccw=true,west=90);
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writecylinder("face = bottom",[0,0,0],20,40,center=true,down=0,face="bottom");
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*/
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/*writesphere test
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sphere(20);
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color([1,0,0])
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writesphere("Hello World",[0,0,0],20,t=1,h=6);
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*/
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/* writecube test
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translate([30,30,30])
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cube([10,15,30],center=true);
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write("hello",center=true,rotate =30);
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color([1,0,0])
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writecube( "front",[30,30,30],[10,15,30],h=5,rotate=-90);
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color([0,1,0])
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writecube( "back",[30,30,30],size=[10,15,30],h=5,face="back",rotate=90,t=4);
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color([0,0,1])
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writecube( "left",[30,30,30],[10,15,30],h=5,face="left",up=5);
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color([1,1,0])
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writecube( "right",where=[30,30,30],size=[10,15,30],h=5,face="right",rotate=55);
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color([1,0,1])
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writecube( "top",where=[30,30,30],size=[10,15,30],h=5,face="top");
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color([1,1,1])
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writecube( "bttm",where=[30,30,30],size=[10,15,30],h=5,face="bottom",rotate=90);
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*/
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