647 lines
30 KiB
OpenSCAD
Executable file
647 lines
30 KiB
OpenSCAD
Executable file
/* text on ....
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This is a rework of version 3 of write.scad to use the new OpenSCAD internal text() primitive.
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All credit to Harlan Martin (harlan@sutlog.com) for his great effort on the original.
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Great thanks to t-paul (and the OpenSCAD dev team) on adding the new text() primitive.
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*/
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/*
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The arguments to be provided for each function are explictly in the modules.
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All modules take close to all the arguments to text() [Not all features are supported in all text_on_object() modules though -- try them out warnings will be given if it is not supported]
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text() params:
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t
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size
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spacing
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font
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direction -- ltr, ttb, btt or rtl
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language
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script
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halign -- left, right or center
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valign -- baseline, bottom, top or center
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All modules also take the additional arguments:
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extrusion_height = depth of the letter, i.e. how far it sits proud
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rotate
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center //center the text at the location it is being written (NOT that the object is centered)
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ALL faux-objects that the text is applied to have center=true
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TODO: object_center=true/false (already done for cylinder)
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The above arguemnts can be seen in text_extrude() as all modules call that module evetually (often multiple times).
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locn_vector -- Where the faux-object has been translated to. TODO: Rename object to translate_vector?
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Additional arguments for text_on_cube():
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Additional arguments for text_on_cylinder():
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Additional arguments for text_on_circle():
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Additional arguments for text_on_sphere():
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*/
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// These control the default values for text_extrude(), text_on_sphere(), text_on_cube(), text_on_cylinder(), text_on_circle()
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// if the arguments are not included in the call to the module.
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// Defaults
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// Defaults for all modules
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default_t="text_on";
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default_size = 4; //TODO - Can we make this 10?? To match internal size? There is an underlying value in text() -- This masks that.
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default_font = "Liberation Mono";
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default_spacing = 1; //Spacing between characters. There is an underlying value in text() -- This masks that. We try and match it here.
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default_rotate = 0; // text rotation (clockwise)
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default_center = true; //Text-centering
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default_scale = [1,1,1];
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default_extrusion_height = 2; //mm letter extrusion height
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//Defaults for Cube
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default_cube_face = "front"; // default face (top,bottom,left,right,back,front)
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default_sphere_rounded = false; //default for rounded letters on text_on_sphere
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default_cube_updown = 0; //mm up (-down) from center on face of cube
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default_cube_rightleft = 0; //mm right(-left) from center on face of cube
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//Defaults for Sphere
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default_sphere_northsouth= 0;
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default_sphere_eastwest = 0;
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default_sphere_spin = 0; //TODO:Different to rotate? or up/down. Better name?
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//Defaults for Cylinder (including circle as it is on top/bottom)
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default_circle_middle = 0; //(mm toward middle of circle)
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default_circle_ccw = false; //write on top or bottom in a ccw direction
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default_circle_eastwest = 0;
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default_cylinder_face = "side";
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default_cylinder_updown = 0;
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//Internal values - don't play with these :)
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//This is much more accurate than the PI constant internal to Openscad.
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internal_pi=3.1415926535897932384626433832795028841971693993751058209;
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internal_pi2=internal_pi*2;
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//Internal values - You might want to play with these if you are using a proportional font
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internal_space_fudge = 0.80; //Fudge for working out lengths (widths) of strings
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debug = true;
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//---- Helper Functions ----
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//String width (length from left to right or RTL) in OpenSCAD units
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//NOTE: These are innacurate because we don't know the real spacing of the chars and so have to approximate
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//They work for monospaced (fixed-width) fonts well
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function width_of_text_char( size, spacing ) = (size * internal_space_fudge * spacing);
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function width_of_text_string_num_length(length, size, spacing) = ( width_of_text_char( size, spacing ) * (length));
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function width_of_text_string( t, size, spacing ) = ( width_of_text_string_num_length(len(t), size, spacing) );
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function cylinder_center_adjusted_top( height, center ) = (center==true) ? height/2 : height ;
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function cylinder_center_adjusted_bottom( height, center ) = (center==true) ? height/2 : 0 ;
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//Angle that measures width of letters on perimeter of a circle (and sphere and cylinder)
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function rotation_for_character(size, spacing, r, rotate = 0)
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= ( width_of_text_char( size, spacing ) /(internal_pi2*r))*360*(1-abs(rotate)/90);
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//Rotate 1/2 width of text if centering
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//One less -- if we have a single char we are already centred..
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function rotation_for_center_text_string( t, size, spacing,r,rotate,center)
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= (center) ? (width_of_text_string_num_length( len(t)-1, size, spacing )/2/(internal_pi2*r)*360) : 0 ;
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//Rotate according to rotate and if centred text also 1/2 width of text
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function rotation_for_center_text_string_and_rotate( t, size, spacing,r,rotate,center)
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= ((center) ? (width_of_text_string( t, size, spacing )/2/(internal_pi2*r)*360) : 1) * (1-abs(rotate)/90);
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//---- Text on Object Functions ----
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//Text on the top or side of a cylinder.
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//Supports writing on normal and slanty cylinders
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//cylinder(h,r,center)
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//cylinder(h,r1,r2,center)
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module text_on_cylinder(t=default_t,
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//Object-specific
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locn_vec = [0,0,0],
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r,r1,r2,h,
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face = default_cylinder_face,
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updown = default_cylinder_updown,
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rotate = default_rotate,
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eastwest = default_circle_eastwest,
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middle = default_circle_middle,
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ccw = default_circle_ccw,
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cylinder_center = false, //if the cylinder object we are writing on is center==true
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//TODO: add rounded
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//All objects
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extrusion_height = default_extrusion_height,
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center = default_center,
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//All objects -- arguments as for text()
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font = undef,
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size = default_size,
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direction = undef,
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halign = undef,
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valign = undef,
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language = undef,
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script = undef,
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spacing = default_spacing
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){
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// echo (str("text_on_cylinder:There are " ,len(t) ," letters in t" , t));
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// echo (str("text_on_cylinder:","h" , h));
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// echo (str("text_on_cylinder:","r=" , r));
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// echo (str("text_on_cylinder:","r1=" , r1));
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// echo (str("text_on_cylinder:","r2=" , r2));
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if((halign!=undef) || (halign!=undef))
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{
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echo (str("text_on_cylinder:","WARNING " , "halign and valign are NOT supported."));
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}
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rtl_sign = (direction=="rtl") ? -1 : 1;
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if ((face=="top")||(face=="bottom") ){
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//Work on a circle
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locn_offset_vec = (face=="top" ) ? [0,0,cylinder_center_adjusted_top(h,cylinder_center)] : [0,0,cylinder_center_adjusted_bottom(h,cylinder_center)] ;
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rotation_angle = (face=="top" ) ? 0 : 180 ;
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int_radius = (r==undef) ? ((face=="top" ) ? r2 : r1 ) : r; //Use the top/bottom radius for slanty-cylinders
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rotate(rotation_angle,[1,0,0])
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text_on_circle(t,locn_vec+locn_offset_vec,r=int_radius-size,
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font=font,size=size,
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spacing=spacing,direction=direction,language=language,script=script,halign=halign,valign=valign,
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extrusion_height=extrusion_height,
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rotate=rotate,
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eastwest=eastwest,middle=middle,ccw=ccw);
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}else{
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if((middle!=undef) && (middle!=default_circle_middle))
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{
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//TODO: Which others?
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//TODO: Which side things aren't supported on the circle
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echo (str("text_on_cylinder:","WARNING " , "middle NOT supported for the SIDE of a cylinder."));
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}
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//Work on the side
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locn_offset_vec = (cylinder_center==true) ? [0,0,0] : [0,0,h/2];
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rotate(-rtl_sign * rotation_for_center_text_string_and_rotate(t, size, spacing,r,rotate,center), [0,0,1])
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translate(locn_vec+locn_offset_vec)
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__internal_text_on_cylinder_side(t,locn_vec,r=r,h=h,r1=r1,r2=r2,
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cylinder_center=cylinder_center,
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center=center,
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font=font,size=size,
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spacing=spacing,direction=direction,language=language,script=script,halign=halign,valign=valign,
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extrusion_height=extrusion_height,
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rotate=rotate,face=face,updown=updown,
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eastwest=eastwest);
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}
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}
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//circle(r)
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module text_on_circle(t=default_t,
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//Object-specific
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locn_vec = [0,0,0],
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r,
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eastwest = default_circle_eastwest,
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middle = default_circle_middle,
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ccw = default_circle_ccw,
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//All objects
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extrusion_height = default_extrusion_height,
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rotate = default_rotate,
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center = default_center,
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//All objects -- arguments as for text()
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font = undef,
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size = default_size,
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direction = undef,
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halign = undef,
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valign = undef,
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language = undef,
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script = undef,
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spacing = default_spacing
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){
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// echo (str("text_on_circle:","There are " ,len(t) ," letters in t" , t));
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// echo (str("text_on_circle:","rotate=" , rotate));
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// echo (str("text_on_circle:","eastwest=" , eastwest));
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if((halign!=undef) || (halign!=undef))
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{
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echo (str("text_on_circle:","WARNING " , "halign and valign are NOT supported."));
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}
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ccw_sign = (ccw==true) ? 1 : -1;
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rtl_sign = (direction=="rtl") ? -1 : 1;
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ttb_btt_inaction = (direction=="ttb" || direction=="btt") ? 0 : 1;
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rotate_z_outer = -rotate + ccw_sign*eastwest;
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rotate_z_inner = -rtl_sign * ccw_sign * ttb_btt_inaction * rotation_for_center_text_string( t, size, spacing, r-middle, rotate, center);
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rotate( rotate_z_outer, [0,0,1] )
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rotate( rotate_z_inner, [0,0,1] )
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translate(locn_vec)
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for (l=[0:len(t)-1]){
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//TTB/BTT means no per letter rotation
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rotate_z_inner2 = -ccw_sign * 90 + ttb_btt_inaction*rtl_sign*ccw_sign*l*rotation_for_character(size, spacing, r-middle, rotate=0); //Bottom out=-270+r
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//TTB means we go toward center, BTT means away
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vert_x_offset = (direction=="ttb" || direction=="btt") ? (l * size * ((direction=="btt") ? -1 : 1)) : 0;
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rotate( rotate_z_inner2, [0,0,1] )
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translate([r - middle - vert_x_offset,0,0])
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rotate(-ccw_sign*270,[0,0,1]) // flip text (botom out = -270)
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text_extrude(t[l],center=true,
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font=font,size=size,
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rotate=undef,
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spacing=spacing,
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direction=undef, //We don't pass direction ( misaligns inside text() ). TODO: Investigate why
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language=language,script=script,halign=halign,valign=valign,
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extrusion_height=extrusion_height );
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}
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}
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//Only expected to be called from another function. No defaults as expected to be done in parent.
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//NOTE: This is hacked. Requires more mathematics than I feel like to do properly today....
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//TODO: Refactor the two operations - side of normal and slanty
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//No default checks in this funciton -- done in parent
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module __internal_text_on_cylinder_side(t=default_t,
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//Object-specific
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locn_vec = [0,0,0],
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r,r1,r2,h,
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cylinder_center,
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//All objects
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extrusion_height = default_extrusion_height,
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center = undef,
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rotate = default_rotate,
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//All objects -- arguments as for text()
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font = undef,
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size = default_size,
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direction = undef,
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halign = undef, //Overridden
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valign = undef,
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language = undef,
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script = undef,
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spacing = default_spacing
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)
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{
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// echo (str("__internal_text_on_cylinder_side:There are " ,len(t) ," letters in t" , t));
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// echo (str("__internal_text_on_cylinder_side:","h=" , h));
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// echo (str("__internal_text_on_cylinder_side:","r=" , r));
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// echo (str("__internal_text_on_cylinder_side:","r1=" , r1));
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// echo (str("__internal_text_on_cylinder_side:","r2=" , r2));
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// echo (str("__internal_text_on_cylinder_side:","direction=" , direction));
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if((halign!=undef) || (halign!=undef))
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{
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echo (str("text_on_cylinder:","WARNING " , "halign and valign are NOT supported."));
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}
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wid = width_of_text_char( size, spacing ); //TODO: refactor this out?
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function calc_radius_at_height_offset(r1,r2,h_total,h_offset) = ( r1 + ((r2-r1) * (h_total-h_offset)/h_total) );
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//Has to factor in up/downedness
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//Starts at middle height then height displacement is reduced under rotation and by the slope of the uneven radii
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function calc_height_offset_at_length(r1,r2,h,length,rotate, updown) = ( h/2 - updown + length * rotate/90 * cos( atan( (r2-r1)/h ) ) );
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function calc_radius_at_length(r1,r2,h,length,rotate,updown) = ( calc_radius_at_height_offset(r1,r2,h,calc_height_offset_at_length(r1,r2,h,length,rotate,updown)));
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if(r==undef)
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{
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//Slanty-cylinder (truncated cone) warnings
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if((direction=="btt") || (direction=="ttb"))
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{
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//TODO: After the issues are resolved refactoring should give this pretty easily
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echo (str("text_on_cylinder:","WARNING" , " - Slanty-cylinders definitely don't directions TTB or BTT on sides yet. Setting direction to ltr."));
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}
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if(center==true)
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{
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echo (str("text_on_cylinder:","WARNING" , " - Slanty-cylinders don't support centering yet. Setting center to false. You can adjust updown and eastwest and achieve most of what you are after...."));
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}
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}
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r1 = (r1!=undef) ? r1 : r;
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r2 = (r2!=undef) ? r2 : r;
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//NOTE: r is not used after here. We operate on generalised slanty cone (r1 and r2)
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//TODO: Look at changing this to extrusion_height_center
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//and renaming the other as text_center
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rr1 = (center) ? r1-extrusion_height/2 : r1;
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rr2 = (center) ? r2-extrusion_height/2 : r2;
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ccenter = (r!=undef) ? center : false; //We don't do (text) centering for the slanty cones/helical paths (yet? ever?). Needs to do quite a few offset calcs.
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ddirection = ((r==undef) && ((direction=="ttb")||(direction=="btt"))) ? "ltr" : direction; //We don't do ttb or btt directions on slanty
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rtl_sign = (ddirection=="rtl") ? -1 : 1;
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//This code takes care of slanty cylinders and "normal" cylinders
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translate([0,0,updown])
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rotate(eastwest,[0,0,1])
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for (l=[0:len(t)-1]){
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//TODO: TTB and BTT need to have a different concept of path/length than this for RTL/LTR
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//width_of_... is half a char too long -- add 0.5 (counting from zero)
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length_to_center_of_char = width_of_text_string_num_length(l+0.5,size,spacing);
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radius_here = calc_radius_at_length(rr1,rr2,h, length_to_center_of_char, rotate, updown);
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//Rotating into position and tangentially to surface -- Don't rotate per character for ttb/btt
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//-90 is to get centering at origin
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rotate_z_inner = -90 + rtl_sign * rotation_for_character(size, spacing, ( radius_here ), rotate) * ((ddirection=="ttb" || ddirection=="btt") ? 0 : l);
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rotate(rotate_z_inner,[0,0,1])
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{
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//Positioning - based on (somewhat innacurate) string length
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//Offset per character to go up/down the side in ttb/btt -- TTB down, BTT up
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vert_z_char_offset = (ddirection=="ttb" || ddirection=="btt") ? (l * size * ((ddirection=="ttb") ? -1 : 1 )) : 0 ;
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//Only if RTL/LTR and if center -- center the text (starts off in a more visually appealing location)
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vert_z_half_text_offset_tmp = (len(t)-1)/2 * (rotate/90*wid);
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vert_z_half_text_offset = ((ddirection=="ttb" || ddirection=="btt") || (ccenter==false)) ? 0 : vert_z_half_text_offset_tmp;
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translate([ radius_here , 0, vert_z_char_offset - l * ((rotate)/90*wid) + vert_z_half_text_offset])
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//Flip to tangent on the sloping side (without respecting rotation impact on the tangent -- rotate seems a little off. TODO: Investigate).
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rotate( atan( (rr2-rr1)/h ) , [0,1,0])
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//Flip onto face of "normal" cylinder
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rotate(90,[1,0,0])
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rotate(90,[0,1,0])
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//Modify the offset of the baselined text to center
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translate([0,(ccenter) ? -size/2 : 0,0])
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text_extrude(t[l],
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center=false,
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rotate=rotate,
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font=font,size=size,
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spacing=spacing,
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direction=undef, //We don't pass direction ( misaligns inside text() ). TODO: Investigate why
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language=language,script=script,
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halign="center", //This can be relaxed eventually
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valign="baseline", //Need this to keep all letters on the same line (could also support top -- otherw will make
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extrusion_height=extrusion_height
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);
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}
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}
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}
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//sphere(r)
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//NB: Iterates through characters/glyphs and presents them individually (but supports actions across the entire string still)
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//supports all features of text() except: halign and valign
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module text_on_sphere(t=default_t,
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//Object-specific
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locn_vec = [0,0,0],
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r,
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eastwest = default_sphere_eastwest,
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northsouth = default_sphere_northsouth,
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rotate = default_rotate,
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spin = default_sphere_spin,
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rounded = default_sphere_rounded,
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//All objects
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extrusion_height = default_extrusion_height,
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center = default_center, //center = false doesn't really even make sense to do (IMHO)
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scale = default_scale,
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//All objects -- arguments as for text()
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font = undef,
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size = default_size,
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direction = undef,
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halign = undef, //Not supported - only here to enable a warning
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valign = undef, //Not supported - only here to enable a warning
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language = undef,
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script = undef,
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spacing = default_spacing
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){
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//echo ("text_on_sphere:There are " ,len(t) ," letters in t" , t);
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if((halign!=undef) || (halign!=undef))
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{
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echo (str("text_on_sphere:","WARNING " , "halign and valign are NOT supported (functionality used in centering)."));
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|
}
|
|
|
|
//TODO: refactor this?
|
|
rtl_sign = (direction=="rtl") ? -1 : 1;
|
|
|
|
//TODO: Look at changing this to extrusion_height_center
|
|
//and renaming the other as text_center
|
|
//If we are centered - we sink the radius by half the
|
|
//extrusion height to draw "just below the surface"
|
|
rr = (center) ? r-extrusion_height/2 : r ;
|
|
|
|
rotate(eastwest,[0,0,1])
|
|
rotate(-northsouth,[1,0,0])
|
|
rotate(spin,[0,1,0])
|
|
{
|
|
//This tries to center the text (for RTL text).
|
|
ttb_btt_inaction = (direction=="ttb" || direction=="btt") ? 0 : 1;
|
|
rotate( -rtl_sign * ttb_btt_inaction * rotation_for_center_text_string(t, size, spacing, rr, rotate, center), [0,0,1])
|
|
{
|
|
translate(locn_vec)
|
|
if ( rounded == false ){
|
|
__internal_text_on_sphere_helper(t=t,r=rr,
|
|
rotate=rotate,
|
|
center=center,
|
|
scale=scale,
|
|
font=font,size=size,
|
|
spacing=spacing,
|
|
direction=direction,
|
|
language=language,script=script,halign=halign,valign=valign,
|
|
extrusion_height=extrusion_height
|
|
);
|
|
}else{
|
|
//If rounding then clip the text inside an inner sphere and outer sphere
|
|
intersection()
|
|
{
|
|
__internal_text_on_sphere_helper(t=t,r=rr,
|
|
rotate=rotate,
|
|
center=center,
|
|
scale=scale,
|
|
font=font,size=size,
|
|
spacing=spacing,
|
|
direction=direction,
|
|
language=language,script=script,halign=halign,valign=valign,
|
|
extrusion_height=extrusion_height*2 //Make it proud to clip it off.
|
|
);
|
|
|
|
//Shell - bounding inner and outer
|
|
difference()
|
|
{ //rounded outside
|
|
sphere(rr+extrusion_height);
|
|
// rounded inside for indented text
|
|
sphere( rr );
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//internal function -- don't call directly
|
|
//No default checks in this funciton -- done in parent
|
|
module __internal_text_on_sphere_helper(t=default_t,
|
|
//Object-specific
|
|
r,
|
|
//All objects
|
|
extrusion_height = default_extrusion_height,
|
|
center = default_center,
|
|
scale = default_scale,
|
|
//All objects -- arguments as for text()
|
|
font = undef,
|
|
size = default_size,
|
|
direction = undef,
|
|
//halign = undef,
|
|
//valign = undef,
|
|
language = undef,
|
|
script = undef,
|
|
spacing = default_spacing
|
|
)
|
|
{
|
|
rtl_sign = (direction=="rtl") ? -1 : 1;
|
|
ttb_btt_inaction = (direction=="ttb" || direction=="btt") ? 0 : 1;
|
|
ttb_btt_action = (direction=="ttb" || direction=="btt") ? 1 : 0;
|
|
|
|
for (l=[0:len(t)-1]){
|
|
rotate_z_inner = -90 + rtl_sign * ttb_btt_inaction * l * rotation_for_character(size, spacing, r, 0);
|
|
|
|
rotate( rotate_z_inner, [0,0,1] )
|
|
{
|
|
translate_sign = (direction=="ttb" || direction=="btt") ? ((direction=="btt") ? 1 : -1) : 0 ;
|
|
//translate_effect = (direction=="ttb" || direction=="btt") ? 1 : 0 ;
|
|
//Translate letter to be located on the sphere in up/down direction when we are doing TTB and BTT
|
|
translate(r * [cos(0 + ttb_btt_action * rotation_for_character(size, spacing, r, rotate) * l ), 0, translate_sign * ttb_btt_action * sin(0 + rotation_for_character(size, spacing, r, rotate) * l ) ])
|
|
//Rotate letter to be tangential to the new part of the sphere when we are doing TTB and BTT
|
|
rotate(-90 * translate_sign * (0 + ttb_btt_action * rotation_for_character(size, spacing, r, rotate) * l )/90 , [0,1,0])
|
|
//Flip character into position to be flush against sphere
|
|
rotate(90,[1,0,0])
|
|
rotate(90,[0,1,0])
|
|
|
|
//Modify the offset of the baselined text to center
|
|
translate([0,(center) ? -size/2 : 0 ,0])
|
|
|
|
text_extrude(t[l],
|
|
center=false,
|
|
rotate=rotate,
|
|
scale=scale,
|
|
font=font,
|
|
size=size,
|
|
spacing=spacing,
|
|
direction=undef, //We don't pass direction ( misaligns inside text() ). TODO: Investigate why
|
|
language=language,script=script,
|
|
halign="center", //This can be relaxed eventually
|
|
valign="baseline", //Need this to keep all letters on the same line (could also support top -- otherw will make wonky letters)
|
|
extrusion_height=extrusion_height );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//cube(size)
|
|
//cube([width,h,depth])
|
|
//NB: cube_size is used instead of size (the name size is used in the text module)
|
|
//NB: Passes through text as strings -- supports all features of text()
|
|
module text_on_cube( t=default_t,
|
|
//Object-specific
|
|
cube_size, //number or 3-vector
|
|
face = default_cube_face,
|
|
rightleft = default_cube_rightleft,
|
|
updown = default_cube_updown,
|
|
//All objects
|
|
locn_vec = [0,0,0],
|
|
extrusion_height = default_extrusion_height,
|
|
center = undef,
|
|
rotate = default_rotate,
|
|
scale = default_scale,
|
|
//All objects -- arguments as for text()
|
|
font = undef,
|
|
size = default_size,
|
|
direction = undef,
|
|
halign = undef,
|
|
valign = undef,
|
|
language = undef,
|
|
script = undef,
|
|
spacing = default_spacing
|
|
){
|
|
//echo (str("text_on_cube:","There are " ,len(t) ," letters in t" , t));
|
|
//echo (str("text_on_cube:","cube_size" , cube_size));
|
|
|
|
if((halign!=undef) || (halign!=undef))
|
|
{
|
|
echo (str("text_on_cube:","WARNING " , "halign and valign are NOT supported."));
|
|
}
|
|
|
|
int_cube_size = (str(cube_size)[0] != "[") ? [cube_size,cube_size,cube_size] : cube_size;
|
|
rotate_x = ( (face=="front") || (face=="back") || (face=="left") || (face=="right") ) ? 90
|
|
: ((face=="bottom") ? 180 : 0) ; //Top is zero
|
|
rotate_y = ( (face=="back") || (face=="left") || (face=="right") ) ? (face=="back") ? 180 : ((face=="left") ? -90 : 90) //Right is 90
|
|
: 0 ; //Top, bottom, front are zero
|
|
locn_vec_offset =
|
|
(face=="front") ? [+rightleft, -int_cube_size[1]/2, +updown]
|
|
:((face=="back")? [+rightleft, +int_cube_size[1]/2, +updown]
|
|
: ((face=="left")? [-int_cube_size[0]/2, +rightleft, +updown]
|
|
: ((face=="right")? [+int_cube_size[0]/2, +rightleft, +updown]
|
|
: ((face=="top")? [+rightleft, +updown, +int_cube_size[2]/2]
|
|
: [+rightleft, -updown, -int_cube_size[2]/2]
|
|
)))); //bottom
|
|
|
|
translate(locn_vec + locn_vec_offset)
|
|
rotate(rotate_x,[1,0,0])
|
|
rotate(rotate_y,[0,1,0]) // rotate around the y axis (z before rotation)
|
|
text_extrude(t,
|
|
center=center,
|
|
rotate=rotate,
|
|
scale=scale,
|
|
font=font,
|
|
size=size,
|
|
spacing=spacing,
|
|
direction=direction, //Does this misalign inside text()? the individual character modules do.
|
|
language=language,
|
|
script=script,
|
|
halign=halign,
|
|
valign=valign,
|
|
extrusion_height=extrusion_height );
|
|
}
|
|
|
|
function default_if_undef(val, default_val) = (val!=undef) ? val : default_val ;
|
|
|
|
//Print a single character or a string at the desired extrusion height
|
|
//Passes on values to text() that are passed in
|
|
//TODO: Add x,y,z rotations get text facing the right way from the start)
|
|
module text_extrude( t=default_t,
|
|
extrusion_height = default_extrusion_height,
|
|
center = default_center, //Fudgy. YMMV. //TODO:center_extrusion, or extrusion offset??
|
|
rotate = default_rotate,
|
|
scale = default_scale, //For scaling by different on axes (for widening etc)
|
|
//Following are test() params (in addition to t=)
|
|
font = default_font,
|
|
size = default_size,
|
|
direction = undef,
|
|
halign = undef,
|
|
valign = undef,
|
|
language = undef,
|
|
script = undef,
|
|
spacing = default_spacing
|
|
)
|
|
{
|
|
//echo (str("text_extrude:","There are " ,len(t) ," letters in text" , t));
|
|
//echo (str("text_extrude:","extrusion_height=" , extrusion_height));
|
|
|
|
if(center==true)
|
|
{
|
|
if((halign!=undef) || (valign!=undef))
|
|
{
|
|
echo (str("text_extrude:","WARNING " , "When center is true, then halign and valign are NOT supported."));
|
|
}
|
|
}
|
|
|
|
//As arguments are explicitly set as undef (from higher functions) as they come down (they don't get defaults in this function as they are set as something)
|
|
//we need to check and replace any that we don't want to be undef
|
|
t = default_if_undef(t,default_t);
|
|
font = default_if_undef(font,default_font);
|
|
extrusion_height = default_if_undef(extrusion_height,default_extrusion_height);
|
|
center = default_if_undef(center,default_center);
|
|
rotate = default_if_undef(rotate,default_rotate);
|
|
spacing = default_if_undef(spacing,default_spacing);
|
|
size = default_if_undef(size,default_size);
|
|
|
|
halign = (center) ? "center" : halign ;
|
|
valign = (center) ? "center" : valign ;
|
|
extrusion_center = (center) ? true : false ;
|
|
|
|
scale( scale )
|
|
rotate(rotate,[0,0,-1]) //TODO: Do we want to make this so that the entire vector can be set?
|
|
{
|
|
linear_extrude(height=extrusion_height,convexity=10,center=extrusion_center)
|
|
text(text=t, size = size,
|
|
$fn = 40,
|
|
font = font, direction = direction, spacing = spacing,
|
|
halign = halign,
|
|
valign = valign,
|
|
language=language, script=script);
|
|
}
|
|
}
|
|
|