gridfinity-rebuilt-openscad/gridfinity-rebuilt-utility.scad

// UTILITY FILE, DO NOT EDIT
// EDIT OTHER FILES IN REPO FOR RESULTS

include <gridfinity-constants.scad>

// ===== User Modules ===== //

// functions to convert gridz values to mm values
function hf (z, d, l) = (d==0)?z*7:(d==1)?h_bot+z+h_base:z-(l?3.8:0);
function height (z,d=0,l=true,s=true) = (s?((abs(hf(z,d,l))%7==0)?hf(z,d,l):hf(z,d,l)+7-abs(hf(z,d,l))%7):hf(z,d,l))-h_base;

// Creates equally divided cutters for the bin
//
// n_divx:  number of x compartments (ideally, coprime w/ gridx)    
// n_divy:  number of y compartments (ideally, coprime w/ gridy) 
//          set n_div values to 0 for a solid bin 
// style_tab:   tab style for all compartments. see cut()
// enable_scoop:    scoop toggle for all compartments. see cut()
module cutEqual(n_divx=1, n_divy=1, style_tab=1, enable_scoop=true) {
    for (i = [1:n_divx]) 
    for (j = [1:n_divy])
    cut((i-1)*$gxx/n_divx,(j-1)*$gyy/n_divy, $gxx/n_divx, $gyy/n_divy, style_tab, enable_scoop);
}

// initialize gridfinity
module gridfinityInit(gx, gy, h, h0 = 0, l) {
    $gxx = gx;
    $gyy = gy;
    $dh = h; 
    $dh0 = h0; 
    color("tomato") {
    difference() {
        color("firebrick") 
        block_bottom(h0==0?$dh-0.1:h0, gx, gy, l);
        children();
    }
    color("royalblue") 
    block_wall(gx, gy, l) {
        if (enable_lip) profile_wall();
        else profile_wall2();
    } 
    }
}
// Function to include in the custom() module to individually slice bins
// Will try to clamp values to fit inside the provided base size
//
// x:   start coord. x=1 is the left side of the bin.
// y:   start coord. y=1 is the bottom side of the bin. 
// w:   width of compartment, in # of bases covered
// h:   height of compartment, in # of basese covered
// t:   tab style of this specific compartment.
//      alignment only matters if the compartment size is larger than d_tabw
//      0:full, 1:auto, 2:left, 3:center, 4:right, 5:none
//      Automatic alignment will use left tabs for bins on the left edge, right tabs for bins on the right edge, and center tabs everywhere else. 
// s:   toggle the rounded back corner that allows for easy removal
module cut(x=0, y=0, w=1, h=1, t=1, s=true) {
    translate([0,0,-$dh-h_base])
    cut_move(x,y,w,h)
    block_cutter(clp(x,0,$gxx), clp(y,0,$gyy), clp(w,0,$gxx-x), clp(h,0,$gyy-y), t, s);
}

// Translates an object from the origin point to the center of the requested compartment block, can be used to add custom cuts in the bin
// See cut() module for parameter descriptions
module cut_move(x, y, w, h) {
    translate([0,0,$dh0==0?$dh+h_base:$dh0+h_base])
    cut_move_unsafe(clp(x,0,$gxx), clp(y,0,$gyy), clp(w,0,$gxx-x), clp(h,0,$gyy-y))
    children();
} 

// ===== Modules ===== //

module profile_base() {
    polygon([
        [0,0],
        [0,h_base],
        [r_base,h_base],
        [r_base-r_c2,h_base-r_c2],
        [r_base-r_c2,r_c1],
        [r_base-r_c2-r_c1,0]
    ]);
}

module gridfinityBase(gx, gy, l, dx, dy, style_hole, off=0, final_cut=true) {
    dbnxt = [for (i=[1:5]) if (abs(gx*i)%1 < 0.001 || abs(gx*i)%1 > 0.999) i];
    dbnyt = [for (i=[1:5]) if (abs(gy*i)%1 < 0.001 || abs(gy*i)%1 > 0.999) i];
    dbnx = 1/(dx==0 ? len(dbnxt) > 0 ? dbnxt[0] : 1 : round(dx));
    dbny = 1/(dy==0 ? len(dbnyt) > 0 ? dbnyt[0] : 1 : round(dy));
    xx = gx*l-0.5;
    yy = gy*l-0.5;
    
    if (final_cut)
    translate([0,0,h_base])
    rounded_rectangle(xx+0.002, yy+0.002, h_bot/1.5, r_fo1/2+0.001);

    intersection(){
        if (final_cut) 
        translate([0,0,-1])
        rounded_rectangle(xx+0.005, yy+0.005, h_base+h_bot/2*10, r_fo1/2+0.001);
        
        render()
        difference() {
            pattern_linear(gx/dbnx, gy/dbny, dbnx*l, dbny*l) 
            block_base_solid(dbnx, dbny, l, off);
            
            if (style_hole > 0)
            pattern_linear(gx, gy, l)
            block_base_hole(style_hole, off);
        }
    }
}

module block_base_solid(dbnx, dbny, l, o) { 
    xx = dbnx*l-0.05; 
    yy = dbny*l-0.05; 
    oo = (o/2)*(sqrt(2)-1);
    translate([0,0,h_base])
    mirror([0,0,1])
    union() {
        hull() {
            rounded_rectangle(xx-2*r_c2-2*r_c1+o, yy-2*r_c2-2*r_c1+o, h_base+oo, r_fo3/2);
            rounded_rectangle(xx-2*r_c2+o, yy-2*r_c2+o, h_base-r_c1+oo, r_fo2/2);
        }
        translate([0,0,oo])
        hull() {
            rounded_rectangle(xx-2*r_c2+o, yy-2*r_c2+o, r_c2, r_fo2/2);
            mirror([0,0,1])
            rounded_rectangle(xx+o, yy+o, h_bot/2+abs(10*o), r_fo1/2);
        }
    }
}

module block_base_hole(style_hole, o=0) {
    r1 = r_hole1-o/2;
    r2 = r_hole2-o/2;
    pattern_circular(abs(d_hole)<0.001?1:4) 
    translate([d_hole/2, d_hole/2, 0])
    union() {
        difference() {
            cylinder(h = 2*(h_hole-o+(style_hole==3?h_slit:0)), r=r2, center=true);

            if (style_hole==3)
            copy_mirror([0,1,0])
            translate([-1.5*r2,r1+0.1,h_hole-o]) 
            cube([r2*3,r2*3, 10]);
        }
        if (style_hole > 1)
        cylinder(h = 2*h_base-o, r = r1, center=true);
    }
}

module profile_wall_sub_sub() {
    polygon([
        [0,0],
        [d_wall/2,0],
        [d_wall/2,$dh-1.2-d_wall2+d_wall/2],
        [d_wall2-d_clear,$dh-1.2],
        [d_wall2-d_clear,$dh+h_base],
        [0,$dh+h_base]
    ]);
}

module profile_wall_sub() {
    difference() {
        profile_wall_sub_sub();
        color("red")
        offset(delta = d_clear) 
        translate([r_base-d_clear,$dh,0])
        mirror([1,0,0]) 
        profile_base();
        square([d_wall,0]);
    }
}

module profile_wall() {
    translate([r_base,0,0])
    mirror([1,0,0])
    difference() {
        profile_wall_sub();
        difference() {
            translate([0, $dh+h_base-d_clear*sqrt(2), 0]) 
            circle(r_base/2);
            offset(r = r_f1) 
            offset(delta = -r_f1)
            profile_wall_sub();
        }
    }
}

// lipless profile
module profile_wall2() {
    translate([r_base,0,0]) 
    mirror([1,0,0]) 
    square([d_wall,$dh]);
}

module block_wall(gx, gy, l) {
    translate([0,0,h_base]) 
    sweep_rounded(gx*l-2*r_base-0.5-0.001, gy*l-2*r_base-0.5-0.001)
    children();
}

module block_bottom( h = 2.2, gx, gy, l ) {
    translate([0,0,h_base+0.1])
    rounded_rectangle(gx*l-0.5-d_wall/4, gy*l-0.5-d_wall/4, h, r_base+0.01);
}

module cut_move_unsafe(x, y, w, h) {
    xx = ($gxx*length+d_magic);
    yy = ($gyy*length+d_magic); 
    translate([(x)*xx/$gxx,(y)*yy/$gyy,0])
    translate([(-xx+d_div)/2,(-yy+d_div)/2,0])
    translate([(w*xx/$gxx-d_div)/2,(h*yy/$gyy-d_div)/2,0])
    children();
}

module block_cutter(x,y,w,h,t,s) {
    
    v_len_tab = d_tabh;
    v_len_lip = d_wall2-d_wall+1.2;
    v_cut_tab = d_tabh - (2*r_f1)/tan(a_tab); 
    v_cut_lip = d_wall2-d_wall-d_clear;
    v_ang_tab = a_tab;
    v_ang_lip = 45;
    
    ycutfirst = y == 0 && enable_lip;
    ycutlast = abs(y+h-$gyy)<0.001 && enable_lip; 
    xcutfirst = x == 0 && enable_lip;
    xcutlast = abs(x+w-$gxx)<0.001 && enable_lip;
    zsmall = ($dh+h_base)/7 < 3;
    
    ylen = h*($gyy*length+d_magic)/$gyy-d_div; 
    xlen = w*($gxx*length+d_magic)/$gxx-d_div; 
    
    height = $dh;
    extent = (s && ycutfirst ? d_wall2-d_wall-d_clear : 0); 
    tab = (zsmall || t == 5) ? (ycutlast?v_len_lip:0) : v_len_tab; 
    ang = (zsmall || t == 5) ? (ycutlast?v_ang_lip:0) : v_ang_tab;
    cut = (zsmall || t == 5) ? (ycutlast?v_cut_lip:0) : v_cut_tab;
    style = (t > 1 && t < 5) ? t-3 : (x == 0 ? -1 : xcutlast ? 1 : 0);
    
    translate([0,ylen/2,h_base+h_bot])
    rotate([90,0,-90]) {
    
    if (!zsmall && xlen - d_tabw > 4*r_f2 && t != 0) {
        fillet_cutter(3,"bisque")
        difference() {
            transform_tab(style, xlen, ((xcutfirst&&style==-1)||(xcutlast&&style==1))?v_cut_lip:0)
            translate([ycutlast?v_cut_lip:0,0]) 
            profile_cutter(height-h_bot, ylen/2, s);

            if (xcutfirst)
            translate([0,0,(xlen/2-r_f2)-v_cut_lip]) 
            cube([ylen,height,v_cut_lip*2]);
            
            if (xcutlast)
            translate([0,0,-(xlen/2-r_f2)-v_cut_lip])
            cube([ylen,height,v_cut_lip*2]);
        }
        if (t != 0 && t != 5)
        fillet_cutter(2,"indigo")
        difference() {
            transform_tab(style, xlen, ((xcutfirst&&style==-1)||(xcutlast&&style==1))?v_cut_lip:0)
            difference() {
                intersection() {
                    profile_cutter(height-h_bot, ylen-extent, s);
                    profile_cutter_tab(height-h_bot, v_len_tab, v_ang_tab);
                }
                if (ycutlast) profile_cutter_tab(height-h_bot, v_len_lip, 45);
            } 
            
            if (xcutfirst)
            translate([ylen/2,0,xlen/2])
            rotate([0,90,0])
            transform_main(2*ylen)
            profile_cutter_tab(height-h_bot, v_len_lip, v_ang_lip);
            
            if (xcutlast)
            translate([ylen/2,0,-xlen/2])
            rotate([0,-90,0])
            transform_main(2*ylen)
            profile_cutter_tab(height-h_bot, v_len_lip, v_ang_lip);
        }
    }
    
    fillet_cutter(1,"seagreen")
    translate([0,0,xcutlast?v_cut_lip/2:0])
    translate([0,0,xcutfirst?-v_cut_lip/2:0])
    transform_main(xlen-(xcutfirst?v_cut_lip:0)-(xcutlast?v_cut_lip:0))
    translate([cut,0]) 
    profile_cutter(height-h_bot, ylen-extent-cut-(!s&&ycutfirst?v_cut_lip:0), s);
    
    fillet_cutter(0,"hotpink")
    difference() {
        transform_main(xlen)
        difference() {
            profile_cutter(height-h_bot, ylen-extent, s);
            
            if (!((zsmall || t == 5) && !ycutlast))
            profile_cutter_tab(height-h_bot, tab, ang);
            
            if (!s && y == 0)
            translate([ylen-extent,0,0])
            mirror([1,0,0])
            profile_cutter_tab(height-h_bot, v_len_lip, v_ang_lip);
        }
        
        if (xcutfirst)
        color("indigo")
        translate([ylen/2+0.001,0,xlen/2+0.001])
        rotate([0,90,0])
        transform_main(2*ylen)
        profile_cutter_tab(height-h_bot, v_len_lip, v_ang_lip);
        
        if (xcutlast)
        color("indigo")
        translate([ylen/2+0.001,0,-xlen/2+0.001])
        rotate([0,-90,0])
        transform_main(2*ylen)
        profile_cutter_tab(height-h_bot, v_len_lip, v_ang_lip);
    }

    }
}

module transform_main(xlen) {
    translate([0,0,-(xlen-2*r_f2)/2])
    linear_extrude(xlen-2*r_f2)
    children();
}

module transform_tab(type, xlen, cut) {
    mirror([0,0,type==1?1:0])
    copy_mirror([0,0,-(abs(type)-1)])
    translate([0,0,-(xlen)/2])
    translate([0,0,r_f2])
    linear_extrude((xlen-d_tabw-abs(cut))/(1-(abs(type)-1))-2*r_f2)
    children();
}

module fillet_cutter(t = 0, c = "goldenrod") {
    color(c)
    minkowski() {
        children();
        sphere(r = r_f2-t/1000);
    }
}

module profile_cutter(h, l, s) {
    scoop = s ? (length*(($dh-2)/7+1)/12-r_f2) : 0; 
    translate([r_f2,r_f2])
    hull() {
        if (l-scoop-2*r_f2 > 0)
            square(0.1);
        if (scoop < h) {
            translate([l-2*r_f2,h-r_f2/2]) 
            mirror([1,1]) 
            square(0.1);
            
            translate([0,h-r_f2/2]) 
            mirror([0,1]) 
            square(0.1);
        }
        difference() {
            translate([l-scoop-2*r_f2, scoop]) 
            if (scoop != 0) {
                intersection() {
                    circle(scoop);
                    mirror([0,1]) square(2*scoop);
                }
            } else mirror([1,0]) square(0.1);
            translate([l-scoop-2*r_f2,-1]) 
            square([-(l-scoop-2*r_f2),2*h]);
            
            translate([0,h]) 
            square([2*l,scoop]);
        }
    }
}

module profile_cutter_tab(h, tab, ang) {
    if (tab > 0)
        color("blue")
        offset(delta = r_f2)
        polygon([[0,h],[tab,h],[0,h-tab*tan(ang)]]);
    
}

// ==== Utilities =====

function clp(x,a,b) = min(max(x,a),b);

module rounded_rectangle(length, width, height, rad) {
    linear_extrude(height)
    offset(rad) 
    offset(-rad) 
    square([length,width], center = true);
}

module rounded_square(length, height, rad) {
    rounded_rectangle(length, length, height, rad);
}

module copy_mirror(vec=[0,1,0]) {
    children();
    if (vec != [0,0,0]) 
    mirror(vec) 
    children();
} 

module pattern_linear(x = 1, y = 1, sx = 0, sy = 0) {
    yy = sy <= 0 ? sx : sy; 
    translate([-(x-1)*sx/2,-(y-1)*yy/2,0])
    for (i = [1:ceil(x)])
    for (j = [1:ceil(y)])
    translate([(i-1)*sx,(j-1)*yy,0]) 
    children();
}

module pattern_circular(n=2) {
    for (i = [1:n]) 
    rotate(i*360/n) 
    children();
}

module sweep_rounded(w=10, h=10) {
    union() pattern_circular(2) {
        copy_mirror([1,0,0]) 
        translate([w/2,h/2,0])
        rotate_extrude(angle = 90, convexity = 4) 
        children();
        
        translate([w/2,0,0])
        rotate([90,0,0])
        linear_extrude(height = h, center = true)
        children();
        
        rotate([0,0,90])
        translate([h/2,0,0])
        rotate([90,0,0])
        linear_extrude(height = w, center = true)
        children();
    }
}