// case top
module case_top(case_design) {

    difference() {
        union() {
            difference() {
                union() {
                    if(case_design == "shell") {
                        difference() {
                            translate([(width/2)-wallthick-gap,
                                (depth/2)-wallthick-gap,bottom_height+(top_height/2)]) 
                                    cube_fillet_inside([width,depth,top_height], 
                                        vertical=[c_fillet,c_fillet,c_fillet,c_fillet], 
                                            top=[fillet,fillet,fillet,fillet,fillet], 
                                                bottom=[0,0,0,0], $fn=90);
                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,
                                bottom_height+(top_height/2)-floorthick]) 
                                    cube_fillet_inside([width-(wallthick*2),depth-(wallthick*2),top_height], 
                                        vertical=[c_fillet-1,c_fillet-1,c_fillet-1,c_fillet-1],
                                            top=[fillet,fillet,fillet,fillet,fillet],
                                                bottom=[0,0,0,0], $fn=90);
                        }
                    }
                    if(case_design == "panel") {
                        union() {
                           translate([-gap,-gap,case_z-floorthick]) 
                                cube([width-(2*wallthick),depth-(2*wallthick),floorthick]);
                            translate([(width*(1/5))-8-(wallthick+gap),depth-(2*wallthick)-gap-adj,
                                case_z-floorthick]) 
                                    cube([8,wallthick+2*adj,floorthick]);
                            translate([width-(width*(1/5))-(wallthick+gap),depth-(2*wallthick)-gap-adj,
                                case_z-floorthick]) 
                                    cube([8,wallthick+2*adj,floorthick]);                   
                            translate([(width*(1/5))-8-(wallthick+gap),-wallthick-gap+adj,
                                case_z-floorthick]) 
                                    cube([8,wallthick+2*adj,floorthick]);
                            translate([width-(width*(1/5))-(wallthick+gap),-wallthick-gap+adj,
                                case_z-floorthick]) 
                                    cube([8,wallthick+2*adj,floorthick]);
                        }                
                    }
                    if(case_design == "stacked") {
                        translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,
                            case_z-(floorthick/2)]) 
                             cube_fillet_inside([width-(2*wallthick),depth-(2*wallthick),floorthick], 
                                 vertical=[c_fillet,c_fillet,c_fillet,c_fillet], 
                                     top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
                        }
                    if(case_design == "tray" && (case_style == "vu5" || case_style == "vu7" || case_style == "sides")) {
                        translate([-wallthick-gap+.5,-wallthick-gap,case_z])
                            cube([width-1,depth,floorthick]);
                        translate([-wallthick-gap+.5,-wallthick-gap,
                            case_z-floorthick+adj]) cube([width-1,wallthick,wallthick]);
                    }
                    if(case_design == "tray" && case_style == "none") {
                        difference() {
                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z/2]) 
                                cube_fillet_inside([width+2*wallthick+1,depth,case_z], 
                                    vertical=[0,0,0,0], top=[0,fillet,0,fillet,fillet], 
                                        bottom=[0,0,0,0], $fn=90);
                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,(case_z/2)-floorthick+.25]) 
                                cube_fillet_inside([width+1,depth+(wallthick*2),case_z], 
                                    vertical=[c_fillet-1,c_fillet-1,c_fillet-1,c_fillet-1],
                                        top=[0,0,0,0],bottom=[0,0,0,0], $fn=90);
                            // right side bottom attachment hole          
                            translate([width-2*(wallthick+gap)-sidethick-adj,wallthick+gap+10,
                                floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
                            // left side bottom attachment hole
                            translate([-2*(wallthick+gap)-sidethick-adj,wallthick+gap+10,
                                floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
                            if(depth >= 75 && sbc_model != "visionfive2" && sbc_model != "visionfive2q"&& sbc_model != "rock5b-v1.42" && sbc_model != "rock5bq-v1.42" && sbc_model != "rock5b-v1.3") {
                               translate([width-2*(wallthick+gap)-sidethick-adj,depth-wallthick-gap-10,
                                    floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
                                translate([-wallthick-gap-adj-6,depth-wallthick-gap-10,
                                    floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
                            }
                            else {
                                if(sbc_model == "visionfive2" || sbc_model == "visionfive2q" || sbc_model == "rock5b-v1.42" ||  sbc_model == "rock5bq-v1.42" || sbc_model == "rock5b-v1.3") {
                                   translate([width-2*(wallthick+gap)-sidethick-adj,wallthick+gap+58,
                                        floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
                                    translate([-wallthick-gap-adj-6,wallthick+gap+58,
                                        floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
                                }
                                else {
                                   translate([width-2*(wallthick+gap)-sidethick-adj,wallthick+gap+40,
                                        floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
                                    translate([-wallthick-gap-adj-6,wallthick+gap+40,
                                        floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
                                }
                            }
                        }
                    }
                    if(case_design == "round") {
                        difference() {
                            translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-lip/2]) rotate([0,0,30]) 
                                cylinder_fillet_inside(h=top_height+lip, r=case_diameter/2, 
                                    top=fillet, bottom=0, $fn=case_fn, fillet_fn=case_ffn, center=true);
                            translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-floorthick-lip/2]) rotate([0,0,30]) 
                                cylinder_fillet_inside(h=top_height+lip, r=(case_diameter/2)-wallthick, 
                                    top=fillet-1, bottom=0, $fn=case_fn, fillet_fn=case_ffn, center=true);
                            translate([pcb_width/2,pcb_depth/2,bottom_height-adj-lip/2]) rotate([0,0,30]) 
                                cylinder_fillet_inside(h=lip+2*adj, r=(case_diameter/2)-wallthick/2+tol/2, 
                                    top=fillet-1, bottom=0, $fn=case_fn, fillet_fn=case_ffn, center=true);
                            // io cutout
                            if(width/depth >= 1.4 && sbc_model != "vim1" && sbc_model != "vim2" && 
                                sbc_model != "vim3l" && sbc_model != "vim3" && sbc_model != "vim4" && 
                                    sbc_model != "rpizero" && sbc_model != "rpizero2w") {
                                translate([width,(depth/2)-wallthick-gap,bottom_height-lip+top_height/2-floorthick])
                                    cube_fillet_inside([18,depth-2*(wallthick+gap)-1,top_height+lip+2], 
                                        vertical=[0,0,0,0], top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
                            }
                            else {
                                translate([(width/2)-wallthick-gap,-20,bottom_height-lip+top_height/2-floorthick])
                                    cube_fillet_inside([width-2*(wallthick+gap)-1,40,top_height+lip+2], 
                                        vertical=[0,0,0,0], top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
                            }
                        }
                        if(width/depth >= 1.4 && sbc_model != "vim1" && sbc_model != "vim2" && 
                            sbc_model != "vim3l" && sbc_model != "vim3" && sbc_model != "vim4" && 
                                sbc_model != "rpizero" && sbc_model != "rpizero2w") {
                            translate([width-2*wallthick-gap-.95,depth/2-wallthick-gap-(depth-2*(floorthick+gap))/2,
                                bottom_height]) cube([wallthick-adj,depth-2*(floorthick+gap),top_height+adj]);
                        }
                        else {
                            translate([-.95,depth/2-2*wallthick-gap-(depth-2*(floorthick+gap))/2,
                                bottom_height]) cube([width-2*(floorthick+gap),wallthick-adj,top_height+adj]);
                        }
                    }
                    if(case_design == "hex") {
                        if(width/depth >= 1.4 && sbc_model != "vim1" && sbc_model != "vim2" && 
                            sbc_model != "vim3l" && sbc_model != "vim3" && sbc_model != "vim4" && 
                                sbc_model != "rpizero" && sbc_model != "rpizero2w") {
                            difference() {
                                translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-lip/2]) rotate([0,0,30]) 
                                    cylinder_fillet_inside(h=top_height+lip, r=case_diameter/2, 
                                        top=fillet, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
                                translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-floorthick-lip/2]) rotate([0,0,30]) 
                                    cylinder_fillet_inside(h=top_height+lip, r=(case_diameter/2)-wallthick, 
                                        top=fillet-1, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
                                translate([pcb_width/2,pcb_depth/2,bottom_height-adj-lip/2]) rotate([0,0,30]) 
                                    cylinder_fillet_inside(h=lip+2*adj, r=(case_diameter/2)-wallthick/2+tol/2, 
                                        top=fillet-1, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
                            // io cutout
                            translate([width,(depth/2)-wallthick-gap,bottom_height-lip+top_height/2-floorthick])
                                cube_fillet_inside([18,depth-2*(wallthick+gap)-1,top_height+lip+2], 
                                    vertical=[0,0,0,0], top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
                            }
                        }
                        else {
                            difference() {
                                translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-lip/2]) rotate([0,0,0]) 
                                    cylinder_fillet_inside(h=top_height+lip, r=hex_diameter/2, 
                                        top=fillet, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
                                translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-floorthick-lip/2])
                                    rotate([0,0,0]) cylinder_fillet_inside(h=top_height+lip, r=(hex_diameter/2)-wallthick, 
                                        top=fillet-1, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
                                translate([pcb_width/2,pcb_depth/2,bottom_height-adj-lip/2]) rotate([0,0,0]) 
                                    cylinder_fillet_inside(h=lip+2*adj, r=(hex_diameter/2)-wallthick/2+tol/2, 
                                        top=fillet-1, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
                                // io cutout
                                translate([(width/2)-wallthick-gap,-23,bottom_height-lip+top_height/2-floorthick])
                                    cube_fillet_inside([width-2*(wallthick+gap),40,top_height+lip+2], 
                                        vertical=[0,0,0,0], top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
                            }
                        }
                        if(width/depth >= 1.4 && sbc_model != "vim1" && sbc_model != "vim2" && 
                            sbc_model != "vim3l" && sbc_model != "vim3" && sbc_model != "vim4" &&
                                sbc_model != "rpizero" && sbc_model != "rpizero2w") {
                            translate([width-2*wallthick-gap-.95,depth/2-wallthick-gap-(depth-2*(floorthick+gap))/2,
                                bottom_height]) cube([wallthick-adj,depth-2*(floorthick+gap),top_height+adj]);
                        }
                        else {
                            translate([0,depth/2-2.25*(wallthick+gap)-(depth-2*(floorthick+gap))/2,
                                bottom_height]) cube([width-2*(floorthick+gap),wallthick-adj,top_height+adj]);
                        }
                    }
                    if(case_design == "snap") {
                        translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,floorthick*1.5+case_z])
                            cube_fillet_inside([width,depth,floorthick], 
                                vertical=[c_fillet,c_fillet,c_fillet,c_fillet], 
                                    top=[0,0,0,0],bottom=[fillet,fillet,fillet,fillet,fillet], $fn=90);
                        difference() {
                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z-adj]) 
                                cube_fillet_inside([width-2*wallthick-tol,depth-2*wallthick-tol,2*floorthick+1.5], 
                                    vertical=[c_fillet,c_fillet,c_fillet,c_fillet], 
                                        top=[0,0,0,0],bottom=[fillet,fillet,fillet,fillet,fillet], $fn=90);
                            
                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z-adj]) 
                                cube_fillet_inside([width-(3*wallthick),depth-(3*wallthick),2*floorthick+1.5+adj], 
                                    vertical=[c_fillet-1,c_fillet-1,c_fillet-1,c_fillet-1],top=[0,0,0,0],
                                        bottom=[fillet,fillet,fillet,fillet,fillet], $fn=90);
                        }
                        // snap top outdent
                        difference() {
                            translate([-wallthick-gap+1.25+tol,(depth/2)-((depth*.75)/2)+2.5-gap-wallthick,case_z-.5]) 
                                rotate([0,45,0]) cube([4,(depth*.75)-5,4]);
                            translate([-wallthick-gap+3,(depth/2)-((depth*.75)/2)+1.25-gap-wallthick,case_z+floorthick-5.75]) 
                                rotate([0,0,0]) cube([6,(depth*.75)-2,6]);
                        }
                        difference() {
                            translate([width-wallthick-gap-6.8-tol,(depth/2)-((depth*.75)/2)+2.5-gap-wallthick,case_z-.5])
                                rotate([0,45,0]) cube([4,(depth*.75)-5,4]);
                            translate([width-wallthick-gap-8.5,(depth/2)-((depth*.75)/2)+1.25-gap-wallthick,case_z+floorthick-5.75])
                                rotate([0,0,0]) cube([6,(depth*.75)-2,6]);
                        }
                    }
                    if(case_design == "fitted") {
                        difference() {
                            translate([(width/2)-wallthick-gap,
                                (depth/2)-wallthick-gap,case_z+floorthick/2-(lip)/2]) 
                                    cube_fillet_inside([width,depth,lip+floorthick], 
                                        vertical=[c_fillet,c_fillet,c_fillet,c_fillet], 
                                            top=[fillet,fillet,fillet,fillet,fillet], 
                                                bottom=[0,0,0,0], $fn=90);
                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z-floorthick-1]) 
                                    cube_fillet_inside([width-wallthick+tol,depth-wallthick+tol,lip+floorthick], 
                                        vertical=[c_fillet-1,c_fillet-1,c_fillet-1,c_fillet-1],
                                            top=[fillet,fillet,fillet,fillet,fillet],
                                                bottom=[0,0,0,0], $fn=90);
                        }
                    }
                    if(accessory_name != "none") {
                        for (i=[1:15:len(accessory_data[a[0]])-1]) {
                            class = accessory_data[a[0]][i];
                            type = accessory_data[a[0]][i+1];
                            loc_x = accessory_data[a[0]][i+2];
                            loc_y = accessory_data[a[0]][i+3];
                            loc_z = accessory_data[a[0]][i+4];
                            face = accessory_data[a[0]][i+5];
                            rotation = accessory_data[a[0]][i+6];
                            parametric = accessory_data[a[0]][i+7];
                            size_x = accessory_data[a[0]][i+8];
                            size_y = accessory_data[a[0]][i+9];
                            size_z = accessory_data[a[0]][i+10];
                            data_1 = accessory_data[a[0]][i+11];
                            data_2 = accessory_data[a[0]][i+12];
                            data_3 = accessory_data[a[0]][i+13];
                            data_4 = accessory_data[a[0]][i+14];
                            
                            if (class == "add1" && face == "top") {
                                parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,
                                    parametric,size_x,size_y,size_z,data_1,data_2,data_3,data_4);
                            }
                        }
                    }                  
                }
                // pcb standoff holes
                if(sbc_top_standoffs == true && top_standoff[5] != 4) {
                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
                        class = sbc_data[s[0]][i+1];
                        type = sbc_data[s[0]][i+2];
                        id = sbc_data[s[0]][i+3];
                        pcb_hole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
                        pcb_hole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
                        pcb_hole_z = sbc_data[s[0]][i+6];
                        pcb_hole_size = sbc_data[s[0]][i+9][0];                        
                        pcb_hole_pos = sbc_data[s[0]][i+10][4];

                        if (class == "pcbhole" && id == pcb_id && (pcb_hole_pos == "left_rear" || pcb_hole_pos == "left_front" || pcb_hole_pos == "right_rear" || pcb_hole_pos == "right_front")) {
                            #translate([pcb_hole_x,pcb_hole_y,top_height+1]) cylinder(d=6.5, h=top_height);
                        }
                    }
                }
                // extended standoff holes
                if(case_ext_standoffs == true) {
                    // right-rear standoff
                    if(width-pcb_loc_x-pcb_width >= 10 || pcb_loc_y >= 10) {
                        translate([width-(2*(wallthick+gap))-(c_fillet/2),(c_fillet/2),top_height+1]) 
                            cylinder(d=6.5, h=top_height);
                    }
                    // right-front standoff    
                    if((width-pcb_loc_x-pcb_width >= 10 && depth-pcb_loc_y-pcb_depth >= 10) || width-pcb_loc_x-pcb_width >= 10) {
                        translate([width-(c_fillet/2)-(2*(wallthick+gap)),
                            depth-(c_fillet/2)-(2*(wallthick+gap)),top_height+1]) cylinder(d=6.5, h=top_height);
                    }
                    // left-rear standoff
                    if(pcb_loc_x >= 10 || pcb_loc_y >= 10) {
                        translate([(c_fillet/2),(c_fillet/2),top_height+1]) cylinder(d=6.5, h=top_height);
                    }              
                    // left-front standoff
                    if(pcb_loc_x >= 10 || depth-pcb_loc_y-pcb_depth >= 10) {
                        translate([+(c_fillet/2),depth-(c_fillet/2)-(2*(wallthick+gap)),
                            top_height+1]) cylinder(d=6.5, h=top_height+1);
                    }
                }
            }           
            // pcb standoffs

            if(sbc_top_standoffs == true) {
                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
                        class = sbc_data[s[0]][i+1];
                        type = sbc_data[s[0]][i+2];
                        id = sbc_data[s[0]][i+3];
                        pcb_hole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
                        pcb_hole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
                        pcb_hole_z = sbc_data[s[0]][i+6];
                        pcb_hole_size = sbc_data[s[0]][i+9][0];                        
                        pcb_hole_pos = sbc_data[s[0]][i+10][4];
                    if(class == "pcbhole" && id == pcb_id && (pcb_hole_pos == "left_rear" || pcb_hole_pos == "left_front" || pcb_hole_pos == "right_rear" || pcb_hole_pos == "right_front")) {
                        if (pcb_hole_pos == "left_rear") {
                            normal_standoff = [top_standoff[0],
                                                top_height+pcb_loc_z+top_rear_left,
                                                top_standoff[2],
                                                top_standoff[3],
                                                top_standoff[4],
                                                top_standoff[5],
                                                top_standoff[6],
                                                top_standoff[7],
                                                top_standoff[8],
                                                top_standoff[9],
                                                top_standoff[10]];
                            translate([pcb_hole_x,pcb_hole_y,case_z]) standoff(normal_standoff);
                        }
                        if (pcb_hole_pos == "left_front") {
                            normal_standoff = [top_standoff[0],
                                                top_height+pcb_loc_z+top_front_left,
                                                top_standoff[2],
                                                top_standoff[3],
                                                top_standoff[4],
                                                top_standoff[5],
                                                top_standoff[6],
                                                top_standoff[7],
                                                top_standoff[8],
                                                top_standoff[9],
                                                top_standoff[10]];
                            translate([pcb_hole_x,pcb_hole_y,case_z]) standoff(normal_standoff);
                        }
                        if (pcb_hole_pos == "right_rear") {
                            normal_standoff = [top_standoff[0],
                                                top_height+pcb_loc_z+top_rear_right,
                                                top_standoff[2],
                                                top_standoff[3],
                                                top_standoff[4],
                                                top_standoff[5],
                                                top_standoff[6],
                                                top_standoff[7],
                                                top_standoff[8],
                                                top_standoff[9],
                                                top_standoff[10]];
                            translate([pcb_hole_x,pcb_hole_y,case_z]) standoff(normal_standoff);
                        }
                        if (pcb_hole_pos == "right_front") {
                            normal_standoff = [top_standoff[0],
                                                top_height+pcb_loc_z+top_front_right,
                                                top_standoff[2],
                                                top_standoff[3],
                                                top_standoff[4],
                                                top_standoff[5],
                                                top_standoff[6],
                                                top_standoff[7],
                                                top_standoff[8],
                                                top_standoff[9],
                                                top_standoff[10]];
                            translate([pcb_hole_x,pcb_hole_y,case_z]) standoff(normal_standoff);
                        }
                    }                    
                }
            }
            // extended standoffs
            if(case_ext_standoffs == true) {
                // right-rear standoff
                if(width-pcb_loc_x-pcb_width >= 10 || pcb_loc_y >= 10) {
                    translate([width-(2*(wallthick+gap))-(c_fillet/2),(c_fillet/2),case_z]) 
                        standoff(top_ext_standoff);
                }
                // right-front standoff    
                if((width-pcb_loc_x-pcb_width >= 10 && depth-pcb_loc_y-pcb_depth >= 10) 
                    || width-pcb_loc_x-pcb_width >= 10) {
                        translate([width-(c_fillet/2)-(2*(wallthick+gap)),
                            depth-(c_fillet/2)-(2*(wallthick+gap)),case_z]) standoff(top_ext_standoff);
                }
                // left-rear standoff
                if(pcb_loc_x >= 10 || pcb_loc_y >= 10) {
                    translate([(c_fillet/2),(c_fillet/2),case_z]) standoff(top_ext_standoff);
                }              
                // left-front standoff
                if(pcb_loc_x >= 10 || depth-pcb_loc_y-pcb_depth >= 10) {
                    translate([(c_fillet/2),depth-(c_fillet/2)-(2*(wallthick+gap)),
                        case_z]) standoff(top_ext_standoff);                
                }
            }
            // standoff sidewall support
            if(sidewall_support == true && sbc_top_standoffs == true) {
                if(pcb_width/pcb_depth >= 1.4) {
                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
                        class = sbc_data[s[0]][i+1];
                        type = sbc_data[s[0]][i+2];
                        id = sbc_data[s[0]][i+3];
                        pcb_hole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
                        pcb_hole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
                        pcb_hole_z = sbc_data[s[0]][i+6];
                        pcb_hole_size = sbc_data[s[0]][i+9][0];                        
                        pcb_hole_pos = sbc_data[s[0]][i+10][4];

                        if(pcb_hole_x!=0 && pcb_hole_y!=0) {
                            if (pcb_hole_pos == "left_rear") {
                                translate([pcb_hole_x-1, pcb_hole_y-(top_standoff[0]/2)-(gap-adj)-1.4,
                                    case_z-top_height-top_rear_left]) cube([2,gap+1.6,top_height+top_rear_left]);
                            }
                            if (pcb_hole_pos == "left_front") {
                                translate([pcb_hole_x-1, pcb_hole_y+(top_standoff[0]/2)-.6+adj,case_z-top_height-top_front_left]) 
                                    cube([2,gap+1.6,top_height+top_front_left]);
                            }
                            if (pcb_hole_pos == "right_rear") {
                                translate([pcb_hole_x-1, pcb_hole_y-(top_standoff[0]/2)-(gap-adj)-1.4,
                                    case_z-top_height-top_rear_right]) cube([2,gap+1.6,top_height+top_rear_right]);
                            }
                            if (pcb_hole_pos == "right_front") {
                                translate([pcb_hole_x-1, pcb_hole_y+(top_standoff[0]/2)-.6+adj,case_z-top_height-top_front_right]) 
                                    cube([2,gap+1.6,top_height+top_front_right]);
                            }
                        }
                    }
                }
                else {
                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
                        class = sbc_data[s[0]][i+1];
                        type = sbc_data[s[0]][i+2];
                        id = sbc_data[s[0]][i+3];
                        pcb_hole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
                        pcb_hole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
                        pcb_hole_z = sbc_data[s[0]][i+6];
                        pcb_hole_size = sbc_data[s[0]][i+9][0];                        
                        pcb_hole_pos = sbc_data[s[0]][i+10][4];

                        if(pcb_hole_x!=0 && pcb_hole_y!=0) {
                            if (i == 7 && sbc_model != "n2l") {
                                translate([pcb_hole_x-(top_standoff[0]/2)-gap-adj-1,pcb_hole_y-1,
                                    bottom_height-top_rear_left]) cube([gap+adj+1.6,2,top_height+top_rear_left]);
                            }
                            if (pcb_hole_pos == "left_rear" && sbc_model == "n2l") {
                                translate([pcb_hole_x-1, pcb_hole_y-(top_standoff[0]/2)-(gap-adj)-1.4,
                                    case_z-top_height-top_rear_left]) cube([2,gap+1.6,top_height+top_rear_left]);
                                
                            }
                            if (pcb_hole_pos == "left_front" && sbc_model != "n2l") {
                                translate([pcb_hole_x-(top_standoff[0]/2)-gap-adj-1,pcb_hole_y-1,
                                    bottom_height-top_front_left]) cube([gap+adj+1.6,2,top_height+top_front_left]);
                            }
                            if (pcb_hole_pos == "left_front" && sbc_model == "n2l") {
                                translate([pcb_hole_x-1, pcb_hole_y+(top_standoff[0]/2)-.6+adj,case_z-top_height-top_front_left]) 
                                    cube([2,gap+1.6,top_height+top_front_left]);
                                
                            }
                            if (pcb_hole_pos == "right_rear") {
                                translate([pcb_hole_x+(top_standoff[0]/2)-adj-.45,pcb_hole_y-1,
                                    bottom_height-top_rear_right]) cube([gap+adj+1.6,2,top_height+top_rear_right]);
                            }
                            if (pcb_hole_pos == "right_front") {
                                translate([pcb_hole_x+(top_standoff[0]/2)-adj-.45,pcb_hole_y-1,
                                    bottom_height-top_front_right]) cube([gap+adj+1.6,2,top_height+top_front_right]);
                            }
                        }
                    }
                }
            }
            // extended standoff sidewall support
            if(case_ext_standoffs == true && sidewall_support == true) {
                // right-rear standoff
                if(width-pcb_loc_x-pcb_width >= 10 || pcb_loc_y >= 10) {
                    translate([width-(2*(wallthick+gap))-(c_fillet/2)+(top_ext_standoff[0]/2)-.6,
                        (c_fillet/2)-1,bottom_height]) cube([gap+adj+2,2,top_height]);
                }
                // right-front standoff    
                if((width-pcb_loc_x-pcb_width >= 10 && depth-pcb_loc_y-pcb_depth >= 10) 
                    || width-pcb_loc_x-pcb_width >= 10) {
                        translate([width-(2*(wallthick+gap))-(c_fillet/2)+(top_ext_standoff[0]/2)-.6,
                            depth-(c_fillet/2)-(2*(wallthick+gap))-1,bottom_height])
                                cube([gap+adj+2,2,top_height]);
                }
                // left-rear standoff
                if(pcb_loc_x >= 10 || pcb_loc_y >= 10) {
                    translate([(c_fillet/2)-(wallthick+gap)-(top_ext_standoff[0]/2)+.6,(c_fillet/2)-1,
                        bottom_height]) cube([gap+adj+2,2,top_height]);
                }              
                // left-front standoff
                if(pcb_loc_x >= 10 || depth-pcb_loc_y-pcb_depth >= 10) {
                    translate([(c_fillet/2)-(wallthick+gap)-(top_ext_standoff[0]/2)+.6,
                        depth-(c_fillet/2)-(2*(wallthick+gap))-1, bottom_height]) 
                            cube([gap+adj+2,2,top_height]);
                }
            }
        }
        // subtractive accessories
        if(accessory_name != "none") {
            for (i=[1:15:len(accessory_data[a[0]])-1]) {
                class = accessory_data[a[0]][i];
                type = accessory_data[a[0]][i+1];
                loc_x = accessory_data[a[0]][i+2];
                loc_y = accessory_data[a[0]][i+3];
                loc_z = accessory_data[a[0]][i+4];
                face = accessory_data[a[0]][i+5];
                rotation = accessory_data[a[0]][i+6];
                parametric = accessory_data[a[0]][i+7];
                size_x = accessory_data[a[0]][i+8];
                size_y = accessory_data[a[0]][i+9];
                size_z = accessory_data[a[0]][i+10];
                data_1 = accessory_data[a[0]][i+11];
                data_2 = accessory_data[a[0]][i+12];
                data_3 = accessory_data[a[0]][i+13];
                data_4 = accessory_data[a[0]][i+14];
                
                if ((class == "sub" && face == "top") || class == "suball") {
                    if(accessory_highlight == false) {
                        parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,
                            parametric,size_x,size_y,size_z,data_1,data_2,data_3,data_4);
                    }
                    else {
                        #parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,
                            parametric,size_x,size_y,size_z,data_1,data_2,data_3,data_4);
                    }
                }
                // create openings for additive 
                if (class == "add2" && face == "top" && type == "standoff") {
                    parametric_move_sub("round",loc_x,loc_y,loc_z,face,rotation,parametric,
                        6.5,size_y,floorthick+1,data_1,data_2,data_3,data_4);
                }
                if ((class == "add1" || class == "add2") && face == "bottom" && type == "uart_holder") {
                    if(accessory_highlight == false) {
                        parametric_move_sub("microusb",loc_x+5.25,loc_y-5,loc_z+4,face,rotation,parametric,
                            0,0,0,data_1,data_2,data_3,data_4);
                    }
                    else {
                        #parametric_move_sub("microusb",loc_x+5.25,loc_y-5,loc_z+4,face,rotation,parametric,
                            0,0,0,data_1,data_2,data_3,data_4);
                    }
                }
                if ((class == "add1" || class == "add2") && face == "bottom" && type == "hc4_oled_holder") {
                    parametric_move_sub("rectangle",loc_x+1,loc_y+1.75,loc_z+26,face,rotation,
                        parametric,26.5,wallthick+gap+4,14.5,data_1,data_2,data_3,[.1,.1,.1,.1]);
                }
                if ((class == "add1" || class == "add2") && face == "top" && type == "button") {
                    if(data_3 == "recess") {
                        parametric_move_sub("sphere",loc_x,loc_y,loc_z,face,rotation,
                            parametric,size_x-1,size_y,size_z,data_1,data_2,data_3,0);
                    }
                    if(data_3 == "cutout") {
                        parametric_move_sub("rectangle",loc_x+10,loc_y+4,loc_z-adj,face,rotation,
                            parametric,size_x+2,size_y+1,size_z+2*adj,data_1,data_2,data_3,[.1,.1,.1,.1]);
                    }
                }
                if (class == "model" && face == "bottom" && type == "hk_boom" && 
                    rotation[0] == 90 && rotation[1] == 0 && rotation[2] == 0) {
                        parametric_move_sub("round",loc_x+11,loc_y-4,loc_z,face,[0,0,0],
                            parametric,5,size_y,80,data_1,data_2,data_3,data_4);
                        parametric_move_sub("slot",loc_x+37.5,loc_y-4.75,loc_z,face,[0,0,0],
                            parametric,6,14,80,data_1,data_2,data_3,data_4);
                }
            }
        }            
        // sbc openings
        if(sbc_highlight == true) {
            #translate([pcb_loc_x ,pcb_loc_y,bottom_height-pcb_z+pcb_loc_z-adj]) sbc(sbc_model,"default",0,"default","default",true);
        }
        else {
            translate([pcb_loc_x ,pcb_loc_y,bottom_height-pcb_z+pcb_loc_z-adj]) sbc(sbc_model,"default",0,"default","default",true);
        }
        // clean fillets
        if(case_design == "shell") {
            translate(([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,
                bottom_height+(top_height/2)]) ) 
                    cube_negative_fillet([width,depth,top_height], radius=-1,
                        vertical=[c_fillet,c_fillet,c_fillet,c_fillet], 
                            top=[fillet,fillet,fillet,fillet,fillet], 
                                bottom=[0,0,0,0], $fn=90);
        }
    }
    // additive accessories
    if(accessory_name != "none") {
        for (i=[1:15:len(accessory_data[a[0]])-1]) {
            class = accessory_data[a[0]][i];
            type = accessory_data[a[0]][i+1];
            loc_x = accessory_data[a[0]][i+2];
            loc_y = accessory_data[a[0]][i+3];
            loc_z = accessory_data[a[0]][i+4];
            face = accessory_data[a[0]][i+5];
            rotation = accessory_data[a[0]][i+6];
            parametric = accessory_data[a[0]][i+7];
            size_x = accessory_data[a[0]][i+8];
            size_y = accessory_data[a[0]][i+9];
            size_z = accessory_data[a[0]][i+10];
            data_1 = accessory_data[a[0]][i+11];
            data_2 = accessory_data[a[0]][i+12];
            data_3 = accessory_data[a[0]][i+13];
            data_4 = accessory_data[a[0]][i+14];
            
            if (class == "add2" && face == "top") {
                parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,
                    size_x,size_y,size_z,data_1,data_2,data_3,data_4);
            }
        }
    }
}