/*

    standoff(standoff[radius,height,holesize,supportsize,supportheight,sink,style,i_dia,i_depth])

*/

/* standoff module
    standoff(standoff[radius,height,holesize,supportsize,supportheight,sink,style,reverse,insert_e,i_dia,i_depth])
        sink=0 none
        sink=1 countersink
        sink=2 recessed hole
        sink=3 nut holder
        sink=4 blind hole
        
        style=0 hex shape
        style=1 cylinder
*/
module standoff(stand_off){

    radius = stand_off[0];
    height = stand_off[1];
    holesize = stand_off[2];
    supportsize = stand_off[3];
    supportheight = stand_off[4];
    sink = stand_off[5];
    style = stand_off[6];
    reverse = stand_off[7];
    insert_e = stand_off[8];
    i_dia = stand_off[9];
    i_depth = stand_off[10];
    
    adjust = 0.1;
    
    difference (){ 
        union () { 
            if(style == 0 && reverse == 0) {
                rotate([0,0,30]) cylinder(d=radius*2/sqrt(3),h=height,$fn=6);
            }
            if(style == 0 && reverse == 1) {
                translate([0,0,-height]) rotate([0,0,30]) cylinder(d=radius*2/sqrt(3),h=height,$fn=6);
            }
            if(style == 1 && reverse == 0) {
                cylinder(d=radius,h=height,$fn=90);
            }
            if(style == 1 && reverse == 1) {
                translate([0,0,-height]) cylinder(d=radius,h=height,$fn=90);
            }
            if(reverse == 1) {
                translate([0,0,-supportheight]) cylinder(d=(supportsize),h=supportheight,$fn=60);
            }
            else {
                cylinder(d=(supportsize),h=supportheight,$fn=60);
            }
        }
        // hole
        if(sink <= 3  && reverse == 0) {
                translate([0,0,-adjust]) cylinder(d=holesize, h=height+(adjust*2),$fn=90);
        }
        if(sink <= 3  && reverse == 1) {
                translate([0,0,-adjust-height]) cylinder(d=holesize, h=height+(adjust*2),$fn=90);
        }
        // countersink hole
        if(sink == 1 && reverse == 0) {
            translate([0,0,-adjust]) cylinder(d1=6.5, d2=(holesize), h=3);
        }
        if(sink == 1 && reverse == 1) {
            translate([0,0,+adjust-2.5]) cylinder(d1=(holesize), d2=6.5, h=3);
        }
        // recessed hole
        if(sink == 2 && reverse == 0) {
            translate([0,0,-adjust]) cylinder(d=6.5, h=3);
        }
        if(sink == 2 && reverse == 1) {
            translate([0,0,+adjust-3]) cylinder(d=6.5, h=3);
        }
        // nut holder
        if(sink == 3 && reverse == 0) {
            translate([0,0,-adjust]) cylinder(r=3.3,h=3,$fn=6);     
        }
        if(sink == 3 && reverse == 1) {
            translate([0,0,+adjust-3]) cylinder(r=3.3,h=3,$fn=6);     
        }
        // blind hole
        if(sink == 4 && reverse == 0) {
            translate([0,0,2]) cylinder(d=holesize, h=height,$fn=90);
        }
        if(sink == 4 && reverse == 1) {
            translate([0,0,-height-2-adjust]) cylinder(d=holesize, h=height,$fn=90);
        }
        if(insert_e > 0 && reverse == 0) {
            translate([0,0,height-i_depth]) cylinder(d=i_dia, h=i_depth+adjust,$fn=90);
        }
        if(insert_e > 0 && reverse == 1) {
            translate([0,0,-height-adjust]) cylinder(d=i_dia, h=i_depth+adjust,$fn=90);
        }
    }
}