// top plane:
//round_psu_cable_fan_plane(360, 250, 6.5, 300, 180, 10, 41, 83, 90, 90);

// middle plane:
// round_psu_mainboard_plane(360, 250, 6.5, 300, 180, 10, 41, 83);

// bottom plane:
round_base_plane(360, 250, 6.5, 300, 180, 10);

// HDD plane:
// round_psu_cable_hdd_plane(360, 250, 6.5, 300, 180, 10, 41, 83, 90, 90);



RESOLUTION=36;

/*
 * Simple, base angular plane with four holes
 */
module base_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y) {
    difference() {
        // base square
        square([width, height]);
        
        // holes
        translate([(width-hole_spacing_x)/2, (height-hole_spacing_y)/2])
        circle(d=hole_size, $fn=RESOLUTION);
        translate([hole_spacing_x+(width-hole_spacing_x)/2, (height-hole_spacing_y)/2])
        circle(d=hole_size, $fn=RESOLUTION);
        translate([(width-hole_spacing_x)/2, height-(height-hole_spacing_y)/2])
        circle(d=hole_size, $fn=RESOLUTION);
        translate([hole_spacing_x+(width-hole_spacing_x)/2, height-(height-hole_spacing_y)/2])
        circle(d=hole_size, $fn=RESOLUTION);
    }
}

/*
 * base_plane(...) with rounded edges, using helper function __radius_cutout(...)
 */
module round_base_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius) {
    intersection() {
        base_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y);
        __round_square(width, height, radius);
    }
}

/*
 * Rounded base plane with cutout for the PSU
 */
module round_psu_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height) {
   difference() {
       round_base_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius);

       translate([width-psu_width, height/2-psu_height/2])
       square([psu_width, psu_height]);
   }
}

/*
 * Rounded base plane with cutout for cables
 */
module round_cable_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, cable_width, cable_height) {
   difference() {
       round_base_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius);

       difference() {
           union() {
                translate([0, height/2-cable_height/2])
                square([cable_width, cable_height]);

                // Outer rounds
                translate([radius, height/2-cable_height/2-radius])
                rotate([0, 0, 90])
                __radius_cutout(radius);
                translate([radius, height/2+cable_height/2+radius])
                rotate([0, 0, 180])
                __radius_cutout(radius);
           }

           // Inner rounds
           translate([cable_width-radius, height/2+cable_height/2-radius])
           __radius_cutout(radius);
           translate([cable_width-radius, height/2-cable_height/2+radius])
           rotate([0, 0, 270])
           __radius_cutout(radius);
       }
   }
}

/*
 * Base plane with combined cutouts: for PSU and for cables
 */
module round_psu_cable_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height, cable_width, cable_height) {
    intersection() {
        round_psu_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height);
        round_cable_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, cable_width, cable_height);
    }
}

/*
 * Base plane with combined cutouts: for PSU and mainboard bearings
 */
module round_psu_mainboard_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height) {
    difference() {
        round_psu_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height);
        rotate([0, 0, 180])
        translate([-310, -244])
        __mainboard_bearings(230, 244);
    }
}

/*
 * Base plane with cutouts for two fans in the center
 */
module round_fan_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius) {
    difference() {
        round_base_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius);

        // lower fan
        translate([width/2-120/2, height/4-120/2])
        __fan_cutout(120, 105, 5);
        // upper fan
        translate([width/2-120/2, height*3/4-120/2])
        __fan_cutout(120, 105, 5);
    }
}

/*
 * Base plane with cutouts for psu, cables and fans
 */
module round_psu_cable_fan_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height, cable_width, cable_height) {
    intersection() {
        round_psu_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height);
        round_cable_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, cable_width, cable_height);
        round_fan_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius);
    }
}

/*
 * HDD bearing plane with cutouts for psu and cables
 */
module round_psu_cable_hdd_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height, cable_width, cable_height) {
    difference() {
        intersection() {
            round_psu_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, psu_width, psu_height);
            round_cable_plane(width, height, hole_size, hole_spacing_x, hole_spacing_y, radius, cable_width, cable_height);
        }

        // lower HDD 115
        translate([width/2-145/2, height/2 - 10])
        rotate([0, 0, -90])
        __35_hdd_bearings(5);

        // upper HDD 235
        translate([width/2-145/2, height/2 - 10 + 120])
        rotate([0, 0, -90])
        __35_hdd_bearings(5);
    }
}

/*
 * Helper function for round edges
 */
module __radius_cutout(radius) {  
    difference() {
        translate([radius/2, radius/2, 0])
        square([radius, radius], center=true);
        circle(radius, $fn=RESOLUTION);
    }    
}

/*
 * Helper function for square with round edges
 */
module __round_square(width, height, radius) {
    difference() {
        square([width, height]);
        translate([width-radius, height-radius])
        __radius_cutout(radius);
        translate([radius, height-radius])
        rotate([0, 0, 90])
        __radius_cutout(radius);
        translate([radius, radius])
        rotate([0, 0, 180])
        __radius_cutout(radius);
        translate([width-radius, radius])
        rotate([0, 0, 270])
        __radius_cutout(radius);
    }
}

/*
 * Helper function for fan cutout
 */
module __fan_cutout(outer_size, inner_size, bearing_size) {
    // Bearing
    translate([outer_size-(outer_size-inner_size)/2, outer_size-(outer_size-inner_size)/2])
    circle(d=bearing_size, $fn=RESOLUTION);
    translate([(outer_size-inner_size)/2, outer_size-(outer_size-inner_size)/2])
    circle(d=bearing_size, $fn=RESOLUTION);
    translate([outer_size-(outer_size-inner_size)/2, (outer_size-inner_size)/2])
    circle(d=bearing_size, $fn=RESOLUTION);
    translate([(outer_size-inner_size)/2, (outer_size-inner_size)/2])
    circle(d=bearing_size, $fn=RESOLUTION);

    // middle squares
    translate([0, outer_size-inner_size, 0])
    __round_square(outer_size, inner_size-(outer_size-inner_size), 5);
    //translate([outer_size-inner_size, 0, 0])
    //__round_square(inner_size-(outer_size-inner_size), outer_size, 5);

    // round edges between middle squares

    /*translate([outer_size-inner_size-2.5, outer_size-inner_size-2.5, 0])
    __radius_cutout(2.5);

    translate([outer_size-(outer_size-inner_size)+2.5, outer_size-inner_size-2.5, 0])
    rotate([0, 0, 90])
    __radius_cutout(2.5);

    translate([outer_size-(outer_size-inner_size)+2.5, outer_size-(outer_size-inner_size)+2.5, 0])
    rotate([0, 0, 180])
    __radius_cutout(2.5);

    translate([outer_size-inner_size-2.5, outer_size-(outer_size-inner_size)+2.5, 0])
    rotate([0, 0, 270])
    __radius_cutout(2.5);
    */
}

module __mainboard_bearings(mainboard_width, mainboard_height) {
    // measured from a microATX (970M Pro3):
    // * mainboard_width=230;
    // * mainboard_height=244;
    bearing_size=4;

    // bottom row
    translate([0, 5]) {
        // inofficial hole added by ASROCK (970M Pro3)
        // translate([5, 0])
        // circle(d=bearing_size, $fn=RESOLUTION);

        translate([63, 0])
        circle(d=bearing_size, $fn=RESOLUTION);

        translate([195, 0])
        circle(d=bearing_size, $fn=RESOLUTION);
    }

    // middle row
    translate([0, mainboard_height-80]) {
        translate([63, 0])
        circle(d=bearing_size, $fn=RESOLUTION);

        translate([mainboard_width-10, 0])
        circle(d=bearing_size, $fn=RESOLUTION);
    }

    // middle top row
    translate([63, mainboard_height-14])
    circle(d=bearing_size, $fn=RESOLUTION);

    // nearly top left hole
    translate([mainboard_width-10, mainboard_height-34])
    circle(d=bearing_size, $fn=RESOLUTION);

    // top left hole
    // inofficial hole added by ASROCK (970M Pro3)
    // translate([5, mainboard_height-5])
    // circle(d=bearing_size, $fn=RESOLUTION);
}

module __35_hdd_bearings(bearing_size) {
    // side bearings on 3.5" disks are at 0, 60mm and 102mm (SIC!) each, 15mm shifted
    // 3.5" width is 100mm adding +10mm on each side for the clamps/holder

    // bottom screw row @0mm (+15mm shift)
    translate([0, 15]) {
        translate([-5, 0])
        circle(d=bearing_size);
        translate([ 105, 0])
        circle(d=bearing_size);
    }

    // mid screw row @60mm (+15mm shift)
    translate([0, 75]) {
        translate([-5, 0])
        circle(d=bearing_size);
        translate([ 105, 0])
        circle(d=bearing_size);
    }

    // top screw row @102mm (+15mm shift)
    translate([0, 117]) {
        translate([-5, 0])
        circle(d=bearing_size);
        translate([ 105, 0])
        circle(d=bearing_size);
    }

    // 3.5" HDD dummy
    // square([100, 145]);

    // cable slots
    translate([10, 145])
    __round_square(80, 10, 5);
}