/**
 * Models and variables according to SFF-8300 specification.
 *
 * @author  Joaquín Fernández
 * @url     https://gitlab.com/joaquinfq/openscad/blob/master/Modules/Models/SFF/8300.scad
 * @license CC-BY-NC-4.0
 *
 * @see     SFF-8300 3.5" Form Factor Drives
 */
//----------------------------------------------------------
use <./box.scad>
//----------------------------------------------------------
/**
 * Returns the specifications of the measurements according to SFF-8300.
 *
 * @param {Float} tolerance Tolerance to be used to adjust the measurements.
 * @param {Integer} type Type of unit (0: small, 1: medium, 2: large).
 *
 * @return {Float[]}
 */
function sff8300(tolerance = 0, type = 1) = [
      3.00, // Screw diameter
     type == 0 ? 42.00 : (type == 1 ? 26.10 : 17.80) + tolerance,
    147.00 + tolerance,
    101.60 + tolerance,
     95.25 + tolerance,
      3.18,
     44.45 + tolerance / 2,
     41.28 + tolerance / 2,
     28.50 + tolerance / 2,
    101.60 + tolerance / 2,
      6.35 + tolerance / 2,
      0.25,
      0.50,
     76.20 + tolerance / 2
];
//----------------------------------------------------------
/**
 * Draw a model of a 3.5" drive according to the SFF-8300 specification.
 *
 * This model allows the volume to be removed later to create a slot
 * like those used in PC cases.
 *
 * @param {Float} length Length of the drive to be generated.
 * @param {Float} thickness Thickness of the block where the model will be inserted.
 * @param {Float} screw Diameter of the screw to be used.
 * @param {Float} slot Length of the slot where the screws will be inserted.
 * @param {Float} tolerance Value to be used to adjust the standard dimensions.
 * @param {Integer} type Type of unit (0: small, 1: medium, 2: large).
 */
module sff8300Model(length = 0, thickness = 5, screw = 0, slot = 15, tolerance = 0.3, type = 0)
{
    _A = sff8300(tolerance, type);
    modelBox(
        _A[3],
        _A[1],
        length ? length : _A[2],
        thickness,
        screw ? screw : _A[0],
        slot,
        [
            [ _A[10], _A[2] - _A[8]         ],
            [ _A[10], _A[2] - _A[8] - _A[9] ]
        ],
        [
            [ _A[5],         _A[2] - _A[7]          ],
            [ _A[5],         _A[2] - _A[7] - _A[6]  ],
            [ _A[5],         _A[2] - _A[7] - _A[13] ],
            [ _A[3] - _A[5], _A[2] - _A[7]          ],
            [ _A[3] - _A[5], _A[2] - _A[7] - _A[6]  ],
            [ _A[3] - _A[5], _A[2] - _A[7] - _A[13] ]
        ]
    );
}