include <../modules/bidirectional_idt.scad>
include <../modules/parameter_text.scad>
include <../modules/wafer.scad>

// ================= README =================
// these are the normal parameters used by
// each one of the layout scripts
// however they do dont directly use them
// and instead have thier own copy
//
// this was done in order to have more control
// over each of the scripts themsevels 
// allowing each to have even more parameters
// and having them show up in the open scad
// parameters window
// ================= README =================


// ================= openscad prams =================

// min angle
$fa = 0.1;

// min size
$fs = 0.01;
// ================= openscad prams =================

// ================= meta =================
// version number of the current script
SCRIPT_VERSION="0.0.1";

// font for layout
FONT="Ubuntu Sans Mono:style=Regular";

// the test number ref number for this set of IDTs
test_number = 1;

// this is needed due to the min size value
// a pre scaler for the given values
scale_unit = 1e3;

// ================= meta =================

// ================= IDT =================

// the underlying substrate
substrate = "SI";

// linbo
// the acoustic wave speed in the substrate
c = 3992.0;
// si
// c = 3159.0;

// the target frequency of the IDT
freq = 10.0e6;

// the distance between the input and output IDT
// should be between 100-200
distance = 50;

// the number of fingers the IDT has
n_fingers = 50;

// the length of the figure or aperture should be 50-70
finger_length = 50; 

// the gap between both sides of the IDT (should be used for tweaking)
gap = 0;

// the thickness of the wire the connects all the fingers
thickness = 0;

// adds an ID number to an IDT, useful if you have multiple on a wafer
has_id_number = false;
// ================= IDT =================

// ================= bond pad =================

// the length of the bond pad leg from the edge of the IDT to the center of the bond pad
leg_length = 0.003;

// the width of the leg
leg_width = 0.00001875;

// the angle the leg comes off from the IDT,
// positive angle means the leg is angled away
// negitive angle means the leg is angled inwards
leg_angle = 10;

// the size of the bond pad
size = 0.002;

// the shape of the bond pad (not implemented)
bond_pad_shape = "square";

// ================= bond pad =================

// ================= text =================

info_block_offset_x=25;
info_block_offset_y=10;
// total scale of infoblock
info_block_scale=0.3;

// the text size of the heading in the info block
title_text_size = 4;

// the size of all the sub items in the info block
prop_text_size = 2.5;

// the size of the ID numbers in on the IDTS
id_text_size = 1;

// ================= text =================

// ================= wafers =================
// the size of the wafer in inchs (why inch and not metric like everything else because its standard)
wafer_size_inch = 4;
// ================= wafers =================



// ================= IDT Pos =================

// the x offset of the IDT from the center
idt_x_offset = 0;
// the y offset of the IDT from the center
idt_y_offset = 0;

// ================= IDT Pos =================

module params() {
    parameter_text(
        str("IDT ", substrate, "#", test_number),
        [
            str("c          (ms): ", c),
            str("freq       (Hz): ", freq),
            str("distance       : ", distance),
            str("n_fingers      : ", n_fingers),
            str("finger_length  : ", finger_length),
            str("gap            : ", gap),
            str("thickness      : ", thickness),
            str("leg_length     : ", leg_length),
            str("leg_angle      : ", leg_angle),
            str("size           : ", size),
            str("feat. size (mm): ", (c/freq)*1e3 / 4),
            str("version        : ", SCRIPT_VERSION)
        ]
    );
}

translate([info_block_offset_x, -info_block_offset_y, 0])
scale([info_block_scale, info_block_scale, info_block_scale])
params();

wafer(wafer_size_inch*25.4);

translate([0, 0, 0])
bi_directional_idt(
    c, 
    freq, 
    n_fingers, 
    distance, 
    finger_length, 
    gap, 
    thickness, 
    post_scale=scale_unit,
    has_bond_pads = true,
    bond_pad_angle = leg_angle,
    bond_pad_leg_width = leg_width,
    bond_pad_leg_length = leg_length,
    bond_pad_size = size,
    center = true,
    echo_stats = true
);