CS1101S Lecture 2

import {stackn,rcross, sail, heart, stack, show, quarter_turn_right, quarter_turn_left} from "rune";


#1 CREATING A NEW FUNCTION
function turn_upside_down(rune) {
    return quarter_turn_right(quarter_turn_right(rune));
}

show (turn_upside_down(heart));

***show is a function--> brackets required.

#2 STACK FUNCTION (for only 2 runes, stacks vertically)
show (stack(heart,sail)); 

2A: stacking more than 2--> Apply stack multiple times
show (stack(heart, stack(heart, heart)));
/SIDE BY SIDE with STACK/

2B: Stacking something n times
import {stackn} from "rune";
show (stackn (5, heart));

#3 Side by Side
function beside (rune1, rune2) {
    return (quarter_turn_right(stack(quarter_turn_left(rune2), quarter_turn_left(rune1))));
}

show (beside (heart, heart));

#4 RECTANGULAR QULITING
const my_quilt = (stackn(7,(quarter_turn_left(stackn(5, quarter_turn_right(heart))))));

show(my_quilt);
function quilt (n , m , rune) {
    return 
}

#5 Creating a function for rectangular quilting (abstraction)

function quilt (n , m , rune) {
    return stackn(m , 
        quarter_turn_left(
            stackn(n, quarter_turn_right(
                rune))));
}

show (quilt(10, 10, heart));

#6 MAKE CROSS FUNCTION
import {turn_upside_down, beside} from "rune";


function make_cross(rune) {
    return beside (stack(quarter_turn_right(rune), rune), stack(turn_upside_down(rune), quarter_turn_left(rune)));
}

show(make_cross(make_cross(make_cross(make_cross(make_cross(rcross))))));

/Basically, the make_cross function multiplies the "set" by 2x on each side (l and b) every time you use it, e.g.: 1,2,4,8,16/

possible to apply make cross functions many times
since it is a transformation.