# proof.py
# By Chris Proctor
#
# Draws a proof sheet, showing each letter in `typeface`
# at two different sizes. 

# ---------------------------------------------------------
# ⚠️  You don't need to read or understand this code. 
# Some of the code uses techniques you haven't learned yet. 
# That said, feel free to poke around and don't hesistate to 
# ask if you're curious.

from turtle import *
from grid import draw_grid, GRID_ROWS
from superturtle.movement import no_delay
import typeface

GRID_COLOR = "lightgrey"
GRID_SIZE = 1
LETTER_COLOR = "black"
LETTER_SIZE = 3
LETTERS_PER_ROW = 7
ALPHABET = "abcdefghijklmnopqrstuvwxyz"

def fly(distance):
    penup()
    forward(distance)
    pendown()

def flyto(x, y):
    penup()
    goto(x, y)
    pendown()

def go_to_next_line(unit):
    right(180)
    fly((GRID_ROWS + 1) * LETTERS_PER_ROW * unit)
    left(90)
    fly((GRID_ROWS + 1) * unit)
    left(90)

def draw_proof_sheet(unit):
    rows = ((len(ALPHABET) - 1) // LETTERS_PER_ROW) + 1
    left(90)
    fly((GRID_ROWS + 1) * (rows - 1) * unit)
    right(90)
    for i, letter in enumerate(ALPHABET):
        if i > 0 and i % LETTERS_PER_ROW == 0:
            go_to_next_line(unit)
        color(GRID_COLOR)
        pensize(GRID_SIZE)
        draw_grid(unit)
        color(LETTER_COLOR)
        pensize(LETTER_SIZE)
        letter_function = getattr(typeface, f"draw_letter_{letter}")
        letter_function(unit)
        fly((GRID_ROWS + 1) * unit)
    fly((GRID_ROWS + 1) * (len(ALPHABET) % LETTERS_PER_ROW) * -unit)

with no_delay():
    flyto(-310, -60)
    draw_proof_sheet(10)
    flyto(-310, -260)
    draw_proof_sheet(5)
input()