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Copy pathSortingAlgorithm.py
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192 lines (151 loc) · 6.57 KB
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import pygame
import random
import math
pygame.init()
class VisualizerData:
DARK_BLUE = (36, 90, 190)
ORANGE = (255, 140, 0)
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 200, 0)
RED = (200, 0, 0)
GREY = (160, 160, 160)
BACKGROUND_COLOR = (0, 0, 0)
SIDE_PADDING = 100
TOP_PADDING = 140
GRADIENT_COLORS = [
(100, 149, 237),
(123, 104, 238),
(72, 209, 204)
]
FONT = pygame.font.SysFont('arial', 18)
LARGE_FONT = pygame.font.SysFont('arial', 26)
def __init__(self, width, height, numbers):
self.width = width
self.height = height
self.window = pygame.display.set_mode((width, height))
pygame.display.set_caption("Sort Visualizer")
self.set_numbers(numbers)
self.start_btn = None
self.newlist_btn = None
self.asc_btn = None
self.desc_btn = None
def set_numbers(self, numbers):
self.numbers = numbers
self.min_val = min(numbers)
self.max_val = max(numbers)
self.block_width = round((self.width - self.SIDE_PADDING) / len(numbers))
self.block_height = math.floor((self.height - self.TOP_PADDING) / (self.max_val - self.min_val))
self.start_x = self.SIDE_PADDING // 2
def draw_button(window, x, y, width, height, text, font, bg_color, text_color):
rect = pygame.Rect(x, y, width, height)
pygame.draw.rect(window, bg_color, rect)
text_surf = font.render(text, True, text_color)
text_rect = text_surf.get_rect(center=rect.center)
window.blit(text_surf, text_rect)
return rect
def draw(visualizer, algo_name, ascending):
visualizer.window.fill(visualizer.BACKGROUND_COLOR)
title = visualizer.LARGE_FONT.render(f"{algo_name} - {'Ascending' if ascending else 'Descending'}", 1, visualizer.DARK_BLUE)
visualizer.window.blit(title, (visualizer.width / 2 - title.get_width() / 2, 10))
visualizer.start_btn = draw_button(visualizer.window, 100, 60, 120, 40, "Start", visualizer.FONT, visualizer.GREEN, visualizer.BLACK)
visualizer.newlist_btn = draw_button(visualizer.window, 250, 60, 120, 40, "New List", visualizer.FONT, visualizer.ORANGE, visualizer.BLACK)
visualizer.asc_btn = draw_button(visualizer.window, 400, 60, 100, 40, "Ascending", visualizer.FONT, visualizer.DARK_BLUE, visualizer.WHITE)
visualizer.desc_btn = draw_button(visualizer.window, 520, 60, 100, 40, "Descending", visualizer.FONT, visualizer.RED, visualizer.WHITE)
draw_bars(visualizer)
pygame.display.update()
def draw_bars(visualizer, color_positions={}, clear_bg=False):
numbers = visualizer.numbers
if clear_bg:
clear_rect = (visualizer.SIDE_PADDING // 2, visualizer.TOP_PADDING,
visualizer.width - visualizer.SIDE_PADDING,
visualizer.height - visualizer.TOP_PADDING)
pygame.draw.rect(visualizer.window, visualizer.BACKGROUND_COLOR, clear_rect)
for i, val in enumerate(numbers):
x = visualizer.start_x + i * visualizer.block_width
y = visualizer.height - (val - visualizer.min_val) * visualizer.block_height
color = visualizer.GRADIENT_COLORS[i % 3]
if i in color_positions:
color = color_positions[i]
pygame.draw.rect(visualizer.window, color,
(x, y, visualizer.block_width, visualizer.height))
if clear_bg:
pygame.display.update()
def generate_random_list(n, max_value, min_value):
return [random.randint(min_value, max_value) for _ in range(n)]
def merge_sort(visualizer, ascending=True):
numbers = visualizer.numbers
def merge_sort_recursive(start, end):
if end - start <= 1:
return
mid = (start + end) // 2
yield from merge_sort_recursive(start, mid)
yield from merge_sort_recursive(mid, end)
merged = []
left_idx = start
right_idx = mid
while left_idx < mid and right_idx < end:
left_val = numbers[left_idx]
right_val = numbers[right_idx]
if (left_val <= right_val and ascending) or (left_val > right_val and not ascending):
merged.append(left_val)
left_idx += 1
else:
merged.append(right_val)
right_idx += 1
while left_idx < mid:
merged.append(numbers[left_idx])
left_idx += 1
while right_idx < end:
merged.append(numbers[right_idx])
right_idx += 1
for i, value in enumerate(merged):
numbers[start + i] = value
draw_bars(visualizer, {start + i: visualizer.GREEN}, True)
yield True
yield from merge_sort_recursive(0, len(numbers))
def main():
run = True
clock = pygame.time.Clock()
num_elements = 60
max_value = 100
min_value = 10
numbers = generate_random_list(num_elements, max_value, min_value)
visualizer = VisualizerData(800, 600, numbers)
sorting = False
ascending = True
sorting_algorithm = merge_sort
algorithm_name = "Merge Sort"
sort_generator = None
while run:
clock.tick(60)
if sorting:
try:
next(sort_generator)
except StopIteration:
sorting = False
else:
draw(visualizer, algorithm_name, ascending)
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
if event.type == pygame.MOUSEBUTTONDOWN:
pos = pygame.mouse.get_pos()
if visualizer.start_btn.collidepoint(pos) and not sorting:
sorting = True
sort_generator = sorting_algorithm(visualizer, ascending)
elif visualizer.newlist_btn.collidepoint(pos):
numbers = generate_random_list(num_elements, max_value, min_value)
visualizer.set_numbers(numbers)
sorting = False
elif visualizer.asc_btn.collidepoint(pos) and not sorting:
ascending = True
elif visualizer.desc_btn.collidepoint(pos) and not sorting:
ascending = False
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_m and not sorting:
sorting_algorithm = merge_sort
algorithm_name = "Merge Sort"
pygame.quit()
if __name__ == "__main__":
main()