# Polygons

Using my ‘getCirclePos()’ function I thought of not only creating a circle. Dividing 360° by n, you get x°. Now x° is a n-th of a circle. If I connect n points with each other, always adding x° and starting from 0°, I get a n-gon. ‘Polygons’ does exactly this. The minimum n-gon-count is 3, the maximum 1000.

#### Usage

• ‘w’ increases the polygon point count
• ‘s’ decreases up the polygon point count
• ‘up’ does what ‘w’ does, but you can hold it
• ‘down’ does what ‘s’ does, but you can hold it
• ‘r’ starts the random movement (polygon count changes randomly)

``````# Python 2.7.7 Code
# Pygame 1.9.1 (for Python 2.7.7)
# Jonathan Frech 26th of March, 2015
#         edited 31st of March, 2015``````

``````# gets the position on a circle
# circle center                           : '_pos'
# angle from center to point on the circle: '_angle'
return [
]

# tick function
def tick():
# handle events
for event in pygame.event.get():
# quit
if event.type == pygame.QUIT:
sys.exit()

# get 'main.KEYSDOWN'
if event.type == pygame.KEYUP:
if event.key in main.KEYSDOWN:
main.KEYSDOWN.remove(event.key)

if event.type == pygame.KEYDOWN:
if event.key not in main.KEYSDOWN:
main.KEYSDOWN.append(event.key)

# key 'w' and key 's' control n-gon
if event.key == pygame.K_w:
main.COUNT += 1
if event.key == pygame.K_s:
main.COUNT -= 1

# random movement toggle
if event.key == pygame.K_r:
if main.RAND:
main.RAND = False
else:
main.RAND = True

# key 'UP' and key 'DOWN' control n-gon
# (here you can hold the keys)
if pygame.K_UP in main.KEYSDOWN:
main.COUNT += 1
if pygame.K_DOWN in main.KEYSDOWN:
main.COUNT -= 1

# random movement
if main.RAND:
main.COUNT += getAOne()

# n-gon bounds
if main.COUNT  1000:
main.COUNT = 1000

# render function
def render():
# fill
main.SCREEN.fill([0, 0, 0])
main.SURF.fill([50, 50, 100])

# define colors used
cols = [[255, 255, 255], [0, 0, 0]]
#cols = [[255, 0, 0], [0, 255, 0], [0, 0, 255], [255, 255, 0], [0, 255, 255], [255, 0, 255], [255, 255, 255], [0, 0, 0]]
cCol = 0

# draw the lines for the n-gon
lastPos = None
firstPos = None
for _ in range(0, main.COUNT):
pos = getCirclePos(main.MIDDLE, (main.WIDTH + main.HEIGHT) / 2 / 3, 360. / main.COUNT * _ + (360. / main.COUNT/2)),
if firstPos == None:
firstPos = pos
if lastPos != None:
pygame.draw.line(main.SURF, cols[cCol], lastPos, pos, 2)
# draw line to the center
#pygame.draw.line(main.SURF, cols[cCol], pos, main.MIDDLE)
cCol += 1
if cCol > len(cols) - 1:
cCol = 0

lastPos = pos

pygame.draw.line(main.SURF, cols[cCol], pos, firstPos, 2)
# draw line to the center
#pygame.draw.line(main.SURF, cols[cCol], firstPos, main.MIDDLE)

# display the n in n-gon
text = main.FONT.render(str(main.COUNT) + "-gon", 1, cols[0])
rect = text.get_rect()
pos = [
0,
main.HEIGHT - rect.bottom
]
main.SURF.blit(text, pos)

# scale
main.SCREEN.blit(pygame.transform.scale(main.SURF, [int(main.WIDTH * main.SCALE), int(main.HEIGHT * main.SCALE)]), [0, 0])
# flip
pygame.display.flip()

# run function (uses 'tick()' and 'render()')
def run():
ticksPerSecond = 60
lastTime = time.time() * 1000000000
nsPerTick =  1000000000.0 / float(ticksPerSecond)

ticks = 0
frames = 0

lastTimer = time.time() * 1000
delta = 0.0

while True:
now = time.time() * 1000000000
delta += float(now - lastTime) / float(nsPerTick)
lastTime = now
shouldRender = False

while delta >= 1:
ticks += 1
main.TICKS += 1
tick()
delta -= 1
shouldRender = True

if shouldRender:
frames += 1
render()

if time.time() * 1000 - lastTimer >= 1000:
lastTimer += 1000

# debug
#print("Frames: " + str(frames) + ", ticks: " + str(ticks))

frames = 0
ticks = 0

# dummy class for global variables
class dummy():
pass

# init
import pygame, sys, time, math, os, random
pygame.font.init()

main = dummy()
main.TICKS = 0

main.RES = 1
main.WIDTH = 1080 / main.RES
main.HEIGHT = 720 / main.RES
main.MIDDLE = [main.WIDTH / 2, main.HEIGHT / 2]
main.SIZE = [main.WIDTH, main.HEIGHT]
main.SURF = pygame.Surface(main.SIZE)

main.SCALE = 1 * main.RES
main.SCALEDSIZE = [int(main.WIDTH * main.SCALE), int(main.HEIGHT * main.SCALE)]
main.SCREEN = pygame.display.set_mode(main.SCALEDSIZE)
pygame.display.set_caption("Polygons")

main.KEYSDOWN = []
main.FONT = pygame.font.Font(None, int(20 / main.RES))
main.COUNT = 2
main.RAND = False

run()``````