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"""Demo of using cursor codes to create animations."""
from easyansi import colors as c
from easyansi import screen as s
from easyansi import cursor as cur
from easyansi import drawing as d
from easyansi.screen import prnt
from time import sleep
DEFAULT_COLOR = c.color_code(c.WHITE, c.BLACK)
HEADING_COLOR = c.color_code(c.BRIGHT_YELLOW, c.BLACK)
SUB_HEADING_COLOR = c.color_code(c.BRIGHT_RED, c.BLACK)
PAGE_NUM_COLOR = c.color_code(c.BRIGHT_GREEN, c.BLACK)
LINE_COLOR = c.color_code(c.BRIGHT_BLUE, c.BLACK)
FOOTER_COLOR = c.color_code(c.BRIGHT_WHITE, c.BLACK)
SCREEN_WIDTH, SCREEN_HEIGHT = s.get_size()
HEADING = "Animations Demo"
TOTAL_PAGES = 1
def main():
try:
animations_demo()
except KeyboardInterrupt:
# The user pressed Ctrl+C to get here
pass
finally:
# Return the terminal to the users default state
cur.show()
c.reset()
print("\nCompleted")
def pause():
cur.locate(0, SCREEN_HEIGHT - 1)
prnt(FOOTER_COLOR)
input("Press ENTER to continue, or CTRL+C to quit ")
def clear_screen(sub_heading, page_num):
global SCREEN_WIDTH, SCREEN_HEIGHT
SCREEN_WIDTH, SCREEN_HEIGHT = s.get_size()
prnt(DEFAULT_COLOR)
# When you clear the screen, it will set the whole screen to the current
# foreground and background color that is currently set.
s.clear()
prnt(HEADING_COLOR + HEADING + ": ")
prnt(SUB_HEADING_COLOR + sub_heading)
page_text = str(page_num) + " / " + str(TOTAL_PAGES)
cur.locate(SCREEN_WIDTH - len(page_text), 0)
prnt(PAGE_NUM_COLOR + page_text)
cur.locate(0, 1)
prnt(LINE_COLOR)
d.hline(SCREEN_WIDTH)
cur.locate(0, SCREEN_HEIGHT - 2)
d.hline(SCREEN_WIDTH)
def animations_demo():
cur.hide()
clear_screen("Watch the Fun", 1)
draw_star_spiral(15, 10)
sleep(1)
draw_star_burst(40, 10)
sleep(1)
draw_star_clock(65, 10)
sleep(1)
cur.show()
pause()
def draw_star_spiral(x, y):
"""Draw the star in a spiral pattern."""
center_color = c.BRIGHT_CYAN
cross_color = c.BRIGHT_MAGENTA
x_color = c.BRIGHT_GREEN
label_color = c.CYAN
speed = 0.1
# Label the star
cur.locate(x - 2, y + 7)
c.color(label_color)
prnt("Spiral")
cur.locate(x - 3, y + 8)
prnt("Pattern")
# Draw the star
cur.locate(x, y)
c.color(center_color)
slow_prnt("*", speed)
for i in range(0, 5):
# right
c.color(cross_color)
slow_prnt("*", speed)
# bottom right
cur.down(1 + i)
cur.left(1)
c.color(x_color)
slow_prnt("*", speed)
# bottom
cur.left(2 + i)
c.color(cross_color)
slow_prnt("*", speed)
# bottom left
cur.left(2 + i)
c.color(x_color)
slow_prnt("*", speed)
# left
cur.up(1 + i)
cur.left(1)
c.color(cross_color)
slow_prnt("*", speed)
# upper left
cur.up(1 + i)
cur.left(1)
c.color(x_color)
slow_prnt("*", speed)
# upper
if i > 0:
cur.right(i)
c.color(cross_color)
slow_prnt("*", speed)
# upper right
if i > 0:
cur.right(i)
c.color(x_color)
slow_prnt("*", speed)
# right
cur.down(1 + i)
def draw_star_burst(x, y):
"""Draw the star in a burst pattern."""
center_color = c.BRIGHT_YELLOW
cross_color = c.BRIGHT_RED
x_color = c.BRIGHT_BLUE
label_color = c.CYAN
# Label the star
cur.locate(x - 2, y + 7)
c.color(label_color)
prnt("Burst")
cur.locate(x - 3, y + 8)
prnt("Pattern")
# Draw the star
cur.locate(x, y)
c.color(center_color)
slow_prnt("*")
for i in range(0, 5):
output = ""
output += c.color_code(cross_color)
# right
output += cur.locate_code(x + i + 1, y)
output += "*"
# bottom
output += cur.locate_code(x, y + i + 1)
output += "*"
# left
output += cur.locate_code(x - i - 1, y)
output += "*"
# top
output += cur.locate_code(x, y - i - 1)
output += "*"
# top right
output += c.color_code(x_color)
output += cur.locate_code(x + i + 1, y - i - 1)
output += "*"
# bottom right
output += cur.locate_code(x + i + 1, y + i + 1)
output += "*"
# bottom left
output += cur.locate_code(x - i - 1, y + i + 1)
output += "*"
# top left
output += cur.locate_code(x - i - 1, y - i - 1)
output += "*"
slow_prnt(output)
def draw_star_clock(x, y):
"""Draw the star in a clock pattern."""
center_color = c.BRIGHT_RED
cross_color = c.BRIGHT_YELLOW
x_color = c.BRIGHT_CYAN
label_color = c.CYAN
# Label the star
cur.locate(x - 2, y + 7)
c.color(label_color)
prnt("Clock")
cur.locate(x - 3, y + 8)
prnt("Pattern")
# Draw the star
cur.locate(x, y)
c.color(center_color)
slow_prnt("*")
# top
output = c.color_code(cross_color)
for i in range(0, 5):
output += cur.locate_code(x, y - 1 - i)
output += "*"
slow_prnt(output)
# top right
output = c.color_code(x_color)
for i in range(0, 5):
output += cur.locate_code(x + 1 + i, y - 1 - i)
output += "*"
slow_prnt(output)
# right
output = c.color_code(cross_color)
output += cur.locate_code(x + 1, y)
output += "*" * 5
slow_prnt(output)
# bottom right
output = c.color_code(x_color)
for i in range(0, 5):
output += cur.locate_code(x + 1 + i, y + 1 + i)
output += "*"
slow_prnt(output)
# bottom
output = c.color_code(cross_color)
for i in range(0, 5):
output += cur.locate_code(x, y + 1 + i)
output += "*"
slow_prnt(output)
# bottom left
output = c.color_code(x_color)
for i in range(0, 5):
output += cur.locate_code(x - 1 - i, y + 1 + i)
output += "*"
slow_prnt(output)
# left
output = c.color_code(cross_color)
output += cur.locate_code(x - 5, y)
output += "*" * 5
slow_prnt(output)
# top left
output = c.color_code(x_color)
for i in range(0, 5):
output += cur.locate_code(x - 1 - i, y - 1 - i)
output += "*"
slow_prnt(output)
def slow_prnt(text, speed=0.3):
prnt(text)
sleep(speed)
if __name__ == "__main__":
main()
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