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Wand push() and pop() in Python

  • Last Updated : 16 Oct, 2021

We can use ImageMagick’s internal graphic context stack to manage different styles and operations in Wand. There are total four push functions for context stack. 
 

  • push()
  • push_clip_path()
  • push_defs()
  • push_pattern()

push() function is used to grow context stack and pop() is another function and used to restore stack to previous push.
 

Syntax : 
 

# for push()
wand.drawing.push()

# for pop()
wand.drawing.pop()

Parameters : No parameters for push() as well as for pop() function

Example #1: 
 

Python3




from wand.image import Image
from wand.drawing import Drawing
from wand.color import Color
 
with Drawing() as ctx:
    ctx.fill_color = Color('RED')
    ctx.stroke_color = Color('BLACK')
    ctx.push()
 
    ctx.circle((50, 50), (25, 25))
    ctx.pop()
 
    ctx.fill_color = Color('YELLOW')
    ctx.stroke_color = Color('GREEN')
    ctx.push()
 
    ctx.circle((150, 150), (125, 125))
    ctx.pop()
 
    with Image(width = 200, height = 200, background = Color('lightgreen')) as image:
        ctx(image)
        image.save(filename = "push.png")

Output: 
 

Example #2: 
 

Python3




from wand.color import Color
from wand.image import Image
from wand.drawing import Drawing
from wand.compat import nested
from math import cos, pi, sin
 
with nested(Color('lightblue'),
            Color('transparent'),
            Drawing()) as (bg, fg, draw):
    draw.stroke_width = 3
    draw.fill_color = fg
 
    for degree in range(0, 360, 15):
        draw.push()  # Grow stack
        draw.stroke_color = Color('hsl({0}%, 100 %, 50 %)'.format(degree * 100 / 360))
        t = degree / 180.0 * pi
        x = 35 * cos(t) + 50
        y = 35 * sin(t) + 50
        draw.line((50, 50), (x, y))
        draw.pop()  # Restore stack
 
    with Image(width = 100, height = 100, background = Color('green')) as img:
        draw(img)
        img.save(filename = "pushpop.png")

Output:
 

 


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