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 Imagefrom wand.drawing import Drawingfrom wand.color import Colorwith 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 Colorfrom wand.image import Imagefrom wand.drawing import Drawingfrom wand.compat import nestedfrom math import cos, pi, sinwith 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:
