Python – path_curve_to_quadratic_bezier() function in Wand

The path_curve_to_quadratic_bezier() draws a quadratic Bezier curve from the current point to given to coordinate. The control point is assumed to be the reflection of the control point on the previous command if smooth is True, else a pair of control coordinates must be given.

Syntax : wand.drawing.path_curve_to_quadratic_bezier(to, controls, smooth, relative)

Parameter	Input Type	Description
to	sequence or (numbers.Real, numbers.Real)	pair which represents coordinates to drawn to.
control	collections.abc.sequence or (numbers.Real, numbers.Real)	coordinate to used to influence curve
smooth	bool	assume last defined control coordinate
relative	bool	treat given coordinates as relative to current point.

Example #1:

Python3

from wand.image import Image
from wand.drawing import Drawing
from wand.color import Color

with Drawing() as draw:
    draw.stroke_width = 2
    draw.stroke_color = Color('black')
    draw.fill_color = Color('white')
    draw.path_start()
    # points list to determine curve
    points = [(40, 10), # Start point
              (20, 50), # First control
              (90, 10), # Second control
              (70, 40)] # End point
    # Start middle-left
    draw.path_move(to =(10, 100))
    # Curve across top-left to center
    draw.path_curve_to_quadratic_bezier(to =(100, 0),
                    control = points,
                    smooth = True,
                    relative = True)
    draw.path_finish()
    with Image(width = 200,
               height = 200,
               background = Color('lightgreen')) as image:
        draw(image)
        image.save(filename ="pathbcurve.png")

Output :

Example #2:

Python3

from wand.image import Image
from wand.drawing import Drawing
from wand.color import Color

with Drawing() as draw:
    draw.stroke_width = 2
    draw.stroke_color = Color('black')
    draw.fill_color = Color('white')
    draw.path_start()
    # Start middle-left
    draw.path_move(to=(100, 100))
    # Curve across top-left to center
    draw.path_curve_to_quadratic_bezier(to=(100, 0),
                                        control=[(20,50),(90,10)],
                                        smooth=True,relative=True)

    draw.path_finish()
    with Image(width=200, height=200, background=Color('lightgreen')) as image:
        draw(image)
        image.save(filename="pathbcurve.png")

Output :