Python Wand bezier()用法及代码示例

bezier()是Wand中的另一个绘图函数。此方法用于绘制贝塞尔曲线。它需要四个点才能确定贝塞尔曲线。极限点定义曲线的起点和终点，而在两个点之间则用于控制曲线。

用法： wand.drawing.bezier(points)

参数：

参数	输入类型	描述
points	list	x，y元组的列表。

范例1：

# Import required objects from wand modules 
from wand.image import Image 
from wand.drawing import Drawing 
from wand.color import Color 
  
# generate object for wand.drawing 
with Drawing() as draw:
  
    # set stroke color 
    draw.stroke_color = Color('black') 
  
    # set width for stroke 
    draw.stroke_width = 1
  
    # points list to determine curve 
    points = [(40, 10), # Start point 
              (20, 50), # First control 
              (90, 10), # Second control 
              (70, 40)] # End point  
  
    # fill white color in arc 
    draw.fill_color = Color('white') 
  
    # draw bezier curve using bezier function 
    draw.bezier(points)  
    with Image(width = 100, 
               height = 100, 
               background = Color('green')) as img:
  
        # draw shape on image using draw() function 
        draw.draw(img) 
        img.save(filename ='bezier.png')

输出：

范例2：

输入图片：

# Import required objects from wand modules 
from wand.image import Image 
from wand.drawing import Drawing 
from wand.color import Color 
  
# generate object for wand.drawing 
with Drawing() as draw:
    points = [(20, 100),  # Start point 
              (50, 10),  # First control 
              (50, 90),  # Second control 
              (180, 100)] 
  
    # set stroke color 
    draw.stroke_color = Color('black') 
  
    # set width for stroke 
    draw.stroke_width = 1
  
    # fill white color in arc 
    draw.fill_color = Color('white') 
  
    # draw bezier curve using bezier function 
    # From bottom left around to top right 
    draw.bezier(points)  
    with Image(filename ="gog.png") as img:
  
        # draw shape on image using draw() function 
        draw.draw(img) 
        img.save(filename ='bezier2.png')

输出：

相关用法

注：本文由纯净天空筛选整理自RahulSabharwal大神的英文原创作品 Wand bezier() function in Python。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。