Python Wand arc()用法及代码示例

arc()是wand.drawing模块中存在的函数。 arc()函数在图像中绘制圆弧。您需要定义三对(x，y)坐标。第一对和第二对坐标将是最小边界矩形，最后一对将定义开始和结束度。

用法：

wand.drawing.arc(start, end, degree)

参数：

参数	输入类型	描述
start	序列或(数字。实数，数字。实数)	表示弧的x和y的起点。
end	序列或(数字。实数，数字。实数)	表示圆弧的x和y的终点。
degree	序列或(数字。实数，数字。实数)	代表开始程度和结束程度的对

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
    # fill white color in arc 
    draw.fill_color = Color('white') 
    draw.arc(( 50, 50),  # Stating point 
             ( 150, 150),  # Ending point 
             (135, -45))  # From bottom left around to top right 
    with Image(width = 100, 
               height = 100, 
               background = Color('green')) as img:
        # draw shape on image using draw() function 
        draw.draw(img) 
        img.save(filename ='arc.png')

输出：

范例2：

源图像：

# 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
    # fill white color in arc 
    draw.fill_color = Color('white') 
    draw.arc(( 50, 50),  # Stating point 
             ( 150, 150),  # Ending point 
             (135, -45))  # From bottom left around to top right 
    with Image(filename ="gog.png") as img:
        # draw shape on image using draw() function 
        draw.draw(img) 
        img.save(filename ='arc.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 arc() 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。