Python Wand ellipse()用法及代碼示例

elippse()函數用於在圖像上繪製橢圓。就像繪圖圓一樣，ellipse()函數需要兩對點，即原點和一對(x，y)橢圓半徑。要繪製局部橢圓，請提供一對開始和結束度作為第三個參數。

用法：

wand.drawing.ellipse(origin, radius, rotation)

參數：

參數	輸入類型	描述
origin	(collections.abc.Sequence)-(numbers.Real，numbers.Real)	對，代表橢圓的原點x和y。
radius	(collections.abc.Sequence)-(numbers.Real，numbers.Real)	表示橢圓的半徑x和y的對
rotation	(collections.abc.Sequence)-(numbers.Real，numbers.Real)	對，代表橢圓的開始和結束。默認值(0，360)

範例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') 
    origin = (100, 100) 
    perimeter = (50, 100) 
  
    # draw circle using circle() function 
    draw.ellipse(origin, perimeter)  
    with Image(width = 200, 
               height = 200, 
               background = Color('green')) as img:
        # draw shape on image using draw() function 
        draw.draw(img) 
        img.save(filename ='ellipse.png')

輸出：

範例2：使用旋轉參數繪製部分橢圓

# 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') 
    origin = (100, 100) 
    perimeter = (100, 50) 
    rotation = (0, 270) 
  
    # draw circle using circle() function 
    draw.ellipse(origin, perimeter, rotation)  
    with Image(width = 200, 
               height = 200, 
               background = Color('green')) as img:
        # draw shape on image using draw() function 
        draw.draw(img) 
        img.save(filename ='ellipsepartial.png')

輸出：

相關用法

注：本文由純淨天空篩選整理自RahulSabharwal大神的英文原創作品 Wand ellipse() function in Python。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。