Python Wand wave()用法及代码示例

wave()函数是Python Wand ImageMagick库中的内置函数，用于与正弦波一起更改图像。它会产生连锁反应。

用法：

wave(amplitude, wave_length, method)

参数：该函数接受上面提到的和下面定义的三个参数：

Amplitude:此参数存储正弦波的振幅值。
Wave_length:该参数存储正弦波的波long值。
method:此参数用于指定采用像素插值方法的方法的值，例如‘undefined’, ‘average’，‘average9’, ‘average16’，‘background’, ‘bilinear’，‘blend’, ‘catrom’，‘integer’, ‘mesh’，‘nearest’, ‘spline’

返回值：此函数返回Wand ImageMagick对象。

原始图片：

范例1：

# Import library from Image  
from wand.image import Image 
  
# Import the image 
with Image(filename ='../geeksforgeeks.png') as image:
    # Clone the image in order to process 
    with image.clone() as wave:
        # Invoke wave function with amplitude as 12, wavelength as 15 
        # method as 'bilinear' 
        wave.wave(12, 15, 'bilinear') 
        # Save the image 
        wave.save(filename ='wave1.jpg')

输出：

范例2：

# Import libraries from the wand   
from wand.image import Image 
from wand.drawing import Drawing 
from wand.color import Color 
  
with Drawing() as draw:
    # Set Stroke color the circle to black 
    draw.stroke_color = Color('black') 
    # Set Width of the circlw to 2  
    draw.stroke_width = 1
    # Set the fill color to 'White (# FFFFFF)' 
    draw.fill_color = Color('white') 
  
    # Invoke Circle function with center at 50, 50 and radius 25 
    draw.circle((200, 200), # Center point 
                (100, 100)) # Perimeter point 
    # Set the font style 
    draw.font = '../Helvetica.ttf'
    # Set the font size  
    draw.font_size = 30
      
    with Image(width = 400, height = 400, background = Color('# 45ff33')) as pic:
        # Set the text and its location 
        draw.text(int(pic.width / 3), int(pic.height / 2), 'GeeksForGeeks !') 
        # Draw the picture 
        draw(pic) 
        # Invoke wave() function with amplitude as 10, wavelength as 10 
        # method as 'blend' 
        pic.wave(10, 10, 'blend') 
        # Save the image  
        pic.save(filename ='wave2.jpg')

输出：

相关用法

注：本文由纯净天空筛选整理自sarthak_ishu11大神的英文原创作品 Wand wave() function – 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。