updatePixels()

本参考资料用于Processing 3.0+。 如果你使用的是前一版本,请在使用软件帮助菜单内的参考资料。. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

名称

updatePixels()

示例
 PImage img = loadImage("rockies.jpg");

image(img, 0, 0);

int halfImage = img.width * img.height/2;

loadPixels();


for (int i = 0;

i < halfImage;

i++)
{  
pixels[i+halfImage] = pixels[i];


  } updatePixels();

描述 Updates the display window with the data in the pixels[] array. Use in conjunction with loadPixels(). If you're only reading pixels from the array, there's no need to call updatePixels()

updating is only necessary to apply changes.

Certain renderers may or may not seem to require loadPixels() or updatePixels(). However, the rule is that any time you want to manipulate the pixels[] array, you must first call loadPixels(), and after changes have been made, call updatePixels(). Even if the renderer may not seem to use this function in the current Processing release, this will always be subject to change.

Currently, while none of the renderers use the additional parameters to updatePixels(), this may be implemented in the future.

语法
updatePixels()
返回值 void
相关 loadPixels()
pixels[]

Updated on October 2, 2018 05:02:08pm EDT

updatePixels()