Education/Projects/ProcessingForTheWeb/PImage.get: Difference between revisions

From MozillaWiki
Jump to navigation Jump to search
Line 1: Line 1:
== Summary ==
== Summary ==


This is a method of the PImage class written for [[Education/Projects/ProcessingForTheWeb]]. Gets the color of a pixel, a group of pixels, or the entire image.  
This is a method of the PImage class written for [[Education/Projects/ProcessingForTheWeb]]. Gets the color of a pixel, a group of pixels, or the entire image. [http://processing.org/reference/PImage_get_.html View official Reference]  
[http://processing.org/reference/PImage_get_.html View official Reference]


=== Examples ===
=== Examples ===


void setup() <br />
<br>
{<br />
 
        size(250,200);<br />
void setup()  
background(0);<br />
{    
}<br />
      size(250,200);
PImage pimg = new PImage(loadImage("fish.jpg"));<br />
      background(0);
PImage pimg2 = pimg.get(0,0,64,46);<br />
}
color c= pimg.get(120,0);<br />
 
fill(c);<br />
PImage pimg = new PImage(loadImage("fish.jpg"));
void draw() <br />
PImage pimg2 = pimg.get(0,0,64,46);
{ <br />
color c= pimg.get(120,0);
image(pimg,0,0);<br />
fill(c);
rect(25, 25, 50, 50);<br />
 
image(pimg2,0,93);<br />
void draw()  
}<br />
{  
[[File:PImageGet.jpg]]
      image(pimg,0,0);
      rect(25, 25, 50, 50);
      image(pimg2,0,93);
}
 
<br><br> [[Image:PImageGet.jpg]]  
 
=== Syntax  ===


=== Syntax ===
{| class="wikitable" border="1" width="700"
{| class="wikitable" border="1" width="700"
|-
|-
Line 29: Line 34:
! Description
! Description
|-
|-
|img.get()
| img.get()  
|returns the entire image
| returns the entire image
|-
|-
|img.get(x, y)
| img.get(x, y)  
|returns the color of a single pixel in the img pixels[y*width+x]
| returns the color of a single pixel in the img pixels[y*width+x]
|-
|-
|img.get(x, y, width, height)
| img.get(x, y, width, height)  
|returns a section of the display window by specifing an additional width and height parameter. If the pixel requested is outside of the image window, black is returned.  
| returns a section of the display window by specifing an additional width and height parameter. If the pixel requested is outside of the image window, black is returned.
|}
|}


Revision as of 01:35, 28 November 2009

Summary

This is a method of the PImage class written for Education/Projects/ProcessingForTheWeb. Gets the color of a pixel, a group of pixels, or the entire image. View official Reference

Examples


void setup() 
{      
      size(250,200);
      background(0);
}

PImage pimg = new PImage(loadImage("fish.jpg"));
PImage pimg2 = pimg.get(0,0,64,46);
color c= pimg.get(120,0);
fill(c);

void draw() 
{ 
      image(pimg,0,0);
      rect(25, 25, 50, 50);
      image(pimg2,0,93);
}



PImageGet.jpg

Syntax

Description
img.get() returns the entire image
img.get(x, y) returns the color of a single pixel in the img pixels[y*width+x]
img.get(x, y, width, height) returns a section of the display window by specifing an additional width and height parameter. If the pixel requested is outside of the image window, black is returned.

Parameters

Description
img PImage
x x-coordinate of the pixel
y y-coordinate of the pixel
width width of pixel rectangle to get
height height of pixel rectangle to get

Returns

color or PImage

Bugs

Refer to the reference of each function for a specific bug report.

Bug Description Fixed?(Date)

Tests

Retrieved from "https://wiki.allizom.org/index.php?title=Education/Projects/ProcessingForTheWeb/PImage.get&oldid=186108"