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Topic: image backgrounds (Read 1017 times) |
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benelek
 
 
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image backgrounds
« on: Jan 15th, 2003, 1:01am » |
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i don't suppose it's possible to have an image as the background?
ie, background(theImage);
it's all good and fun drawing images to specific points in a 3d space, but can i draw the image at the size of the applet, and behind everything else (without the bother of resizing and repositioning it whenever i move something backwards)?
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| « Last Edit: Jan 15th, 2003, 1:04am by benelek » |
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benelek
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Re: image backgrounds
« Reply #1 on: Jan 15th, 2003, 2:44am » |
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hehe, oooh i think i found an answer to this one myself (as soon as the color array thing is fixed). check out the following in the meantime:
Code:
void setup() {
size(228,240);
background(255);
moo=loadImage("moo.gif");
mooPixGreen = new int[pixels.length];
}
BImage moo;
int[] mooPixGreen;
boolean firstTime=true;
void loop() {
if(firstTime) {
image(moo,0,0);
for(int i=0; i<pixels.length; i++) {
mooPixGreen[i]=int(green(pixels[i]));
}
firstTime=false;
}
System.arraycopy(mooPixGreen,0,pixels,0,mooPixGreen.length);
// put ur other stuff here.
}
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of course, u have to have the image in the data directory... and, because i'm using an int array to store the image (instead of a color array), u can only use one channel at a time. but it's cool anyway 
-jacob
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fry
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Re: image backgrounds
« Reply #2 on: Jan 15th, 2003, 2:49am » |
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use noBackground() inside setup.. then at the beginning of your loop(), include this:
System.arraycopy(mooPixGreen.pixels, 0, pixels, 0, pixels.length);
your image should be the same as what you setup with for size()
background(some_image) will be added in the future.
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benelek
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Re: image backgrounds
« Reply #3 on: Jan 15th, 2003, 2:51am » |
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mm, yes a somewhat shorter method 
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benelek
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Re: image backgrounds
« Reply #4 on: Jan 15th, 2003, 2:56am » |
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actually, i didn't realise p5 could store whole colours in int format.
using "mooPixBlue[i]=pixels[i];" instead of "mooPixBlue[i]=int(blue(pixels[i]));" will store all the colour information for that pixel, not just a certain chanel.
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REAS
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Re: image backgrounds
« Reply #5 on: Jan 15th, 2003, 5:23pm » |
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For clarity:
Code:
BImage bg;
void setup()
{
size(200,200);
noBackground();
bg = loadImage("sky.jpg");
}
void loop()
{
// Loads image into the background very quickly
System.arraycopy(bg.pixels, 0, pixels, 0, width*height);
}
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| « Last Edit: Jan 15th, 2003, 5:23pm by REAS » |
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benelek
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Re: image backgrounds
« Reply #7 on: Jan 16th, 2003, 4:43am » |
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on Jan 15th, 2003, 5:23pm, REAS wrote: Code:
System.arraycopy(bg.pixels, 0, pixels, 0, width*height);
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hmm... any date set for updating the reference section object properties like "img.pixels" are like invisible gifts being unveiled one by one
-jacob
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| « Last Edit: Jan 16th, 2003, 4:43am by benelek » |
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REAS
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Re: image backgrounds
« Reply #8 on: Jan 20th, 2003, 10:36am » |
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I think many invisible gifts will remain invisible, but some like this will be documented. We're trying to keep the docs as small as possible.
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