 |
Author |
Topic: displaying images (Read 264 times) |
|
der_rabe
 
|
displaying images
« on: Feb 16th, 2004, 5:36pm » |
|
BImage bild_1;
BImage bild_2;
boolean change;
void setup(){
size(100,100);
bild_1 = loadImage("sun.jpg");
bild_2 = loadImage("star.jpg");
change = true;
}
void loop(){
image(bild_1,0,0);
delay(1000);
image(bild_2,0,0);
delay(1000);
}
|
Bernd Salewski
student of digital media
Hochschule Bremen
|
|
|
toxi_
Guest
|
Re: displaying images
« Reply #1 on: Feb 16th, 2004, 6:14pm » |
|
wow, so we only have to guess what your problem is!
delay() will not actually pause the sketch immediately, only specifies the time between loops. you could re-write it like that:
Code:BImage bild_1;
BImage bild_2;
boolean change;
void setup(){
size(100,100);
bild_1 = loadImage("sun.jpg");
bild_2 = loadImage("star.jpg");
change = true;
}
void loop(){
if (change) image(bild_1,0,0);
else image(bild_2,0,0);
change=!change;
delay(1000);
} |
|
macht sinn? 
|
|
|
|
|
toxi_
Guest
|
Re: displaying images
« Reply #2 on: Feb 16th, 2004, 7:29pm » |
|
mr.rabe, i'm sorry, but i was wrong! please see here
sorry!
|
|
|
|
|
der_rabe
|
Re: displaying images
« Reply #3 on: Feb 17th, 2004, 3:37pm » |
|
hi toxi,
sorry for my confusing post, but i had serious connection-problems yesterday.
the problem i had was that of displaying two images alternately.
i could not understand why the code, which i posted does not work.
i have two images which a draw on the screen. one after the other. with a delay in between.
i figured out the method with the boolean variable but i still would like to know why the posted code does not
work.
any hints?
|
Bernd Salewski
student of digital media
Hochschule Bremen
|
|
|
toxi
|
Re: displaying images
« Reply #4 on: Feb 17th, 2004, 5:01pm » |
|
okay, understood. i gueess, it would be because all drawing in processing is done to an offscreen buffer and the content of the sketch/applet window doesn't get updated until loop() has finished. inserting a call to "update()" before each of your delay()'s should solve it, though i'd still prefer the version with the boolean toggle.
|
http://toxi.co.uk/
|
|
|
|
