 |
Author |
Topic: fading made simple with copy()? (Read 413 times) |
|
sanguinarium
|
fading made simple with copy()?
« on: Aug 2nd, 2004, 1:02pm » |
|
here's another strange one: if you run the code below, which is an extended version of 'continous line', you will notice the content of the applet fading away with the oldest parts first. it looks as if either copy() or then image() do not copy/paste the information to 100% but instead loose information on the run.
if you have a black background, it's a nice fading feature, but then again, if you haven't... :|
this has been seen on 68pc/69pc/68mac/69mac
regards to megabucket. 
-----------------------------------
BImage fd;
void setup(){
size(300, 300);
background(100,0,0);
}
void loop(){
fd=copy();
background(100,0,0);
image(fd,0,0,width,height);
if(mousePressed && pmouseX != 0 && pmouseY != 0) {
stroke(255,0,0);
line(mouseX, mouseY, pmouseX, pmouseY);
}
}
|
|
|
|
|
mattgilbert
|
Re: fading made simple with copy()?
« Reply #1 on: Nov 20th, 2004, 3:55am » |
|
i've also noticed this with the following code, using BImage instead of BGraphics. it seems to be caused by image(). One detail is that it only does the fading on the parts of the image that are black, not those set to red.
here's the Code:
BImage overlay;
void setup(){
size(200, 200);
overlay = new BImage(200, 200);
for(int i = 0; i < overlay.pixels.length / 2; i++){
overlay.pixels[i] = color(255, 0, 0);
}
}
void loop(){
image(overlay, 0, 0);
}
void mouseDragged(){
stroke(255);
line(pmouseX, pmouseY, mouseX, mouseY);
}
|
|
matt
|
|
|
|
|
|
