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Topic: rotating/translating a blended image (Read 306 times) |
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sspboyd
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rotating/translating a blended image
« on: Jun 18th, 2004, 2:41am » |
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Why won't a blend conform to translations and/or rotations?
Am I missing something in the way blend is supposed to work?
This code results in an appropriately 'substracted' image being placed in the upper left corner of the window. I would have expected it to be rotated around the middle of the window somewhere instead.
Code:// blend translate/rotate test
void setup(){
BImage src;
src=loadImage("apt2.jpg");
size(src.width, src.height);
translate(width/2, height/2);
rotateZ(TWO_PI/3);
blend(src,1,1,width/2, height/2,
0,0,width/2,height/2,
SUBSTRACT);
} |
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thanks,
s
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| « Last Edit: Jun 18th, 2004, 2:43am by sspboyd » |
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gmail.com w/ sspboyd username
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kevinP
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Re: rotating/translating a blended image
« Reply #1 on: Jun 18th, 2004, 7:38am » |
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Hi,
translate() does not work in the setup() function. And no parsing error. Frustrating, huh.
-K
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| « Last Edit: Jun 18th, 2004, 7:40am by kevinP » |
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Kevin Pfeiffer
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sspboyd
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Re: rotating/translating a blended image
« Reply #2 on: Jun 18th, 2004, 9:13am » |
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ok. i am still finding however it doesn't work with loop, mousePressed, etc...
Code:// blend translate/rotate test
BImage src;
void setup(){
src=loadImage("http://art.piw.ca/media/images/apt2.jpg");
size(src.width, src.height);
}
void loop(){
background(255);
translate(width/2, height/2);
rotateZ(TWO_PI/3);
blend(src,1,1,width/2, height/2,
0,0,width/2,height/2,
SUBSTRACT);
}
void mousePressed(){
background(255);
translate(width/2, height/2);
rotateZ(TWO_PI/3);
blend(src,1,1,width/2, height/2,
0,0,width/2,height/2,
SUBSTRACT);
}
void keyPressed(){
background(255);
translate(width/2, height/2);
rotateZ(TWO_PI/3);
blend(src,1,1,width/2, height/2,
0,0,width/2,height/2,
SUBSTRACT);
}
void mouseReleased(){
background(255);
translate(width/2, height/2);
rotateZ(TWO_PI/3);
blend(src,1,1,width/2, height/2,
0,0,width/2,height/2,
SUBSTRACT);
} |
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gmail.com w/ sspboyd username
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TomC
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Re: rotating/translating a blended image
« Reply #3 on: Jun 18th, 2004, 12:39pm » |
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I think blend() doesn't currently work like image(), it's more like replicate().
Perhaps this should go into suggestions?
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sspboyd
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Re: rotating/translating a blended image
« Reply #4 on: Jun 18th, 2004, 7:00pm » |
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Is there a reason why blend and replicate work this way? I'd like to know so I can make better use of them.
Can anyone suggest other ways of transforming/rotating blends and replicates?
steve
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gmail.com w/ sspboyd username
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JohnG
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Re: rotating/translating a blended image
« Reply #5 on: Jun 18th, 2004, 8:08pm » |
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You can use
outside of functions:
Code:
and in one of your functions.. mousePressed or whatever:
Code:
newimg=blend(src,1,1,width/2, height/2, 0, 0, width/2, height/2, SUBSTRACT);
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then you can just do image(newimg,0,0); to display the blended image.
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sspboyd
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Re: rotating/translating a blended image
« Reply #6 on: Jun 18th, 2004, 8:38pm » |
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excellent. thanks!
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gmail.com w/ sspboyd username
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sspboyd
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Re: rotating/translating a blended image
« Reply #7 on: Jun 18th, 2004, 9:35pm » |
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I was having some trouble with your example code until I changed it from
Code:
to
Code:
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| « Last Edit: Jun 18th, 2004, 9:35pm by sspboyd » |
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gmail.com w/ sspboyd username
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