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Topic: drawing on a 'self created' image (Read 1447 times) |
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elout
 
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drawing on a 'self created' image
« on: Mar 30th, 2004, 7:38pm » |
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I was just wandering if it`s possible to draw onto a new created BImage. It seems it`s not possible right now.
something like
my_img.line(0,0,100,100);
I just started another project, and although I have several work-arounds, like drawing on the screen, copy the screen to an image buffer, and clearing the screen again.. I was just wandering if the p5 enviroment is flexible for this kind of stuff.
Code:
BImage my_img;
void setup()
{
size(600, 300);
my_img = new BImage(100,100);
}
void loop()
{
background(155);
image(my_img,0,0,40,40);
line(0,0,100,100);
//my_img.line(0,0,100,100); //won`t work
//just add a little delay so the cpu can handle other stuff
delay(15);
}
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fry
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Re: drawing on a 'self created' image
« Reply #1 on: Mar 30th, 2004, 8:10pm » |
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use BGraphics instead, which subclasses BImage..
myimg = new BGraphics(100, 100);
myimg.line(20, 20, 80, 80);
then you can draw myimg the same way you would other images.
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narain
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Re: drawing on a 'self created' image
« Reply #3 on: Jul 30th, 2004, 5:37pm » |
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BGraphics isn't working for me...
Code:BGraphics g;
void setup () {
size(100,100);
g = new BGraphics(width,height);
}
void draw () {
g.ellipse(20,20,60,60);
image(g,0,0);
} |
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I just get a blank sketch. If I just do ellipse() instead of g.ellipse(), the ellipse shows up.
Am I doing something wrong?
P.S. Could it have something to do with the BGraphics image being transparent by default?
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fry
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Re: drawing on a 'self created' image
« Reply #4 on: Jul 30th, 2004, 8:13pm » |
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don't use 'g', since the "real" BGraphics is already called 'g', so you're gonna confuse the hell outta p5. 
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Andre_Michelle
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Re: drawing on a 'self created' image
« Reply #5 on: Jul 30th, 2004, 9:50pm » |
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I cannot do this with the 3d camera, don't I ?
I'm afterall trying to find a solution to move the projectionplane on the screen...
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narain
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Re: drawing on a 'self created' image
« Reply #6 on: Jul 31st, 2004, 5:28am » |
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It still doesn't work...
Code:BGraphics myG;
void setup () {
size(100,100);
myG = new BGraphics(width,height);
}
void draw () {
myG.ellipse(20,20,60,60);
image(myG,0,0);
} |
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I'm kinda embarrassed posting this - I keep thinking it'll be some very stupid little mistake that I can't find.
Update: Did some testing, and I found image(myG, 0,0) doesn't work, but image(myG, 0,0, myG.width,myG.height) does. Bug?
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| « Last Edit: Jul 31st, 2004, 5:37am by narain » |
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Andre_Michelle
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Re: drawing on a 'self created' image
« Reply #7 on: Jul 31st, 2004, 7:20am » |
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Yes, you are right. It works even with 3d.
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fry
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Re: drawing on a 'self created' image
« Reply #8 on: Sep 21st, 2004, 3:32am » |
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just add
myG.format = RGB
after it's created. and i've just fixed this for megabucket.
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