I need to create an image and set it's color pixel by pixel

[sgough]

Okay, as the title states, I want to be able to create an image and set it's color pixel by pixel. To do this I guess I'll need to be able to create an array of pixels, set each to its correct color and then output them to an image.

The problem is I have no idea what language I should use to code this. I have been stuck on this problem for days and really need help.

Any help that you could give would be much appreciated.

[OuTpaTienT]

I don't really understand what you're asking. It's impossible to set the color information of an image pixel by pixel. Or at least impossible within all reasonable means. A 640 x 480 image has over 300,000 pixels. It'd take you a year to set the color information for each one.

Maybe if you could explain exactly what it is you're trying to do we could figure out a way to help you.

[MitaDC]

OuTpaTienT I'd like to see u do this....for me lol....jk...that would take a hell of a long time...

[Creatures]

i'm sure he doesnt mean a 640 x 480 or even a 1800 x 1600 (lol), i think he means a smaller one, but the problem is you probably cant see it.

or you use a different size for a "pixel", as in old dos games the "pixels" are giant and it doesnt take that long to fill a screen!

but to be honest i still dont see what you want

Creatures

[Dax_Brandy]

i just cant imagine doing that. you can start from a big image then edit it pixel by pixel. imo.

[sgough]

Okay, what I need to be able to do is create a system that displays an image of a car and allows the user to change its colour by clicking a button. The problem is this isn't a simple "change the colour of the car" problem becuase of shading etc. I need to be able to let each pixel display a different amount of colour depending on it's position. Actually I could probably colour them in groups.

Anyway, I have a colour mask, a greyscale image of the car and an algorithm that calculates the correct colour of the pixel.

I thought I had a way of doing this in PHP but after reading your replies am concerned it will take too long to execute.

Any other ideas on how this could be achieved?

[Creatures]

ok you need a semi transparent (or however you call it) pic and then changing the background (behind the pic) with a small javascript.

it's quite simple, you need to cut out the car and put it on a different layer, then desturate it ( CTRL + D i think, in Photoshop) then use the Gradient map and make the white parts invisible and the black parts, non visible, save as transperent pic (gif or whatever you like)

program a small javascript where you selecte the BG color behind the car, et voilą

i never tried it, but it would be awsome if it works

i'll give it tomorrow a try, but maybe out's already working on it, with a better way!

would work with flash too (other than javascript) but that would take more time! (for me)

Creatures

[sgough]

Wow! that sounds much easier. I'm not entirely sure what you mean by the gradient map and making the white parts invisible though. Would it be possible to go into a bit more detail. If it is possible to use Flash, that would be ideal as I've done the rest of the system in Flash also.

Thanks for all your help. I've been struggling with this for days and you guys on this forum have by far been the most helpful.