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loadImage (Read 1964 times)
jtoddknight
loadImage
Sep 6th, 2005, 3:04am  
in the documentation for loadImage, under description, it says:

"Loading images in draw() can dramatically reduce the speed of a program. "

Doing this gives me 70 fps

however loading images in setup instead gives me 99.99 fps.

misquote?

====
also just before this sentence there is a minor typo:
"In most cases, load all images in setup() to preload them with the program starts."

should be ". . .when the program starts"
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mflux
Re: loadImage
Reply #1 - Sep 6th, 2005, 5:45am  
Besides the grammar, the reference is absolutely right.

You don't want to be loading images on run-time, especially if it's directly inside loop.

Imagine where you're playing a game and every frame it's trying to draw is trying to read a giant tif file on your hard drive. Yes. This will kill performance.
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beachmeat
Re: loadImage
Reply #2 - Oct 4th, 2005, 10:39am  
Well I am doing this at 15 fps to load image in that holds some analysed data coded with colors...works fine, better then sending huge amounts of data via socket Wink

But there is another issue regarding loadImage in the reference, I think we should mention that its possible to load PNGs!
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fry
Re: loadImage
Reply #3 - Oct 4th, 2005, 11:26pm  
beachmeat wrote on Oct 4th, 2005, 10:39am:
But there is another issue regarding loadImage in the reference, I think we should mention that its possible to load PNGs!

no, not consistently.. depends on the version of your java vm so it's strongly discouraged. i'm not sure when sun added this (but if anyone cares to look it up, that'd be great.. my guess is java 1.4 or later).
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beachmeat
Re: loadImage
Reply #4 - Oct 6th, 2005, 6:17pm  
It was 1.3:
http://java.sun.com/j2se/1.3/docs/guide/2d/new_features.html

I am actually very happy with it Smiley
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fry
Re: loadImage
Reply #5 - Oct 6th, 2005, 6:32pm  
interesting.. one more reason to perhaps cut the java 1.1 support cord and make 1.3 our baseline permanently...
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cello
Re: loadImage
Reply #6 - Oct 7th, 2005, 12:37am  
I have a Java 1.1 compatible png loader, if such is wanted.

Marcello
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