Guild Wars 2

Cliff Spradlin.3512:

I also created a javascript version of our internal color shifting algorithm here: http://jsfiddle.net/cliff/jQ8ga/ . This example code uses the sylvester javascript matrix library for math.

The way it works is pretty different than the processes previously described — it calculates a transformation matrix which is then applied to the color in one pass.

I was able to convert this to Perl easily. The great thing is that Perl has “native” support for matrices, i.e. just create an array of arrays. Coupled with a subroutine for matrix multiplication from my Perl books, and I’m able to reproduce all of the pre-calculated RGB values. Thanks, Cliff!

precalculated RGB values: thanks you so much Cliff

Goddchen.4958:

precalculated RGB values: thanks you so much Cliff

I definitelly seccond this thanks!

Yep, converting this new algorithm to PHP was not too hard, also using arrays for vectors and some algebra functions. Thanks for the precalculated values, too.

=)

Think.8042:

Yep, converting this new algorithm to PHP was not too hard, also using arrays for vectors and some algebra functions. Thanks for the precalculated values, too.

=)

Mind to share? I’m still getting incorrect values with this:
https://gist.github.com/codemasher/b869faa7603e1934c28d

(my brain melts >.<)

Smiley, I think you just need to change your bgrVector (line 82) from a single-row matrix to a single-column matrix. Then swap the order in the matrix multiplication, so it matches Cliff’s order.

Ah, thanks Dr Ishmael, that helped!

Updated and cleaned up that gist, you may take it as php example then:
https://gist.github.com/codemasher/b869faa7603e1934c28d

Also updated my color list: https://chillerlan.net/gw2color.php

Anyway, theres still the other conversion approach - i’d still like to know where the flaw is in there…

Sorry, I somehow thought I posted the Gist link here. Since it’s already done now and looks pretty much exactly like mine, I won’t bother posting an identical copy, so people can focus a little more on what’s working.

What about the difference between highlight, base, and shadow of each dye? The Flame & Frost dyes obviously have a greater difference in these values than most dyes do. How is this determined?