Hi!
I was exporting a tree from Speedtree and wanted to use the s@hierarchy to generate different colors. I used random_shash on the s@hierarchy to get the seeds.
I noticed I'm getting the same results and I'm wondering if the seed is just too big of a number. I've isolated 3 primitives of my asset with integer values:
0: 389075844
1: 389075843
2: 389075842
...I get the same color when using the rand function with those seeds.
Any tips on getting this to work?
-Olivier
VEX Rand Function: different seeds, same result? [{SOLVED}]
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- olivierth
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- olivierth
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Ahhh! ok, I think I found a workaround.
The trick was to use a step between my random_shash and rand functions. I used the random_ihash function that takes an integer as a seed and generate a new, completely different integer. It convert like this:
0: 389075844 = -722655334
1: 389075843 = -445310208
2: 389075842 = -1444283786
When using those new values, the colors are different! Here's the code:
The trick was to use a step between my random_shash and rand functions. I used the random_ihash function that takes an integer as a seed and generate a new, completely different integer. It convert like this:
0: 389075844 = -722655334
1: 389075843 = -445310208
2: 389075842 = -1444283786
When using those new values, the colors are different! Here's the code:
string last = split(s@hierarchy, "/")[-1] // isolate the last part of the hierarchy int number = random_shash(last); // rand integer from string int ihash = random_ihash(number); // rand integer from integer @Cd = rand(ihash);
Edited by olivierth - 2024年5月22日 10:39:57
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- jsmack
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olivierth
Hi!
I was exporting a tree from Speedtree and wanted to use the s@hierarchy to generate different colors. I used random_shash on the s@hierarchy to get the seeds.
I noticed I'm getting the same results and I'm wondering if the seed is just too big of a number. I've isolated 3 primitives of my asset with integer values:
0: 389075844
1: 389075843
2: 389075842
...I get the same color when using the rand function with those seeds.
Any tips on getting this to work?
-Olivier
random() for integers, rand() for floats
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