[mapserver-dev] Precision about geotransform

[Stephen Woodbridge]

On 4/21/2011 10:32 AM, Mohamed Saâd HESSANE wrote:
> Hy list,
> I have a question. I'm doing a benchmarking test of a rotated map, and i
> get the result in the attached file.
> My question is why it take more time to draw a map rotated at 45° than a
> map rotated at 90° or 183° ???
> Thank you !

I'm only guessing here but could it be that the math required to compute 
cos and sin is more costly in cpu cycles at those angles.

Regardless, this is an interesting question and I love the graphic, nice 
job on that.

-Steve W