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efficient bilinear interpolation code

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efficient bilinear interpolation code Tal 25 Feb 23:10
  efficient bilinear interpolation code David Gowers 26 Feb 02:53
  efficient bilinear interpolation code Tal 27 Feb 21:33
Tal
2009-02-25 23:10:40 UTC (almost 16 years ago)

efficient bilinear interpolation code

Hello,

I'm very close to finishing code for efficient bilinear interpolation of transformed brushes (Bug 520078 – Rotate brushes http://bugzilla.gnome.org/show_bug.cgi?id=520078).

I will post again soon when the code is ready.

Regards,

Tal

David Gowers
2009-02-26 02:53:27 UTC (almost 16 years ago)

efficient bilinear interpolation code

Hi!

On Thu, Feb 26, 2009 at 8:40 AM, Tal wrote:

Hello,

I'm very close to finishing code for efficient bilinear interpolation of transformed brushes (Bug 520078 – Rotate brushes http://bugzilla.gnome.org/show_bug.cgi?id=520078).

I will post again soon when the code is ready.

Excellent, I look forward to it.
You should be aware there is an occasional bug that occurs with very small brushes, with the current code, where eg. a 1x1pixel brush becomes a 4x1 pixel brush like this: #..#

It is usually triggered by adjusting the brush scale away from 1.0 and then back to 1.0.

I'm happy to help with testing the interpolation, especially if the above bug also appears with your code.

David

Tal
2009-02-27 21:33:43 UTC (over 15 years ago)

efficient bilinear interpolation code

I've just submitted a patch for efficient bilinear interpolation of transformed brushes to bugzilla (Bug 520078 – Rotate brushes http://bugzilla.gnome.org/show_bug.cgi?id=520078).

I have a feeling the speed could still be improved somehow, so any performance gurus looking for a challenge are welcome to give it a go.

Regards,

Tal

-----Original Message-----
From: taltr@inbox.com
Sent: Wed, 25 Feb 2009 14:10:40 -0800 To: gimp-developer@lists.xcf.berkeley.edu Subject: [Gimp-developer] efficient bilinear interpolation code

Hello,

I'm very close to finishing code for efficient bilinear interpolation of transformed brushes (Bug 520078 – Rotate brushes http://bugzilla.gnome.org/show_bug.cgi?id=520078).

I will post again soon when the code is ready.

Regards,

Tal