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ACME-1278 : Allow angle to be used in 2D screen filter

meow-7.2.2
Merov Linden 2014-02-06 16:25:12 -08:00
parent b6fbc02f85
commit 8ad37cec70
1 changed files with 7 additions and 4 deletions
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11
indra/llimage/llimagefilter.cpp
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@ -510,15 +510,18 @@ void LLImageFilter::filterScreen(EScreenMode mode, const F32 wave_length, const
{
// Compute screen value
F32 value = 0.0;
F32 d = 0.0;
F32 di = 0.0;
F32 dj = 0.0;
switch (mode)
{
case SCREEN_MODE_2DSINE:
value = (sinf(2*F_PI*i/wave_length_pixels)*sinf(2*F_PI*j/wave_length_pixels)+1.0)*255.0/2.0;
di = cos*i + sin*j;
dj = -sin*i + cos*j;
value = (sinf(2*F_PI*di/wave_length_pixels)*sinf(2*F_PI*dj/wave_length_pixels)+1.0)*255.0/2.0;
break;
case SCREEN_MODE_LINE:
d = sin*i - cos*j;
value = (sinf(2*F_PI*d/wave_length_pixels)+1.0)*255.0/2.0;
dj = sin*i - cos*j;
value = (sinf(2*F_PI*dj/wave_length_pixels)+1.0)*255.0/2.0;
break;
}
U8 dst_value = (dst_data[VRED] >= (U8)(value) ? 255 : 0);