forked from bartvdbraak/blender
use ease interpolation for dilate/erode feather option, looks smoother
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6fc277c410
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392b3a78e2
@ -89,7 +89,8 @@ float *BlurBaseOperation::make_gausstab(int rad)
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return gausstab;
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}
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/* normalized distance from the current (inverted so 1.0 is close and 0.0 is far) */
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/* normalized distance from the current (inverted so 1.0 is close and 0.0 is far)
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* 'ease' is applied after, looks nicer */
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float *BlurBaseOperation::make_dist_fac_inverse(int rad)
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{
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float *dist_fac_invert, val;
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@ -101,6 +102,10 @@ float *BlurBaseOperation::make_dist_fac_inverse(int rad)
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for (i = -rad; i <= rad; i++) {
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val = 1.0f - fabsf(((float)i / (float)rad));
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/* ease - gives less hard lines for dilate/erode feather */
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val = (3.0f * val * val - 2.0f * val * val * val);
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dist_fac_invert[i + rad] = val;
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}
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