X-Git-Url: https://git.cinelerra-gg.org/git/?p=goodguy%2Fcinelerra.git;a=blobdiff_plain;f=cinelerra-5.1%2Fcinelerra%2Fmaskengine.C;h=8f6541ae6338bafd4191a32cffc7ad71514fe325;hp=e369d77c6bc99cadd33b2e4ad7ba2fc254bc763f;hb=b350aa5a1ccbadcb5f794183c443c0738cd1e9ab;hpb=b8cd5c4f5f296f626f5ec691d2440612bcf59422

diff --git a/cinelerra-5.1/cinelerra/maskengine.C b/cinelerra-5.1/cinelerra/maskengine.C
index e369d77c..8f6541ae 100644
--- a/cinelerra-5.1/cinelerra/maskengine.C
+++ b/cinelerra-5.1/cinelerra/maskengine.C
@@ -220,10 +220,12 @@ void MaskUnit::process_package(LoadPackage *package)
 			int fg = 0xffff * (rv >= 0 ? vv : 0);
 			int bg = 0xffff * (rv >= 0 ? 0 : vv);
 			int rr = r*r;  double dr = 1./rr;
+			// gausian, rr is x**2, limit 1/255
+			double sig2 = -log(255.0);
 			temp_t psf[rr+1];  spot = psf;
 			for( int i=0; i<=rr; ++i ) {
-				double d = i*dr;
-				psf[i] = (1-d)*fg + d*bg;
+				double d = exp(i*dr * sig2);
+				psf[i] = d*fg + (1-d)*bg;
 			}
 			int n = edge.size();
 			for( int i=0; i<n; ++i ) {