Fix to normalisation in blur. Thanks to @malharjajoo. Closes #6

David Thomas · David Thomas · commit 75597bf9127d · 2017-11-12T09:31:56.000Z
diff --git a/include/puzzler/puzzles/gaussian_blur.hpp b/include/puzzler/puzzles/gaussian_blur.hpp
@@ -76,7 +76,7 @@ namespace puzzler
 
     double coeff(int dx, int dy, double r) const
     {
-      return exp(- (dx*dx+dy*dy) / (2*r) ) / (2 * 3.1415926535897932384626433832795 * r * r);
+      return exp(- (dx*dx+dy*dy) / (2*r) ) / (2 * 3.1415926535897932384626433832795 * r);
     }
 
     void ReferenceExecute(

Original file line number	Diff line number	Diff line change
`@@ -76,7 +76,7 @@ namespace puzzler`
`76`	`76`
`77`	`77`	`double coeff(int dx, int dy, double r) const`
`78`	`78`	`{`
`79`		`- return exp(- (dxdx+dydy) / (2r) ) / (2 3.1415926535897932384626433832795 * r * r);`
	`79`	`+ return exp(- (dxdx+dydy) / (2r) ) / (2 3.1415926535897932384626433832795 * r);`
`80`	`80`	`}`
`81`	`81`
`82`	`82`	`void ReferenceExecute(`