Merge pull request #373 from RayTracing/fix-361

hollasch · web-flow · commit 27dd28b5169d · 2020-02-22T16:46:18.000-08:00
Fix letter casing typo book1
diff --git a/books/RayTracingInOneWeekend.html b/books/RayTracingInOneWeekend.html
@@ -2081,7 +2081,7 @@
     vec3 refract(const vec3& uv, const vec3& n, double etai_over_etat) {
         auto cos_theta = dot(-uv, n);
         vec3 r_out_parallel =  etai_over_etat * (uv + cos_theta*n);
-        vec3 r_out_perp = -sqrt(1.0 - r_out_parallel.length_squared()) * N;
+        vec3 r_out_perp = -sqrt(1.0 - r_out_parallel.length_squared()) * n;
         return r_out_parallel + r_out_perp;
     }
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Original file line number	Diff line number	Diff line change
`@@ -2081,7 +2081,7 @@`
`2081`	`2081`	`vec3 refract(const vec3& uv, const vec3& n, double etai_over_etat) {`
`2082`	`2082`	`auto cos_theta = dot(-uv, n);`
`2083`	`2083`	`vec3 r_out_parallel = etai_over_etat * (uv + cos_theta*n);`
`2084`		`- vec3 r_out_perp = -sqrt(1.0 - r_out_parallel.length_squared()) * N;`
	`2084`	`+ vec3 r_out_perp = -sqrt(1.0 - r_out_parallel.length_squared()) * n;`
`2085`	`2085`	`return r_out_parallel + r_out_perp;`
`2086`	`2086`	`}`
`2087`	`2087`	`~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~`