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authorFranklin Wei <me@fwei.tk>2019-02-03 17:51:06 -0500
committerFranklin Wei <me@fwei.tk>2019-02-03 17:51:06 -0500
commit4d5b8732c97c73ce7cf04e6641a239ceb0447d8d (patch)
tree5895cac7bcba52ab9f5481eee0dad066ad413326 /vec3.h
parent79a83c2cbee5adca798b8976b2a39ecd6ffd39af (diff)
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Add circular arc and spiral curves
Diffstat (limited to 'vec3.h')
-rw-r--r--vec3.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/vec3.h b/vec3.h
index 1f01098..abfc6c3 100644
--- a/vec3.h
+++ b/vec3.h
@@ -1,3 +1,5 @@
+#ifndef VEC3_H
+#define VEC3_H
#include <iostream>
class vec3 {
public:
@@ -25,3 +27,4 @@ class vec3 {
};
std::ostream &operator<<(std::ostream &output, const vec3 &v);
+#endif