X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;ds=sidebyside;f=ETL%2Ftrunk%2FETL%2F_angle.h;h=bd3231a4e0a1dbd18add8365ca11683f7e9e869b;hb=716873ad2fd2cb3c07e311ee7b0e2f023500c868;hp=b87325581d83eb95867783a21ea589aecd48c7a7;hpb=5435a07a723881d426e530864baab1681133bb58;p=synfig.git

diff --git a/ETL/trunk/ETL/_angle.h b/ETL/trunk/ETL/_angle.h
index b873255..bd3231a 100644
--- a/ETL/trunk/ETL/_angle.h
+++ b/ETL/trunk/ETL/_angle.h
@@ -198,6 +198,7 @@ public:
 		return ret;
 	}
 
+	//! Zero Rotation (0 degrees)
 	static angle
 	zero()
 	{
@@ -206,23 +207,25 @@ public:
 		return ret;
 	}
 
+	//! One Complete Rotation (360 degrees)
 	static angle
 	one()
 	{
 		angle ret;
-		ret.v=PI;
+		ret.v=PI*2;
 		return ret;
 	}
 
+	//! One Half Rotation (180 degrees)
 	static angle
 	half()
 	{
 		angle ret;
-		ret.v=PI*0.5;
+		ret.v=PI;
 		return ret;
 	}
 
-	bool operator!()const { return v==0; }
+	bool operator!()const { return std::abs(mod().v) < epsilon; }
 
 private: