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[fishladder.git] / vg / vg_m.h

diff --git a/vg/vg_m.h b/vg/vg_m.h
index 690683710d816a9bec4ec8444b29d54b58b9e007..9e70c9290ca48d859df9f9c054065c506040df23 100644 (file)
--- a/vg/vg_m.h
+++ b/vg/vg_m.h
@@ -17,6 +17,11 @@ static inline float vg_maxf( float a, float b )
        return a > b? a: b;
 }
 
+static inline float vg_clampf( float a, float min, float max )
+{
+       return vg_minf( max, vg_maxf( a, min ) );
+}
+
 #define VG_MIN( A, B ) ((A)<(B)?(A):(B))
 #define VG_MAX( A, B ) ((A)>(B)?(A):(B))
 
@@ -98,6 +103,28 @@ static inline void v2_muladds( v2f a, v2f b, float s, v2f d )
        d[0] = a[0]+b[0]*s; d[1] = a[1]+b[1]*s;
 }
 
+static inline float v2_length2( v2f a )
+{
+       return a[0]*a[0] + a[1]*a[1];
+}
+
+static inline float v2_length( v2f a )
+{
+       return sqrtf( v2_length2( a ) );
+}
+
+static inline float v2_dist2( v2f a, v2f b )
+{
+       v2f delta;
+       v2_sub( a, b, delta );
+       return v2_length2( delta );
+}
+
+static inline float v2_dist( v2f a, v2f b )
+{
+       return sqrtf( v2_dist2( a, b ) );
+}
+
 // Vector 3
 // ==================================================================================================================