Revert "FIX: Fixes dot() returning NaN. (#26)" (#29)

This reverts commit 007106a.

arithmetic.go

@@ -227,23 +227,11 @@ func dot(a, b []float64) float64 {
 	result, dimA, dimB := 0., len(a), len(b)
 
 	if dimA == 2 && dimB == 2 {
-		result = a[x]*b[x] + a[y]*b[y]
-		if result > 1 {
-			result = 1
-		} else if result < -1 {
-			result = -1
-		}
-		return result
+		return a[x]*b[x] + a[y]*b[y]
 	}
 
 	if dimA == 3 && dimB == 3 {
-		result = a[x]*b[x] + a[y]*b[y] + a[z]*b[z]
-		if result > 1 {
-			result = 1
-		} else if result < -1 {
-			result = -1
-		}
-		return result
+		return a[x]*b[x] + a[y]*b[y] + a[z]*b[z]
 	}
 
 	if dimA > dimB {
@@ -258,12 +246,6 @@ func dot(a, b []float64) float64 {
 		result += a[i] * b[i]
 	}
 
-	if result > 1 {
-		result = 1
-	} else if result < -1 {
-		result = -1
-	}
-
 	return result
 }
 

vector_test.go

@@ -100,20 +100,3 @@ func TestSwizzling(t *testing.T) {
 	}
 
 }
-
-func TestDotNaN(t *testing.T) {
-	v1 := vec{1, 0, 0}
-	v2 := vec{0, 1, 0}
-
-	if v1.Dot(v2) != 0 {
-		t.Error("dot function did not return values expected")
-	}
-
-	v1 = vector.Vector{-0.9040721420170615, 0, 0.4273798802338293}
-	v2 = v1.Invert()
-
-	if math.IsNaN(v1.Dot(v2)) {
-		t.Error("dot function returned NaN")
-	}
-
-}