rename Vec2 -> Vec

vec.go

@@ -6,10 +6,10 @@ import (
 	"math/cmplx"
 )
 
-// Vec2 is a 2d vector type. It is unusually implemented as complex128 for convenience. Since Go
-// does not allow operator overloading, implementing vector as a struct leads to a bunch of methods
-// for addition, subtraction and multiplication of vectors. With complex128, much of this
-// functionality is given through operators.
+// Vec is a 2d vector type. It is unusually implemented as complex128 for convenience. Since Go does
+// not allow operator overloading, implementing vector as a struct leads to a bunch of methods for
+// addition, subtraction and multiplication of vectors. With complex128, much of this functionality
+// is given through operators.
 //
 // Create vectors with the V constructor:
 //
@@ -30,59 +30,59 @@ import (
 //       fmt.Println("this won't happend")
 //   }
 //   x := u.Unit().Dot(v.Unit())
-type Vec2 complex128
+type Vec complex128
 
 // V returns a new 2d vector with the given coordinates.
-func V(x, y float64) Vec2 {
-	return Vec2(complex(x, y))
+func V(x, y float64) Vec {
+	return Vec(complex(x, y))
 }
 
-// String returns the string representation of a vector u as "Vec2(x, y)".
-func (u Vec2) String() string {
-	return fmt.Sprintf("Vec2(%v, %v)", u.X(), u.Y())
+// String returns the string representation of a vector u as "Vec(x, y)".
+func (u Vec) String() string {
+	return fmt.Sprintf("Vec(%v, %v)", u.X(), u.Y())
 }
 
 // X returns the x coordinate of a vector u.
-func (u Vec2) X() float64 {
+func (u Vec) X() float64 {
 	return real(u)
 }
 
 // Y returns the y coordinate of a vector u.
-func (u Vec2) Y() float64 {
+func (u Vec) Y() float64 {
 	return imag(u)
 }
 
 // Len returns the length of a vector u.
-func (u Vec2) Len() float64 {
+func (u Vec) Len() float64 {
 	return cmplx.Abs(complex128(u))
 }
 
 // Angle returns the angle between a vector u and the x-axis. The result is in the range [-Pi, Pi].
-func (u Vec2) Angle() float64 {
+func (u Vec) Angle() float64 {
 	return cmplx.Phase(complex128(u))
 }
 
 // Unit returns a vector of length 1 with the same angle as u.
-func (u Vec2) Unit() Vec2 {
+func (u Vec) Unit() Vec {
 	return u / V(u.Len(), 0)
 }
 
 // Scaled returns a vector u multiplied by k.
-func (u Vec2) Scaled(k float64) Vec2 {
+func (u Vec) Scaled(k float64) Vec {
 	return u * V(k, 0)
 }
 
 // Rotated returns a vector u rotated by the given angle in radians.
-func (u Vec2) Rotated(angle float64) Vec2 {
+func (u Vec) Rotated(angle float64) Vec {
 	return u * V(math.Cos(angle), math.Sin(angle))
 }
 
 // Dot returns the dot product of vectors u and v.
-func (u Vec2) Dot(v Vec2) float64 {
+func (u Vec) Dot(v Vec) float64 {
 	return u.X()*v.X() + u.Y()*v.Y()
 }
 
 // Cross return the cross product of vectors u and v.
-func (u Vec2) Cross(v Vec2) float64 {
+func (u Vec) Cross(v Vec) float64 {
 	return u.X()*v.Y() - v.X()*u.Y()
 }