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Add LinearCombination for Vectors

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This commit is contained in:
Eryn Wells 2014-07-16 23:23:26 -07:00
parent 2834fa45c6
commit ca5cabb6ef
2 changed files with 16 additions and 0 deletions
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11
src/basics.cc
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@ -251,6 +251,17 @@ operator<<(std::ostream &os, const Vector3 &v)
return os;
}
Vector3
LinearCombination(const double k1, const Vector3& v1,
const double k2, const Vector3& v2,
const double k3, const Vector3& v3)
{
return Vector3(k1 * v1.x + k2 * v2.x + k3 * v3.x,
k1 * v1.y + k2 * v2.y + k3 * v3.y,
k1 * v1.z + k2 * v2.z + k3 * v3.z);
}
#pragma mark - Rays
/*

5
src/basics.h
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@ -52,6 +52,11 @@ const Vector3 operator*(const float &lhs, const Vector3 &rhs);
std::ostream &operator<<(std::ostream &os, const Vector3 &v);
Vector3 LinearCombination(const double k1, const Vector3& v1,
const double k2, const Vector3& v2,
const double k3, const Vector3& v3);
struct Ray
{
Ray();