| #include "rive/math/vec2d.hpp" |
| #include "rive/math/mat2d.hpp" |
| #include <cmath> |
| |
| using namespace rive; |
| |
| Vec2D Vec2D::transformDir(const Vec2D& a, const Mat2D& m) { |
| return { |
| m[0] * a.x() + m[2] * a.y(), |
| m[1] * a.x() + m[3] * a.y(), |
| }; |
| } |
| float Vec2D::length() const { return std::sqrt(lengthSquared()); } |
| |
| Vec2D Vec2D::normalized() const { |
| auto len2 = lengthSquared(); |
| auto scale = len2 > 0 ? (1 / std::sqrt(len2)) : 1; |
| return *this * scale; |
| } |
| |
| Vec2D Vec2D::lerp(const Vec2D& a, const Vec2D& b, float f) { |
| return { |
| a.x() + f * (b[0] - a.x()), |
| a.y() + f * (b[1] - a.y()), |
| }; |
| } |