#include #include using namespace std; struct Vector { float x, y, z; Vector() {}; Vector(float, float, float); Vector operator+ (Vector); Vector operator- (Vector); Vector operator* (float); Vector cross(Vector); float dot(Vector); void normalise(); }; float magnitude(float, float, float); Vector::Vector(float a, float b, float c): x(a), y(b), z(c) {}; Vector Vector::operator+(Vector vec) { Vector tmp; tmp.x = x + vec.x; tmp.y = y + vec.y; tmp.z = z + vec.z; return tmp; }; Vector Vector::operator-(Vector vec) { Vector tmp; tmp.x = x - vec.x; tmp.y = y - vec.y; tmp.z = z - vec.z; return tmp; }; Vector Vector::operator*(float n) { Vector tmp; tmp.x = x * n; tmp.y = y * n; tmp.z = z * n; return tmp; }; Vector Vector::cross(Vector vec) { Vector tmp; tmp.x = y * vec.z - z * vec.y; tmp.y = z * vec.x - x * vec.z; tmp.z = x * vec.y - y * vec.x; return tmp; }; float Vector::dot(Vector vec) { x *= vec.x; y *= vec.y; z *= vec.z; return x + y + z; }; void Vector::normalise() { float length = magnitude(x, y, z); x /= length; y /= length; z /= length; }; float magnitude(float x, float y, float z) { float dx = pow(x, 2); float dy = pow(y, 2); float dz = pow(z, 2); return sqrt(dx + dy + dz); }; int main(int length, char* arg[]) { Vector vec1(1, 0, 1), vec2(1, 1, 0); // params cout << "Vec1: " << "(x:" << vec1.x << ", y:" << \ vec1.y << ", z:" << vec1.z << ")\n"; cout << "Vec2: " << "(x:" << vec2.x << ", y:" << \ vec2.y << ", z:" << vec2.z << ")\n\n"; // addition Vector add = vec1 + vec2; cout << "ADD: " << "(x:" << add.x << ", y:" << \ add.y << ", z:" << add.z << ")\n"; // subtraction Vector sub = vec1 - vec2; cout << "SUB: " << "(x:" << sub.x << ", y:" << \ sub.y << ", z:" << sub.z << ")\n"; // scale Vector scale = vec1 * 2; cout << "Scale X 2: " << "(x:" << scale.x << ", y:" << \ scale.y << ", z:" << scale.z << ")\n"; // cross Vector cross = vec1.cross(vec2); cout << "CROSS: " << "(x:" << cross.x << ", y:" << \ cross.y << ", z:" << cross.z << ")\n"; // dot float dot = vec1.dot(vec2); cout << "DOT: " << dot; cout << "\n"; // normalize vec1.normalise(); cout << "NORMAL: " << "(x:" << vec1.x << ", y:" << \ vec1.y << ", z:" << vec1.z << ")\n"; return 0; }

Vector with operator's overloading