198     f32 y;  //  member
238     explicit VEC2(const f32* p) { x = p[0]; y = p[1]; }  in VEC2()
240     VEC2(const VEC2_& v) { x = v.x; y = v.y; }  in VEC2()
242     VEC2(f32 fx, f32 fy) { x = fx; y = fy; }  in VEC2()
261     self_type& operator += (const self_type& rhs) { x += rhs.x; y += rhs.y; return *this; }
264     self_type& operator -= (const self_type& rhs) { x -= rhs.x; y -= rhs.y; return *this; }
267     self_type& operator *= (f32 f) { x *= f; y *= f; return *this; }
270     self_type& operator *= (const self_type& rhs) { x *= rhs.x; y *= rhs.y; return *this; }
273     self_type& operator /= (f32 f) { f32 r = 1.f / f; x *= r; y *= r; return *this; }
279     self_type operator - () const { return self_type(-x, -y); }
282     self_type operator + (const self_type& rhs) const { return self_type(x + rhs.x, y + rhs.y); }
285     self_type operator - (const self_type& rhs) const { return self_type(x - rhs.x, y - rhs.y); }
288     self_type operator * (f32 f) const { return self_type(f * x, f * y); }
291     self_type operator / (f32 f) const { f32 r = 1.f / f; return self_type(r * x, r * y); }
314     f32 LenSq() const { return x * x + y * y; }  in LenSq()
317     f32 LengthSquare() const { return x * x + y * y; }  in LengthSquare()
320     f32 Length() const { return FSqrt(this->x * this->x + this->y * this->y); }  in Length()
370     void Set(f32 fx, f32 fy) { x = fx; y = fy; }  in Set()
379     bool operator == (const self_type& rhs) const { return x == rhs.x && y == rhs.y; }
382     bool operator != (const self_type& rhs) const { return x != rhs.x || y != rhs.y; }
416     pOut->x = p1->x + p2->x; pOut->y = p1->y + p2->y;   in VEC2Add()
427     pOut->x = p1->x - p2->x; pOut->y = p1->y - p2->y;   in VEC2Sub()
435     pOut->y = p1->y * p2->y;  in VEC2Mult()
446     pOut->x = p->x * scale; pOut->y = p->y * scale;  in VEC2Scale()
455     pOut->y = p1->y + t * (p2->y - p1->y);  in VEC2Lerp()
465     return p1->x * p2->x + p1->y * p2->y;  in VEC2Dot()
472     return p->x * p->x + p->y * p->y;  in VEC2LenSq()
476 VEC2Len(const VEC2* p) { return FSqrt(p->x * p->x + p->y * p->y); }  in VEC2Len()
482 operator * (f32 f, const VEC2& rhs) { return VEC2(f * rhs.x, f * rhs.y); }