[ox/std] Hopefully fix MSVC build

deps/ox/src/ox/std/conv.hpp

@@ -14,32 +14,20 @@
 
 namespace ox {
 
-constexpr Vec2::operator Point() const noexcept {
-	return {
-			static_cast<int32_t>(x),
-			static_cast<int32_t>(y),
-	};
-}
+constexpr Point::Point(Vec2 const&pt) noexcept:
+	x(static_cast<int32_t>(pt.x)),
+	y(static_cast<int32_t>(pt.y)) {}
 
-constexpr Vec2::operator Size() const noexcept {
-	return {
-			static_cast<int32_t>(x),
-			static_cast<int32_t>(y),
-	};
-}
+constexpr Size::Size(Vec2 const&pt) noexcept:
+	width(static_cast<int32_t>(pt.x)),
+	height(static_cast<int32_t>(pt.y)) {}
 
-constexpr Point::operator Vec2() const noexcept {
-	return {
-			static_cast<float>(x),
-			static_cast<float>(y),
-	};
-}
+constexpr Vec2::Vec2(Point const&pt) noexcept:
+		x(static_cast<float>(pt.x)),
+		y(static_cast<float>(pt.y)) {}
 
-constexpr Size::operator Vec2() const noexcept {
-	return {
-		static_cast<float>(width),
-		static_cast<float>(height),
-	};
-}
+constexpr Vec2::Vec2(Size const&pt) noexcept:
+	x(static_cast<float>(pt.width)),
+	y(static_cast<float>(pt.height)) {}
 
 }

deps/ox/src/ox/std/point.hpp

@@ -24,6 +24,8 @@ class Point {
 
 		constexpr Point(int x, int y) noexcept;
 
+		explicit constexpr Point(class Vec2 const&pt) noexcept;
+
 		constexpr Point operator+(const Point &p) const noexcept;
 
 		constexpr Point operator-(const Point &p) const noexcept;

deps/ox/src/ox/std/size.hpp

@@ -24,6 +24,8 @@ class Size {
 
 		constexpr Size(int width, int height) noexcept;
 
+		explicit constexpr Size(class Vec2 const&pt) noexcept;
+
 		constexpr Size operator+(Size p) const noexcept;
 
 		constexpr Size operator-(Size p) const noexcept;

deps/ox/src/ox/std/vec.hpp

@@ -142,6 +142,10 @@ class Vec2 {
 
 		constexpr Vec2() noexcept = default;
 
+		explicit constexpr Vec2(class Point const&pt) noexcept;
+
+		explicit constexpr Vec2(class Size const&pt) noexcept;
+
 		template<typename ...Args>
 		constexpr Vec2(float pX, float pY) noexcept: x(pX), y(pY) {
 		}