修改游戏底层矩阵相关

source/math/Rect.hpp

@@ -0,0 +1,154 @@
+// Copyright (c) 2016-2018 Ember - Nomango
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#pragma once
+#include <math/Vec2.hpp>
+
+namespace ember
+{
+    namespace math
+    {
+        template <typename _Ty>
+        struct RectT
+        {
+        public:
+            using ValueType = _Ty;
+
+            Vec2T<ValueType> left_top;
+            Vec2T<ValueType> right_bottom;
+
+        public:
+            RectT() {}
+
+            RectT(ValueType left, ValueType top, ValueType right, ValueType bottom)
+                : left_top(left, top), right_bottom(right, bottom)
+            {
+            }
+
+            RectT(const Vec2T<ValueType> &left_top, const Vec2T<ValueType> &right_bottom)
+                : left_top(left_top), right_bottom(right_bottom)
+            {
+            }
+
+            RectT(const RectT &other)
+                : left_top(other.left_top), right_bottom(other.right_bottom)
+            {
+            }
+
+            RectT &operator=(const RectT &other)
+            {
+                left_top = other.left_top;
+                right_bottom = other.right_bottom;
+                return *this;
+            }
+
+            inline bool operator==(const RectT &rect) const
+            {
+                return (left_top == rect.left_top) && (right_bottom == rect.right_bottom);
+            }
+
+            inline void Set(ValueType left, ValueType top, ValueType right, ValueType bottom)
+            {
+                left_top = Vec2T<ValueType>{left, top};
+                right_bottom = Vec2T<ValueType>{right, bottom};
+            }
+
+            inline Vec2T<ValueType> GetCenter() const
+            {
+                return Vec2T<ValueType>{(left_top.x + right_bottom.x) / 2, (left_top.y + right_bottom.y) / 2};
+            }
+
+            inline Vec2T<ValueType> GetLeftTop() const
+            {
+                return left_top;
+            }
+
+            inline Vec2T<ValueType> GetRightBottom() const
+            {
+                return right_bottom;
+            }
+
+            inline Vec2T<ValueType> GetRightTop() const
+            {
+                return Vec2T<ValueType>{right_bottom.x, left_top.y};
+            }
+
+            inline Vec2T<ValueType> GetLeftBottom() const
+            {
+                return Vec2T<ValueType>{left_top.x, right_bottom.y};
+            }
+
+            inline ValueType GetLeft() const
+            {
+                return left_top.x;
+            }
+
+            inline ValueType GetTop() const
+            {
+                return left_top.y;
+            }
+
+            inline ValueType GetRight() const
+            {
+                return right_bottom.x;
+            }
+
+            inline ValueType GetBottom() const
+            {
+                return right_bottom.y;
+            }
+
+            inline ValueType GetWidth() const
+            {
+                return right_bottom.x - left_top.x;
+            }
+
+            inline ValueType GetHeight() const
+            {
+                return right_bottom.y - left_top.y;
+            }
+
+            inline Vec2T<ValueType> GetSize() const
+            {
+                return Vec2T<ValueType>{GetWidth(), GetHeight()};
+            }
+
+            inline bool IsEmpty() const
+            {
+                return left_top.IsOrigin() && right_bottom.IsOrigin();
+            }
+
+            inline bool ContainsPoint(const Vec2T<ValueType> &point) const
+            {
+                return point.x >= left_top.x && point.x <= right_bottom.x && point.y >= left_top.y && point.y <= right_bottom.y;
+            }
+
+            inline bool Intersects(const RectT &rect) const
+            {
+                return !(right_bottom.x < rect.left_top.x || rect.right_bottom.x < left_top.x || right_bottom.y < rect.left_top.y || rect.right_bottom.y < left_top.y);
+            }
+
+            static inline RectT Infinite()
+            {
+                return RectT{-math::FLOAT_MAX, -math::FLOAT_MAX, math::FLOAT_MAX, math::FLOAT_MAX};
+            }
+        };
+    } // namespace math
+} // namespace ember