修改游戏底层矩阵相关

source/math/Constants.h

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+// 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
+
+namespace ember
+{
+    namespace math
+    {
+
+        constexpr auto PI_F = 3.141592653589793f;
+        constexpr auto PI_F_2 = 1.570796326794896f;
+        constexpr auto PI_F_X_2 = 6.283185307179586f;
+
+        constexpr auto PI_D = 3.14159265358979323846;
+        constexpr auto PI_D_2 = 1.57079632679489661923;
+        constexpr auto PI_D_X_2 = 6.28318530717958647692;
+
+        constexpr auto FLOAT_MAX = 3.402823466e+38F;
+        constexpr auto FLOAT_MIN = 1.175494351e-38F;
+
+    } // namespace math
+} // namespace ember