Engine directory for ticket #1

Engine/source/math/mConstants.h

@@ -0,0 +1,58 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// 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.
+//-----------------------------------------------------------------------------
+
+#ifndef _MCONSTANTS_H_
+#define _MCONSTANTS_H_
+
+#undef M_PI
+#undef M_SQRT2
+
+#define M_PI         3.14159265358979323846
+#define M_SQRT2      1.41421356237309504880
+
+#define M_2PI        (3.1415926535897932384626433 * 2.0)
+#define M_SQRTHALF   0.7071067811865475244008443
+
+#define M_HALFPI     1.57079632679489661923
+
+#define M_PI_F         3.14159265358979323846f
+#define M_SQRT2_F      1.41421356237309504880f
+
+#define M_2PI_F        (3.1415926535897932384626433f * 2.0f)
+#define M_SQRTHALF_F   0.7071067811865475244008443f
+
+#define M_HALFPI_F     1.57079632679489661923f
+
+#define M_CONST_E_F    2.7182818284590452353602874f
+
+#define POINT_EPSILON (1e-4) ///< Epsilon for point types.
+
+
+/// Result of an overlap test.
+enum OverlapTestResult
+{
+   GeometryInside = 1,          ///< Completely inside test volume/space.
+   GeometryIntersecting = 0,    ///< Partly inside and partly outside test volume/space.
+   GeometryOutside = -1         ///< No overlap with test volume/space.
+};
+
+#endif