1 files changed, 134 insertions, 0 deletions
diff --git a/src/foundation/Qt3DSPlane.h b/src/foundation/Qt3DSPlane.h
new file mode 100644
index 0000000..378c3bc
--- /dev/null
+++ b/src/foundation/Qt3DSPlane.h
@@ -0,0 +1,134 @@
+/****************************************************************************
+**
+** Copyright (C) 2008-2012 NVIDIA Corporation.
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QT3DS_FOUNDATION_QT3DS_PLANE_H
+#define QT3DS_FOUNDATION_QT3DS_PLANE_H
+
+/** \addtogroup foundation
+@{
+*/
+
+#include "foundation/Qt3DSMath.h"
+#include "foundation/Qt3DSVec3.h"
+
+#ifndef QT3DS_DOXYGEN
+namespace qt3ds {
+#endif
+
+/**
+\brief Representation of a plane.
+
+ Plane equation used: n.dot(v) + d = 0
+*/
+class NVPlane
+{
+public:
+    /**
+    \brief Constructor
+    */
+    QT3DS_CUDA_CALLABLE QT3DS_FORCE_INLINE NVPlane() {}
+
+    /**
+    \brief Constructor from a normal and a distance
+    */
+    QT3DS_CUDA_CALLABLE QT3DS_FORCE_INLINE NVPlane(NVReal nx, NVReal ny, NVReal nz, NVReal distance)
+        : n(nx, ny, nz)
+        , d(distance)
+    {
+    }
+
+    /**
+    \brief Constructor from a normal and a distance
+    */
+    QT3DS_CUDA_CALLABLE QT3DS_FORCE_INLINE NVPlane(const QT3DSVec3 &normal, NVReal distance)
+        : n(normal)
+        , d(distance)
+    {
+    }
+
+    /**
+    \brief Constructor from a point on the plane and a normal
+    */
+    QT3DS_CUDA_CALLABLE QT3DS_FORCE_INLINE NVPlane(const QT3DSVec3 &point, const QT3DSVec3 &normal)
+        : n(normal)
+        , d(-point.dot(n)) // p satisfies normal.dot(p) + d = 0
+    {
+    }
+
+    /**
+    \brief Constructor from three points
+    */
+    QT3DS_CUDA_CALLABLE QT3DS_FORCE_INLINE NVPlane(const QT3DSVec3 &p0, const QT3DSVec3 &p1, const QT3DSVec3 &p2)
+    {
+        n = (p1 - p0).cross(p2 - p0).getNormalized();
+        d = -p0.dot(n);
+    }
+
+    QT3DS_CUDA_CALLABLE QT3DS_FORCE_INLINE NVReal distance(const QT3DSVec3 &p) const { return p.dot(n) + d; }
+
+    QT3DS_CUDA_CALLABLE QT3DS_FORCE_INLINE bool contains(const QT3DSVec3 &p) const
+    {
+        return NVAbs(distance(p)) < (1.0e-7f);
+    }
+
+    /**
+    \brief projects p into the plane
+    */
+    QT3DS_CUDA_CALLABLE QT3DS_FORCE_INLINE QT3DSVec3 project(const QT3DSVec3 &p) const
+    {
+        return p - n * distance(p);
+    }
+
+    /**
+    \brief find an arbitrary point in the plane
+    */
+    QT3DS_CUDA_CALLABLE QT3DS_FORCE_INLINE QT3DSVec3 pointInPlane() const { return -n * d; }
+
+    /**
+    \brief equivalent plane with unit normal
+    */
+
+    QT3DS_CUDA_CALLABLE QT3DS_FORCE_INLINE void normalize()
+    {
+        NVReal denom = 1.0f / n.magnitude();
+        n *= denom;
+        d *= denom;
+    }
+
+    QT3DSVec3 n; //!< The normal to the plane
+    NVReal d; //!< The distance from the origin
+};
+
+#ifndef QT3DS_DOXYGEN
+} // namespace qt3ds
+#endif
+
+/** @} */
+#endif