convexhullcollisionshape.h

// © Copyright 2010 - 2014 BlackTopp Studios Inc.
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*/
/* The original authors have included a copy of the license specified above in the
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*/
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*/
#ifndef _physicsconvexhullcollisionshape_h
#define _physicsconvexhullcollisionshape_h

#include "Physics/primitivecollisionshape.h"

class btConvexHullShape;

namespace Mezzanine
{
    namespace Physics
    {
        ///////////////////////////////////////////////////////////////////////////////
        /// @class ConvexHullCollisionShape
        /// @headerfile collisionshape.h
        /// @brief A simple convex shape built from a low number of points in local space.
        /// @details A convex hull is commonly used to generate a simple approximation of another, and
        /// more complicated, shape.  Usually the number of points in a convex hull doesn't exceed 32.  @n @n
        /// When a convex hull is generated automatically from an algorithm, the best way to think of
        /// the resulting shape in relation to the original shape is if you were to wrap a rubber band
        /// around it on one plane.  Then do this for all planes and all surfaces.  The resulting shape looks
        /// and behaves similar to that.
        ///////////////////////////////////////
        class MEZZ_LIB ConvexHullCollisionShape : public PrimitiveCollisionShape
        {
        public:
            /// @brief Class Constructor.
            /// @param Name The name of this Shape.
            /// @param Points A vector of vector3's containing all the points in local space to construct this shape from.
            ConvexHullCollisionShape(const String& Name, const std::vector<Vector3>& Points);
            /// @internal
            /// @brief Internal Constructor.
            /// @param Name The name of this Shape.
            /// @param BulletShape The internal shape this shape is based on.
            ConvexHullCollisionShape(const String& Name, btConvexHullShape* BulletShape);
            /// @copydoc BoxCollisionShape::BoxCollisionShape(XML::Node OneNode)
            ConvexHullCollisionShape(XML::Node OneNode);
            /// @brief Class Destructor.
            virtual ~ConvexHullCollisionShape();
            /// @brief Adds a point to this shape.
            /// @param Point The location in local space to be added.
            virtual void AddPoint(const Vector3& Point);

            /// @brief Gets an unscaled stored point in this ConvexHull.
            /// @return Returns a Vector3 representing the unscaled location in local space of the specified point.
            /// @param Index The index of the point desired.
            virtual Vector3 GetUnscaledPoint(const Whole& Index) const;
            /// @brief Gets a stored point as it is scaled in this ConvexHull.
            /// @return Returns a Vector3 representing the scaled location in local space of the specified point.
            /// @param Index The index of the point desired.
            virtual Vector3 GetPoint(const Whole& Index) const;
            /// @brief Gets the total number of points being stored in this shape.
            /// @return Returns a whole representing the current number of points in this shape.
            virtual Whole GetNumPoints() const;
            /// @brief Checks to see if a point in local space is inside this shape.
            /// @return Returns a bool indicating whether or not the specified point is inside the shape.
            /// @param Location The specified point to perform the check.
            /// @param Tolerance The amount of leeway to give in the check.  If the distance from the
            /// specified point is equal or less then the Tolorance provided then this will return true.
            virtual bool IsInside(const Vector3& Location, const Real& Tolerance) const;
            /// @copydoc CollisionShape::GetType()
            virtual CollisionShape::ShapeType GetType() const;
            /// @copydoc CollisionShape::GetBulletShape
            virtual btConvexHullShape* GetBulletHullShape() const;

            /// @copydoc CollisionShape::GetBulletShape
            virtual void ProtoSerialize(XML::Node& CurrentRoot) const;
            /// @copydoc CollisionShape::GetBulletShape
            virtual void ProtoDeSerialize(const XML::Node& OneNode);
            /// @brief Get the name of the the XML tag this class will leave behind as its instances are serialized.
            /// @return A string containing "ConeCollisionShape"
            static String SerializableName();
        };// ©onvexHullCollisionShape
    }//Physics
}//Mezzanine

/// @copydoc operator << (std::ostream& stream, const Mezzanine::Physics::CollisionShape& ShapeToSerialize)
std::ostream& MEZZ_LIB operator << (std::ostream& stream, const Mezzanine::Physics::ConvexHullCollisionShape& ShapeToSerialize);
/// @copydoc operator >> (std::istream& stream, Mezzanine::Physics::CollisionShape& x)
std::istream& MEZZ_LIB operator >> (std::istream& stream, Mezzanine::Physics::ConvexHullCollisionShape& x);
/// @copydoc operator >> (const Mezzanine::XML::Node& OneNode, Mezzanine::Physics::CollisionShape& x)
void MEZZ_LIB operator >> (const Mezzanine::XML::Node& OneNode, Mezzanine::Physics::ConvexHullCollisionShape& x);


#endif