HeightField.h

#pragma once
// ===========================================================================
// Copyright (c) 2015 Toolchefs Ltd. All rights reserved.
//
// Use of this software is subject to the terms of the Toolchefs license
// agreement provided at the time of installation or download, or which
// otherwise accompanies this software in either electronic or hard copy form.
// ===========================================================================
 
#include <Atoms/Globals.h>
#include <AtomsCore/AtomsMath.h>
 
namespace Atoms
{
    class ATOMS_EXPORT HeightField
    {
    public:
 
        enum FieldType
        {
            kDefault = 0,
            kMesh,
            kHeightField
        };
 
        class HitResult
        {
        public:
            AtomsCore::Vector3f point;
            AtomsCore::Vector3f normal;
            AtomsCore::Vector2f uv;
            float t;
            unsigned int faceId;
        };
 
        HeightField();
 
        virtual ~HeightField();
 
        virtual bool intersect(
            const AtomsCore::Vector3f& orig,
            const AtomsCore::Vector3f& dir,
            HitResult& result,
            bool bothDirection = false
        ) const = 0;
 
        virtual bool closestPoint(
            const AtomsCore::Vector3f& orig,
            HitResult& result
        ) const = 0;
 
        virtual void buildIntersectionGrid(short gridMode);
 
        virtual size_t typeId() const = 0;
 
    };
}