/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/
// Original file Copyright Crytek GMBH or its affiliates, used under license.

#ifndef CRYINCLUDE_CRYPHYSICS_HEIGHTFIELDGEOM_H
#define CRYINCLUDE_CRYPHYSICS_HEIGHTFIELDGEOM_H
#pragma once

#if ENABLE_CRY_PHYSICS

#include "trimesh.h"
#include "heightfieldbv.h"

class CHeightfield
    : public CTriMesh
{
public:
    CHeightfield() { m_pTree = &m_Tree; }
    virtual ~CHeightfield() { m_pTree = 0; }

    CHeightfield* CreateHeightfield(heightfield* phf);
    virtual int GetType() { return GEOM_HEIGHTFIELD; }
    virtual int Intersect(IGeometry* pCollider, geom_world_data* pdata1, geom_world_data* pdata2, intersection_params* pparams, geom_contact*& pcontacts);
    virtual int PrepareForIntersectionTest(geometry_under_test* pGTest, CGeometry* pCollider, geometry_under_test* pGTestColl, bool bKeepPrevContacts = false);
    virtual int PointInsideStatus(const Vec3& pt);
    virtual int FindClosestPoint(geom_world_data* pgwd, int& iPrim, int& iFeature, const Vec3& ptdst0, const Vec3& ptdst1,
        Vec3* ptres, int nMaxIters = 10);
    virtual void CalcVolumetricPressure(geom_world_data* gwd, const Vec3& epicenter, float k, float rmin,
        const Vec3& centerOfMass, Vec3& P, Vec3& L);
    virtual int IsConvex(float tolerance) { return 0; }
    virtual int DrawToOcclusionCubemap(const geom_world_data* pgwd, int iStartPrim, int nPrims, int iPass, SOcclusionCubeMap* cubeMap);
    virtual void PrepareForRayTest(float raylen) {}
    virtual CBVTree* GetBVTree() { return &m_Tree; }

    virtual const primitive* GetData() { return &m_hf; }
    virtual Vec3 GetCenter() { return m_hf.origin + (Vec3(m_hf.size.x, m_hf.size.y, 0) * 0.5f) * m_hf.Basis; }

    virtual int GetPrimitive(int iPrim, primitive* pprim) { *(heightfield*)pprim = m_hf; return sizeof(heightfield); }
    virtual void GetMemoryStatistics(ICrySizer* pSizer);

    heightfield m_hf;
    CHeightfieldBV m_Tree;
    float m_minHeight, m_maxHeight;
    int m_nVerticesAlloc, m_nTrisAlloc;
    Vec3 m_lastOriginOffs;
};

#endif // ENABLE_CRY_PHYSICS

#endif // CRYINCLUDE_CRYPHYSICS_HEIGHTFIELDGEOM_H