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// This code contains NVIDIA Confidential Information and is disclosed to you
// under a form of NVIDIA software license agreement provided separately to you.
//
// Notice
// NVIDIA Corporation and its licensors retain all intellectual property and
// proprietary rights in and to this software and related documentation and
// any modifications thereto. Any use, reproduction, disclosure, or
// distribution of this software and related documentation without an express
// license agreement from NVIDIA Corporation is strictly prohibited.
//
// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
//
// Information and code furnished is believed to be accurate and reliable.
// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
// information or for any infringement of patents or other rights of third parties that may
// result from its use. No license is granted by implication or otherwise under any patent
// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
// This code supersedes and replaces all information previously supplied.
// NVIDIA Corporation products are not authorized for use as critical
// components in life support devices or systems without express written approval of
// NVIDIA Corporation.
//
// Copyright (c) 2020 NVIDIA Corporation. All rights reserved.
#include "NvBlastExtExporterObjReader.h"
#pragma warning(push)
#pragma warning(disable:4706)
#pragma warning(disable:4702)
#define TINYOBJLOADER_IMPLEMENTATION
#include "tiny_obj_loader.h"
#pragma warning(pop)
#include <iostream>
#include "PxVec3.h"
#include "PxVec2.h"
#include "NvBlastExtAuthoringMesh.h"
using physx::PxVec3;
using physx::PxVec2;
using namespace Nv::Blast;
ObjFileReader::ObjFileReader()
{
}
void ObjFileReader::release()
{
delete this;
}
void ObjFileReader::loadFromFile(const char* filename)
{
std::vector<tinyobj::shape_t> shapes;
std::vector<tinyobj::material_t> mats;
std::string err;
std::string mtlPath;
int32_t lastDelimeter = strlen(filename);
while (lastDelimeter > 0 && filename[lastDelimeter] != '/' && filename[lastDelimeter] != '\\')
{
lastDelimeter--;
}
mtlPath = std::string(filename, filename + lastDelimeter);
if (mtlPath == "")
{
mtlPath = '.';
}
mtlPath += '/';
bool ret = tinyobj::LoadObj(shapes, mats, err, filename, mtlPath.c_str());
// can't load?
if (!ret)
{
return;
}
if (shapes.size() > 1)
{
std::cout << "Can load only one object per mesh" << std::endl;
}
if (!mats.empty())
{
if (mats.size() == 1 && mats[0].name == "")
{
mats[0].name = "Default";
}
for (uint32_t i = 0; i < mats.size(); ++i)
{
mMaterialNames.push_back(mats[i].name);
}
}
mVertexPositions.clear();
mVertexNormals.clear();
mVertexUv.clear();
mIndices.clear();
auto& psVec = shapes[0].mesh.positions;
for (uint32_t i = 0; i < psVec.size() / 3; ++i)
{
mVertexPositions.push_back({psVec[i * 3], psVec[i * 3 + 1], psVec[i * 3 + 2]});
}
auto& nmVec = shapes[0].mesh.normals;
for (uint32_t i = 0; i < nmVec.size() / 3; ++i)
{
mVertexNormals.push_back({nmVec[i * 3], nmVec[i * 3 + 1], nmVec[i * 3 + 2]});
}
auto& txVec = shapes[0].mesh.texcoords;
for (uint32_t i = 0; i < txVec.size() / 2; ++i)
{
mVertexUv.push_back({txVec[i * 2], txVec[i * 2 + 1]});
}
mIndices = shapes[0].mesh.indices;
mPerFaceMatId = shapes[0].mesh.material_ids;
for (uint32_t i = 0; i < mPerFaceMatId.size(); ++i)
{
if (mPerFaceMatId[i] == -1) // TinyOBJ loader sets ID to -1 when .mtl file not found. Set to default 0 material.
{
mPerFaceMatId[i] = 0;
}
}
}
bool ObjFileReader::isCollisionLoaded()
{
return false;
};
uint32_t ObjFileReader::getCollision(uint32_t*& hullsOffset, Nv::Blast::CollisionHull**& hulls)
{
hullsOffset = nullptr;
hulls = nullptr;
return 0;
};
NvcVec3* ObjFileReader::getPositionArray()
{
return mVertexPositions.data();
};
NvcVec3* ObjFileReader::getNormalsArray()
{
return mVertexNormals.data();
};
NvcVec2* ObjFileReader::getUvArray()
{
return mVertexUv.data();
};
uint32_t* ObjFileReader::getIndexArray()
{
return mIndices.data();
};
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