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add obj parser

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tomoron
2025-01-13 18:09:25 +01:00
parent 0482f34ce5
commit 449f059a07
10 changed files with 10480 additions and 18 deletions
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66
srcs/class/SceneParser.cpp
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@ -6,7 +6,7 @@
/* By: TheRed <TheRed@students.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/12/26 21:43:51 by TheRed #+# #+# */
/* Updated: 2024/12/26 21:43:51 by TheRed ### ########.fr */
/* Updated: 2025/01/13 17:59:30 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -127,6 +127,68 @@ void SceneParser::parseCamera(std::stringstream &line)
}
glm::vec3 SceneParser::getVertex(std::stringstream &line)
{
glm::vec3 res;
std::cout << line.str() << std::endl;
if(!(line >> res.x >> res.y >> res.z))
throw std::runtime_error("syntax error in obj file while parsing vertex");
res.z *= -1;
return(res);
}
long int SceneParser::getVertexIndex(std::stringstream &line, size_t size)
{
long int index;
if(!(line >> index))
throw std::runtime_error("syntax error in obj file while parsing face");
if((size_t)index > size || index == 0 || (index < 0 && (size_t)(-index) > size))
throw std::runtime_error("obj file error, invalid vertex index");
if(index < 0)
index = size - index;
return(index - 1);
}
Triangle *SceneParser::getFace(std::stringstream &line, std::vector<glm::vec3> &vertices)
{
glm::vec3 triangle[3];
triangle[0] = vertices[getVertexIndex(line, vertices.size())];
triangle[1] = vertices[getVertexIndex(line, vertices.size())];
triangle[2] = vertices[getVertexIndex(line, vertices.size())];
std::cout << triangle[0].x << " " << triangle[0].y << " " << triangle[0].z << std::endl;
std::cout << triangle[1].x << " " << triangle[1].y << " " << triangle[1].z << std::endl;
std::cout << triangle[2].x << " " << triangle[2].y << " " << triangle[2].z << std::endl;
return(new Triangle(triangle[0], triangle[1], triangle[2], 0));
}
void SceneParser::parseObj(std::stringstream &objInfo)
{
std::vector<glm::vec3> vertices;
std::string filename;
std::string line;
std::string identifier;
std::ifstream file;
objInfo >> filename;
file.open(filename);
if (!file.is_open())
throw std::runtime_error("OBJ : could not open object file");
while (getline(file, line))
{
if(line[0] == '#' || line.empty())
continue;
std::stringstream lineStream(line);
lineStream >> identifier;
if(identifier == "v")
vertices.push_back(getVertex(lineStream));
else if (identifier == "f")
_scene->addObject(getFace(lineStream, vertices));
}
}
bool SceneParser::parseLine(const std::string &line)
{
if (line.empty() || line[0] == '#')
@ -155,6 +217,8 @@ bool SceneParser::parseLine(const std::string &line)
this->parseMaterial(ss);
else if (identifier == "CAM")
this->parseCamera(ss);
else if (identifier == "OBJ")
parseObj(ss);
}
catch (const std::exception& e)
{