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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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BIN
RT
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4
imgui.ini
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@ -7,10 +7,10 @@ Pos=1515,93
Size=368,276 Size=368,276
[Window][Material] [Window][Material]
Pos=1613,197 Pos=42,246
Size=290,238 Size=290,238
[Window][Camera] [Window][Camera]
Pos=1618,9 Pos=609,294
Size=279,183 Size=279,183

19
includes/RT/ObjParser.hpp Normal file
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@ -0,0 +1,19 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ObjParser.hpp :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/01/13 13:56:04 by tomoron #+# #+# */
/* Updated: 2025/01/13 13:56:05 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
# include "RT.hpp"
class ObjParser
{
public:
ObjParser(std::stringstream RT
}

6
includes/RT/SceneParser.hpp
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@ -6,7 +6,7 @@
/* By: TheRed <TheRed@students.42.fr> +#+ +:+ +#+ */ /* By: TheRed <TheRed@students.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2024/12/26 21:37:37 by TheRed #+# #+# */ /* Created: 2024/12/26 21:37:37 by TheRed #+# #+# */
/* Updated: 2024/12/26 21:37:37 by TheRed ### ########.fr */ /* Updated: 2025/01/13 17:39:22 by tomoron ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@ -25,6 +25,10 @@ class SceneParser
private: private:
void parseMaterial(std::stringstream &line); void parseMaterial(std::stringstream &line);
void parseCamera(std::stringstream &line); void parseCamera(std::stringstream &line);
void parseObj(std::stringstream &line);
glm::vec3 getVertex(std::stringstream &line);
Triangle *getFace(std::stringstream &line, std::vector<glm::vec3> &vertices);
long int getVertexIndex(std::stringstream &line, size_t size);
Scene *_scene; Scene *_scene;

11
includes/RT/objects/Triangle.hpp
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@ -1,12 +1,12 @@
/* ************************************************************************** */ /* ************************************************************************** */
/* */ /* */
/* ::: :::::::: */ /* ::: :::::::: */
/* Triangle.hpp :+: :+: :+: */ /* Triangle.hpp :+: :+: :+: */
/* +:+ +:+ +:+ */ /* +:+ +:+ +:+ */
/* By: ycontre <ycontre@student.42.fr> +#+ +:+ +#+ */ /* By: ycontre <ycontre@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2024/12/23 19:12:51 by ycontre #+# #+# */ /* Created: 2024/12/23 19:12:51 by ycontre #+# #+# */
/* Updated: 2024/12/23 19:47:09 by ycontre ### ########.fr */ /* Updated: 2025/01/13 17:59:21 by tomoron ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@ -53,7 +53,12 @@ class Triangle : public Object
catch (const std::exception &e) { throw; } catch (const std::exception &e) { throw; }
} }
Triangle(const glm::vec3& position, const glm::vec3& vertex2, const glm::vec3& vertex3, const int mat_index) Triangle(const glm::vec3& position, const glm::vec3& vertex2, const glm::vec3& vertex3, const int mat_index)
: Object(position, mat_index), _vertex2(vertex2), _vertex3(vertex3) {} : Object(position, mat_index), _vertex2(vertex2), _vertex3(vertex3) {
_vertex2 -= _position; //optimization
_vertex3 -= _position; //optimization
_normal = glm::normalize(glm::cross(_vertex2, _vertex3)); //optimization
}
const glm::vec3 &getVertex2() const { return (_vertex2); } const glm::vec3 &getVertex2() const { return (_vertex2); }
const glm::vec3 &getVertex3() const { return (_vertex3); } const glm::vec3 &getVertex3() const { return (_vertex3); }

402
obj/small_teapot.obj Normal file
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obj/teapot.obj Normal file
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18
scenes/test.rt
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@ -12,12 +12,14 @@ MAT 255 255 255 5.0 0.0 0.0 //light
# sp -100 30 50 50 6 # sp -100 30 50 50 6
sp 0 -25 0 50 4 #sp 0 -25 0 50 4
#
#sp 1 1 -0.5 2 0
#sp -0.8 0.8 0 1.5 1
#sp -2.2 0.4 0.25 1 2
#sp -3 0.2 0.50 0.75 3
#sp -3.8 -0.1 0.60 0.5 5
#
#cy 0 1 2 0.5 2 -1.5 0 0.75 1
sp 1 1 -0.5 2 0 OBJ obj/teapot.obj
sp -0.8 0.8 0 1.5 1
sp -2.2 0.4 0.25 1 2
sp -3 0.2 0.50 0.75 3
sp -3.8 -0.1 0.60 0.5 5
cy 0 1 2 0.5 2 -1.5 0 0.75 1

2
srcs/RT.cpp
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@ -6,7 +6,7 @@
/* By: ycontre <ycontre@student.42.fr> +#+ +:+ +#+ */ /* By: ycontre <ycontre@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2024/09/27 14:51:49 by TheRed #+# #+# */ /* Created: 2024/09/27 14:51:49 by TheRed #+# #+# */
/* Updated: 2025/01/11 16:14:24 by tomoron ### ########.fr */ /* Updated: 2025/01/13 17:40:45 by tomoron ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */

66
srcs/class/SceneParser.cpp
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@ -6,7 +6,7 @@
/* By: TheRed <TheRed@students.42.fr> +#+ +:+ +#+ */ /* By: TheRed <TheRed@students.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2024/12/26 21:43:51 by TheRed #+# #+# */ /* 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) bool SceneParser::parseLine(const std::string &line)
{ {
if (line.empty() || line[0] == '#') if (line.empty() || line[0] == '#')
@ -155,6 +217,8 @@ bool SceneParser::parseLine(const std::string &line)
this->parseMaterial(ss); this->parseMaterial(ss);
else if (identifier == "CAM") else if (identifier == "CAM")
this->parseCamera(ss); this->parseCamera(ss);
else if (identifier == "OBJ")
parseObj(ss);
} }
catch (const std::exception& e) catch (const std::exception& e)
{ {