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#include "ObjModel.h"
ObjModel::ObjModel() {}
ObjModel::ObjModel(std::string fileName)
{
int hlp = 0;
std::ifstream f(fileName);
std::string s0;
while (getline(f, s0)) {
std::stringstream ss0(s0);
std::string s1 = "";
ss0 >> s1;
if (s1.compare(0, s1.length(), "v") == 0) {
ss0 >> s1;
float x = std::stof(s1);
ss0 >> s1;
float y = std::stof(s1);
ss0 >> s1;
float z = std::stof(s1);
Vertice t(x, y, z, 1.0f, 0.0f, 0.0f);
vertices.push_back(t);
}
else if (s1.compare(0, s1.length(), "vn") == 0) {
ss0 >> s1;
float x = std::stof(s1);
ss0 >> s1;
float y = std::stof(s1);
ss0 >> s1;
float z = std::stof(s1);
Vector4f v(x, y, z, 0.0f);
normals.push_back(v);
}
else if (s1.compare(0, s1.length(), "vt") == 0) {
ss0 >> s1;
float u = std::stof(s1);
ss0 >> s1;
float v = std::stof(s1);
Texture_Coordinates kt;
kt.u = u; kt.v = v;
uvcoo.push_back(kt);
}
else if (s1.compare(0, s1.length(), "f") == 0) {
Triangle pt;
for (int i = 0; i < 3; i++) {
ss0 >> s1;
std::stringstream ss1(s1);
std::string s2;
for (int j = 0; std::getline(ss1, s2, '/'); j++) {
pt.p[i][j] = std::stoi(s2);
}
}
faces.push_back(pt);
}
}
}
ObjModel::ObjModel(const ObjModel& a)
{
vertices = a.vertices;
uvcoo = a.uvcoo;
normals = a.normals;
faces = a.faces;
}
ObjModel ObjModel::multiplyMatrix(Matrix4f& a)
{
ObjModel hlp = *this;
for (int i = 0; i < vertices.size(); i++)
{
hlp.vertices[i] = hlp.vertices[i].multiplyMatrix(a);
}
return hlp;
}
void ObjModel::divideW()
{
for (int i = 0; i < vertices.size(); i++)
{
vertices[i] = vertices[i].divideW();
}
}
void ObjModel::screenspace(int width, int height)
{
for (int i = 0; i < vertices.size(); i++)
{
vertices[i].screenspace(width, height);
}
}
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