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Ben
2019-02-22 21:55:53 +00:00
parent 8efb410bcd
commit a170621eea
41 changed files with 462671 additions and 462656 deletions
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116
legacy/object.cpp
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@@ -1,58 +1,58 @@
#include "object.h"
#include <fstream>
// https://en.wikibooks.org/wiki/OpenGL_Programming/Modern_OpenGL_Tutorial_Load_OBJ
void LoadOBJ(Logger& logger, std::string file, std::vector<glm::vec3>& vertices, std::vector<glm::vec3>& normals, std::vector<GLushort>& elements) {
std::ifstream in(file, std::ios::in);
if (!in) {
logger << LOGGER_ERROR << "Cannot open " << file << LOGGER_ENDL;
return;
}
std::string line;
while (getline(in, line)) {
if (line.substr(0,2) == "v ") {
std::istringstream s(line.substr(2));
glm::vec3 v; s >> v.x; s >> v.y; s >> v.z;
vertices.push_back(v);
} else if (line.substr(0,2) == "f ") {
std::istringstream s(line.substr(2));
GLushort a,b,c;
s >> a; s >> b; s >> c;
a--; b--; c--;
elements.push_back(a); elements.push_back(b); elements.push_back(c);
} else if (line[0] == '#') { }
else {}
}
normals.resize(vertices.size(), glm::vec3(0.0, 0.0, 0.0));
for (int i = 0; i < elements.size(); i += 3) {
GLushort ia = elements[i];
GLushort ib = elements[i+1];
GLushort ic = elements[i+2];
glm::vec3 normal = glm::normalize(glm::cross(
glm::vec3(vertices[ib]) - glm::vec3(vertices[ia]),
glm::vec3(vertices[ic]) - glm::vec3(vertices[ia])));
normals[ia] = normals[ib] = normals[ic] = normal;
}
logger << LOGGER_INFO << "Loaded OBJ: " << file << LOGGER_ENDL;
}
void FlatShade(std::vector<glm::vec3>& vertices, std::vector<glm::vec3>& normals, std::vector<GLushort>& elements) {
std::vector<glm::vec3> shared_vertices;
for (int i = 0; i < elements.size(); i++) {
vertices.push_back(shared_vertices[elements[i]]);
if ((i % 3) == 2) {
GLushort ia = elements[i-2];
GLushort ib = elements[i-1];
GLushort ic = elements[i];
glm::vec3 normal = glm::normalize(glm::cross(
shared_vertices[ic] - shared_vertices[ia],
shared_vertices[ib] - shared_vertices[ia]));
for (int n = 0; n < 3; n++)
normals.push_back(normal);
}
}
}
#include "object.h"
#include <fstream>
// https://en.wikibooks.org/wiki/OpenGL_Programming/Modern_OpenGL_Tutorial_Load_OBJ
void LoadOBJ(Logger& logger, std::string file, std::vector<glm::vec3>& vertices, std::vector<glm::vec3>& normals, std::vector<GLushort>& elements) {
std::ifstream in(file, std::ios::in);
if (!in) {
logger << LOGGER_ERROR << "Cannot open " << file << LOGGER_ENDL;
return;
}
std::string line;
while (getline(in, line)) {
if (line.substr(0,2) == "v ") {
std::istringstream s(line.substr(2));
glm::vec3 v; s >> v.x; s >> v.y; s >> v.z;
vertices.push_back(v);
} else if (line.substr(0,2) == "f ") {
std::istringstream s(line.substr(2));
GLushort a,b,c;
s >> a; s >> b; s >> c;
a--; b--; c--;
elements.push_back(a); elements.push_back(b); elements.push_back(c);
} else if (line[0] == '#') { }
else {}
}
normals.resize(vertices.size(), glm::vec3(0.0, 0.0, 0.0));
for (int i = 0; i < elements.size(); i += 3) {
GLushort ia = elements[i];
GLushort ib = elements[i+1];
GLushort ic = elements[i+2];
glm::vec3 normal = glm::normalize(glm::cross(
glm::vec3(vertices[ib]) - glm::vec3(vertices[ia]),
glm::vec3(vertices[ic]) - glm::vec3(vertices[ia])));
normals[ia] = normals[ib] = normals[ic] = normal;
}
logger << LOGGER_INFO << "Loaded OBJ: " << file << LOGGER_ENDL;
}
void FlatShade(std::vector<glm::vec3>& vertices, std::vector<glm::vec3>& normals, std::vector<GLushort>& elements) {
std::vector<glm::vec3> shared_vertices;
for (int i = 0; i < elements.size(); i++) {
vertices.push_back(shared_vertices[elements[i]]);
if ((i % 3) == 2) {
GLushort ia = elements[i-2];
GLushort ib = elements[i-1];
GLushort ic = elements[i];
glm::vec3 normal = glm::normalize(glm::cross(
shared_vertices[ic] - shared_vertices[ia],
shared_vertices[ib] - shared_vertices[ia]));
for (int n = 0; n < 3; n++)
normals.push_back(normal);
}
}
}