我刚刚打开filename.file,将每个浮点数保存在矢量“顶点”中,但将它们另存为整数数。需要将所有数字正确转换为浮点数。例如:从“ 1”到“ 1.00000f”,或者从“ 1”到“ 1.0f”。
/////filename.file
...
v 1.000000 1.000000 -1.000000
v 1.000000 -1.000000 -1.000000
v 1.000000 1.000000 1.000000
v 1.000000 -1.000000 1.000000
v -1.000000 1.000000 -1.000000
v -1.000000 -1.000000 -1.000000
v -1.000000 1.000000 1.000000
...
//////
std::vector<float> vertices;
std::ifstream file(filename);
std::string line;
while (std::getline(file, line))
{
std::istringstream iss(line);
std::string result;
if (std::getline(iss, result, ' '))
{
if (result == "v")
{
while (std::getline(iss, token, ' '))
{
std::istringstream iss1(token);
if (std::getline(iss1, word))
{
float word_float = std::stof(word);
//std::cout << word_float << std::endl;
vertices.push_back(word_float);
}
}
}
}
}
//Look what I got
for(std::size_t i = 0 ; i < vertices.size(); i++) {
std::cout << vertices[i] << " ";
}
/ *每个元素1个-11个...
//但是这些数字应该完全这样保存
1.000000f-1.000000f1.000000f...* /
听起来你想要一些东西,顺序是:
std::cout << std::fixed << std::setprecision(5) << value << "f";
例如:
float values[] = { 1.0f, -1.0f, 1.0f };
for (auto const &value : values)
std::cout << std::fixed << std::setprecision(5) << value << "f\t";
结果:
1.00000f -1.00000f 1.00000f