doodle

Hi,

this is a c++ doodle - beginning to learn how to read and write from a text file in c++. i think that will be helpful in learning c++ and using Blender to visualize the results.

#include <iostream>

//for writing to file
#include <fstream>
#include <iostream>
//for reading file
#include <sstream>

int main()
{
	std::cout<<"topics hurraay"<<std::endl;
	
	/*
	//writing to a text file
	std::string vstr = "great wrote some text info\n";
	
	std::ofstream ofile("verts.txt");
	ofile << vstr;
	ofile.close();
	//https://stackoverflow.com/questions/15388041/how-to-write-stdstring-to-file
	*/
	
	//reading from a text file
	//ex 1
	/*
	std::string ivstr;
	std::ifstream ifile("verts.txt");
	std::getline(ifile, ivstr);
	std::cout<<ivstr<<std::endl;
	*/
	
	//ex 2
	std::string ivstr;
	std::ifstream ifile("verts_dat.txt");
	/*format of text file:
	//x,y,z
	10 20 30
	5 10 15
	25 32 10
	*/
	//skip first line
	std::getline(ifile, ivstr);
	
	double x,y,z;
	//go through each line of text file
	while(std::getline(ifile, ivstr))
	{
		std::istringstream iss(ivstr);
		//save into variables
		iss >> x >> y >> z;
		
		std::cout<<"x,y,z:"<<x<<" "<<y<<" "<<z<<std::endl;
	}
	/*result
	x,y,z:10 20 30
	x,y,z:5 10 15
	x,y,z:25 32 100
	*/
	//https://stackoverflow.com/questions/51007121/read-a-text-file-c
	
	
	return 0;
}

//g++ -o prog topicsA.cpp
//./prog

and these are some exercises i made to help with learning c++.

//todo: class that reads and writes x,y,z points - reading just prints out what was read
//todo: vector of structs - each struct a vertex (output vertex points from a cube in blender in python - input vertices in c++)
//todo: class that reads and writes x,y,z points - reading saves points in structs
//todo: translate x all vertices in c++ - output to text file in c++ - read the new point position in blender python 

//todo: class reads/writes animation keyframes - for simplicity //f,v  - a frame and a value
//todo: smooth keyframes - example for every frame its value is its before/cur/after values averaged

Happy Sketching!