Messages

1

General / Re: Changing the name variable in a loop for

« on: February 13, 2023, 10:24:48 am »

Thank you but unfortunately this doesn't work, I have an error "Failed to save image " " " and I don't know how to fix it.. I saw on internet that this can come from a special letter in the file acces but this is not my case

Here is my code :

...

while (window.isOpen()){
        sf::Event event;
        while (window.pollEvent(event))
            if (event.type == sf::Event::Closed) window.close();

       
        int i=0;
        for (auto& chart : charts){
            window.clear(sf::Color::White);
            sf::Texture text;
            window.draw(chart);
            text.update(window);
            sf::Image Screen;
            Screen = text.copyToImage();
            Screen.saveToFile("screen_" + to_string(i) + ".jpg");
            i++;
        }
        window.display();
    }
...

2

General / Re: Changing the name variable in a loop for

« on: February 12, 2023, 12:00:37 pm »

Thank you very much it works ! <3 And since you seem to know a lot about sfml would you happen to know how to save the window in a jpg file ?

3

General / Re: Changing the name variable in a loop for

« on: February 12, 2023, 12:10:36 am »

Thanks both of you for your fast responses ! It work but unfortunately there is a little probleme at the end of the plot, as you can see. Do you have any idea how to fix it ?

4

General / Re: Changing the name variable in a loop for

« on: February 11, 2023, 11:28:33 pm »

I would like to know if there's a way to avoid the 15 repetitions of sf::vertexarray

5

General / Changing the name variable in a loop for

« on: February 11, 2023, 11:26:13 pm »

Hello, I'm tryng to draw multiple graph with SFML on a single window and for that I need to change the name of a vertexarray variable inside my loop for, unfortunately I don't know how to do it, anyone can help me ?
Thanks !

#include <SFML/Graphics.hpp>
#include <iostream>
#include <sstream>
#include <cmath>
#include<fstream>

using namespace std;

double dt=1;//sec
double dx=0.1;//m
int tmax = 30 ;
int xmax = 40 ;


int main()
{
    fstream fich; //file with stuff to plot
    fich.open("results.txt", ios::in);
    const unsigned int s = 800;
    const unsigned int N = 1500;

    sf::RenderWindow window(sf::VideoMode(N, s),"Graph", sf::Style::Default);
    window.setVerticalSyncEnabled(true);
    window.setFramerateLimit(60);

       
        sf::VertexArray chart1(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart1.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart2(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart2.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart3(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart3.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart4(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart4.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart5(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart5.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart6(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart6.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart7(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart7.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart8(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart8.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart9(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart9.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart10(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart10.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart11(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart11.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart12(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart12.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart13(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart13.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart14(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart14.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }
        sf::VertexArray chart15(sf::LinesStrip, N);
        for (unsigned int i=0; i<400; i++){
            double x1, U1, x2, U2, Utot, t;
            fich>>x1>> U1>> x2>> U2>> Utot>> t;
            double abscisse = x1*N/xmax;
            double ordonne = s-Utot*s/2;
            chart15.append(sf::Vertex(sf::Vector2f(abscisse, ordonne), sf::Color::Black));
        }


   
    fich.close();
    while (window.isOpen()){
        sf::Event event;
        while (window.pollEvent(event))
            if (event.type == sf::Event::Closed) window.close();

        window.clear(sf::Color::White);
        window.draw(chart1);
        window.draw(chart2);
        window.draw(chart3);
        window.draw(chart4);
        window.draw(chart5);
        window.draw(chart6);
        window.draw(chart7);
        window.draw(chart8);
        window.draw(chart9);
        window.draw(chart10);
        window.draw(chart11);
        window.draw(chart12);
        window.draw(chart13);
        window.draw(chart14);
        window.draw(chart15);

        window.display();
    }
    return 0;
}