Topics

1

Graphics / sf::VertexArray change color

« on: July 23, 2016, 03:19:31 pm »

/.../
std::list<sf::VertexArray*>   path_to_stars;
std::list<sf::VertexArray*>::iterator   it_path;

/.../

path_to_stars.push_back(new sf::VertexArray(sf::Lines, 2));

path_to_stars.back()->append(sf::Vector2f((*it)->star.getPosition()));
path_to_stars.back()->append(sf::Vector2f((*it2)->star.getPosition()));
path_to_stars.back()[1]->color(sf::Color(255, 255, 255, 255)) //wrong
path_to_stars.back()->color(sf::Color(255, 255, 255, 255)) //wrong
 

I know only how to change the color of the line by points, but hove i can change color in this situation?

2

General / Need help to connect OpenGl project with SFML

« on: April 07, 2016, 09:48:17 pm »

I have OpenGl project, but I can't connect it to sfml in any way, could someone help me to connect them?

#include <SFML/OpenGL.hpp>
#include <glut.h>

#include <cmath>

float f(float x, float y)
{
        return sin(x*y*0.0001)*100;
}

void display()
{
        glClear(GL_COLOR_BUFFER_BIT);
        for (float x = -480; x < 480; x += 10)
        {
                glBegin(GL_LINE_STRIP);
                for (float y = -480; y < 480; y += 10)
                        glVertex3f(x, y, f(x, y));
                glEnd();
        }
        for (float y = -480; y < 480; y += 10)
        {
                glBegin(GL_LINE_STRIP);
                for (float x = -480; x < 480; x += 10)
                        glVertex3f(x, y, f(x, y));
                glEnd();
        }
        glutSwapBuffers();
}

void timer(int = 0)
{
        display();
        glutTimerFunc(10, timer, 0);
}

int main(int argc, char **argv)
{
        glutInit(&argc, argv);
        glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
        glutInitWindowSize(480, 480);
        glutInitWindowPosition(20, 86);
        glutCreateWindow("3d plot");
        glClearColor(0, 0, 0, 1.0);

        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        glFrustum(-100, 100, -100, 100, 100, 2000);
        glMatrixMode(GL_MODELVIEW);
        glTranslatef(0, 0, -800);
        glRotatef(-30, 1, 0, 0);
        glutDisplayFunc(display);
        timer();
        glutMainLoop();
}

#include <SFML/Graphics.hpp>
 
int main()
{
        sf::RenderWindow window(sf::VideoMode(800, 600), "sdfs");
 
        while (window.isOpen())
        {
                sf::Event event;
                while (window.pollEvent(event))
                {
                        if (event.type == sf::Event::Closed)
                                window.close();
                }
 
                window.clear();

                window.display();
        }
 
        return 0;
}

I try to do this but only get errors such as screenshot in attachment. The project without sfml is completely working.
Sorry for my bad English