21CSL66 Program 6

#include <GL/glut.h>

float trianglePosX = -0.5f; // Initial position of the triangle
float triangleSpeed = 0.005f; // Speed of the triangle

void display()
{
    glClear(GL_COLOR_BUFFER_BIT);
    glLoadIdentity();

    // Draw the triangle
    glBegin(GL_TRIANGLES);
    glColor3f(1.0f, 0.0f, 0.0f);   // Red color
    glVertex2f(trianglePosX, 0.0f);
    glVertex2f(trianglePosX + 0.1f, 0.2f);
    glVertex2f(trianglePosX + 0.2f, 0.0f);
    glEnd();

    glutSwapBuffers();
}

void update(int value)
{
    // Update the position of the triangle
    trianglePosX += triangleSpeed;

    // If the triangle goes beyond the right edge of the window, reset its position
    if (trianglePosX > 1.1f)
        trianglePosX = -0.5f;

    // Redisplay the scene
    glutPostRedisplay();

    // Call update() again after 16 milliseconds
    glutTimerFunc(16, update, 0);
}

void init()
{
    glClearColor(1.0f, 1.0f, 1.0f, 1.0f); // White background color
}

int main(int argc, char** argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
    glutInitWindowSize(800, 600); // Window size
    glutCreateWindow("vtucode | OpenGL Animation");

    init();

    glutDisplayFunc(display);
    glutTimerFunc(16, update, 0); // Call update() after 16 milliseconds

    glutMainLoop();
    return 0;
}

braham@braham:~/Desktop/program$ g++ program6.cpp -lGL -lGLU -lglut -o program6
braham@braham:~/Desktop/program$ ./program6