cube

Angol

Főnév

cube (tsz. cubes)

1. (matematika) kocka

---

#include <GL/glut.h>
#include <cmath>
#include <cstdlib>
#include <ctime>

float angle = 0.0f; // Rotation angle
int pivotIndex = 0; // Current pivot index
float pivotAxis[6][3] = {
    {1.0f, 1.0f, 1.0f},  // Rotate around diagonal
    {1.0f, 0.0f, 0.0f},  // Rotate around X-axis
    {0.0f, 1.0f, 0.0f},  // Rotate around Y-axis
    {0.0f, 0.0f, 1.0f},  // Rotate around Z-axis
    {1.0f, -1.0f, 0.0f}, // Rotate around an inclined axis
    {-1.0f, 1.0f, 1.0f}  // Rotate around another diagonal
};

void drawCube() {
    glBegin(GL_QUADS);

    // Front Face
    glColor3f(1.0f, 0.0f, 0.0f); // Red
    glVertex3f(-0.5f, -0.5f,  0.5f);
    glVertex3f( 0.5f, -0.5f,  0.5f);
    glVertex3f( 0.5f,  0.5f,  0.5f);
    glVertex3f(-0.5f,  0.5f,  0.5f);

    // Back Face
    glColor3f(0.0f, 1.0f, 0.0f); // Green
    glVertex3f(-0.5f, -0.5f, -0.5f);
    glVertex3f(-0.5f,  0.5f, -0.5f);
    glVertex3f( 0.5f,  0.5f, -0.5f);
    glVertex3f( 0.5f, -0.5f, -0.5f);

    // Top Face
    glColor3f(0.0f, 0.0f, 1.0f); // Blue
    glVertex3f(-0.5f,  0.5f, -0.5f);
    glVertex3f(-0.5f,  0.5f,  0.5f);
    glVertex3f( 0.5f,  0.5f,  0.5f);
    glVertex3f( 0.5f,  0.5f, -0.5f);

    // Bottom Face
    glColor3f(1.0f, 1.0f, 0.0f); // Yellow
    glVertex3f(-0.5f, -0.5f, -0.5f);
    glVertex3f( 0.5f, -0.5f, -0.5f);
    glVertex3f( 0.5f, -0.5f,  0.5f);
    glVertex3f(-0.5f, -0.5f,  0.5f);

    // Right Face
    glColor3f(1.0f, 0.0f, 1.0f); // Magenta
    glVertex3f( 0.5f, -0.5f, -0.5f);
    glVertex3f( 0.5f,  0.5f, -0.5f);
    glVertex3f( 0.5f,  0.5f,  0.5f);
    glVertex3f( 0.5f, -0.5f,  0.5f);

    // Left Face
    glColor3f(0.0f, 1.0f, 1.0f); // Cyan
    glVertex3f(-0.5f, -0.5f, -0.5f);
    glVertex3f(-0.5f, -0.5f,  0.5f);
    glVertex3f(-0.5f,  0.5f,  0.5f);
    glVertex3f(-0.5f,  0.5f, -0.5f);

    glEnd();
}

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

    glTranslatef(0.0f, 0.0f, -3.0f); // Move the cube back
    glRotatef(angle, pivotAxis[pivotIndex][0], pivotAxis[pivotIndex][1], pivotAxis[pivotIndex][2]); // Rotate cube

    drawCube();

    glutSwapBuffers();
}

void update(int value) {
    angle += 2.0f; // Increase rotation angle
    if (angle > 360.0f) {
        angle -= 360.0f;
    }

    glutPostRedisplay(); // Request display update
    glutTimerFunc(16, update, 0); // Call update every ~16ms (~60 FPS)
}

void switchPivot(int value) {
    pivotIndex = (pivotIndex + 1) % 6; // Cycle through the pivot points
    glutTimerFunc(2000, switchPivot, 0); // Change pivot every 2 seconds
}

void initGL() {
    glEnable(GL_DEPTH_TEST); // Enable depth testing
    glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Black background
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(45.0, 1.0, 1.0, 10.0); // Set perspective projection
    glMatrixMode(GL_MODELVIEW);
}

int main(int argc, char** argv) {
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
    glutInitWindowSize(600, 600);
    glutCreateWindow("3D Rotating Cube with Changing Pivot");

    initGL();

    glutDisplayFunc(display);
    glutTimerFunc(16, update, 0); // Start animation loop
    glutTimerFunc(2000, switchPivot, 0); // Start pivot change loop

    glutMainLoop();
    return 0;
}

További információk

• cube - Szótár.net (en-hu)
• cube - Sztaki (en-hu)
• cube - Merriam–Webster
• cube - Cambridge
• cube - WordNet
• cube - Яндекс (en-ru)
• cube - Google (en-hu)
• cube - Wikidata
• cube - Wikipédia (angol)

Francia

Kiejtés

• IPA: /kyb/

Főnév

cube hn (plural cubes)

1. (matematika) kocka

További információk

• cube - Szótár.net (fr-hu)
• cube - Reverso (fr-en)
• cube - Robert
• cube - Larousse
• cube - TLFI
• cube - Google (fr-en)
• cube - Яндекс (fr-ru)
• cube - Wikidata
• cube - Wikipédia (francia)