draw_box_pyramid.cpp

void draw_box(const glm::vec3 &scale, const glm::vec3 &color) {
    glColor3f(color[0], color[1], color[2]);
    glLineWidth(2.0);

    glBegin(GL_QUAD_STRIP);
    glNormal3f(0, 0, 1); // Face Z
    glVertex3f(-scale[0], -scale[1], scale[2]);
    glVertex3f(scale[0], -scale[1], scale[2]);
    glVertex3f(-scale[0], scale[1], scale[2]);
    glVertex3f(scale[0], scale[1], scale[2]);

    glNormal3f(0, 1, 0); // Face Y
    glVertex3f(-scale[0], scale[1], -scale[2]);
    glVertex3f(scale[0], scale[1], -scale[2]);

    glNormal3f(0, 0, -1); // Face -Z
    glVertex3f(-scale[0], -scale[1], -scale[2]);
    glVertex3f(scale[0], -scale[1], -scale[2]);

    glNormal3f(0, -1, 0); // Face -Y
    glVertex3f(-scale[0], -scale[1], scale[2]);
    glVertex3f(scale[0], -scale[1], scale[2]);
    glEnd();

    glBegin(GL_QUADS);
    glNormal3f(1, 0, 0); // Face X
    glVertex3f(scale[0], scale[1], scale[2]);
    glVertex3f(scale[0], -scale[1], scale[2]);
    glVertex3f(scale[0], -scale[1], -scale[2]);
    glVertex3f(scale[0], scale[1], -scale[2]);
    glEnd();

    glBegin(GL_QUADS);
    glNormal3f(-1, 0, 0); // Face -X
    glVertex3f(-scale[0], scale[1], scale[2]);
    glVertex3f(-scale[0], -scale[1], scale[2]);
    glVertex3f(-scale[0], -scale[1], -scale[2]);
    glVertex3f(-scale[0], scale[1], -scale[2]);
    glEnd();
}

void draw_pyramid(const glm::vec3 &scale, const glm::vec3 &color) {
    glColor3f(color[0], color[1], color[2]);

    glBegin(GL_TRIANGLE_FAN);
    glVertex3f(scale[0], 0, 0); // Central Vertex

    glNormal3f(1, 1, 1);
    glVertex3f(0, 0, scale[2]);
    glVertex3f(0, scale[1], 0);

    glNormal3f(1, 1, -1);
    glVertex3f(0, 0, -scale[2]);

    glNormal3f(1, -1, -1);
    glVertex3f(0, -scale[1], 0);

    glNormal3f(1, -1, 1);
    glVertex3f(0, 0, scale[2]);
    glEnd();
}