How can i clip this sphere? please help >.<

OpenGL OpenGL: Basic Coding
1

hey, so im trying to do a smiley face and the i want to cut the upper half of the sphere for the mouth

this is my code

#include <windows.h>
#include <glut.h>
#include <math.h>

void display(void)
{
		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glPushMatrix();
	glColor3f(1.0, 1.0, 0.0);
	glutSolidSphere(75, 75, 75);
	glFlush();


	glPushMatrix();
	glColor3f(0.0, 0.0, 0.0);
	glTranslated(30, 20, 0);
	glutSolidSphere(11, 11, 11); //right eye
	glFlush();

	glRotatef(180, 0, 1, 1);

	glPushMatrix();
	glColor3f(0.0, 0.0, 0.0);
	glTranslated(55, 20, 0);
	glutSolidSphere(11, 11, 11); //left eye
	glFlush();

	glBegin(GL_LINES);
	glVertex2i(70, 40);
	glVertex2i(80, -40); //nose
	glEnd();

	GLdouble enq[4] = { 0.0,0.0,-1.0,0.0 };
	glClipPlane(GL_CLIP_PLANE0, enq);
	glEnable(GL_CLIP_PLANE0);
	glPushMatrix();
	glColor3f(1.0, 0.0, 0.0);
	glTranslated(-26, 10, -50);
	glutSolidSphere(20, 20, 10);
	glFlush();

}

the problem I’m having is that idk what to put here >> GLdouble enq[4] = { 0.0,0.0,-1.0,0.0 }; <<
please help me :frowning:
it works with me when i do this >> glTranslated(-26, 10, -0.5); << but i dont want these coordinates