glLoadIdentity();

	glDisable(GL_LIGHTING);

	glPointSize(0.5);
	glLineWidth(0.5);

	glRotatef(xRot, 1.0f, 0.0f, 0.0f);
	glRotatef(yRot, 0.0f, 1.0f, 0.0f);

	static const int size = 150;
	static const int step = 50;

	glColor4f(1, 0, 0, 0.2);

	for (int x = -size; x <= size; x += step) {
		for (int y = -size; y <= size; y += step) {
			glBegin(GL_LINES);
			glVertex3f(x, y, -size);
			glVertex3f(x, y, size);
			glEnd();
		}
	}

	glColor4f(0, 1, 0, 0.2);

	for (int z = -size; z <= size; z += step) {
		for (int y = -size; y <= size; y += step) {
			glBegin(GL_LINES);
			glVertex3f(-size, y, z);
			glVertex3f(size, y, z);
			glEnd();
		}
	}

	glColor4f(0, 0, 1, 0.2);

	for (int x = -size; x <= size; x += step) {
		for (int z = -size; z <= size; z += step) {
			glBegin(GL_LINES);
			glVertex3f(x, -size, z);
			glVertex3f(x, size, z);
			glEnd();
		}
	}

	float x = 0;
	float y = 10;
	float z = 60;

	glBegin(GL_LINES);
	glColor3f(1, 0, 0);
	glVertex3f(0, 0, 0);
	glVertex3f(x, y, z);
	glEnd();

	glEnable(GL_LIGHTING);