public void glInit(GeometryViewer viewer, GL gl, GLU glu) {
surface = getNewSurface();
float mat_diffuse[] = {0.7f, 0.7f, 0.7f, 1.0f};
float mat_specular[] = {1.0f, 1.0f, 1.0f, 1.0f};
float mat_shininess[] = {100.0f};
gl.material(FRONT, DIFFUSE, mat_diffuse);
gl.material(FRONT, SPECULAR, mat_specular);
gl.material(FRONT, SHININESS, mat_shininess);
gl.enable(LIGHTING);
gl.enable(LIGHT0);
gl.enable(DEPTH_TEST);
gl.enable(AUTO_NORMAL);
gl.enable(NORMALIZE);
initSurface();
surface.nurbsProperty(GLU_SAMPLING_TOLERANCE, 25.0f);
surface.nurbsProperty(GLU_DISPLAY_MODE, GLU_FILL);
}
public void paint(GeometryViewer viewer, GL gl, GLU glu) {
float knots[] = {0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f};
float flatControlPoints[];
int i, j, k, flatCounter = 0;
flatControlPoints = new float[4 * 4 * 3];
for (i = 0; i < 4; i++)
for (j = 0; j < 4; j++)
for (k = 0; k < 3; k++) flatControlPoints[flatCounter++] = controlPoints[i][j][k];
gl.pushMatrix();
gl.rotate(330.0f, 1.f, 0.f, 0.f);
gl.scale(0.5f, 0.5f, -0.5f);
surface.beginSurface();
surface.nurbsSurface(knots, knots, 4 * 3, 3, flatControlPoints, 4, 4, MAP2_VERTEX_3);
surface.endSurface();
if (showPoints == true) {
gl.pointSize(5.0f);
gl.disable(LIGHTING);
gl.color(1.0f, 1.0f, 0.0f);
gl.begin(POINTS);
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
gl.vertex(controlPoints[i][j][0], controlPoints[i][j][1], controlPoints[i][j][2]);
}
}
gl.end();
gl.enable(LIGHTING);
}
gl.popMatrix();
}