public void displayByArea(DisplayArea area) {
changeMode();
position.add(direction);
if (position.z > 300 || position.z < -300) { // ograniczenie poruszania się obszaru wyświetlania
direction.mult(-1);
}
area.moveCenterTo(position);
pApplet.stroke(255, 0, 0);
pApplet.pushMatrix();
for (int j = 0; j < model.getSegmentCount(); j++) {
Segment segment = model.getSegment(j);
Face[] faces = segment.getFaces();
pApplet.beginShape(PConstants.QUADS);
for (Face face : faces) {
if (area.isColliding(face.getCenter())) {
PVector[] v = face.getVertices();
PVector[] n = face.getNormals();
for (int k = 0; k < v.length; k++) {
pApplet.normal(n[k].x, n[k].y, n[k].z);
pApplet.vertex(v[k].x, v[k].y, v[k].z);
}
}
}
pApplet.endShape();
}
pApplet.popMatrix();
}
public void moveNormals() {
changeMode();
pApplet.pushMatrix();
for (int j = 0; j < model.getSegmentCount(); j++) {
Segment segment = model.getSegment(j);
Face[] faces = segment.getFaces();
pApplet.beginShape(PConstants.QUADS);
for (int i = 0; i < faces.length; i++) {
PVector[] vertices = faces[i].getVertices();
PVector normal = faces[i].getNormal();
float nor = PApplet.abs(PApplet.sin(PApplet.radians((pApplet.frameCount + i))) * 100);
for (PVector vertex : vertices) {
pApplet.vertex(
vertex.x + (normal.x * nor),
vertex.y + (normal.y * nor),
vertex.z + (normal.z * nor));
}
}
pApplet.endShape();
}
pApplet.popMatrix();
}