Do you know what effects there are if the ANS is being brought backwards and PNS down (ccw rotation around incicors)
And also how would someone achieve CCW rotation around incicors in contrast to ccw around ans
Yes, of course I do and so does my 3rd grader who can not only read what the diagram says but also knows how to rotate a simple triangle and observe where the lines and vertexes of the triangle displace as a function of the direction of rotation and the PIVOT POINT of the rotation. The main effect is that the chin point is going to displace 'forward'. As to the incisor point being the selected pivot point, the concept is similar to selecting ANY point on a triangle as the pivot point. The pivot point, ANY pivot point is the point selected where you DON'T want IT to move but you want all other points found on the triangle to move around it. So, if the incisor point is selected as the pivot point, when the triangle is rotated CCW, all the points of the triangle will displace EXCEPT the incisor point. The chin point will displace forward.
Here's what else I know:
Both CW and CCW are based on the fundamental geometric concept of the rotation of a TRIANGLE around selected rotation/PIVOT points. I would say the concept is elementary and at grammar school level. That is to say, it FIRST needs to become SELF EVIDENT (via observation) as to where the vertexes of a TRIANGLE go when the TRIANGLE is ROTATED around a FIXED PIVOT POINT. WHY? Because if someone can't observe where the points along a TRIANGLE go/displace when the triangle is PIVOTED around a selected point, they won't be able to RELATE the triangle of the FACE (as seen in the diagram) back to a simple geometric concept.
Your questions belie you are unable to conceptualize very basic geometrical relationships. I'll give you a grammar school exercise that could help with the basic concept behind the ROTATION of a TRIANGLE. That's because there is no point in my answering questions about what the 'effects' are of ROTATING a facial TRIANGLE in the event the person asking wouldn't/couldn't be able to rotate a simple geometric figure (a triangle) and OBSERVE how the triangle displaces.
Here's a simple (grammar school level) exercise you can do:
Supplies needed: 2 pieces of cardboard, 1 piece of paper, 2 colored pencils and one push pin.
Construct a TRIANGLE from a piece of cardboard somewhat similar to the one in the diagram. Place a piece of cardboard on the table and a piece of paper on top of that. LABEL the VERTEXES of your triangle; A,B and C. In other words, let vertex A = vertex ANS, vertex B=PNS and vertex C= the chin point. Now PIN the triangle down at PIVOT POINT A shown in the diagram here as the ANS point and orient it like it's oriented in the diagram. TRACE your triangle in one COLOR where it is initially oriented. ROTATE it CCW around the pivot point A and make sure the pivot point does not move. Now TRACE the triangle in a DIFFERENT color. Remove the cardboard triangle and observe how the triangle displaces by looking at the piece of paper with the tracings in 2 different colors. Label the original orientation of the VERTEXES of the triangle; A B and C. Now label where those SAME vertexes go after the rotation. Label them A',B' and C'.
Basically, all you have to do is OBSERVE where all the parts of the TRIANGLE go/displace that are NOT pinned down. The most OBVIOUS thing to see is that when the pivot point is CCW around vertex A, vertex C which moves to C' is displaced 'forward' also that vertex B is displaced downward to B'.
Since A=ANS, B=PNS and C=chin point, this simple exercise should help make it INTUITIVELY OBVIOUS that the chin point goes 'forward' with a CCW-r around the ANS point.
You can do the SAME exercise with the SAME triangle by pinning it down at a point similar to the incisor point which in the diagram is about half way along line AC of the triangle. Likewise, you can do same exercise by rotating in CW around either point.
So, the only way to CONCEPTUALIZE where areas on the face would/could displace is to acquire the ability to observe how a TRIANGLE displaces, particularly one that is constructed similar to one with VERTEXES; ANS, PNS and the chin point.
