/** * neufpts.java - jpq - 22/01/99 * 21/03/99 - jdk1.2 - double-buffering * modification et ajout de main() le 26/12/17 ; modification le 05, le 09, le 22/09/22 */ import java.awt.event.*; import java.awt.*; import javax.swing.*; import geo.*; public class neufpts extends JFrame implements MouseListener, MouseMotionListener { static final long serialVersionUID = 220922L; static Image img; static Graphics g; static Repere Rep; int gw, gh; static PointLibre A, B, C; static Segment AB, BC, CA, UO, VO, WO, AP, BQ, CR, AH, BH, CH, OH, AJ, BJ, CJ, Jab, Jbc, Jca; static Pt U, V, W, O, P, Q, R, H, L, M, N, G, I, J, K, Ja, Jb, Jc, Ka, Kb, Kc; static Droite dUO, dVO, dAP, dBQ, dbA, dbB, dbeA, dbeB, dbeC; static Cercle C9pts, Ci, Cea, Ceb, Cec; public neufpts() { super ("Le cercle des neuf points"); addMouseMotionListener (this); addMouseListener (this); setBackground (Color.WHITE); setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE); setSize (600, 600); setVisible (true); } public void update (Graphics g1) { paint (g1); } public void paint (Graphics g1) { if (img == null || gw != getSize().width || gh != getSize().height) { gw = getSize().width; gh = getSize().height; img = createImage (gw, gh); g = img.getGraphics (); g.setFont (new Font ("Arial", Font.PLAIN, 14)); if (Rep == null) { Rep = new Repere (gw / 2, gh / 2, gw, gh, 20.0, 20.0); A = new PointLibre (0.0, 6.0); B = new PointLibre (-6.0, 0.0); C = new PointLibre (7.0, -5.0); AB = new Segment(); BC = new Segment(); CA = new Segment(); /* U = new Pt(); V = new Pt(); W = new Pt(); dUO = new Droite(); dVO = new Droite(); */ O = new Pt(); UO = new Segment(); VO = new Segment(); WO = new Segment(); /* dAP = new Droite(); dBQ = new Droite(); H = new Pt(); P = new Pt(); Q = new Pt(); R = new Pt(); */ AP = new Segment(); BQ = new Segment(); CR = new Segment(); AH = new Segment(); BH = new Segment(); CH = new Segment(); /* L = new Pt(); M = new Pt(); N = new Pt(); G = new Pt(); I = new Pt(); */ OH = new Segment(); C9pts = new Cercle(); dbA = new Droite(); dbB = new Droite(); /* J = new Pt(); K = new Pt(); */ AJ = new Segment(); BJ = new Segment(); CJ = new Segment(); Ci = new Cercle(); dbeA = new Droite(); dbeB = new Droite(); dbeC = new Droite(); /* Ja = new Pt(); Jb = new Pt(); Jc = new Pt(); Ka = new Pt(); Kb = new Pt(); Kc = new Pt(); */ Jab = new Segment(); Jbc = new Segment(); Jca = new Segment(); Cea = new Cercle(); Ceb = new Cercle(); Cec = new Cercle(); } else { Rep.MAJ (gw / 2, gh / 2, gw, gh, 20.0, 20.0); } } g.setColor (getBackground ()); g.fillRect (0, 0, Rep.XMAX, Rep.YMAX); AB.MAJ (A, B); BC.MAJ (B, C); CA.MAJ (C, A); U = Pt.milieu (B, C); V = Pt.milieu (C, A); W = Pt.milieu (A, B); dUO = Droite.mediatrice (B, C); dVO = Droite.mediatrice (C, A); O = Pt.intersection (dUO, dVO); UO.MAJ (U, O); VO.MAJ (V, O); WO.MAJ (W, O); dAP = Droite.perpendiculaire (BC, A); dBQ = Droite.perpendiculaire (CA, B); H = Pt.intersection (dAP, dBQ); P = A.projection (BC); Q = B.projection (CA); R = C.projection (AB); AP.MAJ (A, P); BQ.MAJ (B, Q); CR.MAJ (C, R); AH.MAJ (A, H); BH.MAJ (B, H); CH.MAJ (C, H); L = Pt.milieu (A, H); M = Pt.milieu (B, H); N = Pt.milieu (C, H); OH.MAJ (O, H); I = Pt.milieu (O, H); G = O.homothetie (H, 2.0 / 3.0); C9pts.MAJ (I, U); dbA = Droite.bissectrice (B, A, C); dbB = Droite.bissectrice (C, B, A); J = Pt.intersection (dbA, dbB); AJ.MAJ (A, J); BJ.MAJ (B, J); CJ.MAJ (C, J); K = J.projection (AB); Ci.MAJ (J, K); dbeA = dbA.perpendiculaire (A); dbeB = dbB.perpendiculaire (B); dbeC = CJ.perpendiculaire (C); Ja = Pt.intersection (dbeB, dbeC); Jb = Pt.intersection (dbeC, dbeA); Jc = Pt.intersection (dbeA, dbeB); Jab.MAJ (Ja, Jb); Jbc.MAJ (Jb, Jc); Jca.MAJ (Jc, Ja); Ka = Ja.projection (BC); Kb = Jb.projection (CA); Kc = Jc.projection (AB); Cea.MAJ (Ja, Ka); Ceb.MAJ (Jb, Kb); Cec.MAJ (Jc, Kc); // on trace g.setColor (Color.BLACK); Rep.cadre (g); OH.trace ("", Rep, g); G.trace ("G", Rep, g); I.trace ("I", Rep, g); g.setColor (Color.YELLOW); AJ.trace ("", Rep, g); BJ.trace ("", Rep, g); CJ.trace ("", Rep, g); Ci.trace ("", Rep, g); Jab.trace ("", Rep, g); Jbc.trace ("", Rep, g); Jca.trace ("", Rep, g); Cea.trace ("", Rep, g); Ceb.trace ("", Rep, g); Cec.trace ("", Rep, g); g.setColor (Color.BLUE); AB.trace ("", Rep, g); BC.trace ("", Rep, g); CA.trace ("", Rep, g); g.setColor (Color.GREEN); O.trace ("O", Rep, g); UO.trace ("", Rep, g); VO.trace ("", Rep, g); WO.trace ("", Rep, g); g.setColor (Color.MAGENTA); H.trace ("H", Rep, g); AP.trace ("", Rep, g); BQ.trace ("", Rep, g); CR.trace ("", Rep, g); AH.trace ("", Rep, g); BH.trace ("", Rep, g); CH.trace ("", Rep, g); g.setColor (Color.CYAN); C9pts.trace ("", Rep, g); g.setColor (Color.BLACK); U.trace ("U", Rep, g); V.trace ("V", Rep, g); W.trace ("W", Rep, g); P.trace ("P", Rep, g); Q.trace ("Q", Rep, g); R.trace ("R", Rep, g); L.trace ("L", Rep, g); M.trace ("M", Rep, g); N.trace ("N", Rep, g); g.setColor (Color.RED); A.trace ("A", Rep, g); B.trace ("B", Rep, g); C.trace ("C", Rep, g); g1.drawImage (img, 0, 0, this); } public void mousePressed (MouseEvent e) { int X = e.getX(); int Y = e.getY(); if (A.deplace = A.zone (X, Y, Rep)) { } else if (B.deplace = B.zone (X, Y, Rep)) { } else if (B.deplace = B.zone (X, Y, Rep)) { } else if (C.deplace = C.zone (X, Y, Rep)) { } } public void mouseDragged (MouseEvent e) { int X = e.getX(); int Y = e.getY(); A.bouge (X, Y, Rep); B.bouge (X, Y, Rep); C.bouge (X, Y, Rep); repaint(); } public void mouseReleased (MouseEvent e) { A.deplace = B.deplace = C.deplace = false; } public void mouseMoved (MouseEvent e) { int X = e.getX(); int Y = e.getY(); if (A.zone (X, Y, Rep) || B.zone (X, Y, Rep) || C.zone (X, Y, Rep)) { setCursor (new Cursor (Cursor.HAND_CURSOR)); } else { setCursor (new Cursor (Cursor.DEFAULT_CURSOR)); } } public void mouseClicked (MouseEvent e) {} public void mouseEntered (MouseEvent e) {} public void mouseExited (MouseEvent e) {} public static void main (String [] args) { new neufpts(); } }