diff options
Diffstat (limited to 'src/demos/nurbs/knotslidercomponent/JKnotSlider.java')
| -rwxr-xr-x | src/demos/nurbs/knotslidercomponent/JKnotSlider.java | 468 |
1 files changed, 468 insertions, 0 deletions
diff --git a/src/demos/nurbs/knotslidercomponent/JKnotSlider.java b/src/demos/nurbs/knotslidercomponent/JKnotSlider.java new file mode 100755 index 0000000..02da402 --- /dev/null +++ b/src/demos/nurbs/knotslidercomponent/JKnotSlider.java @@ -0,0 +1,468 @@ +package demos.nurbs.knotslidercomponent; + +import java.awt.Dimension; +import java.awt.Graphics; +import java.awt.Graphics2D; +import java.awt.event.ActionEvent; +import java.awt.event.ActionListener; +import java.awt.event.ComponentEvent; +import java.awt.event.ComponentListener; +import java.awt.event.MouseEvent; +import java.awt.event.MouseListener; +import java.awt.event.MouseMotionListener; +import java.util.Collections; +import java.util.LinkedList; +import java.util.Vector; + +import javax.swing.JComponent; + +/** + * GUI component for editing NURBS curve/surface knotvector + * Komponenta grafického uživatelského rozhraní pro editaci uzlového vektoru NURBS křivky + * @author Tomáš Hráský + * + */ +@SuppressWarnings("serial") +public class JKnotSlider extends JComponent implements ComponentListener, + MouseMotionListener, MouseListener { + + /** + * Knot value change event + * Událost změny hodoty prvku uzlového vektoru + */ + private static final String KNOT_MOVED = "KnotMoved"; + + /** + * Vector representing knots + * Vektor objektů reprezentujících prvky uzlového vektoru + */ + private Vector<KnotPolygon> knots; + + /** + * Previous knot vector (for recovery after user wrong setting) + * Předchozí vektor objektů reprezentujících prvky uzlového vektoru - pro obnovení při chybě uživatele + */ + private Vector<KnotPolygon> previousState; + + /** + * List of listeners attached to component + * Seznam ActionListenerů navázaných na komponentu + */ + private LinkedList<ActionListener> actionListeners; + + /** + * Value of one pixel movement + * Hodnota posunu o jeden pixel + */ + private double oneStep; + + /** + * Side space + * Mezera na straně osy + */ + private int side; + + /** + * Top space + * Mezera nad osou + */ + private int top; + + /** + * Actually selected knot index + * Index aktuálně vybraného prvku uzlového vektoru + */ + private int activeKnot; + +// private Vector<Integer> xVector; + + + /** + * Creates component + * Vytvoří komponentu + */ + public JKnotSlider() { + oneStep = 0; + top = 0; + side = 0; + knots = new Vector<KnotPolygon>(); + previousState=new Vector<KnotPolygon>(); +// xVector=new Vector<Integer>(); + + actionListeners = new LinkedList<ActionListener>(); + this.addComponentListener(this); + this.addMouseMotionListener(this); + this.addMouseListener(this); + } + + /** + * Adds listener to notified list. list + * Přidá zadaný listener do seznamu naslouchajících objektů + * @param listener added listener + */ + public void addActionListener(ActionListener listener) { + actionListeners.add(listener); + } + + /** + * Creates component with given knotvector knots + * Vytvoří komponentu se zadanými hodnotami uzlového vektoru + * @param knots knot vector + */ + public JKnotSlider(double[] knots) { + this(); + for (double d : knots) { + addKnot(new Double(d)); + } + } + + /** + * Creates component with given knotvector knots + * Vytvoří komponentu se zadanými hodnotami uzlového vektoru + * @param knots knot vector + */ + public JKnotSlider(Vector<Double> knots) { + this(); + for (Double d : knots) { + addKnot(d); + } + } + /** + * Creates component with given knotvector knots + * Vytvoří komponentu se zadanými hodnotami uzlového vektoru + * @param knots uzlový vektor + */ + public JKnotSlider(float[] knots) { + this(); + if(knots!=null) + for(double d:knots) + addKnot(new Double(d)); + } + + /** + * Adds a knot + * Přidá uzel do uzlového vektoru + * @param d knot + */ + public void addKnot(Double d) { +// preserveState(); + knots.add(new KnotPolygon(d, oneStep, top, side)); + } + + + /** + * Saves actual knotvector for later recovery + * Uloží aktuální uzlový vektor pro pozdější obnovení + */ + private void preserveState(){ + previousState.clear(); + previousState.addAll(knots); + } + +// /** +// * Přidá uzel do uzlového vektoru +// * @param d hodnota přidávaného uzlu +// */ +// public void addKnot(double d) { +// addKnot(new Double(d)); +// } + + /** + * Returns knotvector + * Vrací uzlový vektor + * @return knotvector array + */ + @SuppressWarnings("unchecked") + public double[] getKnots() { + double[] output = new double[knots.size()]; + int i = 0; + if (activeKnot >= 0) { + Double d = knots.get(activeKnot).getValue(); + Collections.sort(knots); + for (int j = 0; j < knots.size(); j++) + if (knots.get(j).getValue().equals(d)) { + activeKnot = j; + break; + } + } else + Collections.sort(knots); + for (KnotPolygon p : knots) + output[i++] = p.getValue().doubleValue(); + return output; + } + /** + * Returns knotvector + * Vrací uzlový vektor + * @return knotvector array + */ + public float[] getKnotsFloat(){ + float[] output=new float[knots.size()]; + int i=0; + for(double d:getKnots()){ + output[i++]=(float) d; + } + return output; + } + + /* (non-Javadoc) + * @see javax.swing.JComponent#paintComponent(java.awt.Graphics) + */ + @Override + protected void paintComponent(Graphics g) { + super.paintComponent(g); + drawBaseLine((Graphics2D) g); + updateMultis((Graphics2D)g); + drawKnots((Graphics2D) g); + } + + /** + * Draws info about knot multiplicity + * Vykreslí informaci o násobnosti uzlů + * @param graphics2D object to draw to + */ + private void updateMultis(Graphics2D graphics2D) { + Vector<Integer> vrcholy=new Vector<Integer>(); + for(int i=0;i<knots.size();i++){ + knots.get(i).setMulti(0); + vrcholy.add(knots.get(i).xpoints[0]); + } + + for(int i=0;i<knots.size();i++){ + //k.xpoints[0] //hodnota na X -> počet stejných hodnot nám zjistí multiplicitu + for(Integer ii:vrcholy) + if(ii.intValue()==knots.get(i).xpoints[0]) + knots.get(i).setMulti(knots.get(i).getMulti()+1); + } + } + + /** + * Sends event to all notified listeners + * Pošle všem navešeným listenerům událost + * @param ae event being sent + */ + private void notificateActionListeners(ActionEvent ae) { + for (ActionListener a : actionListeners) + a.actionPerformed(ae); + } + + /** + * "Draws" knotvector + * Vykreslí reprezentaci uzlového vektoru + * @param g object to draw to + */ + private void drawKnots(Graphics2D g) { + String txt; +// int freq; + for (KnotPolygon p : knots) { + g.drawPolygon(p); + g.drawString(p.getMulti()+"x",p.xpoints[1],top); +// freq=Collections.frequency(xVector,Integer.valueOf(p.xpoints[0])); +// g.drawString(freq+"x",p.xpoints[1],top-8); + } + g.rotate(Math.PI / 2); + for (KnotPolygon p : knots) { + txt = p.getValue().toString(); + if (txt.length() > 5) + txt = txt.substring(0, 4); + g.translate(top + 15, -p.xpoints[1]); + g.drawString(txt, 0, 0); + g.translate(-(top + 15), p.xpoints[1]); + } + } + + + /** + * Draws baseline + * Vykreslí základní linku + * @param g object to draw to + */ + private void drawBaseLine(Graphics2D g) { + g.drawLine(side, top, (int) (side + (this.getWidth() * .8)), top); + } + + /* (non-Javadoc) + * @see java.awt.Component#getMinimumSize() + */ + @Override + public Dimension getMinimumSize() { + return new Dimension(100, 60); + } + + /* (non-Javadoc) + * @see java.awt.Component#getPreferredSize() + */ + @Override + public Dimension getPreferredSize() { + return new Dimension(250, 60); + } + + /* (non-Javadoc) + * @see java.awt.event.ComponentListener#componentResized(java.awt.event.ComponentEvent) + */ + public void componentResized(ComponentEvent e) { + int width = this.getWidth(); + int height = this.getHeight(); + + side = (int) (width * .1); + top = (int) (height * .3); + + width *= .8; + height *= .8; + + oneStep = 1d / (width); + + updateKnotPolygons(); + repaint(); + } + + /** + * Updates all objects representing knots + * Aktualizuje nastavení všech objektů reprezentujících uzly + */ + private void updateKnotPolygons() { + for (KnotPolygon p : knots) { + p.update(oneStep, top, side); + } + + } + + /* (non-Javadoc) + * @see java.awt.event.ComponentListener#componentMoved(java.awt.event.ComponentEvent) + */ + public void componentMoved(ComponentEvent e) { + } + + /* (non-Javadoc) + * @see java.awt.event.ComponentListener#componentShown(java.awt.event.ComponentEvent) + */ + public void componentShown(ComponentEvent e) { + } + + /* (non-Javadoc) + * @see java.awt.event.ComponentListener#componentHidden(java.awt.event.ComponentEvent) + */ + public void componentHidden(ComponentEvent e) { + } + + /* (non-Javadoc) + * @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent) + */ + public void mouseDragged(MouseEvent e) { + + if (activeKnot >= 0) { +// preserveState(); + + if (e.getX() >= side && e.getX() <= (getWidth() * .8 + side)) { + knots.get(activeKnot).updateByX(e.getX()); + } else if (e.getX() < side) + knots.get(activeKnot).updateByValue(new Double(0)); + else + knots.get(activeKnot).updateByValue(new Double(1)); + + notificateActionListeners(new ActionEvent(this, + ActionEvent.ACTION_PERFORMED, KNOT_MOVED)); + repaint(); + } + } + +// private void updateXVector() { +// xVector.clear(); +// for(KnotPolygon p:knots){ +// xVector.add(Integer.valueOf(p.xpoints[0])); +// } +// } + + /* (non-Javadoc) + * @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent) + */ + public void mouseMoved(MouseEvent e) { + } + + /* (non-Javadoc) + * @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent) + */ + public void mouseClicked(MouseEvent e) { + } + + /* (non-Javadoc) + * @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent) + */ + public void mousePressed(MouseEvent e) { + int x = e.getX(); + int y = e.getY(); + KnotPolygon p; + this.activeKnot = -1; + for (int i = 0; i < knots.size(); i++) { + p = knots.get(i); + if (p.contains(x, y)) { + activeKnot = i; + break; + } + } + } + + /* (non-Javadoc) + * @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent) + */ + public void mouseReleased(MouseEvent e) { + this.activeKnot = -1; + } + + /* (non-Javadoc) + * @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent) + */ + public void mouseEntered(MouseEvent e) { + } + + /* (non-Javadoc) + * @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent) + */ + public void mouseExited(MouseEvent e) { + } + +// /** +// * Nastaví uzlový vektor +// * @param knots nový uzlový vektor +// */ +// public void setKnots(double[] knots) { +// preserveState(); +// for(double d:knots) +// addKnot(new Double(d)); +// repaint(); +// } + /** + * Sets knotvector + * Nastaví uzlový vektor + * @param knots new knotvector + */ + public void setKnots(float[] knots) { +// preserveState(); + this.knots.clear(); + for(double d:knots) + addKnot(new Double(d)); + repaint(); + } + + /** + * Checks whether knot multiplicity is not bigger than given value + * Zkontroluje, zda násobnost uzlů nepřekročila zadanou hodnotu + * @param maxMulti maximum multiplicity + * @return true if multiplicity is NOT bigger + */ + public boolean checkKnotMulti(int maxMulti) { + updateMultis((Graphics2D) this.getGraphics()); + for(KnotPolygon p:knots) + if(p.getMulti()>maxMulti) + return false; + return true; + } + +// /** +// * Obnosví poslední uložený stav uzlového vektoru +// */ +// public void restoreState() { +// knots.clear(); +// knots.addAll(previousState); +// repaint(); +// } +} |