public void shuffle() {
for (ManModel man : dots) {
int randX = rgen.nextInt(Constants.MAN_WIDTH / 2, getWidth() - Constants.MAN_WIDTH / 2);
int randY = rgen.nextInt(Constants.MAN_HEIGHT / 2, getHeight() - Constants.MAN_HEIGHT / 2);
man.setXY(randX, randY);
// Debug.println(randX + ", " + randY);
// Debug.println("width" + getWidth() + ": height" + getHeight());
}
repaint();
}
private double calculatePersonDistance2(int sep) {
return Constants.MAN_HEIGHT
+ rgen.nextDouble(
0, Math.min(getHeight() / 2 - Constants.MAN_HEIGHT, sep * Constants.MAN_HEIGHT));
}
private double calculateOffsetAngle(double wideAngle) {
double angleMargin = wideAngle / 5;
return rgen.nextDouble(angleMargin, (int) wideAngle - angleMargin);
}
public class ManPanel extends JPanel {
/** */
private static final long serialVersionUID = -5043717894855235511L;
// our data model is a list of DotModel objects
// (java.util is specified here to distinguish vs.
// the GUI java.awt.List)
private java.util.List<ManModel> dots;
private ArrayList<Line> lines;
private ArrayList<Line> circles;
private ArrayList<Arc> arcs;
private static RandomGenerator rgen = RandomGenerator.getInstance();
public static final int DRAG_VS_CLICK = 25;
public static final int CLICKING_ON_LINE = 25;
// remember the last dot for mouse tracking
private int lastX, lastY;
private ManModel lastDot;
private DoublePoint origPoint;
private Line newLine;
// Booleans that control how we draw
private boolean print;
private boolean smartRepaint;
private boolean oldRepaint;
private boolean redPaint;
private int pencilMode;
private int buttonPressed;
private Image img;
private JLabel numberMen;
private JLabel message;
private ManFrame frame;
// dirty bit = changed from disk version
private boolean dirty;
/** Creates an empty ManPanel. */
public ManPanel(int width, int height, ManFrame f) {
setPreferredSize(new Dimension(width, height));
// Subclasing off JPanel, these things work
setOpaque(true);
// optimization: set opaque true if we fill 100% of our pixels
setBackground(Color.gray);
frame = f;
dots = new ArrayList<ManModel>();
lines = new ArrayList<Line>();
circles = new ArrayList<Line>();
arcs = new ArrayList<Arc>();
clear();
ClassLoader cl = Thread.currentThread().getContextClassLoader();
InputStream imageURL = cl.getResourceAsStream(Constants.MAN_IMG_PATH);
try {
img = ImageIO.read(imageURL);
} catch (IOException e) {
e.printStackTrace();
}
// Controls for debugging options
print = Constants.DEBUG_MODE;
smartRepaint = true;
oldRepaint = true;
redPaint = false;
pencilMode = Constants.LINE_MODE;
origPoint = null;
newLine = null;
numberMen = new JLabel("0");
message = new JLabel("");
numberMen.setFont(Constants.FONT_LARGE);
message.setFont(Constants.FONT_LARGE);
message.setAlignmentX(JLabel.CENTER_ALIGNMENT);
setLayout(new BorderLayout());
add(numberMen, BorderLayout.SOUTH);
add(message, BorderLayout.NORTH);
/*
Mouse Strategy:
-if the click is not on an existing dot, then make a dot
-note where the first click is into lastX, lastY
-then in MouseMotion: compute the delta of this position
vs. the last
-Use the delta to change things (not the abs coordinates)
*/
addMouseListener(
new MouseAdapter() {
public void mousePressed(MouseEvent e) {
if (print) {
System.out.println("press:" + e.getX() + " " + e.getY() + ", " + e.getButton());
}
if (buttonPressed != 0) {
return;
}
origPoint = new DoublePoint(e.getX(), e.getY());
lastDot = findDot(e.getX(), e.getY());
buttonPressed = e.getButton();
if (buttonPressed == MouseEvent.BUTTON3) {
rightPress(e, lastDot);
} else {
leftPress(e, lastDot);
}
}
private void rightPress(MouseEvent e, ManModel dotModel) {
if (dotModel == null) {
newLine = findClosestLine(origPoint);
}
}
private void leftPress(MouseEvent e, ManModel dotModel) {
// invariant -- dotModel var is now set,
// one way or another
// Note the starting setup to compute deltas later
// lastDot = origDot;
lastX = e.getX();
lastY = e.getY();
// Change color of dot in some cases
// shift -> change to black
// double-click -> change to red
// if(dotModel != null) {
// if (e.isShiftDown()) {
// doSetColor(dotModel, Color.BLACK);
// }
// else if (e.getClickCount() == 2) {
// doSetColor(dotModel, Color.RED);
// }
// }
}
public void mouseReleased(MouseEvent e) {
if (print) {
System.out.println("release: " + e.getX() + " " + e.getY());
}
if (buttonPressed == MouseEvent.BUTTON3) {
rightRelease(e);
} else {
leftRelease(e);
}
buttonPressed = 0;
newLine = null;
lastDot = null;
}
private void leftRelease(MouseEvent e) {
if (lastDot == null && newLine == null) { // make a dot if nothing there
doAdd(e.getX(), e.getY());
}
}
private void rightRelease(MouseEvent e) {
if (newLine != null && lastDot == null) {
lines.remove(newLine);
repaintLine(newLine);
} else if (lastDot != null) {
dots.remove(lastDot);
repaintDot(lastDot);
}
}
});
addMouseMotionListener(
new MouseMotionAdapter() {
public void mouseDragged(MouseEvent e) {
if (print) {
System.out.println("drag:" + e.getX() + " " + e.getY() + ", " + e.getButton());
}
DoublePoint latestPoint = new DoublePoint(e.getX(), e.getY());
if (buttonPressed == MouseEvent.BUTTON3) {
rightDrag(e, latestPoint);
} else {
leftDrag(e, latestPoint);
}
}
private void leftDrag(MouseEvent e, DoublePoint latestPoint) {
if (lastDot == null) {
if (pencilMode == 1) {
if (newLine == null) {
createLine(origPoint, latestPoint);
return;
}
DoublePoint start = newLine.getEnd();
if (start.distance(latestPoint) > (DRAG_VS_CLICK * 2)) {
createLine(start, latestPoint);
} else {
// changeLine(newLine, latestPoint);
}
} else if (pencilMode == 0) {
if (newLine != null) {
changeLine(newLine, latestPoint);
} else if (origPoint.distance(latestPoint) > DRAG_VS_CLICK && newLine == null) {
newLine = addLine(origPoint, latestPoint, lines);
}
}
}
if (lastDot != null) {
// compute delta from last point
int dx = e.getX() - lastX;
int dy = e.getY() - lastY;
lastX = e.getX();
lastY = e.getY();
// apply the delta to that dot model
doMove(lastDot, dx, dy);
}
}
private void rightDrag(MouseEvent e, DoublePoint latestPoint) {
if (newLine != null) {
moveLine(newLine, latestPoint);
}
lastDot = new ManModel();
}
private void createLine(DoublePoint start, DoublePoint end) {
newLine = new Line(start, end);
newLine.setPencil(pencilMode);
lines.add(newLine);
repaintLine(newLine);
}
});
}
// Clears out all the data (used by new docs, and for opening docs)
public void clear() {
dots.clear();
lines.clear();
circles.clear();
arcs.clear();
dirty = false;
repaint();
}
// Default ctor, uses a default size
public ManPanel() {
this(300, 300, null);
}
public void placeDivider(int num) {
if (num < 2 || num > 5) {
return;
}
if (num == 2) {}
}
/**
* Moves a dot from one place to another. Does the necessary repaint. This animation can repaint
* two ways. Plain repaint: repaint the whole panel Smart repaint: repaint just the old+new bounds
* of the dot
*/
public void doMove(ManModel dotModel, int dx, int dy) {
if (!smartRepaint) {
// Change the data model, then repaint the whole panel
dotModel.moveBy(dx, dy);
repaint();
} else {
// Smart repaint: old + new
// Repaint the "old" rectangle
if (oldRepaint) {
repaintDot(dotModel);
}
// Change the model
dotModel.moveBy(dx, dy);
// Repaint the "new" rectangle
repaintDot(dotModel);
}
setDirty(true);
}
private void moveLine(Line l, DoublePoint latestPoint) {
DoublePoint origEndPoint = l.getEnd();
DoublePoint origStartPoint = l.getStart();
// repaintRegion(origStartPoint, origEndPoint);
repaint();
int dx = (int) (latestPoint.getX() - origPoint.getX());
int dy = (int) (latestPoint.getY() - origPoint.getY());
origPoint = latestPoint;
l.moveBy(dx, dy);
DoublePoint newStartPoint = l.getStart();
DoublePoint newEndPoint = l.getEnd();
repaintRegion(newStartPoint, newEndPoint);
repaint();
}
private void changeLine(Line l, DoublePoint latestPoint) {
DoublePoint origEndPoint = l.getEnd();
repaintRegion(l.getStart(), origEndPoint);
l.setEndPoint(latestPoint);
repaintRegion(origEndPoint, l.getEnd());
}
/**
* Utility -- change the color of the given dot model, and then do the needed repaint/setDirty.
*/
private void doSetColor(ManModel dot, Color color) {
repaint(); // bookeeping for the view: repaint and set dirty
setDirty(true);
}
/**
* Utility -- does a repaint rect just around one dot. Used by smart repaint when dragging a dot.
*/
private void repaintDot(ManModel dot) {
repaint(
dot.getX() - Constants.MAN_WIDTH / 2,
dot.getY() - Constants.MAN_HEIGHT / 2,
Constants.MAN_WIDTH + 1,
Constants.MAN_HEIGHT + 1);
}
private void repaintLine(Line l) {
repaintRegion(l.getStart(), l.getEnd());
}
/**
* Utility -- does a repaint rect around a region specified by two points. Used by smart repaint
* when dragging a dot.
*/
private void repaintRegion(DoublePoint start, DoublePoint end) {
int smallX = Math.min((int) start.getX(), (int) end.getX());
int smallY = Math.min((int) start.getY(), (int) end.getY());
int width = (int) Math.abs(end.getX() - start.getX());
int height = (int) Math.abs(end.getY() - start.getY());
repaint(smallX - 2, smallY - 2, width + 5, height + 5);
}
/**
* Utility -- given a completed dot model, adds it and sets things up. This is the bottleneck for
* adding a dot.
*/
public void doAdd(ManModel dotModel) {
dots.add(dotModel);
repaint();
setDirty(true);
}
/** Convenience doAdd() that takes an int x,y, adds and returns a dot model for it. */
public ManModel doAdd(int x, int y) {
ManModel dotModel = new ManModel();
dotModel.setXY(x, y);
// Debug.println("MAN_WIDTH is " + MAN_WIDTH + " and MAN_HEIGHT is " + MAN_HEIGHT);
doAdd(dotModel);
return dotModel;
}
private Line findClosestLine(DoublePoint p) {
Line closest = null;
double smallestDistance = 0;
for (int i = 0; i < lines.size(); i++) {
Line l = lines.get(i);
double distance = calculateDistance(l, p);
if (i == 0 || distance < smallestDistance) {
closest = l;
smallestDistance = distance;
}
}
if (smallestDistance < CLICKING_ON_LINE) {
return closest;
} else {
return null;
}
}
/* Going to use Heron's Formula to for calculating the distance
* first we calculate the distance of each of the sides,
* and use that info to calcualate the height of the triangle, giving us back the
* distance
*/
private double calculateDistance(Line l, DoublePoint p) {
double side1 = l.getStart().distance(l.getEnd());
double side2 = l.getStart().distance(p);
double side3 = l.getEnd().distance(p);
double hS = (side1 + side2 + side3) / 2;
double triangleArea = Math.sqrt(hS * (hS - side1) * (hS - side2) * (hS - side3));
double distance = (2 * triangleArea) / side1;
return distance;
}
/** Finds a dot in the data model that contains the given x,y or returns null. */
public ManModel findDot(int x, int y) {
// Search through the dots in reverse order, so
// hit topmost ones first.
for (int i = dots.size() - 1; i >= 0; i--) {
ManModel dotModel = dots.get(i);
int centerX = dotModel.getX();
int centerY = dotModel.getY();
// figure x-squared + y-squared, see if it's
// less than radius squared.
// trick: don't need to take square root this way
if (x > (centerX - Constants.MAN_WIDTH / 2)
&& x < (centerX + Constants.MAN_WIDTH / 2)
&& y > (centerY - Constants.MAN_HEIGHT / 2)
&& y < (centerY + Constants.MAN_HEIGHT / 2)) {
return dotModel;
}
}
return null;
}
/** Standard override -- draws all the dots. */
public void paintComponent(Graphics g) {
// As a JPanel subclass we need call super.paintComponent()
// so JPanel will draw the white background for us.
super.paintComponent(g);
Color origColor = g.getColor();
for (Line l : lines) {
if (l.isPencil()) {
g.setColor(Color.RED);
} else {
g.setColor(Color.BLACK);
}
g.drawLine((int) l.getX1(), (int) l.getY1(), (int) l.getX2(), (int) l.getY2());
}
g.setColor(origColor);
// Go through all the dots, drawing a circle for each
for (ManModel dotModel : dots) {
// g.drawImage(img, dotModel.getX() - MAN_WIDTH/2, dotModel.getY() - MAN_HEIGHT/2, MAN_WIDTH,
// MAN_HEIGHT, null);
g.drawImage(
img,
dotModel.getX() - Constants.MAN_WIDTH / 2,
dotModel.getY() - Constants.MAN_HEIGHT / 2,
null);
}
numberMen.setText("" + dots.size());
// Draw the "requested" clip rect in red
// (this just shows off smart-repaint)
if (redPaint) {
Rectangle clip = g.getClipBounds();
if (clip != null) {
g.setColor(Color.red);
g.drawRect(clip.x, clip.y, clip.width - 1, clip.height - 1);
g.setColor(origColor);
}
}
g.setColor(Color.RED);
for (Line l : circles) {
g.drawLine((int) l.getX1(), (int) l.getY1(), (int) l.getX2(), (int) l.getY2());
}
for (Arc l : arcs) {
g.drawArc(
(int) l.getX1(),
(int) l.getY1(),
(int) l.getWidth(),
(int) l.getHeight(),
(int) l.getStartAngle(),
(int) l.getSweep());
// g.drawArc((int) l.getX1(), (int) l.getY1(), (int) l.getWidth()+1, (int) l.getHeight()+1,
// l.getStartAngle()-1, l.getSweep());
}
g.setColor(Color.BLACK);
}
// Setters used by checkboxes
public void setPrint(boolean print) {
this.print = print;
}
public void setSmart(boolean smart) {
smartRepaint = smart;
}
public void setOld(boolean old) {
oldRepaint = old;
}
public void setRed(boolean red) {
redPaint = red;
}
/** --File Saving Stuff-- from here down. */
/** Accessors for the dirty bit. */
public boolean getDirty() {
return dirty;
}
public void setDirty(boolean dirty) {
this.dirty = dirty;
}
public void shuffle() {
for (ManModel man : dots) {
int randX = rgen.nextInt(Constants.MAN_WIDTH / 2, getWidth() - Constants.MAN_WIDTH / 2);
int randY = rgen.nextInt(Constants.MAN_HEIGHT / 2, getHeight() - Constants.MAN_HEIGHT / 2);
man.setXY(randX, randY);
// Debug.println(randX + ", " + randY);
// Debug.println("width" + getWidth() + ": height" + getHeight());
}
repaint();
}
public void clearAll() {
clear();
}
public void setPencilMode(boolean actAsPencil) {
int mode = Constants.LINE_MODE;
if (actAsPencil) {
mode = Constants.PENCIL_MODE;
}
pencilMode = mode;
}
public void setPplMode(boolean drawMen) {
if (drawMen) {
pencilMode = Constants.PPL_MODE;
} else {
pencilMode = Constants.LINE_MODE;
}
}
public void enableControls() {
frame.enableControls();
}
public void displayMessage(String s) {
message.setText(s);
}
public void launchDividingAnimation(int den, int ppl, int numer, int ans) {
clearAll();
PageDivider pDiv = new PageDivider(this, den, ppl, numer, ans);
Timer divTimer = new Timer(1500, pDiv);
displayMessage("Make " + den + " equal area" + ((den == 1) ? "" : "s"));
divTimer.setInitialDelay(3000);
pDiv.setTimer(divTimer);
divTimer.start();
}
public void launchPeopleAddAnimation(int ppl, int den, int numer, int ans) {
ManipAdder mAdd = new ManipAdder(this, ppl, den, numer, ans);
Timer manipTimer = new Timer(1000, mAdd);
displayMessage("Count off " + ppl + " " + ((ppl == 1) ? "person" : "people") + ".");
manipTimer.setInitialDelay(3000);
mAdd.setTimer(manipTimer);
manipTimer.start();
}
public void launchCirclerAnimation(int ppl, int den, int numer, int ans) {
GroupCircler gCir = new GroupCircler(this, ppl, den, numer, ans);
Timer manipTimer = new Timer(1000, gCir);
if (ans == -1) {
displayMessage(Constants.MAN_MSG_GROUPS_NOT_EQUAL);
} else {
displayMessage("Circle " + numer + " group" + ((numer == 1) ? "" : "s") + ".");
}
manipTimer.setInitialDelay(3000);
gCir.setTimer(manipTimer);
manipTimer.start();
}
public void clearMessage() {
message.setText("");
}
public void drawLines(int n) {
String s = "Make " + n + " equal area" + ((n == 1) ? "" : "s");
addLines(lines, n, n);
displayMessage(s);
repaint();
}
public void addLines(ArrayList<Line> list, int n, int divs) {
double theta = calculateTheta(divs);
double r = calculateLineLength();
DoublePoint center = getCenter();
Debug.println("Center pt:" + center);
for (int i = 0; i < n; i++) {
DoublePoint offShoot = getPolarProjectedPoint(center, r, theta * i);
Debug.println("offshoot" + i + ": " + offShoot + " theta: " + theta * i);
addLine(center, offShoot, list);
}
}
public void addALine(int i, double theta, double r, DoublePoint center) {
DoublePoint offShoot = getPolarProjectedPoint(center, r, theta * i);
addLine(center, offShoot, lines);
}
public void addACircle(int i, double theta, double r, DoublePoint center, int den) {
addASide(i, theta, r, center);
addASide((i + 1) % den, theta, r, center);
addAnArc(i, theta);
}
public void addASide(int i, double theta, double r, DoublePoint center) {
DoublePoint offShoot = getPolarProjectedPoint(center, r, theta * i);
addLine(center, offShoot, circles);
}
public void addAnArc(int i, double theta) {
Arc temp =
new Arc(
new DoublePoint(0, 0),
new DoublePoint(getWidth(), getHeight()),
-90 + (int) (i * theta),
(int) theta);
arcs.add(temp);
}
public void drawPeopleOld(int num, int divs) {
// if(divs == 2) {
// divs = 4;
// }
double theta = calculateTheta(divs);
double offset = theta / 2;
boolean quarter = true;
DoublePoint center = getCenter();
for (int i = 0; i < num; i++) {
double r = calculatePersonDistance(i / divs);
if (divs <= 3 && i % divs == 0) {
if (quarter) {
offset = theta / 4;
} else {
offset = (3 * theta) / 4;
}
quarter = !quarter;
}
if (divs <= 3) {
r = calculatePersonDistance(i / (divs * 2));
}
double angle = theta * i + offset;
DoublePoint pos = getPolarProjectedPoint(center, r, angle);
doAdd((int) pos.getX(), (int) pos.getY());
}
repaint();
}
public void drawPeople(int num, int divs) {
double theta = calculateTheta(divs);
DoublePoint center = getCenter();
for (int i = 0; i < num; i++) {
addAManip(i, theta, center, divs);
}
repaint();
}
public void addAManip(int ithPerson, double theta, DoublePoint center, int divs) {
DoublePoint pos = null;
while (true) {
double offset = calculateOffsetAngle(theta);
double r = calculatePersonDistance2(ithPerson / divs);
double angle = theta * ithPerson + offset;
pos = getPolarProjectedPoint(center, r, angle);
if (findDotArea((int) pos.getX(), (int) pos.getY()) == null) {
break;
}
}
doAdd((int) pos.getX(), (int) pos.getY());
}
public void drawOvals(int num, int divs) {
addLines(circles, num + 1, divs);
addArcs(divs);
}
private void addArcs(int divs) {
double theta = calculateTheta(divs);
for (int i = 0; i < circles.size() - 1; i++) {
Line nextLine = circles.get((i + 1) % circles.size());
DoublePoint start = circles.get(i).getEnd();
Arc temp =
new Arc(
new DoublePoint(0, 0),
new DoublePoint(getWidth(), getHeight()),
-90 + (int) (i * theta),
(int) theta + 5);
Debug.println(
start + ", " + nextLine.getEnd() + "start: " + (i * theta) + ", with sweep: " + theta);
arcs.add(temp);
}
}
private ManModel findDotArea(int x, int y) {
return findOverlap(x, y);
// if(Constants.MANIPS_OVERLAP) {
// return null;
// }
// if(findDot(x, y) != null) {
// return findDot(x, y);
// }
// double manW = Constants.MAN_WIDTH/2;
// double manH = Constants.MAN_HEIGHT/2;
// double[] xS = {x - manW, x - manW, x + manW, x + manW};
// double[] yS = {y - manH, y + manH, y - manH, y + manH};
// for(int i = 0; i < xS.length; i++) {
// ManModel m = findDot((int) xS[i], (int) yS[i]);
// if(m != null) {
// return m;
// }
// }
// return null;
}
// new model based on web search for rectangle overlap.
private ManModel findOverlap(int x, int y) {
if (Constants.MANIPS_OVERLAP) {
return null;
}
if (findDot(x, y) != null) {
return findDot(x, y);
}
double manW = Constants.MAN_WIDTH / 2;
double manH = Constants.MAN_HEIGHT / 2;
double pLeftX = x - manW;
double pRightX = x + manW;
double pTopY = y - manH;
double pBotY = y + manH;
return findOverlap(pLeftX, pTopY, pRightX, pBotY);
}
private ManModel findOverlap(double x1, double y1, double x2, double y2) {
double manW = Constants.MAN_WIDTH / 2;
double manH = Constants.MAN_HEIGHT / 2;
for (ManModel dot : dots) {
double leftX = dot.getX() - manW;
double topY = dot.getY() - manH;
double rightX = dot.getX() + manW;
double botY = dot.getY() + manH;
if (x1 < rightX && y1 < botY && x2 > leftX && y2 > topY) {
return dot;
}
}
return null;
}
public double calculateTheta(int n) {
return 360.0 / (n);
}
public double calculateLineLength() {
double l = Math.max(getWidth(), getHeight());
return l / Math.sqrt(2);
}
private double calculatePersonDistance(double sep) {
return Constants.MAN_HEIGHT + sep * Constants.MAN_HEIGHT;
}
private double calculateOffsetAngle(double wideAngle) {
double angleMargin = wideAngle / 5;
return rgen.nextDouble(angleMargin, (int) wideAngle - angleMargin);
}
private double calculatePersonDistance2(int sep) {
return Constants.MAN_HEIGHT
+ rgen.nextDouble(
0, Math.min(getHeight() / 2 - Constants.MAN_HEIGHT, sep * Constants.MAN_HEIGHT));
}
public DoublePoint getCenter() {
return new DoublePoint(getWidth() / 2, getHeight() / 2);
}
private DoublePoint getPolarProjectedPoint(DoublePoint orig, double r, double theta) {
double x = r * Math.sin(Math.toRadians(theta));
double y = r * Math.cos(Math.toRadians(theta));
return new DoublePoint((orig.getX() + x), (orig.getY() + y));
}
public Line addLine(DoublePoint p1, DoublePoint p2, ArrayList<Line> list) {
Line temp = new Line(p1, p2);
list.add(temp);
return temp;
}
/** Saves out our state (all the dot models) to the given file. Uses Java built-in XMLEncoder. */
public void save(File file) {
try {
XMLEncoder xmlOut = new XMLEncoder(new BufferedOutputStream(new FileOutputStream(file)));
// Could do something like this to control which
// properties are sent. By default, it just sends
// all of them with getters/setters, which is fine in this case.
// xmlOut.setPersistenceDelegate(ManModel.class,
// new DefaultPersistenceDelegate(
// new String[]{ "x", "y", "color" }) );
// Make a ManModel array of everything
ManModel[] dotArray = dots.toArray(new ManModel[0]);
// Dump that whole array
xmlOut.writeObject(dotArray);
// And we're done!
xmlOut.close();
setDirty(false);
// cute: only clear dirty bit *after* all the things that
// could fail/throw an exception
} catch (IOException e) {
e.printStackTrace();
}
}
/** Reads in all the dots from the file and set the panel to show them. */
public void open(File file) {
ManModel[] dotArray = null;
try {
XMLDecoder xmlIn = new XMLDecoder(new BufferedInputStream(new FileInputStream(file)));
dotArray = (ManModel[]) xmlIn.readObject();
xmlIn.close();
// now we have the data, so go ahead and wipe out the old state
// and put in the new. Goes through the same doAdd() bottleneck
// used by the UI to add dots.
// Note that we do this after the operations that might throw.
clear();
for (ManModel dm : dotArray) {
doAdd(dm);
}
setDirty(false);
} catch (IOException e) {
e.printStackTrace();
}
}
/** Saves the current appearance of the ManPanel out as a PNG in the given file. */
public void saveImage(File file) {
// Create an image bitmap, same size as ourselves
BufferedImage image = (BufferedImage) createImage(getWidth(), getHeight());
// Get Graphics pointing to the bitmap, and call paintAll()
// This is the RARE case where calling paint() is appropriate
// (normally the system calls paint()/paintComponent())
Graphics g = image.getGraphics();
paintAll(g);
g.dispose(); // Good but not required--
// dispose() Graphics you create yourself when done with them.
try {
javax.imageio.ImageIO.write(image, "PNG", file);
} catch (IOException ex) {
ex.printStackTrace();
}
}
// For testing, also have a main that makes
// a ManPanel but with no controls around it
public static void main(String[] args) {
JFrame frame = new JFrame("ManPanel");
ManPanel manPanel = new ManPanel(800, 600, null);
frame.add(manPanel);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
}