static {
Stroke stroke = new BasicStroke(2);
selectionShape = stroke.createStrokedShape(hitRect);
format.setMinimumIntegerDigits(1);
format.setMinimumFractionDigits(1);
format.setMaximumFractionDigits(2);
}
/**
* A Step is associated with a single frame of a TTrack. It contains an array of TPoints that define
* its image data and a Footprint that determines its screen appearance. This is an abstract class
* and cannot be instantiated directly.
*
* @author Douglas Brown
*/
public abstract class Step implements Cloneable {
// static fields
protected static Rectangle hitRect = new Rectangle(-4, -4, 8, 8);
protected static Shape selectionShape;
protected static AffineTransform transform = new AffineTransform();
protected static NumberFormat format = NumberFormat.getNumberInstance(Locale.US);
protected static Font textLayoutFont = new JTextField().getFont();
protected static FontRenderContext frc =
new FontRenderContext(
null, // no AffineTransform
false, // no antialiasing
false); // no fractional metrics
static {
Stroke stroke = new BasicStroke(2);
selectionShape = stroke.createStrokedShape(hitRect);
format.setMinimumIntegerDigits(1);
format.setMinimumFractionDigits(1);
format.setMaximumFractionDigits(2);
}
// instance fields
protected TTrack track; // track this belongs to
protected int n; // frame number
protected Footprint footprint; // determines appearance
protected TPoint[] points; // defines image data
protected Point[] screenPoints; // for transform conversions
protected boolean valid; // invalid steps not drawn
protected Map<TrackerPanel, Mark> marks // tracker panel to Mark
= new HashMap<TrackerPanel, Mark>();
protected int defaultIndex = 0; // array index of default TPoint
protected boolean dataVisible = true; // true if visible in plots, tables
/**
* Constructs a Step with the specified frame number.
*
* @param track the track
* @param n the frame number
*/
protected Step(TTrack track, int n) {
this.track = track;
this.n = n;
}
/**
* Gets the frame number.
*
* @return the frame number
*/
public int getFrameNumber() {
return n;
}
/**
* Sets the footprint.
*
* @param footprint the footprint
*/
public void setFootprint(Footprint footprint) {
this.footprint = footprint;
}
/**
* Gets the track.
*
* @return the track
*/
public TTrack getTrack() {
return track;
}
/**
* Gets the array of TPoints contained in this step.
*
* @return the TPoints array
*/
public TPoint[] getPoints() {
return points;
}
/**
* Gets the index of a point in the points[] array.
*
* @param p the point
* @return the index, or -1 if not found
*/
public int getPointIndex(TPoint p) {
for (int i = 0; i < points.length; i++) {
if (points[i] == p) return i;
}
return -1;
}
/**
* Gets the default point. The default point is the point initially selected when the step is
* created.
*
* @return the default TPoint
*/
public TPoint getDefaultPoint() {
return points[defaultIndex];
}
/**
* Sets the default point index. This defines the index of the points array used to get the point
* initially selected when the step is created.
*
* @param index the index
*/
public void setDefaultPointIndex(int index) {
index = Math.min(index, points.length - 1);
defaultIndex = Math.max(0, index);
}
/**
* Erases this on the specified tracker panel. Erasing adds the current bounds to the dirty region
* and nulls the step's mark to trigger creation of a new one.
*
* @param trackerPanel the tracker panel
*/
public void erase(TrackerPanel trackerPanel) {
if (marks.get(trackerPanel) == null) return; // already dirty
trackerPanel.addDirtyRegion(getBounds(trackerPanel)); // old bounds
marks.put(trackerPanel, null); // triggers new mark
}
/**
* Erases and remarks this on the specified tracker panel. Remarking creates a new mark for the
* step and adds both the old and new bounds to the tracker panel's dirty region.
*
* @param trackerPanel the tracker panel
*/
public void remark(TrackerPanel trackerPanel) {
erase(trackerPanel);
trackerPanel.addDirtyRegion(getBounds(trackerPanel)); // new bounds
}
/**
* Repaints this on the specified tracker panel. Repainting a step first remarks it and then
* requests a repaint of the panel's dirty region.
*
* @param trackerPanel the tracker panel
*/
public void repaint(TrackerPanel trackerPanel) {
remark(trackerPanel);
trackerPanel.repaintDirtyRegion();
}
/** Erases this on all tracker panels. */
public void erase() {
Iterator<TrackerPanel> it = marks.keySet().iterator();
while (it.hasNext()) erase(it.next());
}
/** Remarks this on all tracker panels. */
public void remark() {
Iterator<TrackerPanel> it = marks.keySet().iterator();
while (it.hasNext()) remark(it.next());
}
/** Repaints this on all tracker panels. */
public void repaint() {
Iterator<TrackerPanel> it = marks.keySet().iterator();
while (it.hasNext()) repaint(it.next());
}
/**
* Draws this step.
*
* @param panel the drawing panel requesting the drawing
* @param g the graphics context on which to draw
*/
public void draw(DrawingPanel panel, Graphics g) {
if (track.trackerPanel == panel) {
AutoTracker autoTracker = track.trackerPanel.getAutoTracker();
if (autoTracker.isInteracting(track)) return;
}
TrackerPanel trackerPanel = (TrackerPanel) panel;
boolean highlighted = (trackerPanel.getFrameNumber() == n);
if (trackerPanel.autoTracker != null
&& trackerPanel.autoTracker.getWizard().isVisible()
&& trackerPanel.autoTracker.getTrack() == track) {
highlighted = false;
}
getMark(trackerPanel).draw((Graphics2D) g, highlighted);
}
/**
* Finds the Interactive located at the specified pixel position.
*
* @param panel the drawing panel
* @param xpix the x pixel position
* @param ypix the y pixel position
* @return the TPoint that is hit, or null
*/
public Interactive findInteractive(DrawingPanel panel, int xpix, int ypix) {
boolean highlighted = (track.trackerPanel.getFrameNumber() == getFrameNumber());
AutoTracker autoTracker = track.trackerPanel.getAutoTracker();
TrackerPanel trackerPanel = (TrackerPanel) panel;
setHitRectCenter(xpix, ypix);
for (int i = 0; i < points.length; i++) {
if (points[i] == null || Double.isNaN(points[i].getX())) continue;
if (hitRect.contains(points[i].getScreenPosition(trackerPanel))) {
if (highlighted && autoTracker.isDrawingKeyFrameFor(track, i)) return null;
return points[i];
}
}
return null;
}
/**
* Gets the screen bounds of this step on the specified tracker panel.
*
* @param trackerPanel the tracker panel drawing the step
* @return the bounding rectangle
*/
public Rectangle getBounds(TrackerPanel trackerPanel) {
boolean highlighted = (trackerPanel.getFrameNumber() == n);
return getMark(trackerPanel).getBounds(highlighted);
}
/**
* Gets the mark for the specified panel.
*
* @param trackerPanel the tracker panel
* @return the mark
*/
protected Mark getMark(TrackerPanel trackerPanel) {
Mark mark = marks.get(trackerPanel);
TPoint selection = null;
if (mark == null) {
selection = trackerPanel.getSelectedPoint();
Point p = null;
valid = true; // assume true
for (int n = 0; n < points.length; n++) {
if (!valid) continue;
// determine if point is valid (ie not NaN)
valid = valid && !Double.isNaN(points[n].getX()) && !Double.isNaN(points[n].getY());
screenPoints[n] = points[n].getScreenPosition(trackerPanel);
if (valid && selection == points[n]) p = screenPoints[n];
}
mark = footprint.getMark(screenPoints);
if (p != null) { // point is selected, so draw selection shape
transform.setToTranslation(p.x, p.y);
int scale = FontSizer.getIntegerFactor();
if (scale > 1) {
transform.scale(scale, scale);
}
final Color color = footprint.getColor();
final Mark stepMark = mark;
final Shape selectedShape = transform.createTransformedShape(selectionShape);
mark =
new Mark() {
public void draw(Graphics2D g, boolean highlighted) {
stepMark.draw(g, false);
Paint gpaint = g.getPaint();
g.setPaint(color);
g.fill(selectedShape);
g.setPaint(gpaint);
}
public Rectangle getBounds(boolean highlighted) {
Rectangle bounds = selectedShape.getBounds();
bounds.add(stepMark.getBounds(false));
return bounds;
}
};
}
final Mark theMark = mark;
mark =
new Mark() {
public void draw(Graphics2D g, boolean highlighted) {
if (!valid) return;
theMark.draw(g, false);
}
public Rectangle getBounds(boolean highlighted) {
return theMark.getBounds(highlighted);
}
};
marks.put(trackerPanel, mark);
}
return mark;
}
/**
* Returns a String describing this step.
*
* @return a descriptive string
*/
public String toString() {
return "Step " + n; // $NON-NLS-1$
}
/**
* Clones this Step.
*
* @return a clone of this step
*/
public Object clone() {
try {
Step step = (Step) super.clone();
step.points = new TPoint[points.length];
step.screenPoints = new Point[points.length];
step.marks = new HashMap<TrackerPanel, Mark>();
return step;
} catch (CloneNotSupportedException ex) {
ex.printStackTrace();
}
return null;
}
/**
* Centers the hit testing rectangle on the specified screen point.
*
* @param xpix the x pixel position
* @param ypix the y pixel position
*/
protected void setHitRectCenter(int xpix, int ypix) {
hitRect.setLocation(xpix - hitRect.width / 2, ypix - hitRect.height / 2);
}
/**
* Gets the step length. Default length is 1.
*
* @return the length of the points array
*/
public static int getLength() {
return 1;
}
/** An inner superclass of all handles. */
class Handle extends TPoint {
/**
* Constructs a Handle with specified image coordinates.
*
* @param x the x coordinate
* @param y the y coordinate
*/
public Handle(double x, double y) {
super(x, y);
}
/**
* Sets the position of this handle on the line nearest the specified screen position.
* Subclasses must override.
*
* @param xScreen the x screen position
* @param yScreen the y screen position
* @param trackerPanel the trackerPanel drawing this step
*/
public void setPositionOnLine(int xScreen, int yScreen, TrackerPanel trackerPanel) {}
}
}
