public JPanel update(Object[] geos) {
this.geos = geos;
if (!checkGeos(geos)) return null;
tfAnimStep.removeActionListener(this);
// check if properties have same values
GeoElement temp, geo0 = (GeoElement) geos[0];
boolean equalStep = true;
boolean onlyAngles = true;
for (int i = 0; i < geos.length; i++) {
temp = (GeoElement) geos[i];
// same object visible value
if (!Kernel.isEqual(geo0.getAnimationStep(), temp.getAnimationStep())) equalStep = false;
if (!(temp.isGeoAngle())) onlyAngles = false;
}
// set trace visible checkbox
// int oldDigits = kernel.getMaximumFractionDigits();
// kernel.setMaximumFractionDigits(PropertiesDialog.TEXT_FIELD_FRACTION_DIGITS);
StringTemplate highPrecision =
StringTemplate.printDecimals(
StringType.GEOGEBRA, PropertiesDialog.TEXT_FIELD_FRACTION_DIGITS, false);
if (equalStep) {
GeoElement stepGeo = geo0.getAnimationStepObject();
if (onlyAngles && (stepGeo == null || (!stepGeo.isLabelSet() && stepGeo.isIndependent())))
tfAnimStep.setText(kernel.formatAngle(geo0.getAnimationStep(), highPrecision).toString());
else tfAnimStep.setText(stepGeo.getLabel(highPrecision));
} else tfAnimStep.setText("");
tfAnimStep.addActionListener(this);
return this;
}
private void init() {
// copy the construction
Qin = locusPoint.getAllPredecessors(); // all parents of Q
// get intersection of all children of P and all parents of Q
locusConsOrigElements = new TreeSet<ConstructionElement>();
TreeSet<Long> usedAlgoIds = new TreeSet<Long>();
Iterator<GeoElement> it = Qin.iterator();
while (it.hasNext()) {
GeoElement parent = it.next();
if (parent.isLabelSet() && parent.isChildOf(movingPoint)) {
// note: locusConsOrigElements will contain AlgoElement and GeoElement objects
Macro.addDependentElement(parent, locusConsOrigElements, usedAlgoIds);
}
}
// ensure that P and Q have labels set
// Note: we have to undo this at the end of this method !!!
boolean isLabeledP = movingPoint.isLabelSet();
if (!isLabeledP) {
movingPoint.label = movingPoint.getDefaultLabel();
movingPoint.labelSet = true;
}
boolean isLabeledQ = locusPoint.isLabelSet();
if (!isLabeledQ) {
locusPoint.label = locusPoint.getDefaultLabel();
locusPoint.labelSet = true;
}
// add moving point on line
locusConsOrigElements.add(movingPoint);
// add locus creating point and its algorithm to locusConsOrigElements
Macro.addDependentElement(locusPoint, locusConsOrigElements, usedAlgoIds);
// create macro construction
buildLocusMacroConstruction(locusConsOrigElements);
// if we used temp labels remove them again
if (!isLabeledP) movingPoint.labelSet = false;
if (!isLabeledQ) locusPoint.labelSet = false;
}