public final double[] getCoords() {
// check if both ExpressionNodes represent NumberValues
ExpressionValue evx = x.evaluate();
if (!evx.isNumberValue()) {
String[] str = {"NumberExpected", evx.toString()};
throw new MyParseError(kernel.getApplication(), str);
}
ExpressionValue evy = y.evaluate();
if (!evy.isNumberValue()) {
String[] str = {"NumberExpected", evy.toString()};
throw new MyParseError(kernel.getApplication(), str);
}
ExpressionValue evz = z.evaluate();
if (!evz.isNumberValue()) {
String[] str = {"NumberExpected", evz.toString()};
throw new MyParseError(kernel.getApplication(), str);
}
double[] ret = {
((NumberValue) evx).getDouble(),
((NumberValue) evy).getDouble(),
((NumberValue) evz).getDouble()
};
return ret;
}
// evaluate the current value of the arithmetic tree
protected final void compute() {
// get resulting list of ExpressionNodes
ExpressionValue evlist = root.evaluate();
MyList myList = (evlist instanceof MyList) ? (MyList) evlist : ((GeoList) evlist).getMyList();
int evalListSize = myList.size();
int cachedListSize = list.getCacheSize();
list.clear();
for (int i = 0; i < evalListSize; i++) {
ExpressionValue element = myList.getListElement(i).evaluate();
GeoElement geo = null;
// number result
if (element.isNumberValue()) {
double val = ((NumberValue) element).getDouble();
// try to use cached element of same type
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a number: set value
if (cachedGeo.isGeoNumeric()) {
((GeoNumeric) cachedGeo).setValue(val);
geo = cachedGeo;
}
}
// no cached number: create new one
if (geo == null) {
geo = new GeoNumeric(cons, val);
}
// add number to list
list.add(geo);
}
// point
else if (element.isVectorValue()) {
GeoVec2D vec = ((VectorValue) element).getVector();
// try to use cached element of same type
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a point: set value
if (cachedGeo.isGeoPoint()) {
((GeoPoint) cachedGeo).setCoords(vec);
geo = cachedGeo;
}
}
// no cached point: create new one
if (geo == null) {
GeoPoint point = new GeoPoint(cons);
point.setCoords(vec);
geo = point;
}
// add point to list
list.add(geo);
}
// needed for matrix multiplication
// eg {{1,3,5},{2,4,6}}*{{11,14},{12,15},{13,a}}
else if (element instanceof MyList) {
MyList myList2 = (MyList) element;
GeoList list2 = new GeoList(cons);
list2.clear();
/* removed Michael Borcherds 20080602
* bug: 9PointCubic.ggb (matrix multiplication)
// try to use cached element of type GeoList
GeoList list2 = null;
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a number: set value
if (cachedGeo.isGeoList()) {
list2 = (GeoList) cachedGeo;
}
}
if (list2 == null) {
list2 = new GeoList(cons);
} */
for (int j = 0; j < myList2.size(); j++) {
ExpressionValue en = myList2.getListElement(j);
ExpressionValue ev = en.evaluate();
if (ev instanceof MyDouble) {
GeoNumeric geo2 = new GeoNumeric(cons);
geo2.setValue(((NumberValue) ev).getDouble());
list2.add(geo2);
}
}
list.add(list2);
} else if (element instanceof MyStringBuffer) {
MyStringBuffer str = (MyStringBuffer) element;
// try to use cached element of same type
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a point: set value
if (cachedGeo.isGeoText()) {
((GeoText) cachedGeo).setTextString(str.toValueString());
geo = cachedGeo;
}
}
// no cached point: create new one
if (geo == null) {
GeoText text = new GeoText(cons);
text.setTextString(str.toValueString());
geo = text;
}
// add point to list
list.add(geo);
} else if (element instanceof MyBoolean) {
MyBoolean bool = (MyBoolean) element;
// try to use cached element of same type
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a point: set value
if (cachedGeo.isGeoBoolean()) {
((GeoBoolean) cachedGeo).setValue(bool.getBoolean());
geo = cachedGeo;
}
}
// no cached point: create new one
if (geo == null) {
GeoBoolean geoBool = new GeoBoolean(cons);
geoBool.setValue(bool.getBoolean());
geo = geoBool;
}
// add point to list
list.add(geo);
} else if (element instanceof GeoFunction) {
GeoFunction fun = (GeoFunction) element;
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a point: set value
if (cachedGeo.isGeoFunction()) {
((GeoFunction) cachedGeo).set(fun);
geo = cachedGeo;
}
}
// no cached point: create new one
if (geo == null) {
GeoFunction geoFun = new GeoFunction(cons);
geoFun.set(fun);
geo = geoFun;
}
list.add(geo);
} else {
Application.debug("unsupported list addition: " + element.getClass() + "");
}
}
}