public Geo3DVec get3DVec() {
return new Geo3DVec(
kernel,
((NumberValue) x.evaluate()).getDouble(),
((NumberValue) y.evaluate()).getDouble(),
((NumberValue) z.evaluate()).getDouble());
}
/** returns all GeoElement objects in the both coordinate subtrees */
public HashSet getVariables() {
HashSet temp, varset = x.getVariables();
if (varset == null) varset = new HashSet();
temp = y.getVariables();
if (temp != null) varset.addAll(temp);
temp = z.getVariables();
if (temp != null) varset.addAll(temp);
return varset;
}
public final String toString() {
StringBuilder sb = new StringBuilder();
sb.append('(');
sb.append(x.toString());
sb.append(", ");
sb.append(y.toString());
sb.append(", ");
sb.append(z.toString());
sb.append(')');
return sb.toString();
}
/** Returns the given expression as a string in Maxima syntax. */
private String doToMaximaString(ExpressionValue ev, boolean substituteVariables) {
String MathPiperString;
if (!ev.isExpressionNode()) {
ev = new ExpressionNode(casParser.getKernel(), ev);
}
MathPiperString =
((ExpressionNode) ev).getCASstring(ExpressionNode.STRING_TYPE_MAXIMA, !substituteVariables);
return MathPiperString;
}
// 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() + "");
}
}
}
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;
}
public void resolveVariables() {
x.resolveVariables();
y.resolveVariables();
z.resolveVariables();
}
public ExpressionValue deepCopy(Kernel kernel) {
return new MyVec3DNode(kernel, x.deepCopy(kernel), y.deepCopy(kernel), z.deepCopy(kernel));
}
public boolean isConstant() {
return x.isConstant() && y.isConstant() && z.isConstant();
}
