private GeoElement[] processParametric(Parametric par) throws CircularDefinitionException {
/*
ExpressionValue temp = P.evaluate();
if (!temp.isVectorValue()) {
String [] str = { "VectorExpected", temp.toString() };
throw new MyParseError(kernel.getApplication(), str);
}
v.resolveVariables();
temp = v.evaluate();
if (!(temp instanceof VectorValue)) {
String [] str = { "VectorExpected", temp.toString() };
throw new MyParseError(kernel.getApplication(), str);
} */
// point and vector are created silently
boolean oldMacroMode = cons.isSuppressLabelsActive();
cons.setSuppressLabelCreation(true);
// get point
ExpressionNode node = par.getP();
node.setForcePoint();
GeoElement[] temp = processExpressionNode(node);
GeoPoint P = (GeoPoint) temp[0];
// get vector
node = par.getv();
node.setForceVector();
temp = processExpressionNode(node);
GeoVector v = (GeoVector) temp[0];
// switch back to old mode
cons.setSuppressLabelCreation(oldMacroMode);
// Line through P with direction v
GeoLine line;
// independent line
if (P.isConstant() && v.isConstant()) {
line = new GeoLine(cons);
line.setCoords(-v.y, v.x, v.y * P.inhomX - v.x * P.inhomY);
}
// dependent line
else {
line = kernel.Line(par.getLabel(), P, v);
}
line.setToParametric(par.getParameter());
line.updateRepaint();
GeoElement[] ret = {line};
return ret;
}
protected GeoElement[] processLine(Equation equ, boolean inequality) {
double a = 0, b = 0, c = 0;
GeoLine line;
GeoElement[] ret = new GeoElement[1];
String label = equ.getLabel();
Polynomial lhs = equ.getNormalForm();
boolean isExplicit = equ.isExplicit("y");
boolean isIndependent = lhs.isConstant();
if (isIndependent) {
// get coefficients
a = lhs.getCoeffValue("x");
b = lhs.getCoeffValue("y");
c = lhs.getCoeffValue("");
line = kernel.Line(label, a, b, c);
} else line = kernel.DependentLine(label, equ);
if (isExplicit) {
line.setToExplicit();
line.updateRepaint();
}
ret[0] = line;
return ret;
}
