/**
* set coords to origin O and vector (I-O). If I (or O) is infinite, I is used as direction
* vector.
*
* @param O origin point
* @param I unit point
*/
public void setCoord(GeoPointND O, GeoPointND I) {
startPoint = O;
endPoint = I;
if (I.isInfinite())
if (O.isInfinite()) setUndefined(); // TODO infinite line
else setCoord(O.getCoordsInD(3), I.getCoordsInD(3));
else if (O.isInfinite()) setCoord(I.getCoordsInD(3), O.getCoordsInD(3));
else setCoord(O.getCoordsInD(3), I.getCoordsInD(3).sub(O.getCoordsInD(3)));
}
public GgbVector evaluatePoint(double u, double v) {
GeoPointND point = (GeoPointND) getGeoElement();
double r = point.getPointSize() / getView3D().getScale() * 1.5;
GgbVector n =
new GgbVector(
new double[] {
Math.cos(u) * Math.cos(v) * r, Math.sin(u) * Math.cos(v) * r, Math.sin(v) * r
});
return (GgbVector) n.add(point.getInhomCoordsInD(3));
}
public String toString() {
// Michael Borcherds 2008-03-30
// simplified to allow better Chinese translation
return app.getPlain("CircleThroughABC", A.getLabel(), B.getLabel(), C.getLabel());
}
public void pathChanged(GeoPointND P) {
PathParameter pp = P.getPathParameter();
P.setCoords(getPoint(pp.getT()), false);
}
public void pointChanged(GeoPointND P) {
boolean done = false;
// project P on line
double t = 0;
if (((GeoElement) P).isGeoElement3D()) {
if (((GeoPoint3D) P).getWillingCoords() != null) {
if (((GeoPoint3D) P).getWillingDirection() != null) {
// project willing location using willing direction
// GgbVector[] project = coordsys.getProjection(P.getWillingCoords(),
// P.getWillingDirection());
GgbVector[] project =
((GeoPoint3D) P)
.getWillingCoords()
.projectOnLineWithDirection(
coordsys.getOrigin(),
coordsys.getVx(),
((GeoPoint3D) P).getWillingDirection());
t = project[1].get(1);
done = true;
} else {
// project current point coordinates
// Application.debug("ici\n getWillingCoords=\n"+P.getWillingCoords()+"\n
// matrix=\n"+getMatrix().toString());
GgbVector preDirection =
((GeoPoint3D) P)
.getWillingCoords()
.sub(coordsys.getOrigin())
.crossProduct(coordsys.getVx());
if (preDirection.equalsForKernel(0, Kernel.STANDARD_PRECISION))
preDirection = coordsys.getVy();
GgbVector[] project =
((GeoPoint3D) P)
.getWillingCoords()
.projectOnLineWithDirection(
coordsys.getOrigin(),
coordsys.getVx(),
preDirection.crossProduct(coordsys.getVx()));
t = project[1].get(1);
done = true;
}
}
}
if (!done) {
// project current point coordinates
// Application.debug("project current point coordinates");
GgbVector preDirection =
P.getCoordsInD(3).sub(coordsys.getOrigin()).crossProduct(coordsys.getVx());
if (preDirection.equalsForKernel(0, Kernel.STANDARD_PRECISION))
preDirection = coordsys.getVy();
GgbVector[] project =
P.getCoordsInD(3)
.projectOnLineWithDirection(
coordsys.getOrigin(),
coordsys.getVx(),
preDirection.crossProduct(coordsys.getVx()));
t = project[1].get(1);
}
if (t < getMinParameter()) t = getMinParameter();
else if (t > getMaxParameter()) t = getMaxParameter();
// set path parameter
PathParameter pp = P.getPathParameter();
pp.setT(t);
// udpate point using pathChanged
pathChanged(P);
}
public final String toString() {
return app.getPlain("LineThroughAPerpendicularToB", point.getLabel(), inputOrtho.getLabel());
}