/** set the matrix to [V O] */
public void setCoord(GgbVector o, GgbVector v) {
coordsys.resetCoordSys();
coordsys.addPoint(o);
coordsys.addVector(v);
coordsys.makeOrthoMatrix(false);
}
public void setUndefined() {
coordsys.setUndefined();
}
public boolean isDefined() {
return coordsys.isDefined();
}
public GgbVector getLabelPosition() {
return coordsys.getPoint(0.5);
}
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);
}
/**
* returns the point at position lambda on the coord sys
*
* @param lambda
* @return the point at position lambda on the coord sys
*/
public GgbVector getPoint(double lambda) {
return coordsys.getPoint(lambda);
}