package org.geogebra.common.geogebra3D.kernel3D.algos;
import org.geogebra.common.geogebra3D.kernel3D.geos.GeoAngle3D;
import org.geogebra.common.kernel.Construction;
import org.geogebra.common.kernel.Kernel;
import org.geogebra.common.kernel.StringTemplate;
import org.geogebra.common.kernel.geos.GeoAngle;
import org.geogebra.common.kernel.geos.GeoElement;
import org.geogebra.common.kernel.kernelND.GeoDirectionND;
import org.geogebra.common.kernel.kernelND.GeoPointND;
/**
* angle for three points, oriented
*
* @author mathieu
*/
public class AlgoAnglePoints3DOrientation extends AlgoAnglePoints3D {
private GeoDirectionND orientation;
AlgoAnglePoints3DOrientation(Construction cons, String label, GeoPointND A,
GeoPointND B, GeoPointND C, GeoDirectionND orientation) {
super(cons, label, A, B, C, orientation);
}
public AlgoAnglePoints3DOrientation(Construction cons,
GeoDirectionND orientation) {
super(cons);
this.orientation = orientation;
}
@Override
protected void setInput(GeoPointND A, GeoPointND B, GeoPointND C,
GeoDirectionND orientation) {
super.setInput(A, B, C, orientation);
this.orientation = orientation;
}
@Override
protected GeoAngle newGeoAngle(Construction cons1) {
return GeoAngle3D.newAngle3DWithDefaultInterval(cons1);
}
@Override
protected void setInputOutput() {
input = new GeoElement[4];
input[0] = (GeoElement) getA();
input[1] = (GeoElement) getB();
input[2] = (GeoElement) getC();
input[3] = (GeoElement) orientation;
setOutputLength(1);
setOutput(0, getAngle());
setDependencies(); // done by AlgoElement
}
@Override
public void compute() {
super.compute();
if (orientation == kernel.getSpace()) { // no orientation with space
return;
}
if (!getAngle().isDefined() || Kernel.isZero(getAngle().getValue())) {
return;
}
checkOrientation(vn, orientation, getAngle());
}
@Override
protected void setForceNormalVector() {
vn = v1.crossProduct4(v2);
if (vn.isZero()) { // v1 and v2 are dependent
if (orientation == kernel.getSpace()) { // no orientation with space
vn = crossXorY(v1);
} else {
vn = orientation.getDirectionInD3().copyVector();
}
}
vn.normalize();
}
@Override
public String toString(StringTemplate tpl) {
return getLoc().getPlain("AngleBetweenABC", getA().getLabel(tpl),
getB().getLabel(tpl), getC().getLabel(tpl));
}
}