/**
* draws a circle
*
* @param center
* @param v1
* @param v2
* @param radius
*/
public void circle(GgbVector center, GgbVector v1, GgbVector v2, double radius) {
length = (float) (2 * Math.PI * radius); // TODO use integer to avoid bad dash cycle connection
int longitude = 60;
GgbVector vn1;
GgbVector vn2 = v1.crossProduct(v2);
float dt = (float) 1 / longitude;
float da = (float) (2 * Math.PI * dt);
float u = 0, v = 1;
setTextureX(0);
vn1 = (GgbVector) v1.mul(u).add(v2.mul(v));
down((GgbVector) center.add(vn1.mul(radius)), vn1, vn2);
for (int i = 1; i <= longitude; i++) {
u = (float) Math.sin(i * da);
v = (float) Math.cos(i * da);
setTextureX(i * dt);
vn1 = (GgbVector) v1.mul(u).add(v2.mul(v));
moveTo((GgbVector) center.add(vn1.mul(radius)), vn1, vn2);
}
}
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);
}