/**
* Place ring with user provided angles.
*
* @param ring the ring to place.
* @param ringCenter center coordinates of the ring.
* @param bondLength given bond length.
* @param startAngles a map with start angles when drawing the ring.
*/
public void placeRing(
IRing ring, Point2d ringCenter, double bondLength, Map<Integer, Double> startAngles) {
double radius = this.getNativeRingRadius(ring, bondLength);
double addAngle = 2 * Math.PI / ring.getRingSize();
IAtom startAtom = ring.getFirstAtom();
Point2d p = new Point2d(ringCenter.x + radius, ringCenter.y);
startAtom.setPoint2d(p);
double startAngle = Math.PI * 0.5;
/* Different ring sizes get different start angles to have
* visually correct placement */
int ringSize = ring.getRingSize();
if (startAngles.get(ringSize) != null) startAngle = startAngles.get(ringSize);
List<IBond> bonds = ring.getConnectedBondsList(startAtom);
/*
* Store all atoms to draw in consecutive order relative to the
* chosen bond.
*/
Vector<IAtom> atomsToDraw = new Vector<IAtom>();
IAtom currentAtom = startAtom;
IBond currentBond = (IBond) bonds.get(0);
for (int i = 0; i < ring.getBondCount(); i++) {
currentBond = ring.getNextBond(currentBond, currentAtom);
currentAtom = currentBond.getConnectedAtom(currentAtom);
atomsToDraw.addElement(currentAtom);
}
atomPlacer.populatePolygonCorners(atomsToDraw, ringCenter, startAngle, addAngle, radius);
}
