/**
* Updates all coordinates
*
* @todo Optimise. Some info can be cached
* @todo Handle m:n (leftY/rightY etc)
*/
public void update() {
/*
* int leftY = _leftTable.getY() + _leftTable.getColumnY(_leftRole.getColumnMap().getPrimaryKey());
* int rightY;
* if (!_leftRole.getRelation().isMany2Many()) {
* rightY = _rightTable.getY() + _rightTable.getColumnY(_leftRole.getColumnMap().getForeignKey());
* }
* else {
* rightY = _rightTable.getY() + _rightTable.getColumnY(_rightRole.getColumnMap().getPrimaryKey());
* }
*/
int leftY = _leftTable.getY() + _leftColumnY;
int rightY = _rightTable.getY() + _rightColumnY;
// find out which table is farthest west (and east)
JTablePanel westTable;
JTablePanel eastTable;
int westY;
int eastY;
Line2D.Float[] westLines;
Line2D.Float[] eastLines;
int[] westEdgeY;
int[] eastEdgeY;
_leftIsWest = _leftTable.getX() < _rightTable.getX();
if (_leftIsWest) {
westTable = _leftTable;
eastTable = _rightTable;
westY = leftY;
eastY = rightY;
westLines = _leftLines;
eastLines = _rightLines;
westEdgeY = _leftEdgeY;
eastEdgeY = _rightEdgeY;
} else {
westTable = _rightTable;
eastTable = _leftTable;
westY = rightY;
eastY = leftY;
westLines = _rightLines;
eastLines = _leftLines;
westEdgeY = _rightEdgeY;
eastEdgeY = _leftEdgeY;
}
// find out whether the tables are more or less vertically aligned
boolean aligned = (eastTable.getX() - westTable.getX()) < eastTable.getWidth() / 2;
// TODO: handle different widths
int westX;
if (aligned) {
westX = westTable.getX() - 10;
for (int i = 0; i < westEdgeY.length; i++) {
westLines[i].setLine(westX, westY, westTable.getX(), westEdgeY[i] + westTable.getY());
}
} else {
westX = westTable.getX() + westTable.getWidth() + 10;
for (int i = 0; i < westEdgeY.length; i++) {
westLines[i].setLine(
westX, westY, westTable.getX() + westTable.getWidth(), westEdgeY[i] + westTable.getY());
}
}
int eastX = eastTable.getX() - 10;
for (int i = 0; i < eastEdgeY.length; i++) {
eastLines[i].setLine(eastX, eastY, eastTable.getX(), eastEdgeY[i] + eastTable.getY());
}
_mainLine.setLine(westX, westY, eastX, eastY);
setCardinalityPoints();
}
/**
* Sets the CardinalityPoints attribute of the RelationLine object
*
* @todo refactor this duplicate code!!!
*/
private void setCardinalityPoints() {
// compute vector of length 1
_mainLength =
Point2D.distance(
_mainLine.getX1(), _mainLine.getY1(), _mainLine.getX2(), _mainLine.getY2());
double vx = (_mainLine.getX2() - _mainLine.getX1()) / _mainLength;
double vy = (_mainLine.getY2() - _mainLine.getY1()) / _mainLength;
double cardx = 20.0 * vx;
double cardy = 20.0 * vy;
double arrowx = 30.0 * vx;
double arrowy = 30.0 * vy;
if (_leftIsWest) {
_leftArrowPoint.setLocation(_mainLine.getX1() + cardx, _mainLine.getY1() + cardy);
_rightArrowPoint.setLocation(_mainLine.getX2() - cardx, _mainLine.getY2() - cardy);
// The left-side arrow head
_temp.setLocation(_mainLine.getX1() + arrowx, _mainLine.getY1() + arrowy);
_arrowTransform.setToRotation(Math.PI / 6, _leftArrowPoint.getX(), _leftArrowPoint.getY());
_arrowTransform.transform(_temp, _leftArrowPoint1);
_leftArrowLine1.setLine(
_leftArrowPoint.getX(),
_leftArrowPoint.getY(),
_leftArrowPoint1.getX(),
_leftArrowPoint1.getY());
_arrowTransform.setToRotation(-Math.PI / 6, _leftArrowPoint.getX(), _leftArrowPoint.getY());
_arrowTransform.transform(_temp, _leftArrowPoint2);
_leftArrowLine2.setLine(
_leftArrowPoint.getX(),
_leftArrowPoint.getY(),
_leftArrowPoint2.getX(),
_leftArrowPoint2.getY());
_arrowTransform.setToRotation(Math.PI / 2, _leftArrowPoint.getX(), _leftArrowPoint.getY());
_arrowTransform.transform(_temp, _leftCardinalityPoint);
_arrowTransform.setToRotation(-Math.PI / 2, _leftArrowPoint.getX(), _leftArrowPoint.getY());
_arrowTransform.transform(_temp, _leftFkPoint);
// The right-side arrow head
_temp.setLocation(_mainLine.getX2() - arrowx, _mainLine.getY2() - arrowy);
_arrowTransform.setToRotation(Math.PI / 6, _rightArrowPoint.getX(), _rightArrowPoint.getY());
_arrowTransform.transform(_temp, _rightArrowPoint1);
_rightArrowLine1.setLine(
_rightArrowPoint.getX(),
_rightArrowPoint.getY(),
_rightArrowPoint1.getX(),
_rightArrowPoint1.getY());
_arrowTransform.setToRotation(-Math.PI / 6, _rightArrowPoint.getX(), _rightArrowPoint.getY());
_arrowTransform.transform(_temp, _rightArrowPoint2);
_rightArrowLine2.setLine(
_rightArrowPoint.getX(),
_rightArrowPoint.getY(),
_rightArrowPoint2.getX(),
_rightArrowPoint2.getY());
_arrowTransform.setToRotation(-Math.PI / 2, _rightArrowPoint.getX(), _rightArrowPoint.getY());
_arrowTransform.transform(_temp, _rightCardinalityPoint);
_arrowTransform.setToRotation(Math.PI / 2, _rightArrowPoint.getX(), _rightArrowPoint.getY());
_arrowTransform.transform(_temp, _rightFkPoint);
} else {
_leftArrowPoint.setLocation(_mainLine.getX2() - cardx, _mainLine.getY2() - cardy);
_rightArrowPoint.setLocation(_mainLine.getX1() + cardx, _mainLine.getY1() + cardy);
// The left-side arrow head
_temp.setLocation(_mainLine.getX2() - arrowx, _mainLine.getY2() - arrowy);
_arrowTransform.setToRotation(Math.PI / 6, _leftArrowPoint.getX(), _leftArrowPoint.getY());
_arrowTransform.transform(_temp, _leftArrowPoint1);
_leftArrowLine1.setLine(
_leftArrowPoint.getX(),
_leftArrowPoint.getY(),
_leftArrowPoint1.getX(),
_leftArrowPoint1.getY());
_arrowTransform.setToRotation(-Math.PI / 6, _leftArrowPoint.getX(), _leftArrowPoint.getY());
_arrowTransform.transform(_temp, _leftArrowPoint2);
_leftArrowLine2.setLine(
_leftArrowPoint.getX(),
_leftArrowPoint.getY(),
_leftArrowPoint2.getX(),
_leftArrowPoint2.getY());
_arrowTransform.setToRotation(Math.PI / 2, _leftArrowPoint.getX(), _leftArrowPoint.getY());
_arrowTransform.transform(_temp, _leftCardinalityPoint);
_arrowTransform.setToRotation(-Math.PI / 2, _leftArrowPoint.getX(), _leftArrowPoint.getY());
_arrowTransform.transform(_temp, _leftFkPoint);
// The right-side arrow head
_temp.setLocation(_mainLine.getX1() + arrowx, _mainLine.getY1() + arrowy);
_arrowTransform.setToRotation(Math.PI / 6, _rightArrowPoint.getX(), _rightArrowPoint.getY());
_arrowTransform.transform(_temp, _rightArrowPoint1);
_rightArrowLine1.setLine(
_rightArrowPoint.getX(),
_rightArrowPoint.getY(),
_rightArrowPoint1.getX(),
_rightArrowPoint1.getY());
_arrowTransform.setToRotation(-Math.PI / 6, _rightArrowPoint.getX(), _rightArrowPoint.getY());
_arrowTransform.transform(_temp, _rightArrowPoint2);
_rightArrowLine2.setLine(
_rightArrowPoint.getX(),
_rightArrowPoint.getY(),
_rightArrowPoint2.getX(),
_rightArrowPoint2.getY());
_arrowTransform.setToRotation(-Math.PI / 2, _rightArrowPoint.getX(), _rightArrowPoint.getY());
_arrowTransform.transform(_temp, _rightCardinalityPoint);
_arrowTransform.setToRotation(Math.PI / 2, _rightArrowPoint.getX(), _rightArrowPoint.getY());
_arrowTransform.transform(_temp, _rightFkPoint);
}
}
public void line(float x1, float y1, float x2, float y2) {
line.setLine(x1, y1, x2, y2);
strokeShape(line);
}
