void HexLatticeGenerator::set(const Vector2& anchor, AnchorAlignEnum align, LatticeRowEnum dir,
float width, float density, size_t tgtPopulation, float angle) {
_rowDir = dir;
setRotationDeg(angle);
float r = effectiveRadius(density);
_rowDist = rankDistance(r);
_nbrDist = 2.f * r;
// Compute the layout of the agents for quick compute
float actualWidth;
switch (dir) {
case ROW_X:
_rowPop = (size_t)(width / _nbrDist);
if (_rowPop == 0) ++_rowPop;
_rowCount = (tgtPopulation / (2 * _rowPop - 1) + 1) * 2;
_totalPop = (2 * _rowPop - 1) * (_rowCount / 2);
if (_totalPop - (_rowPop - 1) > tgtPopulation) {
_totalPop -= (_rowPop - 1);
--_rowCount;
}
actualWidth = (_rowPop - 1) * _nbrDist;
break;
case ROW_Y:
_rowCount = (int)(width / _rowDist);
if (_rowCount == 0) ++_rowCount;
_rowPop = tgtPopulation / _rowCount + 1;
_totalPop = _rowCount * _rowPop;
actualWidth = (_rowCount - 1) * _rowDist;
break;
}
// Recompute _anchor based on _anchorAlign - essentially, change the anchor point
// such that the first agent is always placed at the origin.
// This is the rotated displacement of the center/right corner to the origin
if (align == CENTER) {
_anchor = anchor - Vector2(_cosRot * actualWidth, _sinRot * actualWidth) * 0.5f;
} else if (align == RIGHT_CORNER) {
_anchor = anchor - Vector2(_cosRot * actualWidth, _sinRot * actualWidth);
} else {
// Don't need any modification for _align == LEFT
_anchor = anchor;
}
}
// event functions
//------------------------------------------------------------------------------
// onUpdateRotDeg() - update rotation (degrees)
//------------------------------------------------------------------------------
bool CompassRose::onUpdateRotDeg(const Basic::Number* const x)
{
bool ok = false;
if (x != nullptr) ok = setRotationDeg(x->getReal());
return ok;
}
