protected Row analyzeRow(Row originalRow) {
KnittingEngine engine = renderingContext.getEngine();
// can't handle short rows
if (originalRow.isShortRow()) {
return null;
}
// can't handle colors (right now)
if (originalRow.getYarnIdRef() != null) {
return null;
}
List<InlineOperation> newOperations = new ArrayList<InlineOperation>();
Row newRow = new Row(originalRow, newOperations);
this.currentRowInfo = new RowInfo();
// Begin the row for the engine
if (dynamicFirstRowCastOn) {
// if this is an instruction definition, infer the intended shape
// from what is specified by the first row's shape.
// If nothing is specified, flat knitting is assumed.
if (originalRow.getType() != null) {
this.shape = originalRow.getType();
}
// cast on one stitch so that we can start a new row below
engine.castOn(1, false);
}
engine.startNewRow();
if (this.startingSide == null) {
this.startingSide = Side.RIGHT;
if (dynamicFirstRowCastOn && originalRow.getSide() == Side.WRONG) {
this.startingSide = Side.WRONG;
engine.knit();
engine.endRow();
engine.startNewRow();
} else if (engine.getDirection() == Direction.BACKWARDS) {
this.startingSide = Side.WRONG;
}
}
// Walk through all of the row's operations and see how it affects the
// counts
for (InlineOperation operation : originalRow.getOperations()) {
InlineOperation newOperation = handle(operation);
// if null is returned, we cannot chart, so return null up the chain
if (newOperation == null) {
return null;
}
newOperations.add(newOperation);
}
// End the row for the engine
if (dynamicFirstRowCastOn) {
// remove the "extra" stitch we created in order to start the row.
engine.reverseSlip(1);
// don't swallow the real stitch's nature
StitchNature stitchNature = engine.peekAtNextStitch().getCurrentNature();
if (stitchNature == StitchNature.PURL) {
engine.purlTwoTogether();
} else {
engine.knitTwoTogether();
}
// now pretend like all is normal
dynamicFirstRowCastOn = false;
}
engine.endRow();
// if this row pushed the bounds of the previously recorded maximum
// width, record the new max width
if (currentRowInfo.getRowWidth() > maxWidth) {
maxWidth = currentRowInfo.getRowWidth();
}
// if (!repeatInCurrentRow) {
// resetGlobalRepeatTracker();
// }
this.rowInfos.add(currentRowInfo);
return newRow;
}
