ZIntCuboidFaceArray ZIntCuboidFace::cropBy(const ZIntCuboidFace &face) const
{
ZIntCuboidFaceArray faceArray;
if (hasOverlap(face)) {
if (isWithin(face)) {
return faceArray;
} else {
ZIntCuboidFace subface(getAxis(), isNormalPositive());
subface.setZ(getPlanePosition());
subface.set(getFirstCorner(),
Corner(getUpperBound(0), face.getLowerBound(1) - 1));
faceArray.appendValid(subface);
subface.set(Corner(getLowerBound(0),
imax2(getLowerBound(1), face.getLowerBound(1))),
Corner(face.getLowerBound(0) - 1, getUpperBound(1)));
faceArray.appendValid(subface);
subface.set(Corner(face.getUpperBound(0) + 1,
imax2(getLowerBound(1), face.getLowerBound(1))),
getLastCorner());
faceArray.appendValid(subface);
subface.set(Corner(imax2(getLowerBound(0), face.getLowerBound(0)),
face.getUpperBound(1) + 1),
Corner(imin2(getUpperBound(0), face.getUpperBound(0)),
getUpperBound(1)));
faceArray.appendValid(subface);
}
#if 0
else if (face.isWithin(*this)) {
ZIntCuboidFace subface(getAxis(), isNormalPositive());
secondCorner.set(getUpperBound(0), face.getLowerBound(1));
subface.set(getFirstCorner(), secondCorner);
faceArray.appendValid(subface);
subface.set(Corner(getLowerBound(0), face.getLowerBound(1)),
face.getCorner(2));
faceArray.appendValid(subface);
subface.set(Corner(getLowerBound(0), face.getUpperBound(1)),
getLastCorner());
faceArray.appendValid(subface);
} else {
}
#endif
} else {
ZIntCuboidFaceArray ZIntCuboidFace::cropBy(
const ZIntCuboidFaceArray &faceArray) const
{
ZIntCuboidFaceArray result;
result.appendValid(*this);
for (ZIntCuboidFaceArray::const_iterator iter = faceArray.begin();
iter != faceArray.end(); ++iter) {
const ZIntCuboidFace &face = *iter;
result = result.cropBy(face);
if (result.empty()) { //No need to continue on empty face
break;
}
}
return result;
}