RVector RSnapIntersection::snap(
const RVector& position,
RGraphicsView& view,
double range) {
entityIds.clear();
RDocument* document = view.getDocument();
if (document==NULL) {
lastSnap = position;
return lastSnap;
}
if (RMath::isNaN(range)) {
int rangePixels = RSettings::getSnapRange();
range = view.mapDistanceFromView(rangePixels);
}
RBox queryBox(position, range);
QMap<REntity::Id, QSet<int> > ids =
document->queryIntersectedShapesXY(
queryBox, true /*false?*/, true, RBlock::INVALID_ID,
QList<RS::EntityType>() << RS::EntityHatch);
return snap(position, view, ids, queryBox);
}
RVector RSnapAuto::snap(const RVector& position, RGraphicsView& view, double range) {
entityIds.clear();
if (RMath::isNaN(range)) {
int rangePixels = RSettings::getSnapRange();
range = view.mapDistanceFromView(rangePixels);
}
RDocument* document = view.getDocument();
if (document==NULL) {
lastSnap = position;
return lastSnap;
}
RSnapAuto::init();
if (RMath::isNaN(range)) {
int rangePixels = RSettings::getSnapRange();
range = view.mapDistanceFromView(rangePixels);
}
// matching ids per query range:
QList<QSet<REntity::Id> > idsList;
QList<RBox> queryBoxList;
bool foundEntities = false;
for (double r=range/1.0; r<=range+RS::PointTolerance; r+=range/1.0) {
RBox queryBox(position, r);
queryBoxList.append(queryBox);
QMap<REntity::Id, QSet<int> > ids = document->queryIntersectedShapesXY(
queryBox, true, true, RBlock::INVALID_ID
// 20151027: allow snapping to hatch end points, etc:
/*, QList<RS::EntityType>() << RS::EntityHatch*/);
idsList.append(ids.keys().toSet());
if (ids.isEmpty()) {
continue;
}
foundEntities = true;
// intersection
if (intersections) {
RSnapIntersection snapIntersection;
lastSnap = snapIntersection.snap(position, view, ids, queryBox);
if (lastSnap.isValid() && lastSnap.getDistanceTo2d(position) < range) {
status = RSnap::Intersection;
entityIds = snapIntersection.getEntityIds();
return lastSnap;
}
}
lastSnap = RVector::invalid;
}
// interrupted by mouse move:
if (RMouseEvent::hasMouseMoved()) {
status = RSnap::Free;
return position;
}
// end points:
if (foundEntities && endPoints) {
for (int k=0; k<idsList.size() && k<queryBoxList.size(); k++) {
// query box and matching IDs cached from intersection snap:
RBox queryBox = queryBoxList.at(k);
QSet<REntity::Id> ids = idsList.at(k);
RSnapEnd snapEnd;
lastSnap = snapEnd.snap(position, view, ids, queryBox);
if (lastSnap.isValid() && lastSnap.getDistanceTo2d(position) < range) {
status = RSnap::Endpoint;
entityIds = snapEnd.getEntityIds();
return lastSnap;
}
}
lastSnap = RVector::invalid;
}
// middle points:
if (foundEntities && middlePoints) {
for (int k=0; k<idsList.size() && k<queryBoxList.size(); k++) {
// query box and matching IDs cached from intersection snap:
RBox queryBox = queryBoxList.at(k);
QSet<REntity::Id> ids = idsList.at(k);
RSnapMiddle snapMiddle;
lastSnap = snapMiddle.snap(position, view, ids, queryBox);
if (lastSnap.isValid() && lastSnap.getDistanceTo2d(position) < range) {
status = RSnap::Middle;
entityIds = snapMiddle.getEntityIds();
return lastSnap;
}
}
lastSnap = RVector::invalid;
}
// center points:
if (foundEntities && centerPoints) {
for (int k=0; k<idsList.size() && k<queryBoxList.size(); k++) {
// query box and matching IDs cached from intersection snap:
RBox queryBox = queryBoxList.at(k);
QSet<REntity::Id> ids = idsList.at(k);
RSnapCenter snapCenter;
lastSnap = snapCenter.snap(position, view, ids, queryBox);
if (lastSnap.isValid() && lastSnap.getDistanceTo2d(position) < range) {
status = RSnap::Center;
entityIds = snapCenter.getEntityIds();
return lastSnap;
}
}
lastSnap = RVector::invalid;
}
// perpendicular:
if (foundEntities && perpendicular) {
for (int k=0; k<idsList.size() && k<queryBoxList.size(); k++) {
// query box and matching IDs cached from intersection snap:
RBox queryBox = queryBoxList.at(k);
QSet<REntity::Id> ids = idsList.at(k);
RSnapPerpendicular snapPerpendicular;
lastSnap = snapPerpendicular.snap(position, view, ids, queryBox);
if (lastSnap.isValid() && lastSnap.getDistanceTo2d(position) < range) {
status = RSnap::Perpendicular;
entityIds = snapPerpendicular.getEntityIds();
return lastSnap;
}
}
lastSnap = RVector::invalid;
}
// reference points:
if (foundEntities && referencePoints) {
for (int k=0; k<idsList.size() && k<queryBoxList.size(); k++) {
// query box and matching IDs cached from intersection snap:
RBox queryBox = queryBoxList.at(k);
QSet<REntity::Id> ids = idsList.at(k);
RSnapReference snapReference;
lastSnap = snapReference.snap(position, view, ids, queryBox);
if (lastSnap.isValid() && lastSnap.getDistanceTo2d(position) < range) {
status = RSnap::Reference;
entityIds = snapReference.getEntityIds();
return lastSnap;
}
}
lastSnap = RVector::invalid;
}
// grid points:
if (gridPoints) {
RSnapGrid snapGrid;
lastSnap = snapGrid.snap(position, view, range);
if (lastSnap.isValid() && lastSnap.getDistanceTo2d(position) < range) {
status = RSnap::Grid;
return lastSnap;
}
lastSnap = RVector::invalid;
}
// on entity snap is slow and almost never used:
if (foundEntities && pointsOnEntity) {
for (int k=0; k<idsList.size() && k<queryBoxList.size(); k++) {
// query box and matching IDs cached from intersection snap:
RBox queryBox = queryBoxList.at(k);
QSet<REntity::Id> ids = idsList.at(k);
// on entity
RSnapOnEntity snapOnEntity;
lastSnap = snapOnEntity.snap(position, view, ids, queryBox);
if (lastSnap.isValid() && lastSnap.getDistanceTo2d(position) < range) {
status = RSnap::OnEntity;
entityIds = snapOnEntity.getEntityIds();
return lastSnap;
}
}
lastSnap = RVector::invalid;
}
// free:
if (freePositioning) {
lastSnap = position;
status = RSnap::Free;
return lastSnap;
}
return RVector::invalid;
}
