/**
* Snap to a coordinate in the drawing using the current snap mode.
*
* @param e A mouse event.
* @return The coordinates of the point or an invalid vector.
*/
RS_Vector RS_Snapper::snapPoint(QMouseEvent* e) {
RS_DEBUG->print("RS_Snapper::snapPoint");
snapSpot = RS_Vector(false);
RS_Vector t(false);
if (e==NULL) {
RS_DEBUG->print(RS_Debug::D_WARNING,
"RS_Snapper::snapPoint: event is NULL");
return snapSpot;
}
RS_Vector mouseCoord = graphicView->toGraph(e->x(), e->y());
double ds2Min=RS_MAXDOUBLE*RS_MAXDOUBLE;
if (snapMode.snapEndpoint) {
t = snapEndpoint(mouseCoord);
double&& ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
snapSpot = t;
}
}
if (snapMode.snapCenter) {
t = snapCenter(mouseCoord);
double&& ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
snapSpot = t;
}
}
if (snapMode.snapMiddle) {
//this is still brutal force
//todo: accept value from widget QG_SnapMiddleOptions
if(RS_DIALOGFACTORY != NULL) {
RS_DIALOGFACTORY->requestSnapMiddleOptions(middlePoints, snapMode.snapMiddle);
}
t = snapMiddle(mouseCoord);
double&& ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
snapSpot = t;
}
}
if (snapMode.snapDistance) {
//this is still brutal force
//todo: accept value from widget QG_SnapDistOptions
if(RS_DIALOGFACTORY != NULL) {
RS_DIALOGFACTORY->requestSnapDistOptions(distance, snapMode.snapDistance);
}
t = snapDist(mouseCoord);
double&& ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
snapSpot = t;
}
}
if (snapMode.snapIntersection) {
t = snapIntersection(mouseCoord);
double&& ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
snapSpot = t;
}
}
if (snapMode.snapOnEntity &&
snapSpot.distanceTo(mouseCoord) > snapMode.distance) {
t = snapOnEntity(mouseCoord);
double&& ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
snapSpot = t;
}
}
if (snapMode.snapGrid) {
t = snapGrid(mouseCoord);
double&& ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
snapSpot = t;
}
}
if( ! snapSpot.valid ) {
snapSpot=mouseCoord; //default to snapFree
} else {
// std::cout<<"mouseCoord.distanceTo(snapSpot)="<<mouseCoord.distanceTo(snapSpot)<<std::endl;
// std::cout<<"snapRange="<<snapRange<<std::endl;
//retreat to snapFree when distance is more than half grid
RS_Vector&& ds=mouseCoord - snapSpot;
RS_Vector&& grid=graphicView->getGrid()->getCellVector()*0.5;
if( fabs(ds.x) > fabs(grid.x) || fabs(ds.y) > fabs(grid.y) ) snapSpot = mouseCoord;
//another choice is to keep snapRange in GUI coordinates instead of graph coordinates
// if (mouseCoord.distanceTo(snapSpot) > snapRange ) snapSpot = mouseCoord;
}
//if (snapSpot.distanceTo(mouseCoord) > snapMode.distance) {
// handle snap restrictions that can be activated in addition
// to the ones above:
//apply restriction
RS_Vector rz = graphicView->getRelativeZero();
RS_Vector vpv(rz.x,snapSpot.y);
RS_Vector vph(snapSpot.x,rz.y);
switch (snapMode.restriction) {
case RS2::RestrictOrthogonal:
snapCoord= ( mouseCoord.distanceTo(vpv)< mouseCoord.distanceTo(vph))?
vpv:vph;
break;
case RS2::RestrictHorizontal:
snapCoord = vph;
break;
case RS2::RestrictVertical:
snapCoord = vpv;
break;
//case RS2::RestrictNothing:
default:
snapCoord = snapSpot;
break;
}
//}
//else snapCoord = snapSpot;
drawSnapper();
if (RS_DIALOGFACTORY!=NULL) {
RS_DIALOGFACTORY->updateCoordinateWidget(snapCoord,
snapCoord - graphicView->getRelativeZero());
}
RS_DEBUG->print("RS_Snapper::snapPoint: OK");
return snapCoord;
}
/**
* Snap to a coordinate in the drawing using the current snap mode.
*
* @param e A mouse event.
* @return The coordinates of the point or an invalid vector.
*/
RS_Vector RS_Snapper::snapPoint(QMouseEvent* e) {
RS_DEBUG->print("RS_Snapper::snapPoint");
pImpData->snapSpot = RS_Vector(false);
RS_Vector t(false);
if (!e) {
RS_DEBUG->print(RS_Debug::D_WARNING,
"RS_Snapper::snapPoint: event is nullptr");
return pImpData->snapSpot;
}
RS_Vector mouseCoord = graphicView->toGraph(e->x(), e->y());
double ds2Min=RS_MAXDOUBLE*RS_MAXDOUBLE;
if (snapMode.snapEndpoint) {
t = snapEndpoint(mouseCoord);
double ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
pImpData->snapSpot = t;
}
}
if (snapMode.snapCenter) {
t = snapCenter(mouseCoord);
double ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
pImpData->snapSpot = t;
}
}
if (snapMode.snapMiddle) {
//this is still brutal force
//todo: accept value from widget QG_SnapMiddleOptions
if(RS_DIALOGFACTORY ) {
RS_DIALOGFACTORY->requestSnapMiddleOptions(middlePoints, snapMode.snapMiddle);
}
t = snapMiddle(mouseCoord);
double ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
pImpData->snapSpot = t;
}
}
if (snapMode.snapDistance) {
//this is still brutal force
//todo: accept value from widget QG_SnapDistOptions
if(RS_DIALOGFACTORY ) {
RS_DIALOGFACTORY->requestSnapDistOptions(m_SnapDistance, snapMode.snapDistance);
}
t = snapDist(mouseCoord);
double ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
pImpData->snapSpot = t;
}
}
if (snapMode.snapIntersection) {
t = snapIntersection(mouseCoord);
double ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
pImpData->snapSpot = t;
}
}
if (snapMode.snapOnEntity &&
pImpData->snapSpot.distanceTo(mouseCoord) > snapMode.distance) {
t = snapOnEntity(mouseCoord);
double ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
pImpData->snapSpot = t;
}
}
if (snapMode.snapGrid) {
t = snapGrid(mouseCoord);
double ds2=mouseCoord.squaredTo(t);
if (ds2 < ds2Min){
ds2Min=ds2;
pImpData->snapSpot = t;
}
}
if( !pImpData->snapSpot.valid ) {
pImpData->snapSpot=mouseCoord; //default to snapFree
} else {
// std::cout<<"mouseCoord.distanceTo(snapSpot)="<<mouseCoord.distanceTo(snapSpot)<<std::endl;
// std::cout<<"snapRange="<<snapRange<<std::endl;
//retreat to snapFree when distance is more than half grid
if(snapMode.snapFree){
RS_Vector const& ds=mouseCoord - pImpData->snapSpot;
RS_Vector const& grid=graphicView->getGrid()->getCellVector()*0.5;
if( fabs(ds.x) > fabs(grid.x) || fabs(ds.y) > fabs(grid.y) ) pImpData->snapSpot = mouseCoord;
}
//another choice is to keep snapRange in GUI coordinates instead of graph coordinates
// if (mouseCoord.distanceTo(snapSpot) > snapRange ) snapSpot = mouseCoord;
}
//if (snapSpot.distanceTo(mouseCoord) > snapMode.distance) {
// handle snap restrictions that can be activated in addition
// to the ones above:
//apply restriction
RS_Vector rz = graphicView->getRelativeZero();
RS_Vector vpv(rz.x, pImpData->snapSpot.y);
RS_Vector vph(pImpData->snapSpot.x,rz.y);
switch (snapMode.restriction) {
case RS2::RestrictOrthogonal:
pImpData->snapCoord= ( mouseCoord.distanceTo(vpv)< mouseCoord.distanceTo(vph))?
vpv:vph;
break;
case RS2::RestrictHorizontal:
pImpData->snapCoord = vph;
break;
case RS2::RestrictVertical:
pImpData->snapCoord = vpv;
break;
//case RS2::RestrictNothing:
default:
pImpData->snapCoord = pImpData->snapSpot;
break;
}
//}
//else snapCoord = snapSpot;
snapPoint(pImpData->snapSpot, false);
//If the cursor is too-close to the snapSpot (by number of screen pixels), then hide it.
if (graphicView->toGui(pImpData->snapSpot).distanceTo(graphicView->toGui(mouseCoord)) < 32 /* xenoRadius */)
{
graphicView->setCursor(Qt::BlankCursor);
}
else
{
graphicView->setCursor(Qt::CrossCursor);
}
return pImpData->snapCoord;
}
