void GraphicsWindow::MakeUnselected(Selection *stog, bool coincidentPointTrick){
if(stog->IsEmpty()) return;
Selection *s;
// If an item was selected, then we just un-select it.
bool wasSelected = false;
selection.ClearTags();
for(s = selection.First(); s; s = selection.NextAfter(s)) {
if(s->Equals(stog)) {
s->tag = 1;
}
}
// If two points are coincident, then it's impossible to hover one of
// them. But make sure to deselect both, to avoid mysterious seeming
// inability to deselect if the bottom one did somehow get selected.
if(stog->entity.v && coincidentPointTrick) {
Entity *e = SK.GetEntity(stog->entity);
if(e->IsPoint()) {
Vector ep = e->PointGetNum();
for(s = selection.First(); s; s = selection.NextAfter(s)) {
if(!s->entity.v) continue;
if(s->entity.v == stog->entity.v) continue;
Entity *se = SK.GetEntity(s->entity);
if(!se->IsPoint()) continue;
if(ep.Equals(se->PointGetNum())) {
s->tag = 1;
}
}
}
}
selection.RemoveTagged();
}
void GraphicsWindow::HitTestMakeSelection(Point2d mp) {
int i;
double d, dmin = 1e12;
Selection s;
ZERO(&s);
// Always do the entities; we might be dragging something that should
// be auto-constrained, and we need the hover for that.
for(i = 0; i < SK.entity.n; i++) {
Entity *e = &(SK.entity.elem[i]);
// Don't hover whatever's being dragged.
if(e->h.request().v == pending.point.request().v) {
// The one exception is when we're creating a new cubic; we
// want to be able to hover the first point, because that's
// how we turn it into a periodic spline.
if(!e->IsPoint()) continue;
if(!e->h.isFromRequest()) continue;
Request *r = SK.GetRequest(e->h.request());
if(r->type != Request::CUBIC) continue;
if(r->extraPoints < 2) continue;
if(e->h.v != r->h.entity(1).v) continue;
}
d = e->GetDistance(mp);
if(d < 10 && d < dmin) {
memset(&s, 0, sizeof(s));
s.entity = e->h;
dmin = d;
}
}
// The constraints and faces happen only when nothing's in progress.
if(pending.operation == 0) {
// Constraints
for(i = 0; i < SK.constraint.n; i++) {
d = SK.constraint.elem[i].GetDistance(mp);
if(d < 10 && d < dmin) {
memset(&s, 0, sizeof(s));
s.constraint = SK.constraint.elem[i].h;
dmin = d;
}
}
// Faces, from the triangle mesh; these are lowest priority
if(s.constraint.v == 0 && s.entity.v == 0 && showShaded && showFaces) {
Group *g = SK.GetGroup(activeGroup);
SMesh *m = &(g->displayMesh);
uint32_t v = m->FirstIntersectionWith(mp);
if(v) {
s.entity.v = v;
}
}
}
if(!s.Equals(&hover)) {
hover = s;
InvalidateGraphics();
}
}
bool GraphicsWindow::IsSelected(Selection *st) {
Selection *s;
for(s = selection.First(); s; s = selection.NextAfter(s)) {
if(s->Equals(st)) {
return true;
}
}
return false;
}
