/**
* Zooms the view in a way that the given window is visible and fills the view.
* The view is updated.
*/
void RGraphicsView::zoomTo(const RBox& window, int margin) {
if (!window.isValid()) {
return;
}
saveViewport();
RVector f(RMAXDOUBLE, RMAXDOUBLE);
double w = window.getWidth();
double h = window.getHeight();
if (w<1.0e-6 && h<1.0e-6) {
return;
}
if (w>1.0e-6) {
f.x = (getWidth() - 2 * margin) / w;
}
if (h>1.0e-6) {
f.y = (getHeight() - 2 * margin) / h;
}
f.x = f.y = qMin(f.x, f.y);
if (RSettings::getLimitZoomAndScroll() && f.x < 1.0e-9) {
//f.x = f.y = 1.0;
return;
}
setFactor(f.x);
/*
RBox viewWindow = mapToView(window);
qDebug() << "viewWindow: " << viewWindow;
RVector size = viewWindow.getSize();
RVector f;
if (size.x > 1.0e-6) {
f.x = (getWidth() - 2 * margin) / size.x;
} else {
f.x = RMAXDOUBLE;
}
if (size.y > 1.0e-6) {
f.y = (getHeight() - 2 * margin) / size.y;
} else {
f.y = RMAXDOUBLE;
}
f.x = f.y = qMin(f.x, f.y);
if (f.x < 1.0e-6 || f.x == RMAXDOUBLE) {
f.x = f.y = 1.0;
}
setFactor(factor * f.x);
*/
centerToBox(window);
}
bool RGraphicsView::zoomToSelection() {
RDocument* document = getDocument();
if (document == NULL) {
return false;
}
RBox selectionBox = document->getSelectionBox();
if (selectionBox.isValid() && (selectionBox.getWidth()>RS::PointTolerance || selectionBox.getHeight()>RS::PointTolerance)) {
zoomTo(selectionBox, getMargin());
return true;
}
return false;
}
QList<RVector> RSnapTangential::snapEntity(
QSharedPointer<REntity> entity,
const RVector& point,
const RBox& queryBox,
RGraphicsView& view) {
QList<RVector> ret;
RDocumentInterface* di = view.getDocumentInterface();
if (di==NULL) {
return ret;
}
QSharedPointer<RShape> shape = entity->getClosestShape(point, queryBox.getWidth()/2, true);
if (shape.isNull()) {
return ret;
}
QSharedPointer<RCircle> circle = shape.dynamicCast<RCircle>();
if (!circle.isNull()) {
QList<RLine> lines = circle->getTangents(di->getLastPosition());
for (int i=0; i<lines.length(); i++) {
ret.append(lines[i].getEndPoint());
}
}
QSharedPointer<RArc> arc = shape.dynamicCast<RArc>();
if (!arc.isNull()) {
QList<RLine> lines = arc->getTangents(di->getLastPosition());
for (int i=0; i<lines.length(); i++) {
ret.append(lines[i].getEndPoint());
}
}
QSharedPointer<REllipse> ellipse = shape.dynamicCast<REllipse>();
if (!ellipse.isNull()) {
QList<RLine> lines = ellipse->getTangents(di->getLastPosition());
for (int i=0; i<lines.length(); i++) {
ret.append(lines[i].getEndPoint());
}
}
return ret;
}
QList<RVector> RSnapPerpendicular::snapEntity(
QSharedPointer<REntity> entity,
const RVector& point,
const RBox& queryBox,
RGraphicsView& view) {
QList<RVector> ret;
RDocumentInterface* di = view.getDocumentInterface();
if (di==NULL) {
return ret;
}
QSharedPointer<RShape> shape = entity->getClosestShape(point, queryBox.getWidth()/2, true);
if (shape.isNull()) {
return ret;
}
ret.append(shape->getClosestPointOnShape(di->getLastPosition(), false));
return ret;
}
