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improved line mechanics when output node is collapsed

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This commit is contained in:
itsmattkc
2019-07-17 03:15:41 -04:00
parent 9f6d0f9dc7
commit 845288f513
1 changed files with 18 additions and 6 deletions
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app/widget/nodeview/nodeviewitem.cpp
+18 -6
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@@ -301,10 +301,6 @@ void NodeViewItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
// (here we use the last one, which will usually also be the first)
NodeEdgePtr edge = param->edges().last();
// Remove old edge
NodeEdgeRemoveCommand* remove_command = new NodeEdgeRemoveCommand(edge->output(), edge->input(), node_edge_change_command_);
remove_command->redo();
// The starting position will be the OPPOSING parameter's rectangle
// Get the opposing parameter
@@ -313,8 +309,24 @@ void NodeViewItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
// Get its Node UI object
drag_source_ = NodeView::NodeToUIObject(scene(), drag_src_param_->parent());
// Get the opposing parameter's rect center
dragging_edge_start_ = drag_source_->mapToScene(drag_source_->GetParameterConnectorRect(drag_src_param_->index()).center());
// Get the opposing parameter's rect center using the line's current coordinates
// (we use the current coordinates because a complex formula is used for the line's coords if the opposing
// node is collapsed, therefore it's easier to just retrieve it from line itself)
NodeViewEdge* existing_edge_ui = NodeView::EdgeToUIObject(scene(), edge);
QLineF existing_edge_line = existing_edge_ui->line();
if (existing_edge_ui->contains(existing_edge_line.p1())) {
dragging_edge_start_ = existing_edge_line.p1();
} else {
dragging_edge_start_ = existing_edge_line.p2();
}
// Remove old edge
NodeEdgeRemoveCommand* remove_command = new NodeEdgeRemoveCommand(edge->output(),
edge->input(),
node_edge_change_command_);
remove_command->redo();
}
// Add it to the scene