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Add Path tool support for G/R/S rotation and scaling with a single selected handle (#2180)

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* grab_scale_path and backspace for pen

* minor improvements and fixes

* code-review changes

* Avoid more nesting, and other code cleanup

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>
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0SlowPoke0 2025-01-15 14:07:02 +05:30 • committed by GitHub
parent 9ad6c31483
commit 2e4fb95dea
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6 changed files with 118 additions and 30 deletions
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14
node-graph/gcore/src/vector/vector_data.rs
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@ -306,6 +306,13 @@ impl ManipulatorPointId {
}
}
pub fn get_anchor_position(&self, vector_data: &VectorData) -> Option<DVec2> {
match self {
ManipulatorPointId::EndHandle(_) | ManipulatorPointId::PrimaryHandle(_) => self.get_anchor(vector_data).and_then(|id| vector_data.point_domain.position_from_id(id)),
_ => self.get_position(vector_data),
}
}
/// Attempt to get a pair of handles. For an anchor this is the first two handles connected. For a handle it is self and the first opposing handle.
#[must_use]
pub fn get_handle_pair(self, vector_data: &VectorData) -> Option<[HandleId; 2]> {
@ -396,6 +403,13 @@ impl HandleId {
}
}
/// Calculate the magnitude of the handle from the anchor.
pub fn length(self, vector_data: &VectorData) -> f64 {
let anchor_position = self.to_manipulator_point().get_anchor_position(vector_data).unwrap();
let handle_position = self.to_manipulator_point().get_position(vector_data);
handle_position.map(|pos| (pos - anchor_position).length()).unwrap_or(f64::MAX)
}
/// Set the handle's position relative to the anchor which is the start anchor for the primary handle and end anchor for the end handle.
#[must_use]
pub fn set_relative_position(self, relative_position: DVec2) -> VectorModificationType {