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Add a document method that returns a layer's bounding box (#273)

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* Add a document method that returns a layer's bounding box

* Moved `use` to the top of the file

* Add layer local bounding box method
This commit is contained in:
Simon Desloges 2021-07-15 23:18:32 -04:00 • committed by GitHub
parent 1b37e78d64
commit 6648e244a0
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2 changed files with 21 additions and 0 deletions
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10
core/document/src/document.rs
View file

@ -227,6 +227,16 @@ impl Document {
Ok(())
}
pub fn layer_axis_aligned_bounding_box(&self, path: &[LayerId]) -> Result<[DVec2; 2], DocumentError> {
let layer = self.layer(path)?;
Ok(layer.bounding_box(self.root.transform * layer.transform, layer.style))
}
pub fn layer_local_bounding_box(&self, path: &[LayerId]) -> Result<[DVec2; 2], DocumentError> {
let layer = self.layer(path)?;
Ok(layer.bounding_box(layer.transform, layer.style))
}
fn mark_as_dirty(&mut self, path: &[LayerId]) -> Result<(), DocumentError> {
let mut root = &mut self.root;
root.cache_dirty = true;

11
core/document/src/layers/mod.rs
View file

@ -6,6 +6,7 @@ pub use ellipse::Ellipse;
pub mod line;
use glam::{DMat2, DVec2};
use kurbo::BezPath;
use kurbo::Shape as KurboShape;
pub use line::Line;
pub mod rect;
@ -100,6 +101,12 @@ impl LayerDataTypes {
}
}
}
pub fn bounding_box(&self, transform: glam::DAffine2, style: style::PathStyle) -> [DVec2; 2] {
let bez_path = self.to_kurbo_path(transform, style);
let bbox = bez_path.bounding_box();
[DVec2::new(bbox.x0, bbox.y0), DVec2::new(bbox.x1, bbox.y1)]
}
}
#[derive(Serialize, Deserialize)]
@ -168,6 +175,10 @@ impl Layer {
self.data.to_kurbo_path(self.transform, self.style)
}
pub fn bounding_box(&self, transform: glam::DAffine2, style: style::PathStyle) -> [DVec2; 2] {
self.data.bounding_box(transform, style)
}
pub fn as_folder_mut(&mut self) -> Result<&mut Folder, DocumentError> {
match &mut self.data {
LayerDataTypes::Folder(f) => Ok(f),