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bflatasticandClaude Opus 5.5
17f66003cf
Alt already deleted regions and pieces of open lines, but erase mode had
no edges of closed shapes, no distinct pointer, highlighted regions in the
merge-mode grey, only noticed Alt on a mouse move, and an erase drag could
flip mode at release. Like the reference app's erase mode:
- pathops::shape_builder(shapes, edges) returns a BuilderArrangement; with
`edges` it also cuts the outlines of closed (and filled open) paths
wherever other paths meet them. pathops::cut_out removes such a piece
from a path: a closed subpath opens there, an open one splits or
shortens, a piece all the way round takes its subpath, and a filled open
path's invisible closing edge never comes back as a visible segment.
Specks where paths only touch cut nothing; a zero-length input is no
longer the source of edges running through it. encloses_area is shared
with the tool's closing of filled open paths.
- BuilderMap (with_edges) hit-tests edges like line pieces (nearest wins);
an erase gesture that crosses an edge into a region deletes the region,
not the edge (erased_edges).
- shapeBuilder.merge {erase}: deletes the edges touched within tolerance
(from every shape along them), after the regions; returns `edges`.
shapeBuilder.regions lists `edges` (bounds, source). One undo step.
- Shape Builder tool: Alt held switches to erase mode and back on release:
red mesh/edge highlights of what will be deleted, a minus pointer
(Cursor::ShapeBuilder / ShapeBuilderErase, a plus in merge mode); a drag
keeps the mode it started in. The canvas re-hovers the tool when a
modifier changes, so the highlight follows Alt without a mouse move.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
35 lines
1.4 KiB
Rust
35 lines
1.4 KiB
Rust
//! VectorCraft path operations: booleans (Pathfinder), shape builder regions, offset, outline stroke,
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//! simplify and the other Object → Path commands.
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//!
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//! Booleans are curve-preserving: `linesweeper`'s robust sweep-line works directly on cubic
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//! Béziers, and the pieces it splits curves into are refitted afterwards so results carry few
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//! anchors. See the crate README for the API overview.
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#![forbid(unsafe_code)]
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mod boolean;
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mod edit;
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mod fit;
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mod offset;
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mod pathfinder;
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mod planar;
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pub use boolean::{BoolOp, DEFAULT_PRECISION, area, boolean, boolean_n, normalize, try_boolean, try_normalize, unite_all};
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pub use edit::{
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AverageAxis, SimplifyOptions, add_anchor_points, average, join, remove_anchor, remove_redundant_points, simplify, simplify_with, smooth,
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split_into_grid,
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};
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pub use offset::{Cap, Join, offset_path, outline_stroke, stroke_region};
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pub use pathfinder::{PathfinderOp, Region, Shape, merge_regions, pathfinder, region_at, regions};
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pub use planar::{BuilderArrangement, SHAPE_BUILDER_MAX_SEGMENTS, cut_out, encloses_area, interior_point, live_paint, shape_builder};
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/// Errors from fallible operations.
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#[derive(Clone, Copy, Debug, PartialEq, Eq, thiserror::Error)]
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pub enum PathOpsError {
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#[error("input contains NaN or infinite coordinates")]
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NonFinite,
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#[error("input path could not be closed")]
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OpenPath,
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#[error("the shapes are too degenerate to combine")]
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Degenerate,
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}
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