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dotCooCoo
f95c4b51c9
Grouping for flattening joined every pair of objects whose 1 pt reach boxes touched, transitively, so a row or grid of opaque objects next to one see-through object became one group and was flattened with it. Now a group holds each see-through object and every object its reach touches. An object without transparency joins only where its reach touches a member and it lies above that member but below the group's topmost object, whose place the group takes, so the stacking order stays the same. In files without transparency with Clip Complex Regions on, art under a group within one image pixel of a member joins it too, with the pixel size taken from the image's actual resolution. Objects in an overlap set that includes one inside a clip group or clipping layer keep the previous grouping. The 1 pt antialiasing margin now goes around a group's art once instead of once per nested group (a stroked path's plain art is a group, so it had 2 pt). On 3,000 stroked rectangles, 60 with a drop shadow, the Flattener Preview counts 180 affected objects where it counted 3,000, and Flatten Transparency with the Medium preset makes 240 flat regions and 2 images where it made one image of the whole grid.
62 lines
3.4 KiB
Rust
62 lines
3.4 KiB
Rust
//! Object → Flatten Transparency: transparent art becomes opaque art that looks the same.
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//!
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//! The targets (`ids` or the selection) split into groups: each object with transparency with the
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//! objects it overlaps, and the objects without transparency whose stacking order with a member
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//! would change when the group takes its topmost object's place. Objects without transparency
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//! that overlap only others without it stay as they are (their type and strokes are outlined on
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//! request), as do groups without transparency. The others are
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//! cut into atomic regions: the faces of the planar arrangement of every fill, outlined stroke and
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//! clipping path in them ([`po::regions`]). The same paints cover each whole region, so its colour
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//! is exact: those paints composited as the renderer composites them ([`Composer`], blend modes by
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//! [`composite`]), with white under the finished art (or nothing with Preserve Alpha); in CMYK documents their inks
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//! composite, plane by plane ([`cmyk_planes`]), and the colour is CMYK. Each region becomes a path
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//! filled with that flat colour. Where gradients, patterns, images, opacity masks or raster
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//! effects reach there is no single colour: those regions are rendered into one image per group,
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//! clipped to them with Clip Complex Regions (else the image is a rectangle that takes in the
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//! regions it overlaps). The raster/vector balance rasterizes whole groups that split into more
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//! regions than it allows (all of them at 0). For files without transparency (PDF/X-1a, PDF/X-3)
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//! a CMYK document's images are opaque CMYK: its colours keep their inks there too.
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//!
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//! Edit → Transparency Flattener Presets: the built-in presets plus the user's, saved with the
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//! preferences ([`crate::Prefs::flattener_presets`]); a `preset` named anywhere options are taken
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//! finds both.
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//!
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//! Window → Flattener Preview: the same plan, worked out without rendering, reports what flattening
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//! the document would touch ([`FlattenReport`], `flattener.preview`).
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use std::collections::BTreeSet;
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use std::sync::Arc;
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use serde::{Deserialize, Serialize};
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use serde_json::{Value, json};
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use vectorcraft_color::blend::{cmyk_planes, composite, planes_cmyk};
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use vectorcraft_color::{BlendMode, Color, Paint};
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use vectorcraft_doc::appearance::{AppearanceItem, FillLayer};
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use vectorcraft_doc::cmyk::Inks;
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use vectorcraft_doc::{Appearance, ColorMode, Document, Effect, ImageBlob, ImageObject, Knockout, Node, NodeId, NodeKind};
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use vectorcraft_geom::{Affine, FillRule, PathData, Rect, shapes};
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use vectorcraft_pathops as po;
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use vectorcraft_render::effects;
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use super::edit::roots_of;
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use super::menucmds::{MAX_PIXELS, isolated_doc, unique_key};
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use super::pathops::{node_path, outline_strokes, outline_strokes_under, separate, shape_node};
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use super::{CommandSpec, EngineError, Result, Session, always, bad, bool_or, cmd, has_doc, str_param, targets, unique_name};
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mod analysis;
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mod apply;
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mod commands;
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mod compose;
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mod options;
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mod presets;
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mod report;
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pub(crate) use analysis::{outlined_text, see_through_images};
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pub(crate) use apply::{expand_transparent_tile_images, flatten_document, flatten_expanded, has_transparent_tile_images};
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#[cfg(test)]
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pub(crate) use apply::{with_clips_ignored, with_every_region};
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pub use commands::specs;
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pub use options::FlattenOptions;
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pub use presets::{FlattenerPreset, PRESET_EXTS, PRESET_FORMAT};
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pub use report::{FlattenReport, Highlight, Overprints, report};
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