Refactor `geom` module

3 files changed, 23 insertions, 27 deletions

diff --git a/src/export/pdf/mod.rs b/src/export/pdf/mod.rs
index 2f6f255d..5f47043e 100644
--- a/src/export/pdf/mod.rs
+++ b/src/export/pdf/mod.rs
@@ -16,7 +16,7 @@ use self::outline::{Heading, HeadingNode};
 use self::page::Page;
 use crate::font::Font;
 use crate::frame::{Frame, Lang};
-use crate::geom::{Dir, Em, Length};
+use crate::geom::{Abs, Dir, Em};
 use crate::image::Image;
 
 /// Export a collection of frames into a PDF file.
@@ -182,13 +182,13 @@ where
     }
 }
 
-/// Additional methods for [`Length`].
-trait LengthExt {
-    /// Convert an em length to a number of points.
+/// Additional methods for [`Abs`].
+trait AbsExt {
+    /// Convert an to a number of points.
     fn to_f32(self) -> f32;
 }
 
-impl LengthExt for Length {
+impl AbsExt for Abs {
     fn to_f32(self) -> f32 {
         self.to_pt() as f32
     }
diff --git a/src/export/pdf/outline.rs b/src/export/pdf/outline.rs
index f5530f86..73dd9e96 100644
--- a/src/export/pdf/outline.rs
+++ b/src/export/pdf/outline.rs
@@ -1,7 +1,7 @@
 use pdf_writer::{Finish, Ref, TextStr};
 
-use super::{LengthExt, PdfContext, RefExt};
-use crate::geom::{Length, Point};
+use super::{AbsExt, PdfContext, RefExt};
+use crate::geom::{Abs, Point};
 use crate::util::EcoString;
 
 /// A heading that can later be linked in the outline panel.
@@ -77,7 +77,7 @@ pub fn write_outline_item(
     outline.title(TextStr(&node.heading.content));
     outline.dest_direct().page(node.heading.page).xyz(
         node.heading.position.x.to_f32(),
-        (node.heading.position.y + Length::pt(3.0)).to_f32(),
+        (node.heading.position.y + Abs::pt(3.0)).to_f32(),
         None,
     );
 
diff --git a/src/export/pdf/page.rs b/src/export/pdf/page.rs
index 1b1bec92..7fbf7833 100644
--- a/src/export/pdf/page.rs
+++ b/src/export/pdf/page.rs
@@ -3,12 +3,12 @@ use pdf_writer::writers::ColorSpace;
 use pdf_writer::{Content, Filter, Finish, Name, Rect, Ref, Str};
 
 use super::{
-    deflate, EmExt, Heading, HeadingNode, LengthExt, PdfContext, RefExt, D65_GRAY, SRGB,
+    deflate, AbsExt, EmExt, Heading, HeadingNode, PdfContext, RefExt, D65_GRAY, SRGB,
 };
 use crate::font::Font;
 use crate::frame::{Destination, Element, Frame, Group, Role, Text};
 use crate::geom::{
-    self, Color, Em, Geometry, Length, Numeric, Paint, Point, Ratio, Shape, Size, Stroke,
+    self, Abs, Color, Em, Geometry, Numeric, Paint, Point, Ratio, Shape, Size, Stroke,
     Transform,
 };
 use crate::image::Image;
@@ -45,7 +45,7 @@ pub fn construct_page(ctx: &mut PdfContext, frame: &Frame) {
         ky: Ratio::zero(),
         kx: Ratio::zero(),
         sy: Ratio::new(-1.0),
-        tx: Length::zero(),
+        tx: Abs::zero(),
         ty: size.y,
     });
 
@@ -169,7 +169,7 @@ struct PageContext<'a> {
 #[derive(Debug, Default, Clone)]
 struct State {
     transform: Transform,
-    font: Option<(Font, Length)>,
+    font: Option<(Font, Abs)>,
     fill: Option<Paint>,
     fill_space: Option<Name<'static>>,
     stroke: Option<Stroke>,
@@ -200,7 +200,7 @@ impl<'a> PageContext<'a> {
         ]);
     }
 
-    fn set_font(&mut self, font: &Font, size: Length) {
+    fn set_font(&mut self, font: &Font, size: Abs) {
         if self.state.font.as_ref().map(|(f, s)| (f, *s)) != Some((font, size)) {
             self.parent.font_map.insert(font.clone());
             let name = format_eco!("F{}", self.parent.font_map.map(font.clone()));
@@ -402,6 +402,12 @@ fn write_shape(ctx: &mut PageContext, x: f32, y: f32, shape: &Shape) {
     }
 
     match shape.geometry {
+        Geometry::Line(target) => {
+            let dx = target.x.to_f32();
+            let dy = target.y.to_f32();
+            ctx.content.move_to(x, y);
+            ctx.content.line_to(x + dx, y + dy);
+        }
         Geometry::Rect(size) => {
             let w = size.x.to_f32();
             let h = size.y.to_f32();
@@ -409,16 +415,6 @@ fn write_shape(ctx: &mut PageContext, x: f32, y: f32, shape: &Shape) {
                 ctx.content.rect(x, y, w, h);
             }
         }
-        Geometry::Ellipse(size) => {
-            let approx = geom::Path::ellipse(size);
-            write_path(ctx, x, y, &approx);
-        }
-        Geometry::Line(target) => {
-            let dx = target.x.to_f32();
-            let dy = target.y.to_f32();
-            ctx.content.move_to(x, y);
-            ctx.content.line_to(x + dx, y + dy);
-        }
         Geometry::Path(ref path) => {
             write_path(ctx, x, y, path);
         }
@@ -469,10 +465,10 @@ fn write_image(ctx: &mut PageContext, x: f32, y: f32, image: &Image, size: Size)
 
 /// Save a link for later writing in the annotations dictionary.
 fn write_link(ctx: &mut PageContext, pos: Point, dest: &Destination, size: Size) {
-    let mut min_x = Length::inf();
-    let mut min_y = Length::inf();
-    let mut max_x = -Length::inf();
-    let mut max_y = -Length::inf();
+    let mut min_x = Abs::inf();
+    let mut min_y = Abs::inf();
+    let mut max_x = -Abs::inf();
+    let mut max_y = -Abs::inf();
 
     // Compute the bounding box of the transformed link.
     for point in [