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Bezier-rs: Added curve outline functions (#789)

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* Implement offset and reverse

Co-authored-by: Rob Nadal <robnadal44@gmail.com>

* Initial work on graduated outline

Co-authored-by: Rob Nadal <robnadal44@gmail.com>

* Handle linear case for graduated scale

* Added skewed outline, fixed graduated scale hourglass bug

* Removed test code

* Update comments

* Fix linting issue

* Improve comments

* Comment fixes

Co-authored-by: Hannah Li <hannahli2010@gmail.com>
Co-authored-by: Keavon Chambers <keavon@keavon.com>
This commit is contained in:
Rob Nadal
2022-11-06 21:25:00 -08:00
committed by GitHub
co-authored by Hannah Li Keavon Chambers
parent b7ed54a336
commit bb2dd5a259
6 changed files with 321 additions and 5 deletions
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website/other/bezier-rs-demos/wasm/src/svg_drawing.rs
+16
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@@ -1,3 +1,6 @@
use bezier_rs::Bezier;
use std::fmt::Write;
// SVG drawing constants
pub const SVG_OPEN_TAG: &str = r#"<svg xmlns="http://www.w3.org/2000/svg" width="200px" height="200px">"#;
pub const SVG_CLOSE_TAG: &str = "</svg>";
@@ -37,6 +40,19 @@ pub fn draw_line(start_x: f64, start_y: f64, end_x: f64, end_y: f64, stroke: &st
format!(r#"<line x1="{start_x}" y1="{start_y}" x2="{end_x}" y2="{end_y}" stroke="{stroke}" stroke-width="{stroke_width}"/>"#)
}
/// Helper function to draw a list of beziers.
pub fn draw_beziers(beziers: Vec<Bezier>, options: String) -> String {
let start_point = beziers.first().unwrap().start();
let mut svg = format!("<path d=\"M {} {}", start_point.x, start_point.y);
beziers.iter().for_each(|bezier| {
let _ = write!(svg, " {}", bezier.svg_curve_argument());
});
let _ = write!(svg, " Z\" {}/>", options);
svg
}
// Helper function to convert polar to cartesian coordinates
fn polar_to_cartesian(center_x: f64, center_y: f64, radius: f64, angle_in_rad: f64) -> [f64; 2] {
let x = center_x + radius * angle_in_rad.cos();