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Bezier-rs: Add function to smoothly join bezier curves (#1037)

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* Added bezier join

* Stylistic changes per review
This commit is contained in:
Rob Nadal
2023-02-28 18:59:06 -05:00
committed by Keavon Chambers
parent 8d3daeae78
commit 8bc290fde9
3 changed files with 108 additions and 5 deletions
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website/other/bezier-rs-demos/wasm/src/bezier.rs
+40
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@@ -621,4 +621,44 @@ impl WasmBezier {
.fold(original_curve_svg, |acc, item| format!("{acc}{item}"));
wrap_svg_tag(arcs_svg)
}
pub fn join(&self, js_points: &JsValue) -> String {
let other_bezier: Bezier = match self.0.get_points().count() {
2 => {
let points: [DVec2; 2] = serde_wasm_bindgen::from_value(js_points.into()).unwrap();
Bezier::from_linear_dvec2(points[0], points[1])
}
3 => {
let points: [DVec2; 3] = serde_wasm_bindgen::from_value(js_points.into()).unwrap();
Bezier::from_quadratic_dvec2(points[0], points[1], points[2])
}
4 => {
let points: [DVec2; 4] = serde_wasm_bindgen::from_value(js_points.into()).unwrap();
Bezier::from_cubic_dvec2(points[0], points[1], points[2], points[3])
}
_ => unreachable!(),
};
let mut other_bezier_svg = String::new();
other_bezier.to_svg(
&mut other_bezier_svg,
CURVE_ATTRIBUTES.to_string().replace(BLACK, GRAY),
ANCHOR_ATTRIBUTES.to_string().replace(BLACK, GRAY),
String::new(),
String::new(),
);
let joining_bezier: Bezier = self.0.join(&other_bezier);
let mut joining_bezier_svg = String::new();
joining_bezier.to_svg(
&mut joining_bezier_svg,
CURVE_ATTRIBUTES.to_string().replace(BLACK, RED),
ANCHOR_ATTRIBUTES.to_string().replace(BLACK, RED),
String::new(),
String::new(),
);
let bezier_svg = self.get_bezier_path();
wrap_svg_tag(format!("{bezier_svg}{joining_bezier_svg}{other_bezier_svg}"))
}
}