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Bezier-rs: Added function to find intersections between a bezier and a rectangle (#897)

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* added function to find intersections for a rectangle

* Added is_contained_within function
This commit is contained in:
Rob Nadal
2022-12-21 14:44:11 -08:00
committed by Keavon Chambers
parent 951c49a979
commit ef99c91226
3 changed files with 54 additions and 0 deletions
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8
website/other/bezier-rs-demos/src/App.vue
View File

@@ -554,6 +554,14 @@ export default defineComponent({
},
},
},
{
name: "Intersect (Rectangle)",
callback: (bezier: WasmBezierInstance): string =>
bezier.intersect_rectangle([
[50, 50],
[150, 150],
]),
},
{
name: "Rotate",
callback: (bezier: WasmBezierInstance, options: Record<string, number>): string => bezier.rotate(options.angle * Math.PI, 100, 100),

27
website/other/bezier-rs-demos/wasm/src/bezier.rs
View File

@@ -477,6 +477,33 @@ impl WasmBezier {
wrap_svg_tag(intersect_self_svg)
}
pub fn intersect_rectangle(&self, js_points: &JsValue) -> String {
let points: [DVec2; 2] = js_points.into_serde().unwrap();
let bezier_curve_svg = self.get_bezier_path();
let mut rectangle_svg = String::new();
[
Bezier::from_linear_coordinates(points[0].x, points[0].y, points[1].x, points[0].y),
Bezier::from_linear_coordinates(points[1].x, points[0].y, points[1].x, points[1].y),
Bezier::from_linear_coordinates(points[1].x, points[1].y, points[0].x, points[1].y),
Bezier::from_linear_coordinates(points[0].x, points[1].y, points[0].x, points[0].y),
]
.iter()
.for_each(|line| line.to_svg(&mut rectangle_svg, CURVE_ATTRIBUTES.to_string().replace(BLACK, RED), String::new(), String::new(), String::new()));
let intersections_svg = self
.0
.rectangle_intersections(points[0], points[1])
.iter()
.map(|intersection_t| {
let point = &self.0.evaluate(ComputeType::Parametric(*intersection_t));
draw_circle(*point, 4., RED, 1.5, WHITE)
})
.fold(String::new(), |acc, item| format!("{acc}{item}"));
wrap_svg_tag(format!("{bezier_curve_svg}{rectangle_svg}{intersections_svg}"))
}
pub fn reduce(&self) -> String {
let original_curve_svg = self.get_bezier_path();
let bezier_curves_svg: String = self