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Implement bezier local_extrema function (#693)

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* Implement backend of extrema in bezier-rs

* Added extrema frontend

* Added extrema interface

* Wrapped extrema in filter function to remove points not on the curve

* Saved intermediate results while computing extrema

* Fixed extrema bug when a in cubic formula is 0

* Removed extra prints

* Fixed quadratic extrema regression

* Moved helper functions to utils file

* Fixed bug in solve linear

* Stylistic changes per review

* Sentence comments

Co-authored-by: Linda Zheng <thelindazheng@gmail.com>
Co-authored-by: Keavon Chambers <keavon@keavon.com>
This commit is contained in:
Rob Nadal
2022-07-01 23:00:51 -07:00
committed by GitHub
co-authored by Linda Zheng Keavon Chambers
parent 4775a23c17
commit 0ad6e41a59
4 changed files with 119 additions and 38 deletions
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bezier-rs/docs/interactive-docs/src/App.vue
+15 -1
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@@ -228,7 +228,7 @@ export default defineComponent({
},
{
name: "Project",
callback: (canvas: HTMLCanvasElement, bezier: WasmBezierInstance, options: Record<string, number>, mouseLocation: Point | null): void => {
callback: (canvas: HTMLCanvasElement, bezier: WasmBezierInstance, options: Record<string, number>, mouseLocation?: Point): void => {
if (mouseLocation != null) {
const context = getContextFromCanvas(canvas);
const closestPoint = JSON.parse(bezier.project(mouseLocation.x, mouseLocation.y));
@@ -236,6 +236,20 @@ export default defineComponent({
}
},
},
{
name: "Local Extrema",
callback: (canvas: HTMLCanvasElement, bezier: WasmBezierInstance): void => {
const context = getContextFromCanvas(canvas);
const dimensionColors = [COLORS.NON_INTERACTIVE.STROKE_1, COLORS.NON_INTERACTIVE.STROKE_2];
const extrema: number[][] = JSON.parse(bezier.local_extrema());
extrema.forEach((tValues, index) => {
tValues.forEach((t) => {
const point = JSON.parse(bezier.compute(t));
drawPoint(context, point, 4, dimensionColors[index]);
});
});
},
},
],
};
},