Comments (6)
I think you're talking of different types of curve-fitting here: @soswow's link is to a port of Philip J. Schneider's algorithm that tries to put as few curves as possible through a list of points with an allowed maximum error. We have this same algorithm in Paper.js too (with some added tweaks), exposed through Path#simplify()
: https://github.com/paperjs/paper.js/blob/develop/src/path/PathFitter.js
You can see the code in action here: http://paperjs.org/examples/path-simplification/
The fitting of catmull-rom splines is what we offer under Path#smooth()
: It creates a smooth path by adjusting the handles of the curves using different methods (catmull-rom being one of them), but without changing the amounts of segments / curves in a path.
Both approaches are useful in different situations, e.g. curve-fitting can be used to process the point data received from a pointing device.
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Good point, I forgot I hadn't ported Catmull-Rom to bezier.js yet.
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@Pomax just in case this might be useful https://github.com/soswow/fit-curves
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no really need (although thanks for the suggestion): they're already written up in http://pomax.github.io/bezierinfo/#catmullconv, just haven't had time to move them into bezier.js, too. https://github.com/Pomax/bezierjs/tree/gh-pages/test/autodraw makes use of the concept already, but in its own file. We're not working with rational B-splines, but plain Bezier curves, so we can just do a straight up Catmull-Rom fit and then trivially convert so that each segment uses Bezier instead of CR coordinates.
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my bad, thanks for the correction.
from bezierjs.
I think you're talking of different types of curve-fitting here: @soswow's link is to a port of Philip J. Schneider's algorithm that tries to put as few curves as possible through a list of points with an allowed maximum error. We have this same algorithm in Paper.js too (with some added tweaks), exposed through Path#simplify(): https://github.com/paperjs/paper.js/blob/develop/src/path/PathFitter.js
You can see the code in action here: http://paperjs.org/examples/path-simplification/
Simplifying is in #26
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Related Issues (20)
- Get the length of the curve at some `t` HOT 1
- _lut caching doesn't work: steps is off by one HOT 5
- Release v6.1.2 broken HOT 3
- Why get(t = 0.5) point is not the middle point of the curve? HOT 5
- Find optmal D1 - Bezier.cubicFromPoints HOT 1
- PolyBezier is not exported correct for ES Module. HOT 3
- Rational Bezier Curve Support HOT 1
- Example usage of `dist/bezier.js` HOT 4
- How to make a "strict" version of bezier.project(point)? HOT 2
- Should bezier.lineIntersects(line) work for line-line intersections? HOT 3
- intersects bug Bezier to Bezier HOT 3
- Suspicious line in `utils.compute()` HOT 2
- The intersection of the two bezier is empty HOT 9
- The intersection of two identical curves HOT 2
- Intersect line method does not always return existing intersections HOT 4
- Ability to get and estimate the centerline of a list of 3D points HOT 3
- PR for extending API to interpolate values along curve and find point on curve at distance?
- Artifact when offsetting an SVG path
- Split curves do not follow old curve. HOT 2
- Missing LICENSE file HOT 1
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