Additions for consideration...

[SimonClark]

Hey folks,

I've added a couple of features to my fork, and I'm wondering if they are valuable additions for anyone else:

1. Simple vagrant file. Once you've cloned the repo, "cd vagrant; vagrant up" will launch a vm, configure it with the packages needed, build the project, run the tests, build the docs, and be ready to launch. All without messing with the host machine.

2. Bezier easing:

const main = () => {
	return [
		extrudeWobble(30)
	]
}

function extrudeWobble(height) {
	var squareSlice = slice.fromPoints([[10, 10], [-10, 10], [-10, -10], [10, -10]]);

	var xCurve = math.bezier.create([1, 2, 0.4, 1]);
	var yCurve = math.bezier.create([1, 2, 0.5]);

	let wobble = extrusions.extrudeFromSlices({
			numberOfSlices: 30,
			isCapped: true,
			callback: function (progress, count, base) {
        		let newslice = slice.transform(math.mat4.fromTranslation([0, 0, height * progress]), base);
        		newslice = slice.transform(math.mat4.fromScaling([
     				xCurve.at(progress),
		        	yCurve.at(progress),  // y
		        	1  // z
		        ]), newslice);
		        return newslice
			}
		}, squareSlice);
	return wobble;
}

will produce:

[z3dev]

@simonclark Nice innovations to V2.

I think some others will be interested in the automatic VM launch, and configuration. Please consider adding a pull request to the V2 branch.

I'm also excited to see another use of the new extrude functions.

Funny... I don't remember math.bezier() There was talk about adding bezier() to the primitives, but no time. Again, please consider adding a pull request to the V2 branch.

[SimonClark]

@z3dev will do. I should get some tests around the math.bezier, as well as support for 2 and 3 dimensional beziers. Currently it is only a single dimensional bezier.

[z3dev]

@simonclark cool.

FYI, there's a bezier function as part of path2 geometry which is based on the SVG algorithm. See src/geometry/path2/appendBezier()

[SimonClark]

@z3dev said in Additions for consideration...:

@simonclark cool.

FYI, there's a bezier function as part of path2 geometry which is based on the SVG algorithm. See src/geometry/path2/appendBezier()

Thanks! I'm taking a look at this, and try to make sure the interfaces are similar.

My goal was to create something that I could use as an easing function in scaling, rotating, etc. I've also updated the algorithm to support n'th dimensions, and n'th order polynomials (control points).