I was trying to use this function for a Vector2D object but I am getting ‘undefined’ error. It appears this function is described in the official Babylon documentation but is not included in the final package. Am I missing something?
Hello and welcome!
can you share some code so we can have a look?
I am trying to convert an involute gear script written for JSModeler I created years ago. I am not much of a programer but I experiment with 3d design and coding. Here is the snippet I’m working on:
// build a single 2d tooth in the 'points' array
var resolution = 10;
var points = [new BABYLON.Vector2(0,0)];
for(var i = 0; i <= resolution; i++)
{
// first side of the tooth
var angle = maxangle * i / resolution;
var tanlength = angle * baseRadius;
var radvector = BABYLON.Vector2.rotateToRef(angle, radvector);
var tanvector = radvector.normalize();
var p = radvector.times(baseRadius).plus(tanvector.times(tanlength));
points[i+1] = p;
// opposite side of the tooth
radvector = BABYLON.Vector2.fromAngle(angularToothWidthAtBase - angle, radvector);
tanvector = radvector.normalize().negate();
p = radvector.times(baseRadius).plus(tanvector.times(tanlength));
points[2 * resolution + 2 - i] = p;
}
Web inspector returns an error code that rotateToRef is not a function.
I think you need to use .rotateToRef() as a method of an existing Vector2 instance.
from = new BABYLON.Vector2()
result = new BABYLON.Vector2()
from.rotateToRef(1.57, result)
Static methods, in contrast, are capitalized in BJS.
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Tested the code. I am still getting an error code.
TypeError: from.rotateToRef is not a function. (In 'from.rotateToRef(2, result)', 'from.rotateToRef' is undefined)
Logging the object in web inspector reveals that the method does not exist.
Vector2 | Babylon.js Documentation will be helpful:
.times() is .scale()
.plus() is .add()
.fromAngle() : not sure but perhaps rotate a (1,0) vector by angle, or just .Vector2(cos(a),sin(a))
.normalize() is .normalize()
.negate() is .negate()
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In your case you may want something like:
var radvector = new BABYLON.Vector2();
var fromVector = new BABYLON.Vector2(1, 0);
fromVector.rotateToRef(angle, radvector);
I am still getting undefined error. It seems like the method should appear in the object inspector console under ‘normalize()’, but I can’t find it. I will try something else. Thanks for your help.
Ah, I noticed BJS 4.2.0 does not have it. It seems the method was introduced by v 5.0 .
Here is a basic PG:
https://playground.babylonjs.com/#9TBCWB#1
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Thank you! Do you have a link to the latest alpha release so I can plug it into my project?