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Fix: restrict setHeading() to 2D vectors and add friendly error for others #8255

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Fix: restrict setHeading() to 2D vectors and add friendly error for others #8255

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1b59ab3
fixes bug in #8215
reshma045 Nov 11, 2025
bd3cb73
fix
reshma045 Dec 31, 2025
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14 changes: 13 additions & 1 deletion src/math/p5.Vector.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2189,7 +2189,19 @@ class Vector {
*/
setHeading(a) {
if (this.isPInst) a = this._toRadians(a);
let m = this.mag();
if (this.y === undefined || (this.z !== undefined && this.z !== 0)) {
const p5inst = this.isPInst ? this._pInst : (typeof p5 !== 'undefined' ? p5 : null);
if (p5inst && p5inst._friendlyError) {
p5inst._friendlyError(
'p5.Vector.setHeading() only supports 2D vectors (z === 0). ' +
'For 3D or higher-dimensional vectors, use rotate() or another ' +
'appropriate method instead.',
'p5.Vector.setHeading'
);
}
return this;
}
const m = this.mag();
this.x = m * Math.cos(a);
this.y = m * Math.sin(a);
return this;
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