Line3.equals()

The equals() method in Three.js is used to compare two Line3 objects and determine if they are equal in terms of position and direction.

Syntax

equals( line : Line3 ) : Boolean

• line parameter: The Line3 object to compare to.
• Return value: Returns true if the two Line3 objects are equal, and false otherwise.

Example

const line1 = new THREE.Line3(new THREE.Vector3(0, 0, 0), new THREE.Vector3(1, 1, 1));
const line2 = new THREE.Line3(new THREE.Vector3(0, 0, 0), new THREE.Vector3(1, 1, 1));
const line3 = new THREE.Line3(new THREE.Vector3(0, 0, 0), new THREE.Vector3(1, 0, 0));

console.log(line1.equals(line2)); // true
console.log(line1.equals(line3)); // false

In this example, we create three Line3 objects. line1 and line2 are identical, while line3 has a different direction. We use the equals() method to compare these objects and output the results to the console.

Notes

• The equals() method compares the positions and directions of the two Line3 objects, so objects with different segments may still be considered equal if they have the same position and direction.
• The equals() method uses floating-point comparison, so objects with extremely small differences in position or direction may still be considered equal.