Hi, I have created the TubeBufferGeometry. The code is following: var curve = new THREE.CatmullRomCurve3( pointArray, false, "centripetal"); var geometry = new THREE.TubeBufferGeometry( curve, curveSegments, tubeRadius, radiusSegments, closed ); In the Raycaster.intersectObject(), I can get the…

[image] yancychy: How can I find the nearest point in the pointArray to the intersected point？ Something like this: // point: intersection point var nearestPoint = null; var nearestIndex = -1; var nearestDistance = Infinity; for ( var i = 0, n = pointArray.length; i ++ ) { var currPoint …

/cc [yancychy] How to get the point index in the path of TubeBufferGeometry ? (three.js) three.js, buffer-geometry asked by yancychy on 02:14AM - 21 Mar 19 UTC

[image] yancychy: Should I change the coordination of the intersected point into world vector? Hi! Intersection point is already in world coordinates. You need to convert it to the local coordinates.

Thanks yombo. Is there any relation between the faceIndex and the path points?

You’re welcome. Probably, but it will depend on the number of segments. You could infere it from the tube geometry code. If the tube is generated with constant segment length (as opposed to constant number of segments per point) then the relation will be too complex.

Thanks prisoner. I found the faceIndex at the end of path is 11000. But the count of color in the TubeBuffferGeometry is only 6925. The length of the color is 20775 = 6925*3. How can I know how many faces in the Geometry? Is it the number tubularSegments 1384 * radialSegments 4 ?

THREE.TubeBufferGeometry() is an indexed buffer geometry, so you can find the amount of faces like this: geometry.index.count / 3

Hi all, I just want to highlight the tubularSegment when move mouse on the geometry. TubeBufferGeometry(path : Curve, tubularSegments : Integer, radius : Float, radialSegments : Integer, closed : Boolean) path — Curve - A path that inherits from the Curve base class tubularSegments — Integer - Th…

How to get the point index in the path of TubeBufferGeometry when moving mouse on the TubeBufferGeometry?

Questions

prisoner849 March 21, 2019, 3:00pm 11

Are you looking for something like this?
https://jsfiddle.net/prisoner849/4bghcdew
TubularSegmentHighlight

3 Likes

How to select a part of a geometry?

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How to get the point index in the path of TubeBufferGeometry when moving mouse on the TubeBufferGeometry?

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