Hi everyone, I’m new to the three.js so I’m sorry if the question is weird or meaningless. The heading might seem weird but let me explain in a clear way. As I had a few searches on the web I come up with decal splatter which paints the model as a button clicked three.js webgl - decal splatter Gi…

If you use Raycaster to calculate intersections - the intersection result object has a face property - which in turn tells you: a) which face the ray collided with; b) vertex indices of that face.

[image] So the red dotted lines are the ones that I’m looking for? I just confused a little bit. So this model has 9561 triangles and they are called face as far as I can get ? And How am I going the find which one is clicked ? because it shows all the faces?

[image] ibrahimunal: So the red dotted lines are the ones that I’m looking for? No. You’re looking for intersects[0].face and intersects[0].faceIndex, where intersects is an array of objects, that your raycaster intersects, and [0] contains information about the closest object.

I don’t think you are looking in the right place. Can you please share the code you use to capture mouse clicks?

GitHub - spite/THREE.DecalGeometry: Decals for three.js I just git-cloned that repo and printed the decals and tried the explore what I’m looking for And intersections are provided with raycasting so I guess what I’m looking for is here but I could not find yet :no_mouth: function render() …

[image] this is what I get as I printed intersects[0] I’m looking for 3 vector3 and vertexNormals variable contains them. But they are between -1 and 1 and what I’m looking for is something like the point object which gives the positions however there is only 1 point object, not 3

You’ve been pointed to the property you have to look at. [изображение] See, what a, b, c mean: https://threejs.org/docs/index.html#api/en/core/Face3.a They contain indices of vertices in mesh.geometry.attributes.position. So, to get those vertices in THREE.Vector3() you just ineed to do: var po…

[image] I dont know why but its unable to get the pos variable. then as I remove pos I get this error [image] Also I come up with a different solution thanks to that post I applied matrixWorld to vertexNormal intersects[0].face.vertexNormals[0].applyMatrix4( intersects[0].object.matrixWorld ) …

Ok, it was my mistake with name of the method: .fromBufferAttribute(). And I’ve edited the previous post. You could have had a look in the docs on Vector3 for the correct name though :slight_smile: [image] ibrahimunal: I applied matrixWorld to vertexNormal Initially, you wanted to get coord…

[image] prisoner849: Initially, you wanted to get coordiantes of vertices, not their normals. Or did I miss something from your explanation? Yeah I guess I find’em by applying Matrix4 into vertexNormals. I dont know the background of math operations but it does not give a value between -1 and…

Getting Coordinates of wireframe coordinates while painting the model

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prisoner849 January 12, 2021, 8:26am 14

As an example: [SOLVED] Are segments in a side selectable? - #2 by prisoner849

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Getting Coordinates of wireframe coordinates while painting the model

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