I have a problem. I want to get size of clicked polygon in my BoxBufferGeometry. I tried to find position of single vertices of clicked polygon of BufferGeometryBox then subtract the small value from the larger, it`s works, but only on three sides. Maybe because i have over 70 indexes in array, but …

Seems you already have the answer in your question. (I thought to write a bed sheet of text with explanation, but came up with the decision to write just a code example :slight_smile: ) All you have to know is parameters of your geometry and face index (and of course, you’d better know how the thi…

[image] Arkadiy_Vinkovskiy: I want to get size of clicked polygon If you elaborate on your meaning of “size” hopefully others can see clearer what you’re trying to do. Example, size of the size scale of the overall selected side (includes all co-planar faces) the size scale of just the inte…

Would be great to add an explanatory picture :slight_smile:

Ok. I have a BufferGeometryBox, by clicking on the sides of which more objects are added to the scene. I need to forbid clicking on the long side of the BufferGeometryBox.I thought to find out the size of the clicked side and after that make a check, whether it is more than a certain number, for exa…

Sorry for my google English :smile:

/cc [Arkadiy Vinkovskiy] How to get size of intersected side of bufferGeometryBox? javascript, three.js asked by Arkadiy Vinkovskiy on 06:10PM - 17 May 19 UTC

You don’t need to check the length size of the mesh, you just need check the direction face.normal is pointing to. Set a fixed axis aligned with the faces on the side you need to ignore. If the axis of the longside face.normals are the same as the raycast intersecting face, you just ignore it. oth…

Thanks for the quick response! But could you please give me an example code? i really noob in three js. I need bufferGeometryBox to remain dynamic. so that I can add new objects from its coordinates. I reset the link to my project, there is visible code in console http://alovert.ru/ it works like t…

the faces of the cube have the same index and lie on the same axes, the parameters of height, length and depth are change. after that I check the index of the faces of the beam, and add values to the loaded cube based on the coordinates of the beam and its axis

Ahah, much thanks. I fixed it using the dumb way. if(intersect.face.normal.x == 0.9999999999999999 || intersect.face.normal.x == -0.9999999999999999 || intersect.face.normal.y == 0.9999999999999999 || intersect.face.normal.y == -0.9999999999999999 || intersect.face.normal.z == 0.9999999999999999 |…

I may be a little too late but just in case it may still be of use. This uses a box geometry though. Assuming your ends will maintain the same face size during dynamic modification, this example allow you to only select the side with the smallest face size. https://jsfiddle.net/blackstrings/pmdfsr…

How to get size of intersected side of bufferGeometryBox?

Questions

Arkadiy_Vinkovskiy May 29, 2019, 2:19am 16

Wow, thank you, man, you saved my day!!!

Topic		Replies	Views
How to detect intersections of two faces of two bufferGeometryBox? Questions geometry	36	8993	June 12, 2019
Faceted box geometry Resources buffergeometry	2	2226	January 24, 2023
A strange rendering result: the rendering size using BufferGeometry is smaller than expected Questions buffergeometry	2	462	June 30, 2021
How to create bufferGeometry properly Questions normals , buffergeometry	6	3266	December 26, 2019
Raycaster: BufferGeometry with new Face3 Questions raycaster , buffergeometry	3	2408	December 13, 2017

How to get size of intersected side of bufferGeometryBox?

Related topics