Hi all. First to thank for the great support you allways have provided me. I have modified the SelectionBox and SelectionHelper modules published in threejs in order to work with instances. The point is that if I try to use it with an orthographic camera the selection is not accurate. It works pr…

Hi! I use this library https://github.com/brianxu/GPUPicker For picking i use this code function onMouseClick(e) { e.preventDefault(); mouse.x = e.clientX; mouse.y = e.clientY; var raymouse = new THREE.Vector2(); raymouse.x = ( e.clientX / renderer.domEleme…

Hi. The problem is not the same. I am trying to create a frustum from an area selection, not just gpu picking. By the way, I recommend you to depvelop your own GPU picking instead using gpuPicker. It is really simple do it by programming a shader. Another, thing, I also recommend you using insta…

Thanks for the advice! I am new to programming, and I study the library of three js for the third week. I never worked with shaders, tried to copy the code from the examples, but quickly got confused and refused this idea. Could you give me some example code, how can I add objects through instances…

There are two different ways to face the problem of dynamic adding | removing instances from the scene. The easiest way is to set a hard limit of instances for example (100000) for each asset you will have in your scene. You can control the current instances available in the scene by changing max…

Wow! Very good documentation for me. Much thanks, good luck you too!

Hello, Alejandro_Insua! Maybe you can help me with problem? Do you know, how to intersect non indexed buffer geometry? I want to detect intersection between two defferent faces of two different non indexed buffergeometry. I set ray from each faces, but raycaster dont work with non indexed geometry.I…

Hi Arkadiy. You can convert non-indexed BufferGeometry to indexed BufferGeometry. Just add this constructor at the beginning of your code of put it into a separate file and source it. I don’t know if this helps you, tell me if not. THREE.BufferGeometry.prototype.toIndexed = function() { let pr…

Hi again! Thank you for replying! I create my non indexed geometry like this: var box = new THREE.Mesh(geometry.toNonIdexed(), material); I can just delete this function and my geometry will indexed. But in this way i have 24 count position in buffer attribute (instead 36 in non indexed) and my ra…

Indexed geometry -> [%D0%A1%D0%BD%D0%B8%D0%BC%D0%BE%D0%BA%20%D1%8D%D0%BA%D1%80%D0%B0%D0%BD%D0%B0%20(314)] Non indexed (all works ok)-> [%D0%A1%D0%BD%D0%B8%D0%BC%D0%BE%D0%BA%20%D1%8D%D0%BA%D1%80%D0%B0%D0%BD%D0%B0%20(313)]

And i have a question, what is better for perfomance. Indexed buffer geometry or non Indexed?

Selectionbox and orthographic camera

Questions

Arkadiy_Vinkovskiy June 9, 2019, 2:25pm 16

Indexed geometry ->

Non indexed (all works ok)->

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Selectionbox and orthographic camera

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