Hi There. I’m trying to place a plane which I can texture at every location of a point cloud. I have PLY file with 22k vertices (no normals, faces, uv etc …very clean). I would like to add a 2D Plane pointing towards the camera at every location and then add a randomised texture from an array of 3…

In this example https://codepen.io/prisoner849/pen/OJmxGOg?editors=0010 , there is the approach I use. Lines 25-27, 32, 45 in the JS section.

Hi! [image] mac: but this wont allow me to do rotation or multiple different sprites I didn’t get, what rotation do you mean? And “multiple different sprites” is a texture atlas. In case of both points and instanced planes, you’ll need to patch the material to make it able to use the atlas. …

Hi thanks for the response, Sorry I wasn’t very clear. 1. So let’s say I have a PLY file with just vertices and no faces or anything else like this: ply format ascii 1.0 element vertex 10 property float x property float y property float z property list uchar int vertex_indices end_header -1.09624…

[image] mac: I would like to programatically set the image/sprite/texture and rotate the particles as mentioned before (maybe also set other geometric properties). Have a look at this: Rotating and scaling a shape - #5 by prisoner849 and this: Texturing THREE.Points - #2 by prisoner849

This is a huge eye opener for me. My head was stuck in OOP JS land where I thought i should be somehow extending the Points or PointsMaterial class but instead you went the other way around and did shader injection on the other end of the logic pipeline which is so much more simple and effective! I…

hmm, when I try to use the Texturing example you provided above on a new version of ThreeJS it dies with the error: three.module.js:18910 THREE.WebGLProgram: Shader Error 0 - VALIDATE_STATUS false Program Info Log: Fragment shader is not compiled. FRAGMENT ERROR: 0:161: 'mapTexelToLinear' : no …

[image] mac: diffuseColor *= mapTexelToLinear( mapTexel ); And if you try it this way: diffuseColor *= mapTexel; ?

[image] prisoner849: diffuseColor *= mapTexel; :zap: :man_dancing: you sir, are a gentleman and a scholar! Thank you again!

can I please ask a question about your ‘onBeforeCompile’ injection above: I want to inject the uTime/u_time uniform into the PointsMaterial shader but it seems to be very unhappy about doing so. From all of my past experience and the official documentation, passing uniforms are supported only by …

Using Textured Planes as particles in pointcloud

Questions

prisoner849 April 17, 2022, 7:18am 4

Have a look at this: Rotating and scaling a shape - #5 by prisoner849
and this: Texturing THREE.Points - #2 by prisoner849

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Using Textured Planes as particles in pointcloud

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