rotoglup

Cycles

I had crashes while scripting the CUDA devices selection (b3d v2.83 + 4x GTX 2080 GPU).

The original code was :

preferences = bpy.context.preferences
cycles_preferences = preferences.addons["cycles"].preferences
cuda_devices, opencl_devices = cycles_preferences.get_devices()

rotoglup

Conan (on Windows)

• conan search <name> -r conan-center

What I liked :

• easy install through python's pip

What I don't like :

rotoglup

* `Set-NetConnectionProfile -InterfaceAlias "Ethernet" -NetworkCategory Private`

rotoglup

Handmade Math

• v1.11, 05/2020, https://github.com/HandmadeMath/Handmade-Math
• I like the C API, and single-file distribution, but had the following problems
  • no support for matrix inverse
  • troubles building in C++ code, with gcc: error: ISO C++ prohibits anonymous structs [-Werror=pedantic]

rotoglup

A look into threejs editor

My notes while reading the source code from threejs Editor app, as I've been curious about :

• the editor architecture
• the undo/redo system
• the camera control behaviour & code
• the object transform gizmos behaviours & code

rotoglup

applyMatrix on Geometry does not flip faces when needed

applyMatrix, on Geometry or BufferGeometry, does not flip faces indices when applying a matrix that flips normals (determinant < 0).

see https://github.com/mrdoob/three.js/issues/17361

rotoglup

A look into threejs raycaster

I've been looking at the current master source code, not a specific version : github commit b3ce68b4 on sept. 2019.

The source code is located in src/core/Raycaster.js, and the doc is online.

A Raycaster instance is constructed given a ray (origin point + direction vector) and a range on this ray (near, far distances), and offers the following API :

• intersectObject( object, recursive, optionalTarget ) : Array

rotoglup

Once more, I'm struggling to wrap my head around the threejs API, here are my notes.

IMPORTANT base on threejs r114 (march 2020)

API topics covered :

• Scene and Object3D, hierarchy, transforms
• Maths, linear algebra
• DirectionalLight, as I'm currently trying to understand how to attach one of them to a Camera...

rotoglup

Based on my looking at ThreeJS r115dev source code, while trying to figure out how to customize the lighting by writing my own shader.

Materials

ThreeJS has the following Material classes :

• MeshBasicMaterial, not affected by lights
• MeshLambertMaterial: lighting is computed at each vertex, for diffuse lighting, and interpolated in gouraud like fashion

rotoglup

Once more, I'm struggling to wrap my head around the threejs API, here are my notes.

> **IMPORTANT** base on threejs `r114` (march 2020)

API topics covered :

* Scene and Object3D, hierarchy, transforms
* Maths, linear algebra
* DirectionalLight, as I'm currently trying to understand how to attach one of them to a Camera...