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Conan (on Windows)

• conan search <name> -r conan-center

What I liked :

• easy install through python's pip

What I don't like :

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

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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]

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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

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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

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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...

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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...

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Materials

• Material slots :
  • bpy.ops.object.material_slot_add({'object':obj})
  • bpy.ops.object.material_slot_remove({'object': obj})
• Could not a find a way to get material preview images from a script, browsing the source code, they seem to be generated in an async way only in the related UI components

GLTF export

To export ambient occlusion textures, one have to use a glTF Settings node group, which can be created by script :

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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