In this tutorial, the idea is to verify if render software properly simulate colour mixing. For that, we will use, when possible, IES files in order to mimic as much as possible real phenomena. It extends and refreshes the previous tutorial on the same topic: http://www.keris-studio.fr/blog/?p=5475
Colour mixing refers to Grassmann’s laws (https://en.wikipedia.org/wiki/Grassmann%27s_laws_(color_science)). In colorimetry, Grassmann’s laws govern the superposition of colours. They serve as the foundation for all colorimetric calculations. Hermann Grassmann’s 19th-century studies of human colour perception led him to formulate three laws in his 1853 article « On the Theory of Colour Mixing. » (Grassmann, H. (1853). « Zur Theorie der Farbenmischung »). Continuer la lecture de Light Simulation RGB additive with IES →
Spatial offers several possibilities for High end real time online rendering. Let’s see how to prepare our 3D files to get the best of it. As it is trans software, we will use at least 4 of them in parallel to get the same results. Let’s remember, it’s not the software but the workflow that is taken into account.
We will start from this tutorial on the Spatial web page that helped us to start. https://support.spatial.io/hc/en-us/articles/4418819002004
Basic geometry to start.
Let’s set up a basic scene for our tests : a wall, a floor, a cube, sphere, and Nefertiti (why not) downloaded here : https://www.openculture.com/2019/11/download-stunning-3d-scans-of-the-bust-of-nefertiti.html
Continuer la lecture de Spatial.Io Texture settings →
With this tiny tuto, we will compare 4 automatic retopology methods with Meshlab, Instant Meshes, Rhino and 3DsMax 2023. Meshlab and Instant Meshes are Free, Rhino, not too expensive and Max…well…it’s pro software. There are many other solutions, they will be compared later.
For this test, I’ll use the Nefertiti bust which can be found here: https://www.openculture.com/2019/11/download-stunning-3d-scans-of-the-bust-of-nefertiti.html or here https://sketchfab.com/3d-models/nefertiti-c2f7a55a51fa495eb1d284c0fb8fdcee
Remember that Retopology is not simple decimation, it’s really a way to reorganize the mesh to make it work better for further use.
The file is 6.421.620 polygones. Continuer la lecture de Easy Retopology →