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Article Dans Une Revue ACM Transactions on Graphics Année : 2024

3D-Layers: Bringing Layer-Based Color Editing to VR Painting

Emilie Yu
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Fanny Chevalier

Résumé

The ability to represent artworks as stacks of layers is fundamental to modern graphics design, as it allows artists to easily separate visual elements, edit them in isolation, and blend them to achieve rich visual effects. Despite their ubiquity in 2D painting software, layers have not yet made their way to VR painting, where users paint strokes directly in 3D space by gesturing a 6-degrees-of-freedom controller. But while the concept of a stack of 2D layers was inspired by real-world layers in cell animation, what should 3D layers be? We propose to define 3D-Layers as groups of 3D strokes, and we distinguish the ones that represent 3D geometry from the ones that represent color modifications of the geometry. We call the former substrate layers and the latter appearance layers. Strokes in appearance layers modify the color of the substrate strokes they intersect. Thanks to this distinction, artists can define sequences of color modifications as stacks of appearance layers, and edit each layer independently to finely control the final color of the substrate. We have integrated 3D-Layers into a VR painting application and we evaluate its flexibility and expressiveness by conducting a usability study with experienced VR artists.
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hal-04595138 , version 1 (30-05-2024)

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Emilie Yu, Fanny Chevalier, Karan Singh, Adrien Bousseau. 3D-Layers: Bringing Layer-Based Color Editing to VR Painting. ACM Transactions on Graphics, 2024, 43 (4), ⟨10.1145/3658183⟩. ⟨hal-04595138⟩
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