Simulating Wax Crayons

We present a physically-inspired model of wax crayons, which synthesizes drawings from collections of userspecified strokes. Paper is represented by a height-field texture, and a crayon is modelled with a 2D mask that evolves as it interacts with the paper. The amount of wax deposition is computed based on the crayon contact profile, contact force, and friction. Previously deposited wax is smeared by crayon action, based on wax softness and contact information. The distributed wax is rendered using a simplified Kubelka-Monk model, which approximates light transmittance and scattering effects.

• Type: Conference
• Year: 2003
• Where: PG
• Authors: Dave Rudolf, David Mould, Eric Neufeld
• Keywords: Crayon, Crayon Contact Profile, PG 2003, Wax Crayons