Posters - Conceitos 3D
3D concepts posters
A poster series illustrating some common 3d concepts and terms.
Personal Project 2020
D I F F R A C T I O N
Diffraction refers to various phenomena that occur when a wave encounters an obstacle or a slit. It is defined as the bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture.
R E F R A C T I O N
Refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. How much a wave is refracted is determined by the change in wave speed and the initial direction of wave propagation relative to the direction of change in speed.
A N I S O T R O P I C
Anisotropy is the quality of exhibiting properties with different values when measured along axes in different directions. Anisotropic reflections occur on a surface with microgrooves or details that run in one dominant direction.
R F L E C T I V E | R E F R A C T I V E
C A U S T I C S
In optics, caustic or caustic network is the envelope of light rays reflected or refracted by a curved surface or object, or the projection of that envelope of rays on another surface. The caustic is a curve or surface to which each of the light rays is tangent, defining a boundary of an envelope of rays as a curve of concentrated light.
S. S. S.
Subsurface scattering (SSS) is a mechanism of light transport in which light that penetrates the surface of a translucent object is scattered by interacting with the material and exits the surface at a different point. The light will generally penetrate the surface and be reflected a number of times at irregular angles inside the material before passing back out of the material at a different angle than it would have had if it had been reflected directly off the surface. Subsurface scattering is important for realistic 3D computer graphics, being necessary for the rendering of materials such as marble, skin, leaves, wax and milk. If subsurface scattering is not implemented, the material may look unnatural, like plastic or metal.
D I S P L A C E M E N T
Displacement mapping in contrast to bump or normal mapping uses a height map to cause an effect where the actual geometric position of points over the textured surface are displaced, often along the local surface normal, according to the value the texture function evaluates to at each point on the surface. It gives surfaces a great sense of depth and detail, permitting in particular self-occlusion, self-shadowing and silhouettes.
V E C T O R D I S P L A C E M E N T
Vector displacement maps can displace in directions other than the face normal, which is much more flexible. Vector displacement uses the color channels that specify a vector in a certain space to displace the vertices of the geometry in that direction and magnitude.
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Thank you.
Posters - Conceitos 3D
Serie de posters que ilustram alguns termos técnicos usados na produção de imagens 3D. Na sua maioria são propriedades me materiais e luz e definem a qualidade das várias superfícies e comportamento da luz.
