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  2. Ray transfer matrix analysis - Wikipedia

    en.wikipedia.org/wiki/Ray_transfer_matrix_analysis

    The ray transfer equation thus becomes: [] = [], and this relates the parameters of the two rays as: = + = Another simple example is that of a thin lens . Its RTM is given by: L = [ 1 0 − 1 f 1 ] , {\displaystyle \mathbf {L} ={\begin{bmatrix}1&0\\-{\frac {1}{f}}&1\end{bmatrix}},} where f is the focal length of the lens.

  3. Ray tracing (graphics) - Wikipedia

    en.wikipedia.org/wiki/Ray_tracing_(graphics)

    In 3D computer graphics, ray tracing is a technique for modeling light transport for use in a wide variety of rendering algorithms for generating digital images . On a spectrum of computational cost and visual fidelity, ray tracing-based rendering techniques, such as ray casting, recursive ray tracing, distribution ray tracing, photon mapping ...

  4. Ray tracing (physics) - Wikipedia

    en.wikipedia.org/wiki/Ray_tracing_(physics)

    Ray tracing (physics) In physics, ray tracing is a method for calculating the path of waves or particles through a system with regions of varying propagation velocity, absorption characteristics, and reflecting surfaces. Under these circumstances, wavefronts may bend, change direction, or reflect off surfaces, complicating analysis.

  5. Rendering equation - Wikipedia

    en.wikipedia.org/wiki/Rendering_equation

    The rendering equation describes the total amount of light emitted from a point x along a particular viewing direction, given a function for incoming light and a BRDF.. In computer graphics, the rendering equation is an integral equation in which the equilibrium radiance leaving a point is given as the sum of emitted plus reflected radiance under a geometric optics approximation.

  6. Möller–Trumbore intersection algorithm - Wikipedia

    en.wikipedia.org/wiki/Möller–Trumbore...

    The Möller–Trumbore ray-triangle intersection algorithm, named after its inventors Tomas Möller and Ben Trumbore, is a fast method for calculating the intersection of a ray and a triangle in three dimensions without needing precomputation of the plane equation of the plane containing the triangle. [1] Among other uses, it can be used in ...

  7. Plücker coordinates - Wikipedia

    en.wikipedia.org/wiki/Plücker_coordinates

    Plücker coordinates. In geometry, Plücker coordinates, introduced by Julius Plücker in the 19th century, are a way to assign six homogeneous coordinates to each line in projective 3-space, ⁠ ⁠. Because they satisfy a quadratic constraint, they establish a one-to-one correspondence between the 4-dimensional space of lines in ⁠ ⁠ and ...

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