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Ray tracing primitives - University of Cambridge
https://www.cl.cam.ac.uk/teaching/1999/AGraphHCI/SMAG/node2.html
Ray Tracing - Primitives - reindernijhoff.net
https://reindernijhoff.net/2019/06/ray-tracing-primitives/
Ray Tracing – Primitives. I created a reference shader with ray-primitive intersection routines on Shadertoy. A simple path tracer is used to visualize the scene. Use your mouse to change the camera viewpoint. I wanted to create a reference shader similar to “ Raymarching – Primitives “, but with ray-primitive intersection routines instead of SDF routines.
2A) Ray tracing primitives - University of Cambridge
https://www.cl.cam.ac.uk/teaching/2000/AGraphHCI/AG/p2a.html
Most ray tracers will have a variety of primitives. They are limited only by the ability of the programmer to write a function to analytically intersect a ray with the surface of the shape. Common primitives Plane The infinite plane is a simple object with which to intersect a ray (see Part I B notes for details).
Ray Tracing | NVIDIA Developer
https://developer.nvidia.com/discover/ray-tracing
Ray casting is the process in a ray tracing algorithm that shoots one or more rays from the camera (eye position) through each pixel in an image plane, and then tests to see if the rays intersect any primitives (triangles) in the scene. If a ray passing through a pixel and out into the 3D scene hits a primitive, then the distance along the ray from the origin (camera or eye point) …
Ray Tracing Generalized Tube Primitives: Method and Applications
https://www.willusher.io/publications/tubes
Such tube primitives are widely used in scientific visualization to represent diffusion tensor imaging tractographies, neuron morphologies, and scalar or vector fields of 3D flow. We implement our approach within the OSPRay ray tracing framework, and evaluate it on a range of interactive visualization use cases of fixed- and varying-radius streamlines, pathlines, complex …
Ray-tracing hardware - Wikipedia
https://en.wikipedia.org/wiki/Ray-tracing_hardware
Introduction: Ray tracing and rasterization The problem of rendering 3D graphics can be conceptually presented as finding all intersections between a set of "primitives" (typically triangles or polygons) and a set of "rays" (typically one or more per pixel).
Ray Tracing Generalized Tube Primitives: Method …
http://sci.utah.edu/~will/papers/tubes.pdf
Han et al. / Ray Tracing Generalized Tube Primitives: Method and Applications high-fidelity rendering of data represented as 3D line primitives. Such line primitives are used to represent data in a range of scien-tific domains, such as fluid dynamics (e.g., streamlines and path-lines) [Ste00,MTHG03,STH∗09,GGTH07,Mer12], medical imag-
RAY TRACING FOR CURVES PRIMITIVE - WSCG
http://wscg.zcu.cz/wscg2002/Papers_2002/A83.pdf
For ray tracing, though there are many algorithms for testing the intersection of a ray and a variety of prim-itives, an algorithm for the Curves or similar prim-itive is not known well. Possible solutions include (1) replacement with other types of primitives such as a generalized cylinder [Wijk84] and (2) tessella-tion into tiny polygons.
Ray Tracing with C++ – Wenyu Wu
https://zzzhua.wordpress.com/ray-tracing-with-cpp/
Ray tracing support for primitives: triangle, plane, sphere, cylinder, disk; Mesh reader that can read a mesh and calculate the normal of triangles. The world that contains all the meshes and primitives to be rendered. A viewplane that functions as …
Ray Tracing Basics I
http://cs.rit.edu/~jmg/courses/cgII/20072/slides/2-2-raytraceBasics1.pdf
Most of the computation in ray tracing is determining ray object-intersection When a ray intersects an object, we need to know: Point of intersection Normal of surface at point of intersection Ray-Sphere Intersection The Sphere A sphere can be defined by: Center (x c, y c, z c) Radius r Equation of a point (x s, y s, z s) on a sphere:
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