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Raytracing 2D concept - Raytracing on Tile maps, basic …
http://technologies4.me/articles/raytracing-tile-maps-basic-concepts-a27/raytracing-2d-concept-65/
Raytracing, as the name implies, involves tracing the path of a ray, or line, to check for collisions. In these tutorials we'll look at how to make use of this on 2D tile maps for determining the area visible to or illuminated by game entities. View example To begin with, lets examine the picture below to make sure we understand the concept:
Ray Tracing Tutorial - GitHub Pages
https://sebastiandang.github.io/docs/cse168/RayTracing.pdf
The ideas behind ray tracing (in its most basic form) are so simple, we would at first like to use it everywhere. But it's not used everywhere. Ray tracing has been used in production environment for off-line rendering for a few decades now. That is rendering that doesn't need to have finished the whole scene in less than a few milliseconds.
Ray Tracing Basics
https://web.cse.ohio-state.edu/~shen.94/681/Site/Slides_files/basic_algo.pdf
Backward Tracing For every pixel Construct a ray from the eye For every object in the scene Find intersection with the ray Keep if closest The Viewing Model •Based on a simple Pinhole Camera model Simplest lens model Inverted image Similar triangles Perfect image if hole infinitely small Pure geometric optics No blurry
Simple Two-D Raytrace Algorithm - Tom Murphy
https://tmurphy.physics.ucsd.edu/astr597/exercises/raytrace-2d.pdf
Simple Two-D Raytrace Algorithm Tom Murphy April, 2011 1 Introduction This document describes the mathematical formulation implemented in the raytracing program(s) that we will use in our optical investigations. This particular algorithm is at the heart of each program, performing the mathematical operations relevant to each surface encounter.
Underwater Ray Tracing Tutorial in a 2D Axisymmetric …
https://www.comsol.com/model/underwater-ray-tracing-tutorial-in-a-2d-axisymmetric-geometry-44711
Application ID: 44711 When computing ray intensity in 2D axisymmetric models, the wavefront associated with the propagating ray is treated as a spherical or ellipsoidal wave, instead of a cylindrical wave. This tutorial example illustrates how to set up several important features using the Ray Acoustics interface.
Ray Tracing Basics I
http://cs.rit.edu/~jmg/courses/cgII/20072/slides/2-2-raytraceBasics1.pdf
16 Ray-Polygon Intersection Find the plane in which the polygon sits A plane can be defined by: A normal vector and a point And has the equation where P n = (A, B, C) gives the normal and if normalized (A 22+ B + C = 1), F will give the shortest distance to the plane from the origin of the world. Ax+By+Cz+F=0 Ray-Polygon Intersection Find the point of intersection between the ray
Introduction to Geometrical Optics - a 2D ray tracing Excel …
https://559720-1801802-raikfcquaxqncofqfm.stackpathdns.com/wp-content/uploads/2011/04/Mirrors_Tutorial_1.pdf
-This is a tutorial explaining the creation of an exact 2D ray tracing model for both spherical concave and spherical convex mirrors. -The model is 2D in the sense that the ray tracing is done in the median x-y plane of symmetry of the mirror
Introduction to Geometrical Optics - a 2D ray tracing Excel …
https://559720-1801802-raikfcquaxqncofqfm.stackpathdns.com/wp-content/uploads/2011/04/Mirrors_Tutorial_2.pdf
-This is a tutorial explaining the creation of an exact 2D ray tracing model for both spherical concave and spherical convex mirrors. -While the previous section dealt with creating and plotting the mirror, this section explains the geometry of the 25 …
Computer Graphics from Scratch - Gabriel Gambetta
https://www.gabrielgambetta.com/computer-graphics-from-scratch/02-basic-raytracing.html
Let’s go back to the “algorithm” presented earlier, use the appropriate technical terms, and number the steps in Listing 2-1: Place the camera and the viewport as desired For each pixel on the canvas Determine which square on the viewport corresponds to this pixel Determine the color seen through that square Paint the pixel with that color
Introduction to Ray Tracing: a Simple Method for Creating …
https://www.scratchapixel.com/lessons/3d-basic-rendering/introduction-to-ray-tracing
To begin this lesson, we will explain how a three-dimensional scene is made into a viewable two-dimensional image. Once we understand that process and what it involves, we will be able to utilize a computer to simulate an "artificial" image by similar methods. We like to think of this section as the theory that more advanced CG is built upon.
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