Ray casting - polygon rendering and ray tracing methods, Computer Graphics

Assignment Help:

Ray Casting -polygon rendering and ray tracing methods

It is a method wherein the surfaces of objects visible to the camera are determined by throwing or say casting rays of light from the viewer in the scene. The concept behind this casting is to shoot rays from the eye, one per pixel and get the closest object blocking the path of such ray - think of an image as a screen-door, along with each square in the screen being a pixel.

275_Ray Casting - Polygon Rendering and Ray Tracing Methods.png

It is then the object the eye usually sees by that pixel. By using the material properties and the consequence of the lights in the view, this algorithm can find out the shading of this object. The simple assumption is made when a surface faces a light, then the light will reach such surface and not be blocked or in shadow. The shading of the surface is calculated by using traditional 3-D computer graphics shading models. This type of casting is not a synonym for ray tracing, although can be thought of as an abridged, and considerably faster, version of the ray tracing algorithm. Both images are order algorithms utilized in computer graphics to render 3-dimensional scenes to two dimensional screens by subsequent rays of light from the eye of the observer to a light source. Though ray tracing is as same to ray casting, this may be better consideration of as an extension of ray casting we will discuss such in the next topic in this section.


Related Discussions:- Ray casting - polygon rendering and ray tracing methods

Define emissive and non-emissive displays, What do you mean by emissive and...

What do you mean by emissive and non-emissive displays?  The emissive display changes electrical energy into light energy. The plasma panels, thin film electro-luminescent disp

Design a game using graphical user interface, BlackJack is a popular card g...

BlackJack is a popular card game played in many casinos. The player plays against the dealer aiming to reach 21 points, or a score higher than the dealer without exceeding 21. The

Light wave 3d - softwares for computer animation, Light Wave 3D - Softwares...

Light Wave 3D - Softwares for computer animation It is the other high end PC 3-D computer graphics software package. Originally established for the Amiga platform, it is now a

Explain reflection, What is reflection?  The reflection is actually the...

What is reflection?  The reflection is actually the transformation that produces a mirror image of an object. For this use some angles and lines of reflection.

Positive accelerations - computer animation, Positive Accelerations - Compu...

Positive Accelerations - Computer Animation So as to incorporate increasing speed in an animation the time spacing among the frames should increase, hence greater change in th

Transformation for 3-d rotation, Transformation for 3-D Rotation Rotat...

Transformation for 3-D Rotation Rotation in 3-dimensions is considerably more complicated then rotation in 2-dimensions. In 2-Dimentional, a rotation is prescribed via an angl

Important points about the diffuse reflection, Important Points About the D...

Important Points About the Diffuse Reflection An extremely rough surface appears uniformly bright from each viewing direction Q the intensity of reflected light is identical i

What is scaling and shearing, What is scaling and shearing? The scaling...

What is scaling and shearing? The scaling transformations alters the shape of an object and can be carried out  by multiplying every vertex (x,y) by scaling factor Sx, Sy where

Scientific visualization, Scientific Visualization This is complex for...

Scientific Visualization This is complex for the human brain to create sense out of the large volume of numbers produced through a scientific computation. Statistical and nume

Briefly explain the importance of an adjustment layer, Question : (a) W...

Question : (a) What do you meant by "solo a layer " in Adobe After Effects. Explain briefly how would you perform it. (b) Briefly explain the importance of an adjustment lay

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd