Converting from different handedness coordinate systems

Posted by SirYakalot on Game Development See other posts from Game Development or by SirYakalot
Published on 2011-11-19T08:59:55Z Indexed on 2011/11/19 10:16 UTC
Read the original article Hit count: 430

Filed under:

3d

|

math

|

directx

|

coordinates

|

directx10

I am currently porting a demo from XNA to DirectX which, as I understand it, both have coordinate systems with different handednesses.

What are the things I need to bare in mind when converting between the two? I understand not everything needs to be changed.

Also I notice that many of the 3D maths functions in some of the direct3D libraries have right handed and left handed alternatives. Would it be better to just use these?

© Game Development or respective owner

Related posts about 3d

How to convert videos to 3D format so that I can watch them with 3D glasses

as seen on Super User - Search for 'Super User'
Are there any softwares to convert 2D videos to 3D (preferably XviD avi) so that I can watch them with 3D glasses? No matter if it's freeware or shareware. >>> More
In Email, Image (img) Source (src) Tags are rewritten as relative links. How to fix?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm working on sending out an html based email, and every time it sends the image src tags and some of the anchor href tags are modified to be relative url's. Update 2: This is happening between when the body of the email is generated and sent and when it arrives in my inbox. Update: I am using… >>> More
WPF 3D - Need help writing conversion methods between 2D and 3D (Point3DToPoint and PointAndZToPoint

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm new to WPF 3D, so I may just be missing something obvious, but how do I convert from 3D to 2D and (for a given z location) from 2D to 3D? Specifically, I need two conversion methods: Point3DToPoint - If I have an (x, y, z) coordinate in the 3D world, how do I determine the (x, y) coordinate… >>> More
3D point on 3D mesh surface

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All, How can I get a 3D point on 3D mesh surface made up triangulars ? The 3D point may be anywhere on the 3D surface. Thanks. M.Ken >>> More
Matlab 3d volume visualization and 3d overlay

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, so the question ist pretty much the title. I have a 3d volume loaded as raw data [256, 256, 256] = size(A). It contains only values of zero's and ones, where the 1's represent the structure and 0's the "air". I want to visualize the structure in matlab and then run an algorithm on it and put… >>> More

Related posts about math

how to make a function recursive

as seen on Stack Overflow - Search for 'Stack Overflow'
i have this huge function and i am wondering how to make it recursive. i have the base case which should never come true, so it should always go to else and keep calling itself with the variable t increases. any help would be great thanks def draw(x, y, t, planets): if 'Satellites' in planets["Moon"]: … >>> More
Sunrise / set calculations

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to calculate the sunset / rise times using python based on the link provided below. My results done through excel and python do not match the real values. Any ideas on what I could be doing wrong? My Excel sheet can be found under .. http://transpotools.com/sun_time.xls # Created on… >>> More
Android-Java: Constructing a triangle based on Coordinates on a map and your bearing

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi Guys, I'm constructing a geolocation based application and I'm trying to figure out a way to make my application realise when a user is facing the direction of the given location (a particular long / lat co-ord). I've got the math figured, I just have the triangle to construct. //UPDATE So… >>> More
Math.max and Math.min outputting highest and lowest values allowed

as seen on Stack Overflow - Search for 'Stack Overflow'
so I'm trying to make a program that will output the sum, average, and smallest and largest values. I have everything basically figured out except the smallest and largest values are outputting 2147483647 and -2147483647, which I believe are the absolute smallest and largest values that Java will… >>> More
Is Programming == Math?

as seen on Stack Overflow - Search for 'Stack Overflow'
I've heard many times that all programming is really a subset of math. Some suggest that OO, at its roots, is mathematically based. I don't get the connection. Aside from some obvious examples: using induction to prove a recursive algorithm formal correctness proofs functional languages lambda calculus asymptotic… >>> More