Perspective function in MV.js webgl -


let's suppose clip volume [-2,2] in x,y,z. want use perspective function inbuilt in mv.js takes parameters fovy,aspect ratio,-near,-far don't understand how choose these parameters -near,-far.

no idea mv.js in general perspective functions take znear , zfar parameters. set them relative scale of scene. in case might set them znear = 0.001 , zfar = 4

this make frustum (the space can see that's shaped 4 sided cone) can see things -0.001 units away origin -4 units away origin. if set znear 0.1 -0.09 clipped.

i have no idea mean suppose clip volume [-2,2] in x,y,z. clip volume of webgl -1, 1 in x,y,z.

in normal use case when apply perspective matrix clip volume becomes frustum defined parameters. z clip volume becomes -znear -zfar. x , y clip volumes scale along z axis. @ -znear y clip goes -znear/2 +znear/2 , xaxis goes -znear/2 * aspect +znear/2 * aspect. @ zfar x , y axis scaled field of view requested.

there's live digram of clip space defined perspective function on this page.


Comments

Post a Comment

Popular posts from this blog

Command prompt result in label. Python 2.7 -

i want put result(output) of shell command label. command works, label shows "0", however, in command prompt, result shown correctly, need showed in label. doing ubuntu. myg1 = button(root, text="rodyti informacija", command=lambda: gauti()) myg1.pack(side=bottom) def gauti(): imti = tekstas.get("1.0", "end-1c") info = subprocess.call("id '{imti}' ".format(imti=imti), shell=true) w = label(root, text= info) w.pack(side = bottom) subprocess.call() returns exit code of process created (in case 0 success). if want text output of process, should instead call subprocess.check_output() .
Read more

javascript - How do I use URL parameters to change link href on page? -

i change href value of link using url parameters. example: default <a id="dlink" href="link-1">link</a> but, when user goes https://url.com/?dlink=link-2 it swaps out link new link <a id="dlink" href="link-2">link</a> first need value url. if you're not using javascript framework can create function using jquery. please check get url parameter jquery or how query string values in js it. after that, element "a" id , set value there. $("#dlink").attr("href", hreffromparam);
Read more

amazon web services - AWS Route53 Trying To Get Site To Resolve To www -

so have domain nameservers pointed aws route 53. site hosted on ec2 instance , reachable resolves site.com, if input www.site.com. i'm curious how site resolve www.site.com. have under route53 domains hosted zone 2 additional record sets outside of ns , soa: a site.com ec2 elastic ip cname www.site.com ec2 public dns i can reach site using both site.com , www.site.com, resolve site.com. there way make if enter either, resolves www.site.com? at first, both should record set. a site.com ec2 elastic ip www.site.com ec2 elastic ip and need redirect setting in web server (nginx, apache, ..) following. (source: how redirect www non-www nginx on centos 7 ) redirect non-www www if want redirect users plain, non-www domain www domain, add server block: server { server_name example.com; return 301 $scheme://www.example.com$request_uri; } save , exit. configures nginx redirect requests "example.com" "www.example.com". not...
Read more