{"id":3239,"date":"2016-07-17T23:58:36","date_gmt":"2016-07-17T22:58:36","guid":{"rendered":"http:\/\/phoenixgamedevelopment.com\/blog\/?p=3239"},"modified":"2016-07-18T00:04:08","modified_gmt":"2016-07-17T23:04:08","slug":"p-152-virtual-world-concept-update-135-planet-sized-terrain-part-14","status":"publish","type":"post","link":"https:\/\/phoenixgamedevelopment.com\/blog\/p-152-virtual-world-concept-update-135-planet-sized-terrain-part-14\/","title":{"rendered":"P-152: Virtual World Concept Update 135: Planet-sized Terrain: Part 14"},"content":{"rendered":"

I have made significant progress recently with regards to rendering realistic terrain. I have implemented the changes that I wrote about in my previous post, and this seems to be working. Essentially, I am taking the local space coordinates of the terrain (between -1 and +1) and scaling them to the true world-space coordinates of the planet\u00a0(using 64-bit numbers). I am then performing the LOD subdivision on these 64-bit numbers, gradually iterating through the levels, and each time, I am discarding nodes that are outside a given range of the player.
\nThe images below show this process at work:<\/p>\n

\"P152_DEBUG<\/a>
P152_DEBUG
15\/07\/2016 , 05:29:35 PM
Torque 3D MIT – P152<\/figcaption><\/figure>\n

\"P152_DEBUG<\/a><\/p>\n

P152_DEBUG
\n15\/07\/2016 , 06:13:05 PM
\nTorque 3D MIT – P152<\/p>\n

\"P152_DEBUG<\/a>
P152_DEBUG
15\/07\/2016 , 06:08:44 PM
Torque 3D MIT – P152<\/figcaption><\/figure>\n
\"P152_DEBUG<\/a>
P152_DEBUG
15\/07\/2016 , 06:38:58 PM
Torque 3D MIT – P152<\/figcaption><\/figure>\n
\"P152_DEBUG<\/a>
P152_DEBUG
15\/07\/2016 , 06:42:59 PM
Torque 3D MIT – P152<\/figcaption><\/figure>\n

Finally, I end up with exactly what I want, which is a small number of nodes that are less than 10,000 units from the player. This has worked very well. I still need to change the “scale” parameter in the editor to the true scale (a 64-bit number) but this doesn’t seem to cause any issues. When I scale up in the editor, the rendered nodes seem to be exactly right:<\/p>\n

\"P152_DEBUG<\/a>
P152_DEBUG
16\/07\/2016 , 01:20:57 AM
Torque 3D MIT – P152<\/figcaption><\/figure>\n
\"P152_DEBUG<\/a>
P152_DEBUG
16\/07\/2016 , 07:14:07 PM
Torque 3D MIT – P152<\/figcaption><\/figure>\n

I haven’t verified the distance exactly, but they look to be approximately correct.<\/p>\n

I still have a lot of work to do with verifying and improving this code, but I think I definitely have proof of concept.<\/p>\n","protected":false},"excerpt":{"rendered":"

I have made significant progress recently with regards to rendering realistic terrain. I have implemented the changes that I wrote about in my previous post, and this seems to be working. Essentially, I am taking the local space coordinates of the terrain (between -1 and +1) and scaling them to the true world-space coordinates of […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,17,10,11],"tags":[],"class_list":["post-3239","post","type-post","status-publish","format-standard","hentry","category-astral-realms","category-p-0","category-software-and-games","category-spiritus-astrum","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"aioseo_notices":[],"builder_content":"","_links":{"self":[{"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/posts\/3239"}],"collection":[{"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/comments?post=3239"}],"version-history":[{"count":4,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/posts\/3239\/revisions"}],"predecessor-version":[{"id":3253,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/posts\/3239\/revisions\/3253"}],"wp:attachment":[{"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/media?parent=3239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/categories?post=3239"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/tags?post=3239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}