{"topic":{"id":6280,"title":"实验 1.3 提问","slug":"topic","userId":1451,"categoryId":56,"createdAt":"2023-10-07 09:20:29.154413","bumpedAt":"2023-10-07 12:35:40.65159","views":256,"postsCount":3,"highestPostNumber":3,"likeCount":0,"closed":true,"pinned":false,"pinnedGlobally":false,"pinnedAt":null,"pinnedUntil":null,"isBanner":false,"excerpt":"此处的 top 变量具有什么含义，与 t=n*tan（fov_y/2) 有什么联系吗","deletedAt":null,"isAnonymous":false,"isPrivate":false,"isMembersOnly":false,"category":{"id":56,"name":"计算机图形学","slug":"cg","color":"92278F"},"author":{"id":1451,"username":"canyu0","name":"canyu0","avatarUrl":"/uploads/image/32/d3/32d384d818124c8af587f11c235c5238544758c53d72a72cfac3d3603d8d5a1d.avif"},"realAuthor":{"id":1451,"username":"canyu0","name":"canyu0","avatarUrl":"/uploads/image/32/d3/32d384d818124c8af587f11c235c5238544758c53d72a72cfac3d3603d8d5a1d.avif"},"tags":[]},"posts":[{"id":12869,"postNumber":1,"raw":"![image|625x102](/uploads/image/27/e6/27e64e2a9157c0ace3664ec929d2f4bd62fb8da4b48936e49bf50bc48c7abba9.avif)\n此处的 top 变量具有什么含义，与 t=n*tan（fov_y/2) 有什么联系吗","cooked":"

$\"image\"$
\n此处的 top 变量具有什么含义，与 t=n*tan（fov_y/2) 有什么联系吗

\n","createdAt":"2023-10-07 09:20:29.251879","updatedAt":"2023-10-07 12:48:58.767736","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":22,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":2,"publicVersion":2,"deletedAt":null,"isAnonymous":false,"user":{"id":1451,"username":"canyu0","name":"canyu0","avatarUrl":"/uploads/image/32/d3/32d384d818124c8af587f11c235c5238544758c53d72a72cfac3d3603d8d5a1d.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":12895,"postNumber":2,"raw":"个人认为就是高","cooked":"

个人认为就是高

\n","createdAt":"2023-10-07 12:10:42.070567","updatedAt":"2023-10-07 12:10:42.070567","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":7,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":1,"publicVersion":1,"deletedAt":null,"isAnonymous":false,"user":{"id":1554,"username":"JJBond","name":"弃之可惜","avatarUrl":null,"admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":12902,"postNumber":3,"raw":"这里的 `top` 表示视锥体被远平面 $z=-\\text{far}$ 所截时，截面上最大的 y 坐标，也就是截得矩形高度的一半。","cooked":"

这里的 top 表示视锥体被远平面 $z=-\\text{far}$ 所截时，截面上最大的 y 坐标，也就是截得矩形高度的一半。

\n","createdAt":"2023-10-07 12:35:40.65159","updatedAt":"2023-10-07 12:35:40.65159","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":41,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":1,"publicVersion":1,"deletedAt":null,"isAnonymous":false,"user":{"id":1381,"username":"greyishsong","name":"greyishsong","avatarUrl":"/uploads/image/da/bc/dabc731b0311f59850625bbeb55ed969fcfac0430c5ef0f68441e5466b7aa496.avif","admin":false,"moderator":true,"signatureRaw":null,"signatureCooked":null}}],"hasMore":false,"lastReadPostNumber":2,"hasUrlPostNumber":true}