shaderMeister<\/a>?– though I don’t know if it the Spot Instance node will work with it). Basically, I wanted an easy way of assigning RGB colours to items in a particular group.<\/p>\nBefore, Janus’s item processing was strictly group-oriented, where group settings were simply propagated to the items. There was no way to individually and programmatically affect certain items within the group. So in the latest rev, I changed that. But the important bit was that I tied it (again) to user functions, and I embedded a new context — the group item context — through populating two constant variables relating to the group item’s index and name. In this way, the user function can be created that references the group item’s index, and based on that value, the command parameters can be changed on that particular item as it is being processed. It’s basically a ‘last minute’ change in the render pass settings just before the group item is applied its parent group settings.<\/p>\n
Since user functions are basically string replacements from within the cmd line, there’s a lot of flexibility (but can also end up a heaping mess if the Janus user doesn’t watch it), so that I can dynamically various bits of settings; I’m not limited to adding one parameter, for example, because I can just concatenate the new subcommands in the return string; so as along as the final resulting cmd line is syntactically valid, Janus will grok it.<\/p>\n
\n","protected":false},"excerpt":{"rendered":"
Here I am, few days later talking about user functions in Janus again. Why not? It’s been giving me results and it’s fun to play with — as a TD, I mean. Back at work I wanted to output an RGB matte for multiple instanced object. LW doesn’t have a way to do a scene-based […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[54,1],"tags":[28,15,29,36],"class_list":["post-444","post","type-post","status-publish","format-standard","hentry","category-janus","category-uncategorized","tag-janus","tag-lightwave","tag-scripting","tag-user-functions"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1gtd2-7a","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/faulknermano.com\/blog\/wp-json\/wp\/v2\/posts\/444","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/faulknermano.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/faulknermano.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/faulknermano.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/faulknermano.com\/blog\/wp-json\/wp\/v2\/comments?post=444"}],"version-history":[{"count":6,"href":"http:\/\/faulknermano.com\/blog\/wp-json\/wp\/v2\/posts\/444\/revisions"}],"predecessor-version":[{"id":455,"href":"http:\/\/faulknermano.com\/blog\/wp-json\/wp\/v2\/posts\/444\/revisions\/455"}],"wp:attachment":[{"href":"http:\/\/faulknermano.com\/blog\/wp-json\/wp\/v2\/media?parent=444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/faulknermano.com\/blog\/wp-json\/wp\/v2\/categories?post=444"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/faulknermano.com\/blog\/wp-json\/wp\/v2\/tags?post=444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}