tl;dr: <\/strong>some useful Python snippets for Nuke.<\/p>\n<\/div><\/div>\n

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Here you guys have a bunch of little Python scripts to make some common comping tasks just a tiny bit easier<\/strong>. Nothing too ambitious though, just a few tricks that will buy you some time and make you look more pro, especially when used along with the amazing W_hotbox tool<\/a>.<\/strong><\/div>\n<\/div><\/div>\n<\/div>\n
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b_procedural_backdrop<\/strong><\/h6>\n
This one is an extended version of a script I previously posted and will enable to procedurally create Backdrop Layouts that are nicely and evenly arranged along Nuke\u00b4s Nodegraph.<\/strong> Here is how:<\/div>\n
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1 - How to use it<\/strong><\/p>\n
So first things first, let\u00b4s place the code where it can be reached, create a new Nuke Menu and set up a shortcut.<\/p>\n
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Distribute the code<\/strong><\/p>\n
Download the script from the link below save it as a Python file called \"b_procedural_backdrop<\/span>.py<\/span>\"\u00a0<\/span>where Nuke can find it. In other words, place it within the Nuke Plugin Path file structure. For more info, read my previous posts.<\/p>\n
Edit the menu.py file<\/strong><\/p>\n
Now we have the Python module where Nuke can find it, we\u00b4re gonna add the following lines to our fantastic menu.py so that we can effectively use it:<\/p>\n
import b_procedural_backdrop.py\r\nn_menu = nuke.menu('Nuke')\r\nb_menu = n_menu.addMenu('MenuName')\r\nb_menu.addCommand('b_procedural_backdrop.py', b_procedural_backdrop.main_function()', 'ctrl+a')<\/pre><\/div>\n
Save the menu.py and restart Nuke.<\/p>\n
2 - Try it<\/strong><\/p>\n
You'll notice that there is a new menu in your upper menu bar, listing the new 'b_procedural_backdrop' <\/span>command and its Hotkey. Just select a bunch of nodes and press 'alt+a '(it\u00b4s the hotkey we set up earlier, obviously you can change this to any other of your convenience). A Nuke Panel like this one should appear:<\/p>\n
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As you can see, there are a few parameters to deal with:<\/p>\n
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<\/i> Note Size<\/strong>: set your note size.<\/li>\n
<\/i> Label<\/strong>: set your label.<\/li>\n
<\/i> Align<\/strong>: left, right or center.<\/li>\n
<\/i> Color<\/strong>: pick your color, or throw the dice with random option.<\/li>\n
<\/i> Amount<\/strong>: how many backdrops you want.<\/li>\n
<\/i> Axis<\/strong>: horizontal or vertical layout.<\/li>\n
<\/i> Spacing<\/strong>: set the spacing between your backdrops<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
Here is a Backdrop Layout<\/strong> example to give you an idea of this would look like:<\/p>\n
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Additionally to the backdrops, as you can notice a dotted spine is created close to the layout so that you can use it as the main spine<\/strong> of your comp, in case that would be of your interest.<\/p>\n
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code<\/strong><\/h6>\ndownload b_procedural_backdrop<\/a>\n
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b_ibkstacker<\/strong><\/h6>\n
This one will enable you to stack IBK Colour recursively in the blink of an eye<\/strong>.<\/div>\n
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1 - How to use it<\/strong><\/p>\n
After having installed the code and assigned it to a shortcut like in the first example, just select an IBK Colour Node and run the tool<\/strong>. \u00a0A Nuke Panel like this one should appear:<\/p>\n
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As you can see, there are a few parameters to deal with:<\/p>\n
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<\/i> ibk colour stack recursion limit<\/b>: a drop-down menu that allows you to specify the recursion limit of your IBKColour Node stack.<\/li>\n
<\/i> add corrective roto<\/strong>: a checkbox that will merge a clamped roto under your first IBKColour to help clean up the clean plate.<\/li>\n<\/ul>\n<\/div>\n
Now s<\/strong>imply select from the drop-down menu the recursion limit <\/strong>\u00a0and check the \"add corrective roto\"<\/strong> button if necessary.<\/strong> Having done that, click OK and in short time you will have a stack of IBK Colour Nodes linked via expressions to the first one<\/strong>, along with an IBK Gizmo connected both to the Clean Plate and to the Plate.<\/p>\n
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Alternatively, if you checked the \"add corrective roto\" <\/strong>checkbox, you would have something like this :<\/strong><\/p>\n
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There you go, a fully automated IBK stacking system that will save you a brief time<\/strong> each time you use it.<\/p>\n
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code<\/strong><\/h6>\ndownload b_ibkstacker<\/a>\n
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b_distance_normalizer<\/strong><\/h6>\n
Have you ever wanted to calculate the distance between two animated 3d points?<\/strong> I am pretty sure you have. Have you ever wanted to then normalize that distance so that it runs from 0 to 1 and thus be able to use it as a multiplier of some parameter in your comp?<\/strong> Maybe?<\/strong> OK, that is what this tool does exactly, it will calculate the distance between two 3d points (say a Camera Node and an Axis) and then it normalizes it so that it runs from 0 to 1.<\/div>\n
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1 - How to use it<\/strong><\/p>\n
This time we are dealing with a Gizmo that has two inputs: \"inputcam\" & \"inputaxis\"<\/strong>. Note that you can plug any 3d Node that has a \"Translate\" Knob.<\/p>\n
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On the properties bin you will find four knobs:<\/p>\n
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<\/i> distance<\/strong>: displays the distance between the two inputs in world units.<\/li>\n
<\/i> normalized_distance<\/strong>: displays the normalized version of the distance.<\/li>\n
<\/i> normalize_distance<\/strong>: a Python Script Button that will run the code that calculates the normalized distance and creates an animated curve running from 0 to 1.<\/li>\n
<\/i> reset_curve<\/strong>: resets the normalized_distance curve to 0.<\/li>\n<\/ul>\n<\/div>\n $\"\"$ <\/a><\/p>\n
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So now you are unstoppable when it comes to animating stuff depending on how close or far away a specific object may be<\/strong>. Not that bad, huh?<\/p>\n
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code<\/strong><\/h6>\ndownload b_distance_normalizer Gizmo<\/a>\n download b_distance_normalizer Python Module<\/a>\n
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b_cam_puller<\/strong><\/h6>\n
Often times,\u00a0<\/b>when dealing with a pgBokeh Node <\/strong>connected to a Camera Node, we need to set the \"focal_distance\" and \"F-stop\" knobs by hand<\/strong> to define the aperture and the focal point of the camera in order to have a correct DoF<\/strong> setup. This little tool will enable you to do those things in a slightly more streamlined way, <\/strong>especially if you would be provided with a list of focal distance values. Let's take a look:<\/div>\n<\/div>\n
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1 - How to use it<\/strong><\/p>\n
After having installed the code and assigned it to a shortcut like in the first example, just run the tool<\/strong>. \u00a0A Nuke Panel like this one should appear:<\/p>\n
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As you can see, there are a few parameters to deal with:<\/p>\n
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<\/i> fstop<\/strong>: sets the fstop of the selected Camera Node.<\/li>\n
<\/i> frame_list<\/strong>: set here the frames you want to set focal distance values on.<\/li>\n
<\/i> focus plane values<\/strong>: focal distance values correlative to the corresponding frame values.<\/li>\n
<\/i> choose camera<\/strong>: lists all Camera Nodes in your Nuke Script.<\/li>\n<\/ul>\n<\/div>\n
Now click OK and the selected Camera Node<\/strong> will have the corresponding values set up. Open the curve editor and check out the selected Camera's \u00a0\"focal_distance\" knob. \u00a0It will have an animation curve with each of the focal plane values on each of the frames in the passed frame list.<\/p>\n
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code<\/strong><\/h6>\ndownload b_cam_puller<\/a>\n
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b_keymix_this<\/strong><\/h6>\n
This one will enable you to create a KeyMix setup in the blink of an eye.<\/strong><\/div>\n
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1 - How to use it<\/strong><\/p>\n
After having installed the code and assigned it to a shortcut like in the first example, just select any node and run the tool<\/strong>:<\/p>\n
before\/after<\/strong><\/p>\n
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There you go, a fully automated KeyMix setup system that will save you a few seconds time each time you use it<\/strong>. Not too much I know, but something is something, right?<\/p>\n
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code<\/strong><\/h6>\nDownload b_key_mix_this<\/a>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
b_procedural_backdrop This one is an extended version of a script I previously posted and will enable to procedurally create Backdrop Layouts that are nicely and evenly arranged along Nuke\u00b4s Nodegraph. Here is how: 1 – How to use it So first things first, let\u00b4s place the code where it can be reached, create a new […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,47,48,49],"tags":[],"class_list":["post-2674","post","type-post","status-publish","format-standard","hentry","category-cinema-2","category-nuke","category-python","category-scripting"],"_links":{"self":[{"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/posts\/2674","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/boris-mc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2674"}],"version-history":[{"count":3,"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/posts\/2674\/revisions"}],"predecessor-version":[{"id":2686,"href":"https:\/\/boris-mc.com\/index.php?rest_route=\/wp\/v2\/posts\/2674\/revisions\/2686"}],"wp:attachment":[{"href":"https:\/\/boris-mc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boris-mc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2674"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boris-mc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}