[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-136224-en":3,"doc-seo-136224-105":30,"detail-sidebar-cat-0-en-105":90},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":4,"is_deleted":4,"is_public":20,"is_downloadable":20,"audit_status":20,"page_count":21,"language":22,"language_code":23,"site_id":24,"html_lang":23,"table_of_contents":25,"faqs":26,"seo_title":27,"seo_description":14,"update_tm":28,"read_time":29},136224,962084925782,"Chloe Bennett","https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc",6,"Technology","Frozen 2 - Effects Vegetation Pipeline","Walt Disney Animation Studios’ “Frozen 2” unfolds in the Enchanted Forest, where distinctive vegetation—leaves and foliage—must be art-directed and manipulated by characters such as Gale, and where many scenes feature large sections of forest burning. The scale and quantity of vegetation effects created a major challenge for the Effects department. Two new workflows, the Vegetation Asset workflow and the Fire Tree workflow, enable high-quality procedural tree animation and fire-tree simulations, improving efficiency while letting artists focus on craft and elevating overall artistic quality through better shot data management.","Frozen 2: Effects Vegetation Pipeline  \nNorman Joseph  \nWalt Disney Animation Studios  \nVijoy Gaddipati∗ Paramount Animation  \nBenjamin Fiske  \nWalt Disney Animation Studios  \nMarie Tollec  \nWalt Disney Animation Studios  \nTad Miller  \nWalt Disney Animation Studios  \nFigure 1: Example Vegetation shots in Frozen 2.  \nABSTRACT  \nWalt Disney Animation Studios’ \"Frozen 2\" takes place in the Enchanted Forest, which is full of vegetation (e.g. distinctive leaves and foliage) that is manipulated by other characters, including the wind character, Gale. \"Frozen 2\" also has multiple scenes where a large portion of the forest is on fire. The quantity and scale of vegetation effects in \"Frozen 2\" presented a challenge to our Effects department. We developed two workflows, the Vegetation Asset workflow and the Fire Tree workflow, to help us achieve high quality artistic performance of procedural tree animation and fire tree simulations on \"Frozen 2\". Using the new workflows we not only saw an order of magnitude improvement in the work efficiency of our Effects artists, but also saw an increase in work satisfaction and overall artistic quality since the workflows handled the data management of various assets in the shot, allowing artists to concentrate more on their craft.  \nCCS CONCEPTS  \n• Computing methodologies → Procedural animation;  \nKEYWORDS  \nVegetation, Pipeline, Simulation  \nACM Reference Format:  \nNorman Joseph, Vijoy Gaddipati, Benjamin Fiske, Marie Tollec, and Tad Miller. 2020. Frozen 2: Effects Vegetation Pipeline. In Special Interest Group on Computer Graphics and Interactive Techniques Conference Talks (SIGGRAPH’20 Talks), August 17, 2020. ACM, New York, NY, USA, 2 pages. [https://doi](https://doi). org/10.1145/3388767.3409320  \n∗ The presented work was conducted while this author was employed at Walt Disney Animation Studios.  \nPermission to make digital or hard copies of part or all ofthis work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored.  \nFor all other uses, contact the owner/author(s) . SIGGRAPH’20 Talks, August 17, 2020, Virtual Event, USA © 2020 Copyright held by the owner/author(s) .  \nACM ISBN 978-1-4503-7971-7/20/08 .  \n[https://doi.org/10.1145/3388767.3409320](https://doi.org/10.1145/3388767.3409320)  \n1 INTRODUCTION  \nWalt Disney Animation Studios has developed several tools for creating procedural vegetation, including Disney’s XGen (grass, moss, trees, etc.), Bonsai (branched structures), and Aurora (point and nested instancing) [Keim et al. 2016; Shek et al. 2010; Thompson et al. 2003] . Each tool has its own unique strengths and purposes, so our artists use them all when creating complex environments with many different art-directed vegetation assets. However, each of these tools store data differently to efficiently match the internal representation. Thus, working with different types of vegetation assets has been difficult for the Effects department; the previous tool set required Effects artists to manually track different asset types and their corresponding separate import/export processes. Additionally, different asset types required separate setups in Houdini for simulation. This overhead distracted artists from the artistic side of their work and made building large-scale scenes difficult. Figure 1 Left shows an example of the scale of the enchanted forest.  \n\"Frozen 2\" contains a sequence where the whole forest is on fire. The circular dependency between the departments in our prior workflow made it difficult to accurately visualize their work without many iterations: layout artists require final fire simulations to choose which trees should be on fire, but Effects artists could not design the look of the burning trees in the shot until layout artists decided which trees","cbCaimS49mYPhkXt","https://ap.wps.com/l/cbCaimS49mYPhkXt","pdf",9000760,1,2,"English","en",105,"# Introduction\n# Vegetation Asset Workflow\n# Fire Tree Workflow","[{\"question\":\"What challenge did the Effects department face in Frozen 2?\",\"answer\":\"The film’s Enchanted Forest required a very large quantity and scale of vegetation effects, including procedural vegetation manipulation and extensive fire scenes, making the previous data and workflow overhead difficult to manage.\"},{\"question\":\"What problem did the Vegetation Asset workflow solve?\",\"answer\":\"It reduced time spent importing and handling different vegetation asset data types by using dedicated Houdini nodes to select, convert, and flatten assets into a consistent point representation for instancing.\"},{\"question\":\"How does the workflow help artists focus on artistic work?\",\"answer\":\"By automating data conversions and updating vegetation simulation data via the Vegetation Updater node, the workflow removes repetitive import/export and setup burdens, so artists can concentrate on simulation look and creative performance.\"}]","Frozen 2 - Effects Vegetation Pipeline | PDF",1787363506,5,{"code":4,"msg":31,"data":32},"ok",{"site_id":24,"language":23,"slug":33,"title":13,"keywords":34,"description":14,"schema_data":35,"social_meta":85,"head_meta":87,"extra_data":89,"updated_unix":28},"frozen-2-effects-vegetation-pipeline","",{"@graph":36,"@context":84},[37,53,67],{"@type":38,"itemListElement":39},"BreadcrumbList",[40,44,47,50],{"item":41,"name":42,"@type":43,"position":20},"https://docshare.wps.com","Home","ListItem",{"item":45,"name":46,"@type":43,"position":21},"https://docshare.wps.com/document/","Document",{"item":48,"name":12,"@type":43,"position":49},"https://docshare.wps.com/document/technology/",3,{"item":51,"name":13,"@type":43,"position":52},"https://docshare.wps.com/document/frozen-2-effects-vegetation-pipeline/136224/",4,{"url":51,"name":13,"@type":54,"author":55,"headline":13,"publisher":57,"fileFormat":60,"inLanguage":23,"description":14,"dateModified":61,"datePublished":61,"encodingFormat":60,"isAccessibleForFree":62,"interactionStatistic":63},"DigitalDocument",{"name":9,"@type":56},"Person",{"url":41,"name":58,"@type":59},"DocShare","Organization","application/pdf","2026-08-22",true,{"@type":64,"interactionType":65,"userInteractionCount":4},"InteractionCounter",{"@type":66},"ViewAction",{"@type":68,"mainEntity":69},"FAQPage",[70,76,80],{"name":71,"@type":72,"acceptedAnswer":73},"What challenge did the Effects department face in Frozen 2?","Question",{"text":74,"@type":75},"The film’s Enchanted Forest required a very large quantity and scale of vegetation effects, including procedural vegetation manipulation and extensive fire scenes, making the previous data and workflow overhead difficult to manage.","Answer",{"name":77,"@type":72,"acceptedAnswer":78},"What problem did the Vegetation Asset workflow solve?",{"text":79,"@type":75},"It reduced time spent importing and handling different vegetation asset data types by using dedicated Houdini nodes to select, convert, and flatten assets into a consistent point representation for instancing.",{"name":81,"@type":72,"acceptedAnswer":82},"How does the workflow help artists focus on artistic work?",{"text":83,"@type":75},"By automating data conversions and updating vegetation simulation data via the Vegetation Updater node, the workflow removes repetitive import/export and setup burdens, so artists can concentrate on simulation look and creative performance.","https://schema.org",{"og:url":51,"og:type":86,"og:title":13,"og:site_name":58,"og:description":14},"article",{"robots":88,"canonical":51},"index,follow",{"doc_id":7,"site_id":24},{"code":4,"msg":5,"data":91},[92,96,100,104,108,111,116,121,126,129,133],{"id":20,"doc_module":4,"doc_module_name":46,"category_name":93,"show_sort_weight":94,"slug":95},"Story & Novel",90,"story-novel",{"id":21,"doc_module":4,"doc_module_name":46,"category_name":97,"show_sort_weight":98,"slug":99},"Literature",80,"literature",{"id":52,"doc_module":4,"doc_module_name":46,"category_name":101,"show_sort_weight":102,"slug":103},"Exam",70,"exam",{"id":29,"doc_module":4,"doc_module_name":46,"category_name":105,"show_sort_weight":106,"slug":107},"Comic",60,"comic",{"id":11,"doc_module":4,"doc_module_name":46,"category_name":12,"show_sort_weight":109,"slug":110},50,"technology",{"id":112,"doc_module":4,"doc_module_name":46,"category_name":113,"show_sort_weight":114,"slug":115},7,"Healthcare",40,"healthcare",{"id":117,"doc_module":4,"doc_module_name":46,"category_name":118,"show_sort_weight":119,"slug":120},8,"Research & Report",30,"research-report",{"id":122,"doc_module":4,"doc_module_name":46,"category_name":123,"show_sort_weight":124,"slug":125},9,"Religion & Spirituality",20,"religion-spirituality",{"id":124,"doc_module":4,"doc_module_name":46,"category_name":127,"show_sort_weight":124,"slug":128},"World Cup","world-cup",{"id":130,"doc_module":4,"doc_module_name":46,"category_name":131,"show_sort_weight":130,"slug":132},10,"Lifestyle","lifestyle",{"id":134,"doc_module":4,"doc_module_name":46,"category_name":135,"show_sort_weight":29,"slug":136},19,"General","general"]