{"id":23635050,"url":"https://github.com/struct78/siliconblob","last_synced_at":"2026-05-14T23:40:36.534Z","repository":{"id":149715282,"uuid":"148881532","full_name":"struct78/siliconblob","owner":"struct78","description":"Projection for Silicon Block Party","archived":false,"fork":false,"pushed_at":"2018-10-04T22:55:57.000Z","size":1732,"stargazers_count":2,"open_issues_count":0,"forks_count":0,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-05-19T04:08:38.617Z","etag":null,"topics":["creative-coding","opengl","processing"],"latest_commit_sha":null,"homepage":null,"language":"Processing","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/struct78.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2018-09-15T07:52:07.000Z","updated_at":"2019-06-03T11:30:00.000Z","dependencies_parsed_at":"2023-04-25T15:03:15.632Z","dependency_job_id":null,"html_url":"https://github.com/struct78/siliconblob","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/struct78/siliconblob","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/struct78%2Fsiliconblob","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/struct78%2Fsiliconblob/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/struct78%2Fsiliconblob/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/struct78%2Fsiliconblob/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/struct78","download_url":"https://codeload.github.com/struct78/siliconblob/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/struct78%2Fsiliconblob/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":267610605,"owners_count":24115442,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","status":"online","status_checked_at":"2025-07-28T02:00:09.689Z","response_time":68,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["creative-coding","opengl","processing"],"created_at":"2024-12-28T05:29:52.412Z","updated_at":"2026-05-14T23:40:31.515Z","avatar_url":"https://github.com/struct78.png","language":"Processing","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Silicon Blob\n\nProjection for the 9th Silicon Block Party. Built using [Processing](https://processing.org/).\n\n### The blobs\nThe gradient effect is achieved by duplicating a single PNG 25 times and moving them around the screen. The PNG itself is a simple radial gradient that goes from white to transparent. Processing then tints the PNGs using linear interpolation against these 4 colours, which enables a smooth transition.\n\n```\nint[] colours = new int[] {\n  0xff588ffc,\n  0xff7458fc,\n  0xffa04cff,\n  0xffbb45e6\n};\n```\n\nThe blending is achieved by essentially opening the hood of Processing and calling these OpenGL functions directly.\n\n```\npgl.enable( PGL.TEXTURE_2D );\npgl.depthMask( false );\npgl.enable( PGL.BLEND );\npgl.blendFuncSeparate( PGL.SRC_ALPHA, PGL.ONE_MINUS_SRC_ALPHA, PGL.ONE, PGL.ONE );\n```\n\nEach blob has a random trajectory with a slight arc on the Y-axis. Once that blob is no longer visible, it is removed from the list\nand a new one is added at a random position on screen.\n\n### Audio reactivity\nAt the event, a line in was fed from the DJ booth into the machine running the projection. It then used the [Minim library](http://code.compartmental.net/minim/) to detect kicks (essentially big changes in sound energy), and adjusts the width of the line underneath the type.\n\n### Typography\nDue to the fact that I had no idea ahead of time what resolution the projector/screens would be running at, the typography values had to be percentages. This was a bit of a challenge, as it required me to insert an image of the logo, then adjust values by hand until each character sat flush over the image - hence all the magic numbers!\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstruct78%2Fsiliconblob","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fstruct78%2Fsiliconblob","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstruct78%2Fsiliconblob/lists"}