{"id":16897525,"url":"https://github.com/rogerallen/jmandelbrotr","last_synced_at":"2026-04-18T11:02:58.509Z","repository":{"id":143405507,"uuid":"157038488","full_name":"rogerallen/jmandelbrotr","owner":"rogerallen","description":"Java CUDA Mandelbrot explorer","archived":false,"fork":false,"pushed_at":"2019-03-09T19:42:22.000Z","size":165,"stargazers_count":2,"open_issues_count":1,"forks_count":0,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-09-09T20:12:51.715Z","etag":null,"topics":["cuda","cuda-opengl","java","jcuda","joml","lwjgl3","mandelbrot-viewer","opengl"],"latest_commit_sha":null,"homepage":null,"language":"Java","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/rogerallen.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}},"created_at":"2018-11-11T01:52:38.000Z","updated_at":"2020-12-27T10:37:23.000Z","dependencies_parsed_at":null,"dependency_job_id":"26f71cfb-77df-475b-9283-c57a8772e518","html_url":"https://github.com/rogerallen/jmandelbrotr","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/rogerallen/jmandelbrotr","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rogerallen%2Fjmandelbrotr","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rogerallen%2Fjmandelbrotr/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rogerallen%2Fjmandelbrotr/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rogerallen%2Fjmandelbrotr/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/rogerallen","download_url":"https://codeload.github.com/rogerallen/jmandelbrotr/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rogerallen%2Fjmandelbrotr/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":31966217,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-04-18T00:39:45.007Z","status":"online","status_checked_at":"2026-04-18T02:00:07.018Z","response_time":103,"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":["cuda","cuda-opengl","java","jcuda","joml","lwjgl3","mandelbrot-viewer","opengl"],"created_at":"2024-10-13T17:37:44.908Z","updated_at":"2026-04-18T11:02:58.492Z","avatar_url":"https://github.com/rogerallen.png","language":"Java","funding_links":[],"categories":[],"sub_categories":[],"readme":"# jmandelbrotr\n\nA [Mandelbrot set](https://en.wikipedia.org/wiki/Mandelbrot_set) pan/zoom application powered via [Java](https://www.java.com/), [CUDA](https://developer.nvidia.com/cuda-zone) (via [JCUDA](http://www.jcuda.org/)) and [OpenGL](https://www.opengl.org/) (via [LWJGL](https://www.lwjgl.org/) and [JOML](https://github.com/JOML-CI/JOML)).  \n\n![Screenshot](screenshot1.jpg)\n\n\n## Usage\n\nI built this using [Eclipse](https://www.eclipse.org/).  I don't really know how to properly package Java apps yet.  Hopefully, the pom.xml is enough for other Java IDEs.  Suggestions \u0026 pull requests would be considered.\n\nAn [NVIDIA](https://www.nvidia.com/) graphics card is required.  If you have a laptop with hybrid graphics, use the NVIDIA Control Panel's Manage 3D Settings panel and Program Settings tab to make Java choose the \"High-performance NVIDIA processor\".\n\nMaking the window smaller will speed up the calculation.\n\n### Mouse \n\nLeft click to pan.\nMiddle scroll wheel to zoom.\n\n### Key Bindings\n\n* __ESC__: quit\n* __d/s__: (d)ouble or (s)ingle floating point precision math.  Single is default.  It is faster \u0026 less precise.\n* __f__: switch to/from (f)ullscreen.\n* __enter__: begin zoom out mode.  animates un-zooming.\n* __1/2/3/4__: allow for N times 256 levels for determining whether in/out of mandelbrot set.\n* __p__: (p)rint out some state.\n* __w__: (w)rite out current screen to \"save.png\" -- careful, it will overwrite existing files.\n\nLOL, I thought that glfw would eventually allow me to make a pop-up menu to control these things...but no, that will not be possible.  Enjoy the old-school keyboard shortcuts, they build character.\n\n## License\n\nSince I cobbled this code together basically by stringing existing example code together, I'll be giving this back to the community.\n\n\u003cp xmlns:dct=\"http://purl.org/dc/terms/\" xmlns:vcard=\"http://www.w3.org/2001/vcard-rdf/3.0#\"\u003e\n  \u003ca rel=\"license\"\n     href=\"http://creativecommons.org/publicdomain/zero/1.0/\"\u003e\n    \u003cimg src=\"http://i.creativecommons.org/p/zero/1.0/88x31.png\" style=\"border-style: none;\" alt=\"CC0\" /\u003e\n  \u003c/a\u003e\n  \u003cbr /\u003e\n  To the extent possible under law,\n  \u003ca rel=\"dct:publisher\"\n     href=\"https://github.com/rogerallen/jmandelbrotr\"\u003e\n    \u003cspan property=\"dct:title\"\u003eRoger Allen\u003c/span\u003e\u003c/a\u003e\n  has waived all copyright and related or neighboring rights to\n  \u003cspan property=\"dct:title\"\u003eJMandelbrotr\u003c/span\u003e.\nThis work is published from:\n\u003cspan property=\"vcard:Country\" datatype=\"dct:ISO3166\"\n      content=\"US\" about=\"https://github.com/rogerallen/jmandelbrotr\"\u003e\n  United States\u003c/span\u003e.\n\u003c/p\u003e","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frogerallen%2Fjmandelbrotr","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Frogerallen%2Fjmandelbrotr","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frogerallen%2Fjmandelbrotr/lists"}