# CinderBlocks

**URL:** https://discourse.libcinder.org/c/cinderblocks/9.md

[Latest](https://discourse.libcinder.org/latest.md) · [Categories](https://discourse.libcinder.org/categories.md)

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## [About the CinderBlocks category](https://discourse.libcinder.org/t/about-the-cinderblocks-category/17)

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**Author:** [@andrewfb](https://discourse.libcinder.org/u/andrewfb)\
**Replies:** 1\
**Last updated:** [September 20, 2016, 6:18pm UTC](https://discourse.libcinder.org/t/about-the-cinderblocks-category/17 "2016-09-20T18:18:54Z")

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## [Cinder-Spout block update](https://discourse.libcinder.org/t/cinder-spout-block-update/2112)

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**Author:** [@brucelane](https://discourse.libcinder.org/u/brucelane)\
**Replies:** 0\
**Last updated:** [September 17, 2024, 4:47pm UTC](https://discourse.libcinder.org/t/cinder-spout-block-update/2112 "2024-09-17T16:47:07Z")

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Hi, I’m currently updating the Cinder-Spout block to target Spout 2.007 It you want to try it, here is the branch: GitHub - brucelane/Cinder-Spout at Spout2.007 Ongoing discussion on Cinder Block update - Developer - …

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## [Issues with Cinder-MIDI2 / RtMidi not detecting ports](https://discourse.libcinder.org/t/issues-with-cinder-midi2-rtmidi-not-detecting-ports/1587)

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**Author:** [@couleurs](https://discourse.libcinder.org/u/couleurs)\
**Replies:** 10\
**Last updated:** [March 30, 2024, 9:29pm UTC](https://discourse.libcinder.org/t/issues-with-cinder-midi2-rtmidi-not-detecting-ports/1587 "2024-03-30T21:29:13Z")

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Hey folks, I was revisiting an old app that used to work well with an external MIDI controller and realized the MIDI part doesn’t work on this new mac laptop I use which is on the Mojave OS. It seems that RtMidi, which …

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## [OpenCV - Apple Silicon](https://discourse.libcinder.org/t/opencv-apple-silicon/2090)

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**Author:** [@sherwood](https://discourse.libcinder.org/u/sherwood)\
**Replies:** 3\
**Last updated:** [February 2, 2024, 4:51pm UTC](https://discourse.libcinder.org/t/opencv-apple-silicon/2090 "2024-02-02T16:51:22Z")

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I’m having a difficult time using opencv with cinder on an apple silicon computer. I’m using cinder 0.9.3, a 2023 M2 Pro Macbook Pro, Ventura 13.6.2, Xcode 15.2, and the Cinder-OpenCV3 block. It’s skipping over the openc…

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## [Nuitrack block tracking](https://discourse.libcinder.org/t/nuitrack-block-tracking/2036)

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**Author:** [@colin](https://discourse.libcinder.org/u/colin)\
**Replies:** 1\
**Last updated:** [November 30, 2022, 4:30pm UTC](https://discourse.libcinder.org/t/nuitrack-block-tracking/2036 "2022-11-30T16:30:22Z")

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Hello I present you Nuitrack block Nuitrack is a 3D BODY (SKELETAL) TRACKING MIDDLEWARE This the block updated :slight\_smile: and the origin block Thanks

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## [Spine block animation](https://discourse.libcinder.org/t/spine-block-animation/2030)

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**Author:** [@colin](https://discourse.libcinder.org/u/colin)\
**Replies:** 1\
**Last updated:** [July 29, 2022, 9:43am UTC](https://discourse.libcinder.org/t/spine-block-animation/2030 "2022-07-29T09:43:14Z")

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Hello Someone is interested to develop the spine block for cinder :slight\_smile: Spine is dedicated to 2D animation, providing an efficient workflow for both creating amazing quality animations and integrating them int…

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## [Is the ciUI library still supported?](https://discourse.libcinder.org/t/is-the-ciui-library-still-supported/1968)

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**Author:** [@Kesav](https://discourse.libcinder.org/u/Kesav)\
**Replies:** 3\
**Last updated:** [April 11, 2022, 7:15am UTC](https://discourse.libcinder.org/t/is-the-ciui-library-still-supported/1968 "2022-04-11T07:15:38Z")

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Is the ciUI library still supported, I mean any other forks other than that of RezaAli?

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## [Cinder-PortAudio: PortAudio as an alternative audio backend](https://discourse.libcinder.org/t/cinder-portaudio-portaudio-as-an-alternative-audio-backend/1346)

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**Author:** [@rich.e](https://discourse.libcinder.org/u/rich.e)\
**Replies:** 6\
**Last updated:** [March 23, 2022, 2:59pm UTC](https://discourse.libcinder.org/t/cinder-portaudio-portaudio-as-an-alternative-audio-backend/1346 "2022-03-23T14:59:53Z")

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Hi all, I’d like to announce that we have made public cinderblock and new audio backend for ci::audio that wraps PortAudio: The main motivation for adding PortAudio as a possible backend is to gain support for Window…

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## [Interest in (or existing work on) an OpenXR block?](https://discourse.libcinder.org/t/interest-in-or-existing-work-on-an-openxr-block/1916)

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**Author:** [@totalgee](https://discourse.libcinder.org/u/totalgee)\
**Replies:** 2\
**Last updated:** [February 7, 2022, 2:26pm UTC](https://discourse.libcinder.org/t/interest-in-or-existing-work-on-an-openxr-block/1916 "2022-02-07T14:26:13Z")

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Hi there, I was just wondering if anyone has worked on integratingOpenXR with Cinder, rather than the “legacy” OpenVR and Oculus SDKs? I’ve been using the long-idle Cinder-VR project until now (with a few local updates t…

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## [Precomputing computer vision for looping video](https://discourse.libcinder.org/t/precomputing-computer-vision-for-looping-video/1891)

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**Author:** [@morphogencc](https://discourse.libcinder.org/u/morphogencc)\
**Replies:** 2\
**Last updated:** [December 1, 2021, 12:55am UTC](https://discourse.libcinder.org/t/precomputing-computer-vision-for-looping-video/1891 "2021-12-01T00:55:10Z")

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I’m working on a project where I’m going to have some looping video, and I’m using CV to perform object detection on each frame and get the centroids and size of each found object in each frame. It’s performing a bit sl…

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## [Extracting Frame from Cinder-WMFVideo](https://discourse.libcinder.org/t/extracting-frame-from-cinder-wmfvideo/1848)

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**Author:** [@morphogencc](https://discourse.libcinder.org/u/morphogencc)\
**Replies:** 6\
**Last updated:** [August 19, 2021, 11:46pm UTC](https://discourse.libcinder.org/t/extracting-frame-from-cinder-wmfvideo/1848 "2021-08-19T23:46:52Z")

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I’m trying to extract individual frames from Cinder-WMFVideo so I can run some CV algorithms on each frame. I’m a bit shaky on how exactly the WMF Decoder works, but it looks like generally the decoding is happening on …

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## [Cinder-WMFVideo with C++17 and VS2019](https://discourse.libcinder.org/t/cinder-wmfvideo-with-c-17-and-vs2019/1814)

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**Author:** [@morphogencc](https://discourse.libcinder.org/u/morphogencc)\
**Replies:** 7\
**Last updated:** [May 13, 2021, 7:11pm UTC](https://discourse.libcinder.org/t/cinder-wmfvideo-with-c-17-and-vs2019/1814 "2021-05-13T19:11:08Z")

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I’ve been trying to get the WMFVideo block to work with C++17 and VS2019 as a x64 build, but with little luck so far… Based off of a previous thread, I went into linkedlist.h and changed: const Node \*pNode to typenam…

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## [3d positioning of text with Cinder-SdfText](https://discourse.libcinder.org/t/3d-positioning-of-text-with-cinder-sdftext/1811)

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**Author:** [@morphogencc](https://discourse.libcinder.org/u/morphogencc)\
**Replies:** 0\
**Last updated:** [April 23, 2021, 9:30pm UTC](https://discourse.libcinder.org/t/3d-positioning-of-text-with-cinder-sdftext/1811 "2021-04-23T21:30:27Z")

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Does anyone have experience with positioning text in 3d using the SdfText block? Right now I’m able to manually position each character in 2d for text effects using getGlyphPlacementsWrapped(): mGlyphMap = mSdfText-\>ge…

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## [Cinder + Kinectv2 via KCB2 compile error](https://discourse.libcinder.org/t/cinder-kinectv2-via-kcb2-compile-error/1743)

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**Author:** [@johnratius](https://discourse.libcinder.org/u/johnratius)\
**Replies:** 3\
**Last updated:** [November 19, 2020, 9:33pm UTC](https://discourse.libcinder.org/t/cinder-kinectv2-via-kcb2-compile-error/1743 "2020-11-19T21:33:20Z")

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I want to get started with Cinder and my Kinect for Windows v2. Compiling my own project or any sample projects provided by Cinder-KCB2 results in this compilation error: 1\>D:\\Developer\\Libraries\\Cinder-0.9.3\\blocks\\Ci…

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## [Blocks site is down](https://discourse.libcinder.org/t/blocks-site-is-down/1737)

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**Author:** [@carles](https://discourse.libcinder.org/u/carles)\
**Replies:** 1\
**Last updated:** [October 26, 2020, 1:12pm UTC](https://discourse.libcinder.org/t/blocks-site-is-down/1737 "2020-10-26T13:12:36Z")

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Hello, There is something wrong with the bolks site: http://blocks.braitsch.io/ "TypeError: Cannot read property ‘find’ of undefined at Object.exports.getRepositoriesPopular (/root/site/blocks/server/model/database.…

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## [Cinder Imgui on windows](https://discourse.libcinder.org/t/cinder-imgui-on-windows/1718)

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**Author:** [@Kesav](https://discourse.libcinder.org/u/Kesav)\
**Replies:** 10\
**Last updated:** [September 27, 2020, 5:20am UTC](https://discourse.libcinder.org/t/cinder-imgui-on-windows/1718 "2020-09-27T05:20:09Z")

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Where can I get the imgui block for cinder? Will it work in windows?

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## [Cinder-OpenCV on Linux/Ubuntu](https://discourse.libcinder.org/t/cinder-opencv-on-linux-ubuntu/1678)

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**Author:** [@apekshaav](https://discourse.libcinder.org/u/apekshaav)\
**Replies:** 4\
**Last updated:** [July 21, 2020, 6:14am UTC](https://discourse.libcinder.org/t/cinder-opencv-on-linux-ubuntu/1678 "2020-07-21T06:14:48Z")

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Hi, I’d like to know how to build the Cinder-OpenCV package on a Linux machine (I’m using Ubuntu 18.04). I’m new to Cinder and a project I wish to build requires Cinder-OpenCV. The README on the GitHub page doesn’t prov…

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## [Does Cinder save Cmake platform definitions to be used in blocks?](https://discourse.libcinder.org/t/does-cinder-save-cmake-platform-definitions-to-be-used-in-blocks/1645)

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**Author:** [@Kino](https://discourse.libcinder.org/u/Kino)\
**Replies:** 2\
**Last updated:** [May 6, 2020, 10:43pm UTC](https://discourse.libcinder.org/t/does-cinder-save-cmake-platform-definitions-to-be-used-in-blocks/1645 "2020-05-06T22:43:55Z")

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Hi, I’m making a Cinder block on top of libnfc for NFC applications. I want to make it cross-platform using libcinder’s Cmake ecosystem. The block needs to link to the static libnfc.a file which is located on a path depe…

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## [Machine learning libtorch](https://discourse.libcinder.org/t/machine-learning-libtorch/1614)

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**Author:** [@Malfunkn](https://discourse.libcinder.org/u/Malfunkn)\
**Replies:** 0\
**Last updated:** [February 11, 2020, 5:45pm UTC](https://discourse.libcinder.org/t/machine-learning-libtorch/1614 "2020-02-11T17:45:20Z")

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I’m working on another machine learning block for cinder, this time, using libtorch… the c++ api for pytorch. I have it successfully running in cinder but I’d like to add more before I upload it. Apparently, one can co…

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## [GigE camera SDKs / Cinderblocks (Blackfly, Allied Vision etc)](https://discourse.libcinder.org/t/gige-camera-sdks-cinderblocks-blackfly-allied-vision-etc/1558)

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**Author:** [@Craigson](https://discourse.libcinder.org/u/Craigson)\
**Replies:** 8\
**Last updated:** [January 21, 2020, 6:03pm UTC](https://discourse.libcinder.org/t/gige-camera-sdks-cinderblocks-blackfly-allied-vision-etc/1558 "2020-01-21T18:03:16Z")

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Has anyone worked with GigE vision cameras lately? Wondering if there are any stable cinderblocks out there? I worked with @lucas’s cinder-vimba block a while back, but that’s nearly 4 years old and I remember having is…

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## [CinderOpenCV build failed](https://discourse.libcinder.org/t/cinderopencv-build-failed/1043)

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**Author:** [@knoland](https://discourse.libcinder.org/u/knoland)\
**Replies:** 4\
**Last updated:** [December 1, 2019, 11:22pm UTC](https://discourse.libcinder.org/t/cinderopencv-build-failed/1043 "2019-12-01T23:22:37Z")

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I’m on MacOS, I created a new project using TinderBox, added the OpenCV library, and tried to build, but got 10 errors from the CinderOpenCV.h file. Unknown type name 'Vec2f'; did you mean 'cv::Vec2f'? Use of undeclared…

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## [FPS drop using Syphon](https://discourse.libcinder.org/t/fps-drop-using-syphon/1590)

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**Author:** [@couleurs](https://discourse.libcinder.org/u/couleurs)\
**Replies:** 2\
**Last updated:** [November 16, 2019, 10:54pm UTC](https://discourse.libcinder.org/t/fps-drop-using-syphon/1590 "2019-11-16T22:54:37Z")

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Hi folks, I’m starting to use Syphon and its Recorder app to capture a video of the output of my Cinder app. Thanks to https://github.com/gaborpapp/Cinder-Syphon I’ve been able to get setup pretty easily with a Syphon se…

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## [FFmpeg movie writer](https://discourse.libcinder.org/t/ffmpeg-movie-writer/1577)

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**Author:** [@gabor\_papp](https://discourse.libcinder.org/u/gabor_papp)\
**Replies:** 0\
**Last updated:** [October 14, 2019, 4:29pm UTC](https://discourse.libcinder.org/t/ffmpeg-movie-writer/1577 "2019-10-14T16:29:37Z")

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I’m working on a FFmpeg based movie writer. It relies on the command line FFmpeg and send audio and video to it through pipes. Works in real-time and capable of recording audio as well. It builds on the work of Tim Scaff…

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## [Cinder-GstWebRTC](https://discourse.libcinder.org/t/cinder-gstwebrtc/1573)

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**Author:** [@petros](https://discourse.libcinder.org/u/petros)\
**Replies:** 1\
**Last updated:** [October 4, 2019, 2:58pm UTC](https://discourse.libcinder.org/t/cinder-gstwebrtc/1573 "2019-10-04T14:58:10Z")

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Hey All, Wanted to share some experiments I have been doing lately on Pixel Streaming with Cinder through GStreamer and WebRTC. The main motivation is the ability to have remote servers doing all the heavy-weight rende…

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## [Cairo on Windows vs 2017 140 or 141](https://discourse.libcinder.org/t/cairo-on-windows-vs-2017-140-or-141/1165)

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**Author:** [@gschomburg](https://discourse.libcinder.org/u/gschomburg)\
**Replies:** 5\
**Last updated:** [September 23, 2019, 11:17am UTC](https://discourse.libcinder.org/t/cairo-on-windows-vs-2017-140-or-141/1165 "2019-09-23T11:17:18Z")

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Has anyone gotten Cairo working on Windows with 140 or 141? I know there’s a few other posts floating around on here on this topic from over a year ago. If anyone has got it running I’d love some pointers. thanks

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## [CinderBlock - FullDome rendering for planetariums](https://discourse.libcinder.org/t/cinderblock-fulldome-rendering-for-planetariums/226)

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**Author:** [@sharkbox](https://discourse.libcinder.org/u/sharkbox)\
**Replies:** 3\
**Last updated:** [June 3, 2019, 3:18pm UTC](https://discourse.libcinder.org/t/cinderblock-fulldome-rendering-for-planetariums/226 "2019-06-03T15:18:35Z")

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Hey all, I recently did a project in a 70 foot planetarium (more on that soon) and wrote some code to handle fulldome style fisheye rendering. I just finished pulling it out and wrapping it into a block. The README goe…

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## [Mixed 2d and 3d drawing with Cinder-WMFPlayer](https://discourse.libcinder.org/t/mixed-2d-and-3d-drawing-with-cinder-wmfplayer/1486)

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**Author:** [@morphogencc](https://discourse.libcinder.org/u/morphogencc)\
**Replies:** 5\
**Last updated:** [April 22, 2019, 3:03pm UTC](https://discourse.libcinder.org/t/mixed-2d-and-3d-drawing-with-cinder-wmfplayer/1486 "2019-04-22T15:03:11Z")

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Hey all – I’m trying to use the popular WMFPlayer block to playback video and texture map objects with video. However, I’m finding that drawing the video on top of a 3d scene (to show what the source material looks lik…

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## [Skeleton Tracking](https://discourse.libcinder.org/t/skeleton-tracking/1405)

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**Author:** [@luisArandas](https://discourse.libcinder.org/u/luisArandas)\
**Replies:** 9\
**Last updated:** [March 26, 2019, 8:24pm UTC](https://discourse.libcinder.org/t/skeleton-tracking/1405 "2019-03-26T20:24:22Z")

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Hello and good day. I’ve been struggling the last days into being able to put skeleton tracking in Cinder. I even have the repository for depth cameras https://github.com/jing-interactive/Cinder-DepthSensor which seems…

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## [Cereal vectors of structs](https://discourse.libcinder.org/t/cereal-vectors-of-structs/1447)

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**Author:** [@Malfunkn](https://discourse.libcinder.org/u/Malfunkn)\
**Replies:** 2\
**Last updated:** [March 17, 2019, 6:09am UTC](https://discourse.libcinder.org/t/cereal-vectors-of-structs/1447 "2019-03-17T06:09:48Z")

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I recently started using Cinder’s Cereal block, instead of the Xml block for saving and loading data. I find it way easier to maintain. Love it. But I’m having a hard time figuring out how to save and load custom vect…

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## [WMFVideoPlayer crashing after recent Windows Security Update](https://discourse.libcinder.org/t/wmfvideoplayer-crashing-after-recent-windows-security-update/1464)

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**Author:** [@peterobbin](https://discourse.libcinder.org/u/peterobbin)\
**Replies:** 0\
**Last updated:** [March 15, 2019, 7:34pm UTC](https://discourse.libcinder.org/t/wmfvideoplayer-crashing-after-recent-windows-security-update/1464 "2019-03-15T19:34:17Z")

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We encountered a specific crashing error with WMFVideoPlayer starting on March 14th. After investigation, it is caused by a recent Windows Security Update(KB4489899). Link: https://support.microsoft.com/en-us/help/448989…

[Next page](https://discourse.libcinder.org/c/cinderblocks/9.md?page=1)