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Questions tagged [quartz-composer]

Quartz Composer is a node-based visual programming language freely available to registered Apple developers for realtime processing and rendering animated 2D and 3D graphics with JavaScript scripting.

Quartz Composer is a node-based visual programming language freely available to registered Apple developers for processing and rendering animated 2D and 3D data.

Quartz Composer uses OpenGL, OpenCL (only in Mac OS X 10.6 and later), Core Image, Core Video, Core Audio, JavaScript, and other technologies to build an API and a developer tool around a simple visual programming paradigm. It used to be part of the Xcode development environment in macOS but is now a separate download named Additional Tools for Xcode.

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Is there a way to play an MP3 or aac .pls file with Quartz Composer?

I would like to play a radio stream in Quartz Composer. This would be the first step in developing a new kind of radio player with (i hope) interesting visuals to accompany the audio. Given a URL like…
golliher
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Examine Structure Keys and Values

I've been scratching my head over this for some time... how am I supposed to view the contents of a structure? Which means their keys and their corresponding values. I've been playing with the Audio Input patch a ton, and want to know how best to…
VxJasonxV
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Rearranging pixels on a video in realtime in Quartz Composer

Does anyone know a good resource related to remapping the pixels in a video in realtime using Quartz Composer? I've read through the programming guide, but it doesn't have all the information I need...thanks!
diatrevolo
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How to use a VNC source in Quartz Composer?

I know I can use video camera sources for further processing with Quartz Composer. (For example you can use the iSight's video feed to do something with that.) But is it also possible to show/use the source of a VNC server in Quartz Composer? Maybe…
Patrick
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Quartz Composer - Capture output of composition as input to another patch

I'm looking to see if there is a way to capture the entire output of a quartz composer scene, or it could even be a scene within a macro patch, and use it as the input to another patch that accepts an image. My use case is an image filter that…
lightbord
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Observe published values of Quartz Composition without using QCView and QCPatchController

I've been looking for some ways to control Quartz Composition, that is being loaded as a sublayer of a custom view inherited from NSView. NSString * compositionPath = [[NSBundle mainBundle] pathForResource:@"Test" ofType:@"qtz"]; QCCompositionLayer…
Brainman
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Quartz Composer – How to specify destination size for a Core Image filter?

I have a Quartz Composer composition using a Core Image filter that I want to produce an output image of a different size than the input. As a silly example, suppose I want to squish the image vertically by a factor of 2 using a filter like: kernel…
JWWalker
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Has 32-bit QuickTime API and Quartz Composer file support changed in macOS High Sierra?

Has something happened recently to QuickTime API support for Quartz Composer files in macOS High Sierra? I have a QTZ composition that opens fine in macOS 10.12, but fails to open in macOS 10.13. At the same time, it seems that QuickTime Player…
Dan
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Quartz Composer : can't see anything in timeline patch

I'm very close to have a nervous breakdown ... I hope you can help me I try to add a timeline patch into a Composition but when I open the Patch Information for edit the Timeline ... there's nothing, only the help text, and if I put it down, a grey…
L.K
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snapshot taken from QCView sometimes blank

I have a program playing quartz compositions in QCViews. Because the QCViews are on a secondary screen, I need to display a (smaller) copy in the main screen (kind of control screen). So I fire a timer every 0.1 seconds, take a snapshot of the…
siukurnin
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Quartz Composer Custom Image Kernel XCode 8

I'm interested in testing a custom image filter kernel using Quartz Composer. This seems like it should be possible given the docs (see Figure…
mattnedrich
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Should I create a custom VJing application based on Quartz Composer?

I'm thinking of creating a custom JVing application as a Quartz Composer composition controlled by a MIDI controller. Tempo-aware I want to use the track's tempo as data to affect the visuals - see below for details. That tempo will be input…
Blackbird
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Create flip animation with origami

How to create 3d card flip animation with Facebook origami. I have tried so much and I couldn't find a way to do this any help would be really appreciated. Please check the sample video provided on this question
Zarah Dewayne
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How do I use the current sound out as an audio input in Quartz Composer?

If I want to build a spectrum visualizer of what's currently playing on my speakers (not the line in) what do I do?
Moe
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Use Half of QCView

I feel like this should be a simple issue, but I can't figure it out. I have a QCView in my app. When I display it normally, it looks like this: QCView. But, I only want to see the top half of it, because on the bottom half I want to see what is on…
AriX
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