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/mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-content/plugins/wordpress-seo/src/presentations/abstract-presentation.php on line 43 Deprecated: Creation of dynamic property Yoast\WP\SEO\Presentations\Indexable_Presentation::$title is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-content/plugins/wordpress-seo/src/presentations/abstract-presentation.php on line 64 Deprecated: Creation of dynamic property Yoast\WP\SEO\Presentations\Indexable_Presentation::$source is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-content/plugins/wordpress-seo/src/presentations/abstract-presentation.php on line 64 crocdialer https://crocdialer.com computer/science/art Thu, 23 Jun 2022 08:08:22 +0000 en-US hourly 1 https://wordpress.org/?v=5.8.9 Bloccupy Revisited https://crocdialer.com/bloccupy-revisited/ Thu, 16 Aug 2018 14:33:50 +0000 Deprecated: Creation of dynamic property WP_Term::$cat_ID is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 378 Deprecated: Creation of dynamic property WP_Term::$category_count is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 379 Deprecated: Creation of dynamic property WP_Term::$category_description is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 380 Deprecated: Creation of dynamic property WP_Term::$cat_name is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 381 Deprecated: Creation of dynamic property WP_Term::$category_nicename is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 382 Deprecated: Creation of dynamic property WP_Term::$category_parent is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 383 http://crocdialer.com/?p=137 I recently updated <Bloccupy> it’s an interactive media installation with kinect/video input, which I built for Projektil, Zurich in 2015. It wouldn’t run anymore for various minor reasons. plain old code-rot and no devs around to prevent it. while getting rid of some dust and freshing it all up, I did a nice screencast I […]

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]]> I recently updated <Bloccupy>

it’s an interactive media installation with kinect/video input, which I built for Projektil, Zurich in 2015.

It wouldn’t run anymore for various minor reasons. plain old code-rot and no devs around to prevent it.

while getting rid of some dust and freshing it all up, I did a nice screencast I wanted to share 🙂

 

I also wanted to summarize the basic building blocks and concept used for Bloccupy.

As most graphics-related things I did in the past years, it relies on crossplattform C++ and OpenGL.

 

pin toy metaphor

 

The underlying metaphor for the concept is a pin-toy.

Like in other projects I really fancy the procedure of downsampling something close to the point where it becomes unrecognizable and exploring this borderland.

To achieve the blocky look and elevation behaviour I manipulated a simple array of points in 3D space.

Those are fed into a GLSL geometry-shader and transformed into cuboids.

As input we used a raw depth-camera image in combination with video-footage, the update of point positions is performed with a couple of OpenCL kernels.

The depth values and/or color information from video is mapped onto the elevation of the cuboids and their color.

The scene is shaded and lit with a couple of point-light sources, to be able to visualize the intricate details of the resulting geometry.

 

colormap

optionally a colomap can be applied to better highlight different elevations.

I used this one, called “hot iron”:

 

results

nothing more to add, enjoy this outtake from Carl Sagan’s Cosmos, rendered by the Bloccupy Engine.

 

hope you like it,

croc

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]]> KinskiGL now using Physically Based Rendering (PBR) https://crocdialer.com/kinskigl-now-using-physically-based-rendering-pbr/ https://crocdialer.com/kinskigl-now-using-physically-based-rendering-pbr/#respond Sat, 12 May 2018 12:30:42 +0000 Deprecated: Creation of dynamic property WP_Term::$cat_ID is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 378 Deprecated: Creation of dynamic property WP_Term::$category_count is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 379 Deprecated: Creation of dynamic property WP_Term::$category_description is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 380 Deprecated: Creation of dynamic property WP_Term::$cat_name is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 381 Deprecated: Creation of dynamic property WP_Term::$category_nicename is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 382 Deprecated: Creation of dynamic property WP_Term::$category_parent is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 383 http://crocdialer.com/?p=104 recently I invested some time to catch up with current state-of-the-art realtime rendering techniques. after digesting the siggraph 2013 course notes from Epic I started implementing a new material and lighting system within kinskiGL. helpful resources along the way were also the “Physics and Math of Shading” presentation by Naty Hoffman and “Realtime Rendering” by Tomas Akenine-Moeller. […]

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]]> recently I invested some time to catch up with current state-of-the-art realtime rendering techniques.

after digesting the siggraph 2013 course notes from Epic I started implementing a new material and lighting system within kinskiGL.

helpful resources along the way were also the “Physics and Math of Shading” presentation by Naty Hoffman and “Realtime Rendering” by Tomas Akenine-Moeller.

  • the new material uses a metal/roughness/ambient occlusion workflow, the lighting system was enhanced with support for Image based Lighting (IBL).
  • kinskiGL now reads .hdr radiance-HDR maps (provided as equi-rectangular panoramas or cubemaps) and uses those to replace the ambient term in the shading equation.
  • the shading model reflects the common shift from Phong/Blinn-Phong to a generic BRDF as described by Cook/Torrance (A Reflectance Model for Computer Graphics).
  • kinskiGL now also supports the glTF-2.0 model format as plain or binary file.

 

results

finally some screenshots to round up the post.

all models are lit by the .hdr maps in the background alone, though the lighting model plays nicely with classic point/spot/directional lights.

 

sources

most models are from Khronos’ collection of glTF-2.0 testmodels: github.com/KhronosGroup/glTF-Sample-Models

the background HDR maps used can be found here: http://www.hdrlabs.com/sibl/archive.html

the application used is a 3Dviewer, which is a sample application of my KinskiGL framework: github.com/crocdialer/KinskiGL

 

conclusion

it’s 2018, looks like we made some progress recently.

 

hope you like it,

croc

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]]> https://crocdialer.com/kinskigl-now-using-physically-based-rendering-pbr/feed/ 0 Neophyt 2014 – Procedural Growth https://crocdialer.com/neophyt-2014/ https://crocdialer.com/neophyt-2014/#respond Tue, 06 Mar 2018 16:46:27 +0000 Deprecated: Creation of dynamic property WP_Term::$cat_ID is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 378 Deprecated: Creation of dynamic property WP_Term::$category_count is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 379 Deprecated: Creation of dynamic property WP_Term::$category_description is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 380 Deprecated: Creation of dynamic property WP_Term::$cat_name is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 381 Deprecated: Creation of dynamic property WP_Term::$category_nicename is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 382 Deprecated: Creation of dynamic property WP_Term::$category_parent is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 383 http://crocdialer.com/?p=50 in 2014 I was looking into ways of simulating organic growth, with the first profound discovery being that plants are in fact fractals, yeah! they have self-similarity and their growth is governed by a set of basic rules. thus, to generate something plant-like you’re actually generating fractals. after reading some literature on the topic, namely “The […]

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]]> in 2014 I was looking into ways of simulating organic growth, with the first profound discovery being that plants are in fact fractals, yeah!

they have self-similarity and their growth is governed by a set of basic rules.

thus, to generate something plant-like you’re actually generating fractals.

after reading some literature on the topic, namely “The Algorithmic Beauty of Plants” by Aristid Lindenmayer, I started to write my own L-System implementation in C++, which you can find here, as part of my KinskiGL graphics-toolkit.

the main reason not to use something like SpeedTree or existing implementations for your favourite game-engine, was the required low-level flexibility and a deep fascination and curiosity for the topic.

I wanted to completely understand the underlying tech and have total control over it, so the results would look different and more unique than something produced with existing e.g. Unity-addons.

after all, I wasn’t trying to model realistic plants, but rather something organic, bizarre and alien, yet believable.

 

first fractals

the first tests were aimed at the reproduction of some well-known fractals, to make sure I got everything correct in my L-System.

after that I started to experiment with different types of plant-like patterns.

 

shading experiments

followed by the development of different shading techniques to achieve an organic and interesting look.

and even weirder …

 

the installation

working at Projektil in Zurich at the time, these experiments led to an interactive media-installation coined Neophyt, which was shown at the Lethargy Festival 2014.

it was basically a high-striker you would see at Oktoberfest or the like. you hit a small platform with a hammer.

the harder the hit, the higher the score, perfect for drunk people 🙂

we replaced the analog components with an accelerometer-based sensor I built to measure the impact-force, the hammer was real.

based on both the impact-force and some degree of randomness, a plant would be created.

the creation of the rules for the structure of this plant was quite time-consuming, since you’re facing an inverse problem.

you can’t just start with the end-product in mind, but rather have to capture the growth pattern that will eventually create it.

the higher the force the more complex and evolved the plant generated would be.

bigger, higher branching-depths, more sub-materials etc.

on a large brick chimney we projected the resulting organisms, let them grow and decay again.

the decay was modelled to achieve the look and feel of it “crystallizing” and then breaking apart.

this was done using an OpenCL-based particle simulation and some fancy GLSL geometry shaders.

we also projected the achieved score in vertical letters and combined everything with cheap video-animations.

I voted against additional video-layers, since I’m a purist and wanted to focus on great looking plants.

the event was quite stressful for me and my dog, but in the end was worth it.

here is the documentation video by Projektil:

hope you like it,

Croc

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]]> https://crocdialer.com/neophyt-2014/feed/ 0 Psycho Manege 2015 https://crocdialer.com/psycho-manege-2015/ https://crocdialer.com/psycho-manege-2015/#respond Sat, 03 Mar 2018 12:36:18 +0000 Deprecated: Creation of dynamic property WP_Term::$cat_ID is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 378 Deprecated: Creation of dynamic property WP_Term::$category_count is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 379 Deprecated: Creation of dynamic property WP_Term::$category_description is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 380 Deprecated: Creation of dynamic property WP_Term::$cat_name is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 381 Deprecated: Creation of dynamic property WP_Term::$category_nicename is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 382 Deprecated: Creation of dynamic property WP_Term::$category_parent is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 383 http://crocdialer.com/?p=40 in 2015, while working at projektil.ch in Zurich, I developed a piece of software for live-perfomances and visuals with the working title <Psycho Manege>. the concept-idea was to control a multi-stage round-robin filled with animated and audio-reactive 3D models via gamepads and midi-controllers. the output of the program would be projected on a 360 degree stage, […]

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]]>

in 2015, while working at projektil.ch in Zurich,

I developed a piece of software for live-perfomances and visuals with the working title <Psycho Manege>.

the concept-idea was to control a multi-stage round-robin filled with animated and audio-reactive 3D models via gamepads and midi-controllers.

the output of the program would be projected on a 360 degree stage, mapped with 4 projectors on several layers of semi-transparent cloth.

following are some screen-captures of earlier proof-of-concept sequences.

focus of these tests was to showcase the audio-reactive vertex-distortion, implemented by generating a simplex-noise texture on the gpu and feeding that into the vertex shader-stage to move vertices along their normal vector, a.k.a. displacement mapping. not particulary tricky but it sounds and looks cool 🙂

and featuring myself:

this work led to a two evening, bombastic live-visual performance together with my colleague Moritz Flachsmann at Lethargy Festival 2015, Zurich.

basically I was performing the animal round-robin, adding/removing/controlling the 3D models and parameters, while we fed the output into Modul8, where Moritz took over the 2D domain.

we were quite happy with our work-flow and results. here’s Projektil’s documentary video of the event, cut by Cadu.

thank you Moritz and Projektil for this one!

 

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]]> https://crocdialer.com/psycho-manege-2015/feed/ 0 —-low life led—- 2018 hammer demo in Schwarz Matt https://crocdialer.com/low-life-led-2018-hammer-demo-in-schwarz-matt/ https://crocdialer.com/low-life-led-2018-hammer-demo-in-schwarz-matt/#respond Wed, 28 Feb 2018 14:02:21 +0000 Deprecated: Creation of dynamic property WP_Term::$cat_ID is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 378 Deprecated: Creation of dynamic property WP_Term::$category_count is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 379 Deprecated: Creation of dynamic property WP_Term::$category_description is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 380 Deprecated: Creation of dynamic property WP_Term::$cat_name is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 381 Deprecated: Creation of dynamic property WP_Term::$category_nicename is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 382 Deprecated: Creation of dynamic property WP_Term::$category_parent is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 383 http://crocdialer.com/?p=28 proof of concept for my most recent work. low life led is a scalable and weatherproof LED-toolkit. arbitrary video content can be streamed via network to an array of microcontrollers, which in turn control the leds. the leds are sealed in watertight acrylic tubes and attached with a simple, custom bus system. this allows for […]

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proof of concept for my most recent work. low life led is a scalable and weatherproof LED-toolkit.

arbitrary video content can be streamed via network to an array of microcontrollers, which in turn control the leds.

the leds are sealed in watertight acrylic tubes and attached with a simple, custom bus system. this allows for chaining without significant voltage drops.

 

in this demo the ability to calibrate the individual LED positions is showcased.

to make the setup quick and easy I built a calibration tool with the option to auto-calibrate with a camera.

the calibration sequence looks like this and created above results.

the software is based on my kinskiGL toolkit and can be found here:

https://github.com/crocdialer/KinskiGL

and the project itself here:

https://github.com/crocdialer/kinski_projects/tree/master/led_grabber

https://github.com/crocdialer/kinski_projects/tree/master/led_proxy

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]]> https://crocdialer.com/low-life-led-2018-hammer-demo-in-schwarz-matt/feed/ 0 namaste traveler … https://crocdialer.com/greetings-traveler/ https://crocdialer.com/greetings-traveler/#respond Tue, 27 Feb 2018 18:19:24 +0000 Deprecated: Creation of dynamic property WP_Term::$cat_ID is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 378 Deprecated: Creation of dynamic property WP_Term::$category_count is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 379 Deprecated: Creation of dynamic property WP_Term::$category_description is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 380 Deprecated: Creation of dynamic property WP_Term::$cat_name is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 381 Deprecated: Creation of dynamic property WP_Term::$category_nicename is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 382 Deprecated: Creation of dynamic property WP_Term::$category_parent is deprecated in /mnt/web021/d1/46/51330146/htdocs/WordPress_01/wp-includes/category.php on line 383 http://crocdialer.com/?p=6 stay tuned till I fill this page with some of the projects I did in the recent years …

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stay tuned till I fill this page with some of the projects I did in the recent years …

The post namaste traveler … appeared first on crocdialer.

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