![](\"https:\/\/thumbs.mic.com\/MmFhZjYwY2U2MyMvTWFneU5vcU5wTU81TGlCYndXemdabnJwaEI4PS84eDE4NDo5NDZ4Nzc2LzgwMHg0NTAvZmlsdGVyczpmb3JtYXQoanBlZyk6cXVhbGl0eSg4MCkvaHR0cHM6Ly9zMy5hbWF6b25hd3MuY29tL3BvbGljeW1pYy1pbWFnZXMvZWYyMDQ4NWExNzQ5YzMzNjY4OWNmZWJlNzQ3MzU0YTY0MWMwMzY2NTI1NjQzMmExNmUyY2I4NDNiNDA2NmNhZS5qcGc.jpg\")
<\/p>\nI recently updated <Bloccupy><\/p>\n
it’s an interactive media installation with kinect\/video input, which I built for Projektil, Zurich in 2015.<\/p>\n
It wouldn’t run anymore for various minor reasons. plain old code-rot and no devs around to prevent it.<\/p>\n
while getting rid of some dust and freshing it all up, I did a nice screencast I wanted to share \ud83d\ude42<\/p>\n
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I also wanted to summarize the basic building blocks and concept used for Bloccupy.<\/p>\n
As most graphics-related things I did in the past years, it relies on crossplattform C++ and OpenGL.<\/p>\n
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The underlying metaphor for the concept is a pin-toy.<\/p>\n
Like in other projects I really fancy the procedure of downsampling something close to the point where it becomes unrecognizable and exploring this borderland.<\/p>\n
To achieve the blocky look and elevation behaviour I manipulated a simple array of points in 3D space.<\/p>\n
Those are fed into a GLSL geometry-shader and transformed into cuboids.<\/p>\n
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.<\/p>\n
The depth values and\/or color information from video is mapped onto the elevation of the cuboids and their color.<\/p>\n
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.<\/p>\n
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optionally a colomap can be applied to better highlight different elevations.<\/p>\n
I used this one, called “hot iron”:<\/p>\n
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![\"\"](\"https:\/\/crocdialer.com\/wp-content\/uploads\/2018\/08\/hot_iron.jpg\")
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