$$ % abbreviations \gdef\inf{\infty} \gdef\w{\omega} \gdef\W{\Omega} %--- % roman variables \gdef\d{\mathrm{d}} % differential, dx \gdef\o{\mathrm{o}} % outgoing, ie w_o \gdef\i{\mathrm{i}} % incoming, ie w_i \gdef\p{\mathrm{p}} % point p %--- % differentials \gdef\dx{\d x} \gdef\dy{\d y} \gdef\dw{\d \w} \gdef\dW{\d \W} % --- % trigonometry \gdef\costheta{\cos \theta} \gdef\costhetai{\cos \theta_\i} \gdef\costhetao{\cos \theta_\o} \gdef\cosphi{\cos \phi} \gdef\sintheta{\sin \theta} \gdef\sinphi{\sin \phi} \gdef\abscostheta{\lvert \costheta \rvert} \gdef\abscosthetai{\lvert \costhetai \rvert} \gdef\abscosthetao{\lvert \costhetao \rvert} % --- % differential areas \gdef\dAperp{\d A^\perp} \gdef\dA{\d A} % --- % radiometric quantities \gdef\Li{L_\i} \gdef\Lo{L_\o} % --- % differential radiometric quantities \gdef\dE{\d E} \gdef\dLo{\d \Lo} % --- % differential angles \gdef\dtheta{\d\theta} \gdef\dTheta{\d\Theta} \gdef\dphi{\d\phi} \gdef\dPhi{\d\Phi} % --- % solid angles \gdef\wi{\w_\i} \gdef\wo{\w_\o} % --- % differential solid angles \gdef\dwi{\d\wi} \gdef\dwo{\d\wo} \gdef\domega{\d \w} \gdef\dOmega{\d \W} \gdef\domegaperp{\d\w^\perp} $$

About me

Hi, my name is Nate Park. I’m an origami artist, video game programmer, and rock climber. Origami I have been designing and folding super complex origami for over 10 years. I used to go by OrigamiNate during the snkhan.co.uk/flickr era. More recently you can find me as OrigummyNate in the Origami-dan discord. I’ve exhibited my models in the OrigamiUSA NYC Convention. My favorite subjects to fold are nature and fantasy. ...

August 21, 2026

Gamedev

Most code demos run in my game engine at https://github.com/Kaminate/Tac. Radiosity Stochastic jacobi radiosity, with average radiance baked into vertex color (no final gather). Raytrace Cpu raytracer with reflections, refractions, and depth of field IBL A slide from a presentation I gave about 2014 Karis split-sum approximation. Raymarch Voxelization Torque Skinning Texture Repetition iq’s method Shadows Normal Map Cube map, phong, reflections, normal map Julia Fractal ...

August 21, 2026

Origami

Each model is folded by me from a single square of paper, without cuts. All works are original designs unless otherwise specified. Ryu zin Ryu zin 3.5 Ryu zin 3.5 designed by Satoshi Kamiya, folded from 140 cm double tissue. Started folding on June 1, 2026 and finished on July 15, 2026. Exhibited at 2026 NYC OrigamiUSA Convention. Ryu zin 1.2 Ryu zin 1.2 designed by Satoshi Kamiya, folded from 60 cm unryu. ...

August 21, 2026

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August 21, 2026

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