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Real time ray tracing. | Indefinite Seven
https://indefiniteseven.wordpress.com/2013/05/08/real-time-ray-tracing
Real time ray tracing. It’s practically a tradition. New hardware generation, new feature set. Ask the age old question:. Is real time ray tracing practical yet. No, no it’s not. Is the answer that comes back every time. Or actual proper in-viewport production rendering tracers like Brigade / Octane. So I had to try it. My experience of ray tracing had been quite limited up til then. I had used signed distance field tracing in a 64k, some primitive intersection checking and metaball tracing. Ofek's ...
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3D Scanner and 3D Printer | Indefinite Seven
https://indefiniteseven.wordpress.com/2013/12/21/3d-scanner-and-3d-printer
3D Scanner and 3D Printer. For some reasons, I’ve started to gather some information about both 3d printer and 3d scanner. Since the revolution is still going on, price, spec and method still have the chance to take a leap. I’ll start with a simple category rule, personal(consumer) and commercial(professional). And kickstarter is playing a really important role where some affordable professional gadgets are born . Personal means affordable price and a lot of tester out there. 8211; Low accuracy. 8211; Me...
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Plot lorenz attractor | Indefinite Seven
https://indefiniteseven.wordpress.com/2012/11/26/plot-lorenz-attractor
Tags: explicit euler method. Had a homework to plot trajectory of Lorenz attractor (Lorenz equation). Tried to a simple implementation first and found similar code from matplotlib. But ACCURACY is a problem here. Forward Euler method is used to integrate over time,. As it tends to add energy to system ( which also cause in physical simulation ),. So the system here is more likely to go chaos than it supposed to be. Dx / dt = sigma ( y – x ). Dy / dt = x ( r – z ) – y. Dz / dt = xy – b * z. Notify me of n...
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Markov chain (1) | Indefinite Seven
https://indefiniteseven.wordpress.com/2012/11/26/markov-chain-1
I found it’s still a difficult thing to learn a new concept. Try to describe one with following question. Hope this help me to understand and remember them better. Overall image first. seems a huge topic to learn. 1 What is markov chain? A mathematical system that undergoes transitions from one state to another,. Between a finite or countable number of possible states. [wikipeida]. A system can be represented by a Finite State Machine with probabilistic transition. 2 When to use markov chain? 2 Hidden ma...
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Install mayavi – Compile VTK with python support | Indefinite Seven
https://indefiniteseven.wordpress.com/2012/09/04/install-mayavi-compile-vtk-with-python-support
Install mayavi – Compile VTK with python support. Categories: Library and Framework. It was really a shame that it took me so much time just build several libraries. In order to use a python lib named mayavi, I have to compiled and downloaded a bunch of stuff. Maybe I should turn to the enhanced python at first). Then, here’s the problems I encountered. 1 VTK Visual Studio2010 Windows opengl. During compile VTK with python support,. First, you DO need tcl/tk for generate solution file by cmake. Leave a R...
