Math Is Fun Forum

Daniel123

Member

Registered: 2007-05-23

Posts: 663

Luca's birthday

I seem to remember luca saying his birthday was around this time.. I think I may have missed it though.

Anyway, Happy Birthday Luca, whenever it was

luca-deltodesco

Member

Registered: 2006-05-05

Posts: 1,470

Re: Luca's birthday

it was on the 15th thanks anyways ^^

im now 17

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The Beginning Of All Things To End.
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John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: Luca's birthday

Ides of March

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igloo myrtilles fourmis

MathsIsFun

Administrator

Registered: 2005-01-21

Posts: 7,713

Re: Luca's birthday

Happy Birthday, luca! What is your current project?

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"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

luca-deltodesco

Member

Registered: 2006-05-05

Posts: 1,470

Re: Luca's birthday

I've been working on too  many things over the last few months to write them all down.

I built a new ray tracer a little while back. had full CSG, multi texturing, multi normal mapping, property mapping for mapping reflectivity etc accross a surface, so you could have a sphere lets say with a square pattern accross of of being totally reflective, and partially reflective. heightmap terrain, refraction. And most importantly, Photon mapping for global illumination.

showing property mapping : http://www.ngup.net/view?file=samp11.jpg - the pattern on inner cube
showing heightmap terrain and also some CSG, normal mapping, reflections : http://www.ngup.net/view?file=terr3.jpg - notice the torus that has been cut from the terrain lol.
fun with CSG : http://www.ngup.net/view?file=csg6.jpg : torus intersected with a cylinder and double cone
first lighting : http://www.ngup.net/view?file=lig2.jpg : 4 spot lights, specular highlights, reflections, refractions

photon mapping : http://www.ngup.net/view?file=5730820_phot8.jpg : a small spherical light in centre. the box is partially refractive, the sphere partially reflective, normal mapping : note indirect lighting obviously, but also colour bleeding.

And then i sort of stopped working on it before adding in proper caustic mapping

------------- AS3 physics engine.

http://www.ngup.net/view?file=9625903_wehey.swf

Not the most stable of things, stopped working on it again : Any convex polygon, circles, fast broadphase collision detection. The terrain is built using another utility i made that from the stage, you can draw an outline of the terrain, and then using the utility, at runtime have it traced around, and converted into a set of a convex polygons that will work with the engine.

------------- Fluid Dynamics

First attempt with fluid dynamics, 200x200 grid being used for the simulation - (the left and right side are same simulation rendered seperately) Left side in red is the fluid itself as a vector field. The right side is rendering a density moving in the fluid. - there are 9 sources of density and force acting on the fluid around the edges of the grid that you can guess where they are

http://www.ngup.net/view?file=img1.jpg
http://www.ngup.net/view?file=img2.jpg Here, rendering size is doubled, and a new rendering on right shows the path of particles in the fluid. In this one the mouse is acting a sink hole, sucking things towards and around it.

Last edited by luca-deltodesco (2008-03-21 21:59:38)

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The Beginning Of All Things To End.
The End Of All Things To Come.