Uploads from davebollinger, tagged processingorg

D20110617 (lo)

nobody@flickr.com (davebollinger) — Fri, 17 Jun 2011 09:50:17 -0700

bumpy plane

nobody@flickr.com (davebollinger) — Tue, 21 Dec 2010 09:56:07 -0800

"everything needs lattice + smooth"

simple way to create a parametric surface akin to the "custom creation" example provided with hemesh:

class BumpyPlaneEvaluator implements HET_UVEvaluator {
public WB_Point evaluate(double u, double v) {
u = u * 10 - 5;
v = v * 10 - 5;
return new WB_Point(u,v,Math.sin(u*v)/5);
}
public boolean uWraps() { return false; }
public boolean vWraps() { return false; }
}

(you could, obviously, parameterize the x/y/z scalings instead of hardcoding)

torus

nobody@flickr.com (davebollinger) — Mon, 20 Dec 2010 13:01:06 -0800

davebollinger posted a photo:

some standard "recipes" to plug in, wrt method described here

// where a is minor radius (radius of tube)
// where c is major radius (offset of tube from origin)
double aCosVPlusC = a * Math.cos(v) + c;
double x = Math.cos(u) * aCosVPlusC;
double y = Math.sin(u) * aCosVPlusC;
double z = a * Math.sin(v);
return new WB_Point(x,y,z);

HEC_UVParametric

nobody@flickr.com (davebollinger) — Fri, 17 Dec 2010 15:59:17 -0800

davebollinger posted a photo:

purely for the code geeks out there, a new "creator" for Frederik Vanhoutte's HEMesh library, it works much like Andreas Koeberle's SurfaceLib library, evaluates uv equations to form 3d meshes - in fact, i figured i'd start with this trianguloid trefoil since i had contributed an implementation of it to SurfaceLib earlier, but you could do lots of other shapes (superellipsoids, spherical harmonics, etc) just by implementing new "evaluators" for those equations code to figure out more, provided as is, target audience knows who they are ;-)

further 'graphite' tests

nobody@flickr.com (davebollinger) — Thu, 16 Jun 2011 14:38:11 -0700

davebollinger posted a photo:

pixel-peep the original size if you don't know what's going on here

D20110615

nobody@flickr.com (davebollinger) — Thu, 16 Jun 2011 09:03:45 -0700

davebollinger posted a photo:

D20110612's

nobody@flickr.com (davebollinger) — Tue, 14 Jun 2011 16:28:35 -0700

davebollinger posted a photo:

D20110610B

nobody@flickr.com (davebollinger) — Fri, 10 Jun 2011 16:37:43 -0700

davebollinger posted a photo:

D20110610A

nobody@flickr.com (davebollinger) — Fri, 10 Jun 2011 13:46:15 -0700

davebollinger posted a photo:

D20101223A (1k)

nobody@flickr.com (davebollinger) — Thu, 23 Dec 2010 16:10:18 -0800

davebollinger posted a photo:

D20101223B (1k)

nobody@flickr.com (davebollinger) — Thu, 23 Dec 2010 16:10:16 -0800

davebollinger posted a photo:

extruding

nobody@flickr.com (davebollinger) — Thu, 23 Dec 2010 10:19:44 -0800

davebollinger posted a photo:

"everything is a circle revolved around a circle"

so...evaluators evaluating evaluators...yikes, this is getting confusing, looks something like this:

YZHalfCircleEvaluator path1 = new YZHalfCircleEvaluator().setRadius(0.5);
XYWavyCircleEvaluator form1 = new XYWavyCircleEvaluator().setRadius(0.2).setFrequency(5);
ExtrudeEvaluator extr1 = new ExtrudeEvaluator().setEvaluators(path1,form1);
mesh1 = new HE_Mesh(new HEC_UVParametric(this).setEvaluator(extr1).setUVSteps(40,100));

YZHalfCircleEvaluator path2 = new YZHalfCircleEvaluator().setRadius(1.1);
XYWavyCircleEvaluator form2 = new XYWavyCircleEvaluator().setRadius(0.2).setFrequency(6);
ExtrudeEvaluator extr2 = new ExtrudeEvaluator().setEvaluators(path2,form2);
mesh2 = new HE_Mesh(new HEC_UVParametric(this).setEvaluator(extr2).setUVSteps(40,100));

CleliesEvaluator path3 = new CleliesEvaluator().setRadius(0.8).setRatio(3f/5f);
XYCircleEvaluator form3 = new XYCircleEvaluator().setRadius(0.02);
ExtrudeEvaluator extr3 = new ExtrudeEvaluator().setEvaluators(path3,form3);
mesh3 = new HE_Mesh(new HEC_UVParametric(this).setEvaluator(extr3).setUVSteps(400,4));

everything's all fairly special-purpose right now, need to parameterize and consolidate (like a single flat circle evaluator, with parameters for range, axes, etc)

i have no idea where i'm going with this, btw, just exploring :)

torus knots

nobody@flickr.com (davebollinger) — Thu, 23 Dec 2010 08:12:23 -0800

davebollinger posted a photo:

"everything is knot a torus"

(tho, not all of these qualify as knots, unknots included as well. so, clearly: not everything is knot a torus)

en.wikipedia.org/wiki/Torus_knot

hilbert greeble

nobody@flickr.com (davebollinger) — Wed, 22 Dec 2010 14:24:46 -0800

davebollinger posted a photo:

"not everything is not a torus"

D20101222 knot blue

nobody@flickr.com (davebollinger) — Wed, 22 Dec 2010 07:37:09 -0800

davebollinger posted a photo:

"everything is a torus AND everything is blue"

8.18 greeble

nobody@flickr.com (davebollinger) — Tue, 21 Dec 2010 12:19:28 -0800

davebollinger posted a photo:

"everything needs extrusion"

another trefoil

nobody@flickr.com (davebollinger) — Tue, 21 Dec 2010 08:49:45 -0800

davebollinger posted a video:

"everything is a torus" (inside joke ;)

deformed möbius torus

nobody@flickr.com (davebollinger) — Mon, 20 Dec 2010 11:15:41 -0800

davebollinger posted a video:

more playing with geometry...
wrt method described here

D20101208 Bin Packer

nobody@flickr.com (davebollinger) — Wed, 08 Dec 2010 11:12:47 -0800

davebollinger posted a photo:

how to turn a simple chop saw task into a slightly more involved programming task

(why? just for amusement, really, as the problem was simple enough that i'd already laid it out 'in my head' and cut it before it had occurred to me as a programming diversion. with any luck though, it might actually turn out to be useful when it comes time to frame out the kids' "fort" project next summer! :) )

D20101119B

nobody@flickr.com (davebollinger) — Fri, 19 Nov 2010 14:31:38 -0800

davebollinger posted a photo: