Diff of /trunk/test/vr.diderot

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	revision 36, Thu Feb 11 01:04:40 2010 UTC	revision 39, Thu Feb 11 16:58:32 2010 UTC
#	Line 3	Line 3
3	// volume rendering example in Diderot	// volume rendering example in Diderot
4	//	//
5
6	input string dataFile;	input string dataFile;          // name of dataset
7		input real stepSz;              // size of steps
8		input vec<3> light;
9		input int wid = 640;
10		input int ht = 480;
11
12	image<3> img = load (dataFile);	image[3] img = load (dataFile);
13
14		field#1[3] F = convolve (bspln3, img);
15
16		actor RayCast (int row, int col)
17		{
18		vec<3>      dir = (real(row), real(col), 0.0);
19		vec<3>      pos = (0.0, 0.0, 0.0);
20		real        t = 0.0;
21		real[4]     color = (0.0, 0.0, 0.0, 0.0);
22
23		update
24		{
25		vec<3> pt = pos + t*dir;
26		t = t + stepSz;
27		vec<3> g = (D F)@pt;
28		color = over(color, phong(light, g, txf(F@pt)));
29		if (color[3] >= 0.999)
30		stabilize;
31		}
32
33		}

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Legend: Removed from v.36   changed lines   Added in v.39

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