POLYMESH STRUCTURE   			2/94



Here is a sample det file,ascii version, and the associated values in
the polymesh data structure after reading in the object. The object is
a pyramid. The ascii version was created by the command
asc edge/samples/pyramid2.det
The asc command without the -a option adds explanatory words like Point,
Poly, etc. The binary version of this data object is ...
edge/samples/pyramid.det. 


:::: edge/samples/pyramid.det ::::
Detail file (det)
5 points 5 polygons
Point   1:            0          0.5            0
Point   2:          0.5         -0.5          0.5
Point   3:         -0.5         -0.5          0.5
Point   4:          0.5         -0.5         -0.5
Point   5:         -0.5         -0.5         -0.5
Poly   1: 3 verts      1     2     3
Poly   2: 3 verts      1     4     2
Poly   3: 4 verts      2     4     5     3
Poly   4: 3 verts      1     5     4
Poly   5: 3 verts      1     3     5



******************** polymesh structure values ********************

num_pnts :  5
num_polys : 5


pnts: (an array containing the actual pnts of the object)
	[0]       0.0          0.5          0.0
    	[1]       0.5         -0.5          0.5
    	[2]      -0.5         -0.5          0.5
    	[4]       0.5         -0.5         -0.5
    	[5]      -0.5         -0.5         -0.5


size_polys : ( an array containing  the number of points in each poly)
	[0]	3
	[1]	3
	[2]	4
	[3]	3
	[4]	3


indx_polys : ( an array containing for each polygon indices into the pnts
	      array of the points that make up the polygon (in order))
     __				     __
    /	[0] 	0		    /	[10]	0
P1 <	[1]	1		P4 <	[11]	4
    \__	[2]	2		    \__	[12]	3
     __				     __
    /	[3]	0		    /	[13]	0
P2 <	[4]	3		P5 <	[14]	2
    \__	[5]	1		    \__	[15]	4
     __
    /	[6]	1
P3 / 	[7]	3
   \	[8]	4
    \__	[9]	2







poly_ptr : (an array containg for each polygon the entry number in the
	    indx_polys array where the entries for that polygon begin)

	[0]	 0
	[1]	 3
	[2]	 6
	[3]	10
	[4]	13

This in combination with the sample program should help you understand
how the polymesh structure works.