Polygonal line : gradation

mainprogram�@lineset2.f
subroutine  line2 (ln, po, sco, eco)

Description: This program draws a polygonal line in giving double end coordinate and color ( gradation ) of the segment, and in connecting the coordinate in one stroke in the order. 
	
Input variable:
  ln : The data number
  po(3*ln) : The coordinate of the point (x, y, z) is given in the order
  sco : The color in the start of the gradation (color code)
  eco : The color in the end of the gradation (color code)
  color code (1: white 2: yellow 3: mazenda 4: red 5: sian 6: green 7: blue )

Drawing example: lineset2.wrl