Line
mainprogram  mline.f
subroutine  line3d (lasl, r, g, b, po)
Description: This program draws a line in giving coordinate and color of sequence of points, and in connecting sequence of points in the one stroke. 

Input variable:
  lasl : The number of sequence of points
  r : The red value [0,1]
  g : The green value [0,1]
  b : The blue value [0,1]
  po (3*lasl) : The coordinate of sequence of points (x, y, z) is given in the order 

Drawing example: mline.wrl