.OUTPUT FILE: SUR002
[Enter file that will contain the shaded surface
representation]
.INTERPOLATION FACTOR: 1
[If the surface representation was interpolated to a
larger size, enter the factor by which the image was
interpolated. Internally, the values contained in the input
file are multiplied by this factor.]
.ILLUMIN. ANGLE, INTENSITY: 45, 0.5
[added the seceond light with 45 degree and 0.5 intensity]
.MIX FACTOR: 0.6
[A part of the surface representation's Z-buffer is added
to the image containing only the cosine shading. If
A1, A2, A3 are the three points of the facet used to
calculate the inclination, the mixing is calculated using
the formula:
F=COS-MIX*(A1+A2+A3)/(3*(FMAX-FMIN))+MIX
with F being the resulting value, COS the cosine of the
inclination, MIX the Mix Factor, and FMAX and FMIN the
maximum and minimum of the surface representation image
(Z-buffer).]