c3d - Contour with 3D surfaces

Name

c3d — Contour with 3D surfaces

Syntax

c3d i | v | s | n | l [col] [map] [csh] [sav] [bsu] [bou] [nor] [eli limit]

Description

Map 3D grid (cube) with contour surfaces representing the same iso value.

Arguments

i increment

Enter increment value

v _c_val1_ [_c_val2_ _c_val3_ ...]

Enter distinct contour level values

s start increment stop

Enter start increment stop values

n number_of_levels

Enter number_of_levels

col [red | gre |...]

Use the same colour [red | gre |...] on all surfaces.

map

Map the iso surfaces wth the map command

csh

Color the iso surfaces with shifting colors.

sav

Color the iso surfaces with shifting colors.

csh

Surface(s) will be saved in ^c3d0, ^c3d1, ^c3d2, ....

bsu

Boundary surface around defined data.

nor

Smooth display with normal (Gouraud) vectors.

eli limit

Eliminate isosurfaces with number of points lower than limit.

Examples

Ex.1: Contouring of 3d surfaces in a cube

        # generate cube and display 3D contours
        mak ran 11   ;#  make 11 random points
        gr3 12 12 12 ;#  make cube of dimension 12 x 12 x 12
        dis opa .3   ;#  display cube with opacity .3
        c3d n 4      ;#  contour 4 iso surfaces

The above example produces this image.

3D contours in a cube

Reference Manual