EnglishFrenchSpanish

Ad


OnWorks favicon

clipgv - Online in the Cloud

Run clipgv in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command clipgv that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


clip - Clip an OOGL object against planes or other surfaces

SYNOPSIS


clip [-v axisx,y,z,...]
[-g value-or-point] [-l value-or-point]
[-s nstrips[,fraction]] [-e]
[-sph centerx,y,z,...] [-cyl centerx,y,z,...]
[ooglfile]

DESCRIPTION


Clip, adapted from Daeron Meyer's ginsu module, allows clipping an OOGL object against
planes, spheres, or cylinders from the UNIX command line. Its input can come from a file
or standard input; output is written to standard output.

Options specify a function of space position; the output is the portion of the object
where the function is greater or less than some given value, or the portion lying between
two values. Alternatively, an object can be sliced into equally-spaced strips. Objects
may be of any dimension (but see the BUGS section).

Options are:

-g value-or-point

-l value-or-point
Select the portion of the object where the function is greater than (-g) or less
than (-l) the given value. If both are specified, the result is the portion of the
object satisfying both conditions.

If, rather than a single number, the argument to -l or -g is a point (a series of
x,y,z,... values separated by commas, with no embedded blanks), then the clipping
surface is one chosen to pass through that point.

-v axisx,y,z,...
Specifies a direction in space. For planar clipping (the default), it's the plane
normal direction; the clipping function is the inner product between the direction
vector and the point on the object. For cylindrical clipping, -v specifies the
direction of the cylinder's axis; the clipping function is the distance from the
axis.

-sph centerx,y,z,...
Clip against spheres centered on x,y,z,.... The clipping function is the distance
from the given center. Coordinates must be separated by commas without intervening
spaces.

-cyl centerx,y,z,...
Clip against cylinders with an axis passing through centerx,y,z,..., with axis
direction given by the -v option. The clipping function is the distance from the
axis.

-s nslices[,fraction]
Clip an object into a series of nslices ribbons spanning its entire extent -- the
range of function-values over the object. Part of each ribbon is omitted; the
fraction, default .5, sets the width of the visible part of a ribbon compared to
the ribbon period. There are a total of (nslices+fraction-1) ribbon periods across
the object, so e.g. -s 2,.5 slices the object into equal thirds, omitting the
middle third. The output OOGL object is a LIST of OFFs, one per ribbon.

-e Don't emit a clipped OOGL object, just print two numbers, listing the minimum and
maximum function values for the object. If -g or -l clipping options are
specified, the object is clipped before determining the function range. If none of
the object remains, clip prints "0 0".

EXAMPLES


To extract the portion of an object lying below the x+y+z=1 plane:

clip -l 1 -v 1,1,1 file.oogl > portion.oogl

To extract the portion of an object lying in the positive octant and below the x+y+z=1
plane, we can pipe multiple instances of clip together to find the intersection of several
half-spaces:

clip -g 0 -v 1,0,0 file.oogl | \
clip -g 0 -v 0,1,0 | \
clip -g 0 -v 0,0,1 | \
clip -l 1 -v 1,1,1 > portion.oogl

To find the region lying between two surfaces (either above one and below the other, or
below the first and above the second), say the planes 2x + y -.5z = 1 and y + 2z = 0:

echo "{ LIST"
clip -v 2,1,-.5 -g 1 file.oogl | clip -v 0,1,2 -l 0
clip -v 2,1,-.5 -l 1 file.oogl | clip -v 0,1,2 -g 0
echo "}"

We use pipelines to compute intersections, and a LIST to form their union.

Use clipgv online using onworks.net services


Free Servers & Workstations

Download Windows & Linux apps

  • 1
    Sardi
    Sardi
    Sardi is a complete restyling and
    optimisation of svg code. 6 choices for
    your applications and 10 kind of folders
    to use in your file manager. The sardi
    icons...
    Download Sardi
  • 2
    LMMS Digital Audio Workstation
    LMMS Digital Audio Workstation
    LMMS is a free cross-platform software
    which allows you to produce music with
    your computer. If you like this project
    consider getting involved in the project
    h...
    Download LMMS Digital Audio Workstation
  • 3
    FreeRTOS Real Time Kernel (RTOS)
    FreeRTOS Real Time Kernel (RTOS)
    FreeRTOS is a market-leading real-time
    operating system (RTOS) for
    microcontrollers and small
    microprocessors. Distributed freely
    under the MIT open source lice...
    Download FreeRTOS Real Time Kernel (RTOS)
  • 4
    Avogadro
    Avogadro
    Avogadro is an advanced molecular
    editor designed for cross-platform use
    in computational chemistry, molecular
    modeling, bioinformatics, materials
    science and ...
    Download Avogadro
  • 5
    XMLTV
    XMLTV
    XMLTV is a set of programs to process
    TV (tvguide) listings and help manage
    your TV viewing, storing listings in an
    XML-based format. There are utilities to
    do...
    Download XMLTV
  • 6
    strikr
    strikr
    Strikr Free Software project. Artifacts
    released under a 'intent based'
    dual license: AGPLv3 (community) and
    CC-BY-NC-ND 4.0 international
    (commercial)...
    Download strikr
  • More »

Linux commands

Ad