NAME

OpenWindows Demonstrations

SYNOPSIS

Demos menu item in the Programs submenu.

OVERVIEW

The Demos menu item on the root menu runs hyperview, a hypertext browser runnning a stack called DemoNavigator. This program allows you to browse around a hierarchy of X11 and NeWS demonstration programs. These programs are intended to demonstrate NeWS and X11 graphics and user interaction capabilities.

DESCRIPTION

The Demos are started by selecting the Demo item on the Programs pull-right menu on the root menu.

The NeWS Toolkit

PostScript Previewer
    Color
     Peter
     Tiger
     Parrot
     Chip
    Black and White
     Golfer
     Rose
     Shuttle
     Nozzle
     Porsche
     Butterfly
     Hawaii
     Usamap
     Worldmap
    Multipage
     Encapsulated PostScript
     Overview
NeWS Rendering
    Escher's Fish
    World
    SpaceShip
    Lines
    Spiral
    Pie Chart
    Wide Lines
    X Logo
    Rubber-band
Imaging
    Text/Fonts
    Scaled Text
    Images

    Magnifier
Animation
    Round Clock
    Mona Eyes
    Icosahedron
    IcoScreenSaver
    PolyScreenSaver
    Flying Logos
    Tetris
    Wink
Colors
    Color Names
    Colormap
    Color Wheel
    Fader
Journaling
Calculator

The menu items are described below.

The NeWS Toolkit: POSTSCRIPT Previewer

Color
     The following color demos:

Peter

Peter Gabriel drawn by David Lavallee using
Painter.

Tiger

Bengal Tiger from Adobe Illustrator.

Parrot

     Colorful parrot from Adobe Illustrator.

Chip Custom Asic from a cad package.

Black and White

The following black and white demos:

Golfer

The famous golfer from Adobe Illustrator.

Rose A vector drawing of a rose with a poem.

Shuttle

AutoCAD cutaway drawing of a space shuttle.

Nozzle

AutoCAD machanical drawing of a fire hose nozzle.

Porsche

Adobe Illustrator Porsche 911T.

Butterfly

A vector drawing of a butterfly.

Hawaii

Map of Hawaii from SunDraw.

Usamap

Map of USA from Brian Reids netmap.

Worldmap

Map of the world from Brian Reids netmap.

Multipage

The following Multipage demos:

Encapsulated PostScript

The EPSF document from Adobe.

Overview

The NeWS Overview document done in Frame.

The NeWS Toolkit: NeWS Rendering

Escher's Fish
     Draws the famous Square Limit created by M.  C. Escher.
     The demo is a 260-line recursive NeWS program that
     draws a large number of vectors.  You can use the menu
     to vary the complexity of this drawing.

World

Displays a geographic projection of the western hemi-
sphere.

SpaceShip

A demonstration of NeWS' vector-drawing capabilities.
The demo draws four spaceships inside its window, com-
posed of over 7,000 vectors.

Lines

Creates a window with a line pattern inside of it.  You
can can alter the number of lines drawn from the pop-up
menu inside the window.    On color screens, the line
pattern is displayed in a rainbow of colors.

Spiral

Draws a simple spiral pattern.

Pie Chart

Draws a business pie chart with slices of the pie
filled with varying colors.

Wide Lines

A simple sketchpad that demonstrates NeWS' wide line

drawing capabilities.  Click left to move the current
point and middle to draw a line, curve or arc to any
point.  The menu allows you to to change all of the
possible options in the POSTSCRIPT language graphics
context which affect wide line drawing.

X Logo

Draws an X logo based on that by Danny Chong.

Rubber-band

Demonstrates how responsive NeWS can be when interacting with you. Click and drag the Point button to drag out a vector, rectangle or cubic spline curve. After a point is placed, you may adjust it by selecting it with the middle button.

The NeWS Toolkit: Imaging

Text/Fonts
     Writes text inside a window in several styles.  The
     right button brings up a pop-up menu from which you can
     select the font under the Font pull-right, the point
     size, the colors, and the text to be shown.  The text
     shown can be either some sample text or a list of all
     characters in the chosen font.

Scaled Text

Demonstrates NeWS' ability to scale text to an arbi-
trary size using the fill smart outline fonts of the
imbedded OpenFonts technology of X11/NeWS.

Images

Combines all of the image demos from NeWS 1.1 into one
demo.  The Images submenu lets you choose which image
to manipulate while the Modes submenu lets you choose
the mode you wish to view the image in.  Scaled Image
fits the image into the frame, whatever size you make
it.  Pan Image renders the image in its native size and
lets you pan it around by pressing and dragging the
left mouse button.  If you "lose" the image, pressing
the middle button will bring it back.  Bounce Image
will "automatically" pan the image around, bouncing off
of the window borders.  Tiled Image will render the
image as many times as it takes to fill the window
frame.  Rotated image will render the image at several
rotations around the clock.  Spin image will render the
image in a user defined square at an arbitraty orienta-
tion.  Press the left mouse button and drag out any
square and the image will repaint inside it.  The Tri-
angle, Doughnut and SunLogo Stencils all demonstrate
NeWS' POSTSCRIPT language imaging model, where all
operations including imaging can be clipped to an
arbirary "stencil".  The brightness and contrast menus
can be used to adjust these viewing parameters using
the POSTSCRIPT language transfer function.

Magnifier

The magnifier expands the bits under the cursor loca-
tion.  The zoom level can be controlled by the menu.
You can stop the snapshots of the cursor by pressing
the middle button.  If you press left button in the
magnifier window when it is stopped it will restart.

The NeWS Toolkit: Animation

Round Clock
     A clock written entirely in the POSTSCRIPT language.
     It uses unorthodox methods of getting the time of day
     from the system, and overrides almost every possible
     method in the frame and canvas classes in the NeWS
     toolkit.

Mona Eyes

Represents half of an all-nighter and the lighter side
of NeWS programming.  The code is mostly stolen from
NeWS 1.1's Eyecosahedron, the ideas are stolen from
Monty Python's Flying Circus.

Icosahedron

Displays a bouncing 20 sided regular solid with the
hidden lines removed.  The menu switches between
rendering directly to the framebuffer and buffering the
rendering through an image.  On machines with fast
graphics hardware the former will be faster.

IcoScreenSaver

This is the same demo as above, but it is covers the
whole screen and goes away with a click of the mouse
button.

PolyScreenSaver

Another screen saver, which is modeled after the Mesa
program "Poly".

Flying Logos

An observation of the one-to-one-ness of NeWS and the
Sun Logo.

Tetris

A straightforward port of the popular Game.

Wink Displays a pair of eyes in the middle of the screen,
     one of which winks at you.

The NeWS Toolkit: Colors

Color Names

     Shows you the correspondence between color names in the
     color dictionary as implemented by NeWS/colors.ps and
     their colors on the screen.  This program uses
     scrollbars to access all the colors.

Colormap

Displays the installed colormap. It also installs its own Hue ramp on Enter and uninstalls it on Exit.

Color Wheel

Draws a wheel of colors inside a window.  You can use
the menu to switch between gray and color, and to vary
the number of shades, the saturation, and the intensity
of the colors displayed.

Fader

Uses colormap animation to fade between two different
strings with an interesting visual effect.  The menu is
used to change the fading rate and to pick a different
set of strings to fade.

Journaling

A demonstration of the Record and Play features of the NeWS event distribution system.

Calculator

The simple four-function calculator in Reverse Polish
Notation style.

FILES

$XNEWSHOME/etc/NeWS/hyperdecks/xnewsdemo.hv

the hyperview(1) deck which has the hypertext data for the DemoNavigator.

$XNEWSHOME/demo/* All of the demo programs run by the DemoNavigator.

SEE ALSO

psh(1), pageview(1), hyperview(1)

NeWS Programmer's Guide

PostScript Language Reference Manual , Adobe Systems Inc.,
Addison-Wesley

TRADEMARK

POSTSCRIPT is a registered trademark of Adobe Systems Inc.