ReadWebField

Synopsis

An application module that reads a web-based AVS/Express field.

Input Ports

None.

Parameters

• URL UItext
• OutFile UItext
• Status UItext
• portable_toggle UItoggle
• swap_toggle UItoggle
• flip_toggle UItoggle

Output Ports

• obj DefaultObject

Description

This module accepts a web-based URL pointing at an AVS/Express field data file hosted by a WWW server. The field data file is then cached locally and read as though it were a field data type.

Input Ports

None.

Parameters

URL

Specify a valid URL address. The ReadWebField module reads and caches the contents contained at the location specified. If the URL is invalid or points to unretrievable information, the phrase " URL contains no data " appears in the Status parameter.

OutFile

The location of the URL content cache. It is also the port that is used as input to another AVS/Express data reader. The default location is /tmp/xp_out.da t, but a you can change the location at any time.

If two URLs are fetched in a row, the contents of the second URL overwrite the contents of the first URL if the location of the cache file is not changed. The OutFile  parameter receives an notify  event after every valid URL retrieval.

Status

A text field that contains status information for the current URL fetch. Messages are displayed in this field as the URL collection progresses; these messages are described in W3Cget_URL .

portable_toggle

Toggle XDR mode on/off.

swap_toggle

Turn byte swapping on/off.

flip_toggle

Flip the x-axis of the field.

Output Ports

obj

Renderable output geometry from reading the field.

Example

Examples.Graphics_Display.WebMultiView

v/gd_examp/URLread1.v

File

v/w3c.v

 




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