// Copyright (c) 2017 The Regents of the University of California.
// All rights reserved.
//
// Permission is hereby granted, without written agreement and without
// license or royalty fees, to use, copy, modify, and distribute this
// software and its documentation for any purpose, provided that the above
// copyright notice and the following two paragraphs appear in all copies
// of this software.
//
// IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
//
// THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
// CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
// ENHANCEMENTS, OR MODIFICATIONS.
//
/**
* Display an image.
*
* @module @accessors-modules/image-display
* @author Christopher Brooks
* @version $$Id$$
*/
// Stop extra messages from jslint. Note that there should be no
// space between the / and the * and global.
/*globals console, exports, require */
/*jshint globalstrict: true */
"use strict";
// We use installIfMissingThenRequire(), which is defined in
// nodeHost.js to install certain packages if they are missing.
// To replicate, use:
// rm -rf node_modules/opencv
// (cd $PTII/org/terraswarm/accessor/accessors/web/net/test/auto; node ../../../hosts/node/nodeHostInvoke.js net/test/auto/SerialLoopbackNumber)
var nodeHost = require('@accessors-hosts/node');
var cv;
try {
cv = nodeHost.installIfMissingThenRequire('opencv');
} catch (error) {
console.error("Failed to require the opencv module. See http://accessors.org/accessors/wiki/Notes/OpenCV.")
}
var namedWindow;
exports.ImageDisplay = function (name) {
namedWindow = new cv.NamedWindow('Video', 0)
};
///////////////////////////////////////////////////////////////////////////////
//// displayImage
/** Display an image on the console.
* @param image The image
*/
exports.ImageDisplay.prototype.displayImage = function (image) {
namedWindow.show(image);
// FIXME: not sure about this, but node_modules/opencv/examples/mat-normalize.js has it
namedWindow.blockingWaitKey(0, 50);
};