Travis build is broken

[elemoine]

The problem may be related to my latest merge: #2040. I'll have a look.

https://travis-ci.org/openlayers/ol3/builds/24439585

[elemoine]

The error occurs when checking the kml-earthquakes example:

2014-05-05 09:47:04,419 check-examples: phantomjs bin/check-example.js build/hosted/HEAD/examples/kml-earthquakes.html?mode=advanced
JavaScript ERROR: INDEX_SIZE_ERR: DOM Exception 1: Index or size was negative, or greater than the allowed value.

TRACE:

-> file:///home/travis/build/openlayers/ol3/build/hosted/HEAD/build/ol.js: 233 (in function "Jl")

-> file:///home/travis/build/openlayers/ol3/build/hosted/HEAD/build/ol.js: 258 (in function "Wl")

-> file:///home/travis/build/openlayers/ol3/build/hosted/HEAD/build/ol.js: 294

-> file:///home/travis/build/openlayers/ol3/build/hosted/HEAD/build/ol.js: 299

-> file:///home/travis/build/openlayers/ol3/build/hosted/HEAD/build/ol.js: 350

-> file:///home/travis/build/openlayers/ol3/build/hosted/HEAD/build/ol.js: 159

-> file:///home/travis/build/openlayers/ol3/build/hosted/HEAD/build/ol.js: 5

-> file:///home/travis/build/openlayers/ol3/build/hosted/HEAD/build/ol.js: 55

2014-05-05 09:47:05,028 check-examples: clean

2014-05-05 09:47:05,028 pake: check-examples: Command '['phantomjs', 'bin/check-example.js', 'build/hosted/HEAD/examples/kml-earthquakes.html?mode=advanced']' returned non-zero exit status 1

The command "./build.py integration-test" exited with 1.

Problem is that I'm not able to reproduce locally.

[elemoine]

I managed to reproduce the bug locally, but it does not always occur. It would occur at one run (build.py check-examples) but not at the next one. Annoying. I don't know how to fix this at this point.

[tschaub]

Maybe the map viewport has a different size in the Phantom run and there is a drawImage call with a negative value that Webkit doesn't like.

[elemoine]

Thanks Tim. I'll look at it again tomorrow.

[elemoine]

This reveals an actual bug in our Canvas code. The kml-earthquakes example does not work in FireFox:

IndexSizeError: Index or size is negative or greater than the allowed amount

The problem is related to the symbol size as calculated in ol.style.Circle.