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phetsims / neuron

"Neuron" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
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Energy Jolt Flashes When Neuron Stimulated #116

Closed elisemorgan closed 8 years ago

elisemorgan commented 8 years ago

Related to https://github.com/phetsims/tasks/issues/485

Test device: Mac, Jordan

Operating System: OS X 10.9.5

Browser: Safari 9.0.1 (9537.86.2.7.2)

Problem description: The pulse that runs down the neuron flashes/drags when the neuron is stimulated

Steps to reproduce: Stimulate neuron. Sometimes does not show unless sim is in full screen.

Severity:

Screenshots: https://drive.google.com/file/d/0B_TAL-jnJOoKeWFjTkwzTFJka00/view?usp=sharing

Troubleshooting information (do not edit): Name: ‪Neuron‬ URL: http://www.colorado.edu/physics/phet/dev/html/neuron/1.0.0-rc.2/neuron_en.html Version: 1.0.0-rc.2 2016-01-23 00:14:48 UTC Features missing: touch User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_5) AppleWebKit/601.2.7 (KHTML, like Gecko) Version/9.0.1 Safari/537.86.2 Language: en-us Window: 1358x598 Pixel Ratio: 1/1 WebGL: WebGL 1.0 (2.1 INTEL-8.28.36) GLSL: WebGL GLSL ES 1.0 (1.20) Vendor: WebKit (WebKit WebGL) Vertex: attribs: 16 varying: 15 uniform: 1024 Texture: size: 16384 imageUnits: 16 (vertex: 16, combined: 16) Max viewport: 16384x16384 OES_texture_float: true Dependencies JSON: {"assert":{"sha":"d4909677","branch":"HEAD"},"axon":{"sha":"6f3c2e01","branch":"HEAD"},"babel":{"sha":"db982666","branch":"master"},"brand":{"sha":"c9282935","branch":"HEAD"},"chipper":{"sha":"1d1d5d32","branch":"HEAD"},"dot":{"sha":"7a28b1a9","branch":"HEAD"},"griddle":{"sha":"3adb78bd","branch":"HEAD"},"joist":{"sha":"191b15a4","branch":"HEAD"},"kite":{"sha":"4a947119","branch":"HEAD"},"neuron":{"sha":"d5e13134","branch":"HEAD"},"phet-core":{"sha":"73a034c6","branch":"HEAD"},"phetcommon":{"sha":"d712ace0","branch":"HEAD"},"scenery":{"sha":"47143cdd","branch":"HEAD"},"scenery-phet":{"sha":"a7f975d1","branch":"HEAD"},"sherpa":{"sha":"be8c4fc9","branch":"HEAD"},"sun":{"sha":"64555735","branch":"HEAD"},"tandem":{"sha":"07fbe58c","branch":"HEAD"}}

jbphet commented 8 years ago

@elisemorgan - I watched the video a number of times and also tried to reproduce the issue on the same test device (Jordan). I'm not seeing it. Can you give me a bit more of a description of what you're concerned about? Feel free to drop by my office if you like - I'll have Jordan with me for the next several work days.

jbphet commented 8 years ago

@elisemorgan and I looked at this together, and basically the issue is that the frame rate on Safari bogs down a bit when the action potential is animating versus how it looks in other browsers. It's not really flashing, it's just not perfectly smooth. In my opinion, it looks acceptable, and is unlikely to distract or confuse users. I'm going to make the call and just close this, but @ariel-phet is welcome to reopen if he disagrees with my decision.

ariel-phet commented 8 years ago

I am fine with that decision.