Special angles rotation moves (x,y)

[phet-steele]

Rotating while in Special Angles view will move the (x,y) values upward on some devices. Rotation speed doesn't matter, fast rotating only speeds up the process. Reset all does not fix this, only refreshing the page will. Video in iE11 Win 8.1:

Multiple devices were tested and some showed this behaviour more quickly than others. Seen on (in order of prominence): IE11 (Win 8.1, personal) Safari (OSX 10.10.5, Curie) Edge (Win 10..., Galileo) FF (Win 8.1, personal) Chrome (All above OSs)

Could not get it to happen on iPad 2 iOS 9.3 beta (Tycho), or its just very subtle. For phetsims/tasks/issues/486

Troubleshooting information: Name: ‪Trig Tour‬ URL: http://www.colorado.edu/physics/phet/dev/html/trig-tour/1.0.0-dev.19/trig-tour_en.html Version: 1.0.0-dev.19 2016-01-22 23:12:47 UTC Features missing: touch, fullscreen Flags: pointerEnabled, msPointerEnabled User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; .NET4.0E; .NET4.0C; .NET CLR 3.5.30729; .NET CLR 2.0.50727; .NET CLR 3.0.30729; GWX:DOWNLOADED; MALNJS; rv:11.0) like Gecko Language: en-US Window: 1366x643 Pixel Ratio: 1/1 WebGL: WebGL 0.94 GLSL: WebGL GLSL ES 0.94 Vendor: Microsoft (Internet Explorer) Vertex: attribs: 16 varying: 15 uniform: 512 Texture: size: 16384 imageUnits: 16 (vertex: 16, combined: 32) Max viewport: 16384x16384 OES_texture_float: true Dependencies JSON: {"assert":{"sha":"d4909677","branch":"master"},"axon":{"sha":"5a39ec57","branch":"master"},"babel":{"sha":"db982666","branch":"master"},"brand":{"sha":"48ab5fab","branch":"master"},"chipper":{"sha":"57c99807","branch":"master"},"dot":{"sha":"ddf82014","branch":"master"},"joist":{"sha":"8b666baf","branch":"master"},"kite":{"sha":"4a947119","branch":"master"},"phet-core":{"sha":"874a703d","branch":"master"},"phetcommon":{"sha":"3db92af3","branch":"master"},"scenery":{"sha":"953fe860","branch":"master"},"scenery-phet":{"sha":"778e9c76","branch":"master"},"sherpa":{"sha":"bf82eb95","branch":"master"},"sun":{"sha":"39a79196","branch":"master"},"tandem":{"sha":"5388a9e4","branch":"master"},"trig-tour":{"sha":"53c8d262","branch":"master"}}

[phet-steele]

On chromebook the (x,y) values move downward...

[jessegreenberg]

Reproduced on Windows 10 Chrome 48, but the effect is much less significant, it took ~60 rotations before I noticed.

[jessegreenberg]

This should be fixed. I tested the commit above with Windows 10 and Chrome, Edge, and Firefox, as well as iPad2 Safari. Unable to reproduce.

[jessegreenberg]

@phet-steele I have a new dev version here: http://www.colorado.edu/physics/phet/dev/html/trig-tour/1.0.0-dev.20/trig-tour_en.html

Would you be able to verify that this is fixed?

[phet-steele]

@jessegreenberg fixed!