Move outline to glsl

[thejohnhoffer]

I've moved the outline rendering from the canvas to WebGL with modifications to the fragment shader.

[thejohnhoffer]

It seems I've broken the rendering of the pie-chart centroids (OR-mode).
I'll try to resolve that before marking as ready for review.

[thejohnhoffer]

It seems I've broken the rendering of the pie-chart centroids (OR-mode). I'll try to resolve that before marking as ready for review.

Ah, it seems centroids are broken before my changes:

// Retrieve color (FIXME - need to integrate into viewer manager)

[thejohnhoffer]

I've filed the OR-mode bug as a separate issue. I'll see if switching centroid mode to WebGL solves that problem.

Solved my issue with centroids!:

Ah, my issue stems from attempting to perform gating on a channel that is not selected.

[thejohnhoffer]

I've marked this PR as ready for review... I can handle the centroid rendering in another PR.

[kruegert]

renders very fast. This is awesome!

currently draws whole cells:

Could it draw outlines? This would be important to see the underlying image data.

Getting error:
gl not defined when changing color and color mapping slider on the left channel panel:

adding a this solves it:
const size_2fv = [this.gl.canvas.height, this.gl.canvas.width];

[thejohnhoffer]

[thejohnhoffer]

I've moved more of the logic to the shaders... there's one more (edit: two more )more rendering optimization(s) I'd like to make before reviewing for the merge. Edit: Also, there's a rendering issue for pie-charts when rendering 4+ markers.

[thejohnhoffer]

I've solved the pie chart issue for 4+ markers... there is still an optimization on the ordering of selection kesy.

[thejohnhoffer]

[thejohnhoffer]

I've updated the image viewer so that it doesn't render images when the gating parameters are loading from the server. One last step may be to add a loading icon so the users know when the client is waiting on the server.