Plugin curve-bend and GimpDoubleArray

Applications
1

I want to use plugin-curve bend in a python script.

How do I specify the GIMPDoubleArrays for the points?

What I have is this:

procedure = Gimp.get_pdb().lookup_procedure('plug-in-curve-bend')
config = procedure.create_config()
config.set_property('run-mode', Gimp.RunMode.NONINTERACTIVE)
config.set_property('image', image)
config.set_core_object_array('drawables', [the_layer])
config.set_property('rotation', 0.0)
config.set_property('smoothing', True)
config.set_property('antialias', True)
config.set_property('work-on-copy', False)
config.set_property('curve-type', "smooth")
# config.set_property('curve-border', ["upper", "lower"]) # ?
config.set_property('upper-point-x', [0, 0.14, 0.5, 0.84, 1])  # GimpDoubleArray ?
config.set_property('upper-point-y', [0.5, 0.38, 0.31, 0.38, 0.5])
config.set_property('lower-point-x', [0, 0.14, 0.5, 0.84, 1])
config.set_property('lower-point-y', [0.5, 0.38, 0.31, 0.38, 0.5])
config.set_property('upper-val-y', 256)
config.set_property('lower-val-y', 256)
result = procedure.run(config)
success = result.index(0)
bent_layer = result.index(1)

And I get this:

TypeError: could not convert [0, 0.14, 0.5, 0.84, 1] to type ‘GimpDoubleArray’ when setting property GimpProcedureConfig-plug-in-curve-bend.upper-point-x

So how to do this? Have tried to find an example, without success.
Please help.

2

Still nobody has an idea?

Dear devs: please don’t leave us (non-professional) coders alone with those riddles.

You’ve made this API and know what to do, so please let us know.

Thank you.

3

Just be patient. One day or two is completely normal for a public forum. People have lives outside of the internet too.

Anyway I looked a bit. It looks like this might be a problem for bindings. Maybe we’ll have to make a special function for bindings (same as gimp_procedure_config_set_core_object_array() and gimp_procedure_config_set_color_array).

Or much simpler, we should be able to create a gimp_double_array_new() which would hide the typing shenanigans.

Normally the simple way would be to make a Gimp.Array.new() then fill in your double values with Gimp.DoubleArray.set_values(a, [0, 0.14, 0.5, 0.84, 1], False). All of which works. But then when I try to set_property this GimpArray, we’d get a typing issue from Gimp.Array to Gimp.DoubleArray because the binding doesn’t really get it’s the same thing.

I don’t have time to look further at it right now, but so far it feels like this can only be done in C and it’s broken in the bindings. A report would be appreciated so that we don’t forget looking at it.

4

Yes, sure. Will do soon.