Rhinocommon and rhinoscriptsyntax object color methods result in different outcome?

Asterisk · November 24, 2020, 5:12pm

print sc.doc.Objects.Find(objID).Attributes.ObjectColor
print rs.ObjectColor(objID)

Result:

Color [Black]
Color [White]

White is correct.

stevebaer · November 24, 2020, 3:52pm

The final displayed color depends on the ColorSource which can be from the object itself, the object’s layer, or the object’s parent in the case of a block

The rhinoscriptsyntax function figures out the actual display color while the attributes color is the color that would be used if the color source were ByObject. Use the DrawColor function in RhinoCommon to get the same result

github.com

mcneel/rhinoscriptsyntax/blob/rhino-6.x/Scripts/rhinoscript/object.py#L790


        return rhino_object.Attributes.DrawColor(scriptcontext.doc)
    color = rhutil.coercecolor(color, True)
    if rhino_objects is not None:
        for rh_obj in rhino_objects:
            attr = rh_obj.Attributes
            attr.ObjectColor = color
            attr.ColorSource = Rhino.DocObjects.ObjectColorSource.ColorFromObject
            scriptcontext.doc.Objects.ModifyAttributes( rh_obj, attr, True)
        scriptcontext.doc.Views.Redraw()
        return len(rhino_objects)
    rc = rhino_object.Attributes.DrawColor(scriptcontext.doc)
    attr = rhino_object.Attributes
    attr.ObjectColor = color
    attr.ColorSource = Rhino.DocObjects.ObjectColorSource.ColorFromObject
    scriptcontext.doc.Objects.ModifyAttributes( rhino_object, attr, True )
    scriptcontext.doc.Views.Redraw()
    return rc


def ObjectColorSource(object_ids, source=None):
    """Returns of modifies the color source of an object.

Asterisk · November 24, 2020, 5:05pm

I don’t understand why this thing is there…

Everything else is clear enough though.

stevebaer · November 24, 2020, 5:12pm

The RhinoDoc is needed to figure out the color if the source is from the object’s layer or a parent object.