Jig drag loop

[gswifort]

If .sampler() returns kNoChange then the .worldDraw() method shouldn't be executed?

https://help.autodesk.com/view/OARX/2025/ENU/?guid=GUID-E0A88178-CEE6-4983-950C-119CED7BA474

from pyrx import Ed, Ge, Gi, command


class Jig(Ed.DrawJig):
    def __init__(self, base_point=Ge.Point3d(0, 0, 0)):
        super().__init__()
        self.base_point = base_point

    def sampler(self):
        self.setUserInputControls(Ed.UserInputControls.kNullResponseAccepted)
        ds, _ = self.acquirePoint(self.base_point)
        if ds == Ed.DragStatus.kNormal:
            print("no change")
            return Ed.DragStatus.kNoChange
        return ds

    def update(self):
        print("update False")
        return False

    def worldDraw(self, wd: Gi.WorldDraw):
        print("worldDraw")
        return True


@command
def jigtest():
    jig = Jig()
    res = jig.drag()
    print("done", res)

# output:
'''
no change
worldDraw
no change
worldDraw
(...)
'''

[CEXT-Dan]

Interesting! Note, the DrawJig does not actually exist in ARX, it’s a custom object. I added based off this. So, there may be different behavior, though I have not tested with a normal jig.

I did attach the debugger to confirm the sample return is forwarded back to C++. I do not alter any timings or behavior, I just forward and return the calls

[CEXT-Dan]

maybe you can use a pattern like

class Jig(Ed.DrawJig):
    def __init__(self, base_point=Ge.Point3d(0, 0, 0)):
        super().__init__()
        self.base_point = base_point
        self.ds = Ed.DragStatus.kNormal

    def sampler(self):
        self.setUserInputControls(Ed.UserInputControls.kNullResponseAccepted)
        self.ds, _ = self.acquirePoint(self.base_point)
        if self.ds == Ed.DragStatus.kNormal:
            print("no change")
            self.ds = Ed.DragStatus.kNoChange
        return self.ds

    def update(self):
        flag = self.ds == Ed.DragStatus.kNormal
        if flag:
            print("update False")
        return flag

    def worldDraw(self, wd: Gi.WorldDraw):
        if self.ds == Ed.DragStatus.kNormal:
            print("worldDraw")
        return True  # returning false jumps to viewportDraw

[CEXT-Dan]

Ed.Jig seems to behave as the diagram, So the draw must be coming from somewhere else. it should be in the message to tell the jig to draw the rubber-band line

[CEXT-Dan]

I thought about changing DrawJig to match the behavior of Jig, but I’ve decided I think it offers more flexibility the way it is. Programmers could have a mixture of objects that are drawn or not using self.ds = Ed.DragStatus.kNormal

[gswifort]

that's ok, but it would be nice if there was some information somewhere that this behavior is different - it's true, DrawJig is not available in ARX, but its interface is almost identical so the assumption that it behaves the same may be common :)

[CEXT-Dan]

.NET has a similar class, I want to check the behavior in that API. I’ve been using the class for years in C++ and never noticed 😁 I went back and checked my code and I have a class where I draw custom rubberband lines and the objects, it would look funny if my rubberband lines didn’t update.

At least I will document the sample