Odd bug of Decal API

hajime2MRG3 — Sat, 18 Jan 2025 10:22:25 GMT

Hello,

I was trying to put decals on extruded cuboids, and I found an odd bug.

Depending on the extrude length, DecalInput.tranform is ignored.

As shown in the picture below, 0.6, 0.8, 1.2 mm height are ignored.

1.0 and 1.4 mm height are correctly transformed.

import traceback import sys import pathlib import adsk.core as ac import adsk.fusion as af IMG_PATH = pathlib.Path(sys.base_prefix).absolute() / 'Python/AddInSamples/CommandSample/commands/Basic/resources/32x32.png' def run(context): app: ac.Application = ac.Application.get() try: ui = app.userInterface test_decal(app) except Exception: msg = traceback.format_exc() print(msg) if ui is not None: ui.messageBox('Failed:\n{}'.format(msg)) def should_true(x): if not x: raise Exception() def create_rectangle_profile(comp: af.Component, x: float, y: float): s = comp.sketches.add(comp.xYConstructionPlane) should_true(s.sketchCurves.sketchLines.addTwoPointRectangle( ac.Point3D.create(-1. + x, -2. + y, 0.), ac.Point3D.create(2. + x, 1. + y, 0.) )) return s.profiles.item(0) def create_cuboid_body(comp: af.Component, x: float, y: float, h: float): profile = create_rectangle_profile(comp, x, y) efs = comp.features.extrudeFeatures e_in = efs.createInput(profile, af.FeatureOperations.NewBodyFeatureOperation) e_in.setOneSideExtent( af.DistanceExtentDefinition.create( ac.ValueInput.createByReal(h) ), af.ExtentDirections.PositiveExtentDirection) ef = efs.add(e_in) return ef.bodies[0] def test_decal(app: ac.Application): # create new doc for testing _ = app.documents.add(ac.DocumentTypes.FusionDesignDocumentType) # Decal API doesn't work in DirectDesignType app.activeProduct.designType = af.DesignTypes.ParametricDesignType comp: af.Component = app.activeProduct.rootComponent mi = ac.Matrix3D.create() mi.setToIdentity() z_axis = ac.Vector3D.create(0, 0, 1) for iy in range(5): y = iy * 4 for ix in range(1, 7): ex_height = (iy + 3) * 0.2 x = ix * 4 body = create_cuboid_body(comp, x, y, ex_height) face = body.faces[4] # Upper side of cuboid o = ac.Point3D.create(x, y, ex_height) base_feature = comp.features.baseFeatures.add() should_true(base_feature.startEdit()) di = comp.decals.createInput(str(IMG_PATH), [face], o) trf = di.transform.copy() mr = ac.Matrix3D.create() mr.setToRotation(1, z_axis, o) trf.transformBy(mr) di.transform = trf di.targetBaseFeature = base_feature should_true(base_feature.finishEdit()) _ = comp.decals.add(di)

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Odd bug of Decal API