Patch Feature API Sample

import adsk.core, adsk.fusion, traceback

def run(context):
    ui = None
    try:
        app = adsk.core.Application.get()
        ui = app.userInterface
        
        # Create a document.
        doc = app.documents.add(adsk.core.DocumentTypes.FusionDesignDocumentType)
 
        product = app.activeProduct
        design = adsk.fusion.Design.cast(product)

        # Get the root component of the active design.
        rootComp = design.rootComponent
        
        # Create sketch
        sketchesObj = rootComp.sketches
        sketch = sketchesObj.add(rootComp.xZConstructionPlane)
        sketchCircles = sketch.sketchCurves.sketchCircles
        centerPoint = adsk.core.Point3D.create(0, 0, 0)
        sketchCircles.addByCenterRadius(centerPoint, 3.0)
        sketchCircles.addByCenterRadius(centerPoint, 10.0)

        # Get the profiles defined by the circles.
        profile1 = sketch.profiles.item(0)
        profile2 = sketch.profiles.item(1)
        
        # Get the inner and outer profile
        areaPropertiesOfProfile1 = profile1.areaProperties()
        areaPropertiesOfProfile2 = profile2.areaProperties()
        areaOfProfile1 = areaPropertiesOfProfile1.area
        areaOfProfile2 = areaPropertiesOfProfile2.area

        outerProfile = profile1
        if areaOfProfile1 < areaOfProfile2:
            outerProfile = profile2

        # Create a extrusion based on the outer profile
        extrudes = rootComp.features.extrudeFeatures
        extrudeDistance = adsk.core.ValueInput.createByString("1 cm")
        extrudeFeature = extrudes.addSimple(outerProfile, extrudeDistance, adsk.fusion.FeatureOperations.NewBodyFeatureOperation)

        # Get BrepEdge from inner loop on the end face of the extrusion
        extrudeEndFace = extrudeFeature.endFaces.item(0)
        brepLoops = extrudeEndFace.loops
        innerLoop = brepLoops.item(0)
        if innerLoop.isOuter:
            innerLoop = brepLoops.item(1)
        brepEdges = innerLoop.edges
        brepEdge = brepEdges.item(0)

        # Create the patch feature
        patches = rootComp.features.patchFeatures
        patchInput = patches.createInput(brepEdge, adsk.fusion.FeatureOperations.NewBodyFeatureOperation)
        patches.add(patchInput)

    except:
        if ui:
            ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))

#include <Core/Application/Application.h>
#include <Core/Application/Documents.h>
#include <Core/Application/Document.h>
#include <Core/Application/Product.h>
#include <Core/Application/ValueInput.h>
#include <Core/Geometry/Point3D.h>
#include <Core/UserInterface/UserInterface.h>
#include <Fusion/BRep/BRepBody.h>
#include <Fusion/BRep/BRepBodies.h>
#include <Fusion/BRep/BRepFace.h>
#include <Fusion/BRep/BRepFaces.h>
#include <Fusion/BRep/BRepLoops.h>
#include <Fusion/BRep/BRepLoop.h>
#include <Fusion/BRep/BRepEdges.h>
#include <Fusion/BRep/BRepEdge.h>
#include <Fusion/Components/Component.h>
#include <Fusion/Construction/ConstructionPlane.h>
#include <Fusion/Features/Features.h>
#include <Fusion/Features/ExtrudeFeatures.h>
#include <Fusion/Features/ExtrudeFeature.h>
#include <Fusion/Features/PatchFeatures.h>
#include <Fusion/Features/PatchFeatureInput.h>
#include <Fusion/Features/PatchFeature.h>
#include <Fusion/Fusion/Design.h>
#include <Fusion/Fusion/AreaProperties.h>
#include <Fusion/Sketch/Profile.h>
#include <Fusion/Sketch/Profiles.h>
#include <Fusion/Sketch/Sketch.h>
#include <Fusion/Sketch/Sketches.h>
#include <Fusion/Sketch/SketchCircle.h>
#include <Fusion/Sketch/SketchCircles.h>
#include <Fusion/Sketch/SketchCurves.h>

using namespace adsk::core;
using namespace adsk::fusion;

Ptr<UserInterface> ui;

extern "C" XI_EXPORT bool run(const char* context)
{
    Ptr<Application> app = Application::get();
    if (!app)
        return false;

    ui = app->userInterface();
    if (!ui)
        return false;

    // Create a document
    Ptr<Documents> docs = app->documents();
    if (!docs)
        return false;
    Ptr<Document> doc = docs->add(adsk::core::DocumentTypes::FusionDesignDocumentType);
    if (!doc)
        return false;

    Ptr<Product> activeProd = app->activeProduct();
    if (!activeProd)
        return false;

    Ptr<Design> design = activeProd;
    if (!design)
        return false;

    // Get the root component of the active design
    Ptr<Component> rootComp = design->rootComponent();
    if (!rootComp)
        return false;

    // Create sketch.
    Ptr<Sketches> sketches = rootComp->sketches();
    if (!sketches)
        return false;
    Ptr<ConstructionPlane> xzPlane = rootComp->xZConstructionPlane();
    if (!xzPlane)
        return false;
    Ptr<Sketch> sketch = sketches->add(xzPlane);
    if (!sketch)
        return false;
    Ptr<SketchCurves> sketchCurves = sketch->sketchCurves();
    if (!sketchCurves)
        return false;
    Ptr<SketchCircles> sketchCircles = sketchCurves->sketchCircles();
    if (!sketchCircles)
        return false;
    Ptr<Point3D> centerPoint = Point3D::create(0, 0, 0);
    if (!centerPoint)
        return false;
    Ptr<SketchCircle> circle1 = sketchCircles->addByCenterRadius(centerPoint, 3.0);
    if (!circle1)
        return false;
    Ptr<SketchCircle> circle2 = sketchCircles->addByCenterRadius(centerPoint, 10.0);
    if (!circle2)
        return false;

    // Get the profiles defined by the circles
    Ptr<Profiles> profs = sketch->profiles();
    if (!profs)
        return false;
    Ptr<Profile> profile1 = profs->item(0);
    if (!profile1)
        return false;
    Ptr<Profile> profile2 = profs->item(1);
    if (!profile2)
        return false;

    // Get the inner and outer profile
    Ptr<AreaProperties> areaPropertiesOfProfile1 = profile1->areaProperties();
    if (!areaPropertiesOfProfile1)
        return false;
    Ptr<AreaProperties> areaPropertiesOfProfile2 = profile2->areaProperties();
    if (!areaPropertiesOfProfile2)
        return false;
    double areaOfProfile1 = areaPropertiesOfProfile1->area();
    double areaOfProfile2 = areaPropertiesOfProfile2->area();
    Ptr<Profile> outerProfile = profile1;
    if (areaOfProfile1 < areaOfProfile2)
    {
        outerProfile = profile2;
    }

    // Create an extrusion based on the outer profile
    Ptr<Features> feats = rootComp->features();
    if (!feats)
        return false;
    Ptr<ExtrudeFeatures> extrudes = feats->extrudeFeatures();
    if (!extrudes)
        return false;
    Ptr<ValueInput> extrudeDistance = ValueInput::createByString("1 cm");
    if (!extrudeDistance)
        return false;
    Ptr<ExtrudeFeature> extrudeFeature =
        extrudes->addSimple(outerProfile, extrudeDistance, FeatureOperations::NewBodyFeatureOperation);
    if (!extrudeFeature)
        return false;

    // Get BrepEdge from inner loop on the end face of the extrusion
    Ptr<BRepFaces> endFacesObj = extrudeFeature->endFaces();
    if (!endFacesObj)
        return false;
    Ptr<BRepFace> endFace = endFacesObj->item(0);
    if (!endFace)
        return false;
    Ptr<BRepLoops> brepLoops = endFace->loops();
    if (!brepLoops)
        return false;
    Ptr<BRepLoop> innerLoop = brepLoops->item(0);
    if (!innerLoop)
        return false;
    if (innerLoop->isOuter())
    {
        innerLoop = brepLoops->item(1);
    }
    if (!innerLoop)
        return false;
    Ptr<BRepEdges> brepEdges = innerLoop->edges();
    if (!brepEdges)
        return false;
    Ptr<BRepEdge> brepEdge = brepEdges->item(0);
    if (!brepEdge)
        return false;

    // Create the patch feature
    Ptr<PatchFeatures> patches = feats->patchFeatures();
    if (!patches)
        return false;
    Ptr<PatchFeatureInput> patchInput =
        patches->createInput(brepEdge, adsk::fusion::FeatureOperations::NewBodyFeatureOperation);
    if (!patchInput)
        return false;
    Ptr<PatchFeature> patchFeature = patches->add(patchInput);
    if (!patchFeature)
        return false;


    return true;
}

#ifdef XI_WIN

#include <windows.h>

BOOL APIENTRY DllMain(HMODULE hmodule, DWORD reason, LPVOID reserved)
{
    switch (reason)
    {
    case DLL_PROCESS_ATTACH:
    case DLL_THREAD_ATTACH:
    case DLL_THREAD_DETACH:
    case DLL_PROCESS_DETACH:
        break;
    }
    return TRUE;
}

#endif // XI_WIN