API Sample for AreaProperties

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
        sketches = rootComp.sketches
        sketch = sketches.add(rootComp.xZConstructionPlane)
        
        # Create sketch circle
        sketchCircles = sketch.sketchCurves.sketchCircles
        centerPoint = adsk.core.Point3D.create(0, 0, 0)
        sketchCircles.addByCenterRadius(centerPoint, 5.0)        
        centerPointTwo = adsk.core.Point3D.create(15, 0, 0)
        sketchCircles.addByCenterRadius(centerPointTwo, 5.0)
        
        # Get the profiles defined by the circle
        prof = sketch.profiles.item(0)
        profTwo = sketch.profiles.item(1)
        
        # Get area properties from a profile
        areaProps = prof.areaProperties(adsk.fusion.CalculationAccuracy.MediumCalculationAccuracy)
        
        # Get area
        area = areaProps.area
        
        # Get centroid
        centroid = areaProps.centroid
        
        # Get perimeter
        perimeter = areaProps.perimeter
        
        # Get angle of rotation of the principal axes
        rotationOfPrincipal = areaProps.rotationToPrincipal
        
        # Accuracy
        accuracy = areaProps.accuracy
        
        # Get area properties from two profiles
        inputs = adsk.core.ObjectCollection.create()
        inputs.add(prof)
        inputs.add(profTwo)
        areaProps = design.areaProperties(inputs)
        
        # Get principal axes
        (retVal, xAxis, yAxis) = areaProps.getPrincipalAxes()
        
        # Get centroid moments of inertia
        (retVal, centixx, centiyy, centizz, centixy, centiyz, centixz) = areaProps.getCentroidMomentsOfInertia()
        
        # Get principal moments of inertia
        (retVal, i1, i2, i3) = areaProps.getPrincipalMomentsOfInertia()
        
        # Get radius of gyration
        (retVal, kxx, kyy, kzz) = areaProps.getRadiusOfGyration()
        
        # Get moments of inertia
        (retVal, ixx, iyy, izz, ixy, iyz, ixz) = areaProps.getMomentsOfInertia()
 
    except:
        if ui:
            ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))

#include <Core/Application/Application.h>
#include <Core/Application/Document.h>
#include <Core/Application/Documents.h>
#include <Core/Application/ObjectCollection.h>
#include <Core/Geometry/Point3D.h>
#include <Core/Geometry/Vector3D.h>
#include <Core/UserInterface/UserInterface.h>
#include <Fusion/Components/Component.h>
#include <Fusion/Construction/ConstructionPlane.h>
#include <Fusion/Fusion/Design.h>
#include <Fusion/Sketch/Sketch.h>
#include <Fusion/Sketch/Sketches.h>
#include <Fusion/Sketch/SketchPoints.h>
#include <Fusion/Sketch/SketchPoint.h>
#include <Fusion/Sketch/SketchCurves.h>
#include <Fusion/Sketch/SketchCircles.h>
#include <Fusion/Sketch/SketchCircle.h>
#include <Fusion/Sketch/Profiles.h>
#include <Fusion/Sketch/Profile.h>
#include <Fusion/BRep/BRepBodies.h>
#include <Fusion/Fusion/AreaProperties.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;

    Ptr<Documents> docs = app->documents();
    if (!docs)
        return false;

    // Create a document.
    Ptr<Document> doc = docs->add(DocumentTypes::FusionDesignDocumentType);
    if (!doc)
        return false;

    Ptr<Design> design = app->activeProduct();
    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<Sketch> sketch = sketches->add(rootComp->xYConstructionPlane());
    if (!sketch)
        return false;

    // Create two sketch circles
    Ptr<SketchCurves> curves = sketch->sketchCurves();
    if (!curves)
        return false;

    Ptr<SketchCircles> circles = curves->sketchCircles();
    if (!circles)
        return false;
    Ptr<Point3D> centerPoint = Point3D::create(0, 0, 0);
    circles->addByCenterRadius(centerPoint, 5.0);
    Ptr<Point3D> centerPointTwo = Point3D::create(10.0, 0, 0);
    circles->addByCenterRadius(centerPointTwo, 5.0);

    // Get the profiles defined by the circle
    Ptr<Profiles> profs = sketch->profiles();
    if (!profs)
        return false;

    Ptr<Profile> prof = profs->item(0);
    Ptr<Profile> profTwo = profs->item(1);

    // Get area properties from a profile
    Ptr<AreaProperties> areaProps = prof->areaProperties(CalculationAccuracy::LowCalculationAccuracy);
    if (!areaProps)
        return false;

    // Get area
    double area = areaProps->area();

    // Get centroid
    Ptr<Point3D> centroid = areaProps->centroid();

    // Get perimeter
    double perimeter = areaProps->perimeter();

    // Get angle of rotation of the principal axes
    double rotationOfPrincipal = areaProps->rotationToPrincipal();

    // Accuracy
    CalculationAccuracy accuracy = areaProps->accuracy();

    // Get area properties from two profiles
    Ptr<ObjectCollection> inputs = ObjectCollection::create();
    if (!inputs)
        return false;
    inputs->add(prof);
    inputs->add(profTwo);
    areaProps = design->areaProperties(inputs);
    if (!areaProps)
        return false;

    // Get principal axes
    Ptr<Vector3D> xAxis;
    Ptr<Vector3D> yAxis;
    areaProps->getPrincipalAxes(xAxis, yAxis);

    // Get moments of inertia
    double ixx = 0, iyy = 0, izz = 0, ixy = 0, iyz = 0, ixz = 0;
    areaProps->getMomentsOfInertia(ixx, iyy, izz, ixy, iyz, ixz);

    // Get centroid moments of inertia
    double centixx = 0, centiyy = 0, centizz = 0, centixy = 0, centiyz = 0, centixz = 0;
    areaProps->getCentroidMomentsOfInertia(centixx, centiyy, centizz, centixy, centiyz, centixz);

    // Get principal moments of inertia
    double i1 = 0, i2 = 0, i3 = 0;
    areaProps->getPrincipalMomentsOfInertia(i1, i2, i3);

    // Get radius of gyration
    double kxx = 0, kyy = 0, kzz = 0;
    areaProps->getRadiusOfGyration(kxx, kyy, kzz);

    return true;
}