API Sample that demonstrates creating sketch lines in various ways.

import adsk.core, adsk.fusion, traceback

def run(context):
    ui = None
    try: 
        app = adsk.core.Application.get()
        ui = app.userInterface

        doc = app.documents.add(adsk.core.DocumentTypes.FusionDesignDocumentType)
        design = app.activeProduct

        # Get the root component of the active design.
        rootComp = design.rootComponent

        # Create a new sketch on the xy plane.
        sketches = rootComp.sketches;
        xyPlane = rootComp.xYConstructionPlane
        sketch = sketches.add(xyPlane)

        # Draw two connected lines.
        lines = sketch.sketchCurves.sketchLines;
        line1 = lines.addByTwoPoints(adsk.core.Point3D.create(0, 0, 0), adsk.core.Point3D.create(3, 1, 0))
        line2 = lines.addByTwoPoints(line1.endSketchPoint, adsk.core.Point3D.create(1, 4, 0))

        # Draw a rectangle by two points.
        recLines = lines.addTwoPointRectangle(adsk.core.Point3D.create(4, 0, 0), adsk.core.Point3D.create(7, 2, 0))

        # Use the returned lines to add some constraints.
        sketch.geometricConstraints.addHorizontal(recLines.item(0))
        sketch.geometricConstraints.addHorizontal(recLines.item(2))
        sketch.geometricConstraints.addVertical(recLines.item(1))
        sketch.geometricConstraints.addVertical(recLines.item(3))
        sketch.sketchDimensions.addDistanceDimension(recLines.item(0).startSketchPoint, recLines.item(0).endSketchPoint,
                                                     adsk.fusion.DimensionOrientations.HorizontalDimensionOrientation,
                                                     adsk.core.Point3D.create(5.5, -1, 0));

        # Draw a rectangle by three points.
        recLines = lines.addThreePointRectangle(adsk.core.Point3D.create(8, 0, 0), adsk.core.Point3D.create(11, 1, 0), adsk.core.Point3D.create(9, 3, 0))

        # Draw a rectangle by a center point.
        recLines = lines.addCenterPointRectangle(adsk.core.Point3D.create(14, 3, 0), adsk.core.Point3D.create(16, 4, 0))
    except:
        if ui:
            ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))

#include <Core/CoreAll.h>
#include <Fusion/FusionAll.h>


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

Ptr<Application> app;

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

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

    Ptr<Document> doc = documents->add(DocumentTypes::FusionDesignDocumentType);
    if (!doc)
        return false;

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

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

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

    // Create a new sketch on the xy plane.
    Ptr<Sketches> sketches = rootComp->sketches();
    if (!sketches)
        return false;
    Ptr<ConstructionPlane> xyPlane = rootComp->xYConstructionPlane();
    if (!xyPlane)
        return false;
    Ptr<Sketch> sketch = sketches->add(xyPlane);
    if (!sketch)
        return false;

    // Draw two connected lines.
    Ptr<SketchCurves> sketchCurves = sketch->sketchCurves();
    if (!sketchCurves)
        return false;
    Ptr<SketchLines> sketchLines = sketchCurves->sketchLines();
    if (!sketchLines)
        return false;
    Ptr<SketchLine> line1 = sketchLines->addByTwoPoints(Point3D::create(0, 0, 0), Point3D::create(3, 1, 0));
    if (!line1)
        return false;
    Ptr<SketchLine> line2 = sketchLines->addByTwoPoints(line1->endSketchPoint(), Point3D::create(1, 4, 0));
    if (!line2)
        return false;

    // Draw a rectangle by two points.
    Ptr<SketchLineList> recLines =
        sketchLines->addTwoPointRectangle(Point3D::create(4, 0, 0), Point3D::create(7, 2, 0));
    if (!recLines)
        return false;

    // Use the returned lines to add some constraints.
    Ptr<GeometricConstraints> constraints = sketch->geometricConstraints();
    if (!constraints)
        return false;

    Ptr<HorizontalConstraint> HConstraint = constraints->addHorizontal(recLines->item(0));
    if (!HConstraint)
        return false;
    HConstraint = constraints->addHorizontal(recLines->item(2));
    if (!HConstraint)
        return false;

    Ptr<VerticalConstraint> VConstraint = constraints->addVertical(recLines->item(1));
    if (!VConstraint)
        return false;
    VConstraint = constraints->addVertical(recLines->item(3));
    if (!VConstraint)
        return false;

    Ptr<SketchDimensions> sketchDimensions = sketch->sketchDimensions();
    if (!sketchDimensions)
        return false;
    Ptr<SketchDimension> sketchDimension = sketchDimensions->addDistanceDimension(
        recLines->item(0)->startSketchPoint(),
        recLines->item(0)->endSketchPoint(),
        HorizontalDimensionOrientation,
        Point3D::create(5.5, -1, 0));
    if (!sketchDimension)
        return false;

    // Draw a rectangle by three points.
    recLines = sketchLines->addThreePointRectangle(
        Point3D::create(8, 0, 0), Point3D::create(11, 1, 0), Point3D::create(9, 3, 0));
    if (!recLines)
        return false;

    // Draw a rectangle by a center point.
    recLines = sketchLines->addCenterPointRectangle(Point3D::create(14, 3, 0), Point3D::create(16, 4, 0));
    if (!recLines)
        return false;


    return true;
}

/**
 * API Sample that demonstrates creating sketch lines in various ways.
 * Demonstrates several ways to create sketch lines, including as the result of creating a rectangle.
 */

import { adsk } from '@adsk/fusion';

// Params
// {
//     "useCurrentDocument": false,
//     "saveAsNewDocument": false,
//     "message": "",
//     "hubId": "wip1fqaautodesk4298",
//     "fileURN": "urn:adsk.wipqa:dm.lineage:WlSCDh7RQN6zD2btrrO4SA"
// }

function run() {

// Read the parameters passed with the script
  const scriptParameters = JSON.parse(adsk.parameters);
  if (!scriptParameters) throw Error("Invalid parameters provided.");

  // Get the Fusion API's application object
  const app = adsk.core.Application.get();
  if (!app) throw Error("No adsk.core.Application.");

  // Create a new empty document
  const doc = getDocument(
    app,
    scriptParameters.useCurrentDocument,
    scriptParameters.hubId,
    scriptParameters.fileURN,
  );
  if (!doc) throw Error("Invalid document.");

 // Ensure we are in the Design environment.
  const design = app.activeProduct as adsk.fusion.Design;

  //Get the root component of the active design.
  const rootComp = design.rootComponent

  // Create a new sketch on the xy plane.
  const sketches = rootComp.sketches
  const xyPlane = rootComp.xYConstructionPlane
  const sketch = sketches.add(xyPlane)

  //Draw two connected lines.
  const lines = sketch.sketchCurves.sketchLines;
  const line1 = lines.addByTwoPoints(adsk.core.Point3D.create(0, 0, 0), adsk.core.Point3D.create(3, 1, 0))
  const line2 = lines.addByTwoPoints(line1.endSketchPoint, adsk.core.Point3D.create(1, 4, 0))

  // Draw a rectangle by two points.
  const recLinesTwoPoints = lines.addTwoPointRectangle(adsk.core.Point3D.create(4, 0, 0), adsk.core.Point3D.create(7, 2, 0))
  // Use the returned lines to add some constraints.
  sketch.geometricConstraints.addHorizontal(recLinesTwoPoints.item(0))
  sketch.geometricConstraints.addHorizontal(recLinesTwoPoints.item(2))
  sketch.geometricConstraints.addVertical(recLinesTwoPoints.item(1))
  sketch.geometricConstraints.addVertical(recLinesTwoPoints.item(3))
  sketch.sketchDimensions.addDistanceDimension(recLinesTwoPoints.item(0).startSketchPoint, recLinesTwoPoints.item(0).endSketchPoint,
                                               adsk.fusion.DimensionOrientations.HorizontalDimensionOrientation,
                                               adsk.core.Point3D.create(5.5, -1, 0))
  // Draw a rectangle by three points.
  const recLinesThreePoints = lines.addThreePointRectangle(adsk.core.Point3D.create(8, 0, 0), adsk.core.Point3D.create(11, 1, 0), adsk.core.Point3D.create(9, 3, 0))

  // Draw a rectangle by a center point.
  const recLinesCenterPoint = lines.addCenterPointRectangle(adsk.core.Point3D.create(14, 3, 0), adsk.core.Point3D.create(16, 4, 0))

  saveDocument(
      doc,
      scriptParameters.saveAsNewDocument,
      scriptParameters.message,
      doc.dataFile.parentFolder,
    );

    while (app.hasActiveJobs) {
    wait(2000);
  }
}
function wait(ms: number) {
  const start = new Date().getTime();
  while (new Date().getTime() - start < ms) adsk.doEvents();
}

function getDocument(
  app: adsk.core.Application,
  useCurrentDocument: boolean,
  hubId: string,
  fileURN: string,
): adsk.core.Document {
  if (useCurrentDocument === true) {
    adsk.log(`Using currently open document: ${app.activeDocument.name}.`);
    return app.activeDocument;
  }

  if (hubId) {
    // Possible hubId formats: base64 encoded string, or business:<id>,
    // or personal:<id> (deprecated)
    const hub =
      app.data.dataHubs.itemById(hubId) ||
      app.data.dataHubs.itemById(`a.${adsk.btoa(`business:${hubId}`, true)}`) ||
      app.data.dataHubs.itemById(`a.${adsk.btoa(`personal:${hubId}`, true)}`);
    if (!hub) throw Error(`Hub with id ${hubId} not found.`);
    adsk.log(`Setting hub: ${hub.name}.`);
    app.data.activeHub = hub;
  }

  const file = app.data.findFileById(fileURN);
  if (!file) throw Error(`File not found ${fileURN}.`);
  adsk.log(`Opening ${file.name}`);
  const document = app.documents.open(file, true);
  if (!document) throw Error(`Cannot open file ${file.name}.`);
  return document;
}

function saveDocument(
  doc: adsk.core.Document,
  saveAsNewDocument: boolean,
  message: string,
  destinationFolder: adsk.core.DataFolder,
): boolean {
  if (saveAsNewDocument) {
    adsk.log("Saving as new document.");
    try {
      destinationFolder.parentProject;
    } catch (e) {
      adsk.log(
        "Destination folder is not in a project, setting folder to Fusion Automation Service project.",
      );
      destinationFolder = defaultFolder(
        doc.parent,
        "Fusion Automation Service",
      );
    }
    if (
      doc.saveAs(doc.name + " Additive Ready", destinationFolder, message, "")
    ) {
      adsk.log("Document saved successfully.");
      return true;
    } else {
      adsk.log("Document failed to save.");
      return false;
    }
  }

  if (!doc.isModified) {
    adsk.log("Document not modified, not saving.");
    return true;
  }

  adsk.log(`Saving with message: "${message}".`);
  if (doc.save(message)) {
    adsk.log("Document saved successfully.");
    return true;
  } else {
    adsk.log("Document failed to save.");
    return false;
  }
}

function defaultFolder(app: adsk.core.Application, defaultProjectName: string) {
  const projects = app.data.activeHub.dataProjects;
  if (!projects) throw Error("Unable to get active hub's projects.");
  for (let i = 0; i < projects.count; ++i) {
    const project = projects.item(i)!;
    if (project.name === defaultProjectName) {
      return project.rootFolder;
    }
  }
  adsk.log(`Creating new project: ${defaultProjectName}`);
  const project = projects.add(defaultProjectName);
  if (!project) throw Error("Unable to create new project.");
  return project.rootFolder;
}

run();