Scale selected item

[p_krola]

I would like to scale the selected item. However, executing the script below does not scale.

#include <Core/CoreAll.h>
#include <Fusion/FusionAll.h>
#include <CAM/CAMAll.h>
#include <iostream>
#include <format>
#include <string>

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


Ptr<Application> app;
Ptr<UserInterface> ui;

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

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

	// Have a body selected.
	Ptr<Selection> select = ui->selectEntity("Select a body", "Bodies");
	Ptr<BRepBody> body = select->entity();

	Ptr<Product> product = app->activeProduct();


	Ptr<Design> design = product;

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

	// Create an uniformed input for scale feature input

	
	Ptr<ObjectCollection> inputColl = ObjectCollection::create();

	inputColl->add(body);
	

	// Point for scale
	Ptr<Point3D> centerPoint = Point3D::create(0, 0, 0);

	Ptr<ValueInput> scaleFactor = ValueInput::createByReal(10);

	Ptr<Features> feats = rootComp->features();

	Ptr<ScaleFeatures> scales = feats->scaleFeatures();

	Ptr<ScaleFeatureInput> scaleUniformInput = scales->createInput(inputColl, centerPoint, scaleFactor);

	Ptr<ScaleFeature> scaleUniform = scales->add(scaleUniformInput);


	app->log("scale");



	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

[john.kirchner · Accepted solution]

You are most likely getting an error along the lines of "invalid ref point"

The point arg for the createInput should be one of these types:

What you are passing in is a Point3D type. If you follow the Scale Feature API Sample the centerPoint var created with Point3D::create(0,0,0) gets used to create a SketchCircle. The SketchCircle comes with a SketchPoint when it's created which is grabbed at basePt = sketchPts->item(0). basePt is ultimately what is used as the point arg in the createInput method.

One thing you could change the input point to is maybe a BRepVertex on the body - you can get that with body->verticies()->item(0) with the item # being up to you which point you want.

Otherwise if you just want the origin you can grab that with rootComp->originConstructionPoint()

So:

Ptr<ConstructionPoint> centerPoint = rootComp->originConstructionPoint();

Let me know if that helps!

[p_krola · Accepted solution]

Thank you very much for help. I was able to fix this problem. The second error was related to the component. scaleFeatures needs the Component to which belongs to the body .

Ptr<Component> comp = body->parentComponent();

Ptr<ScaleFeatures> scales = comp->features()->scaleFeatures();

Everything works fine now:)