topic Re: AcGiSubEntityTraits::setLayer() and line weight, transparency and plottable in ObjectARX Forum

AcGiSubEntityTraits::setLayer() and line weight, transparency and plottable

maisoui — Wed, 25 Nov 2015 09:45:34 GMT

Hi,

In the worlddraw/viewportdraw of my custom entity, I call AcGiSubEntityTraits::setLayer() several times to change drawing properties of primitives. But, only color and lineType are applied from layer. What about line weight, transparency and plottable/frozen/inactive?

Do I need to manually "sync" these properties? Something like this:

wd->subEntityTraits().setLayer(idLayer);
AcDbLayerTableRecordPointer pLayer(idLayer, AcDb::kForRead);
if(pLayer.openStatus() == Acad::eOk)
{
	wd->subEntityTraits().setLineWeight(pLayer->lineWeight());
	wd->subEntityTraits().set...
}

Note: I use layers as properties for my custom entity because it's very user convenient (layer = container of multiple properties).

Best regards,

Re: AcGiSubEntityTraits::setLayer() and line weight, transparency and plottable

owenwengerd — Wed, 25 Nov 2015 16:09:54 GMT

Are all those other properties set to "bylayer"?

Re: AcGiSubEntityTraits::setLayer() and line weight, transparency and plottable

maisoui — Thu, 26 Nov 2015 07:50:14 GMT

Yes for sure.

If I change these properties on the layer (of my custom entity), it is applied to all primitives which are yet another layer (i.e. subEntityTraits()->setLayer()).

A couple of illustrations:

Code to reproduce:

Adesk::Boolean BcEntity::subWorldDraw(AcGiWorldDraw * wd)
{
	assertReadEnabled();

	if(wd->regenAbort() == Adesk::kTrue)
		return Adesk::kTrue;

	wd->geometry().circle(AcGePoint3d::kOrigin, 600, m_normal);

	AcDbLayerTablePointer pLayerTable(database() == NULL ? curDatabase() : database(), AcDb::kForRead);
	if(pLayerTable.openStatus() == Acad::eOk)
	{
		AcDbObjectId idLayer;

		if(pLayerTable->getAt(_T("1"), idLayer) == Acad::eOk)
		{
			wd->subEntityTraits().setLayer(idLayer);
			wd->geometry().circle(AcGePoint3d::kOrigin, 500, m_normal);
		}

		if(pLayerTable->getAt(_T("2"), idLayer) == Acad::eOk)
		{
			wd->subEntityTraits().setLayer(idLayer);
			wd->geometry().circle(AcGePoint3d::kOrigin, 400, m_normal);
		}

		if(pLayerTable->getAt(_T("3"), idLayer) == Acad::eOk)
		{
			wd->subEntityTraits().setLayer(idLayer);
			wd->geometry().circle(AcGePoint3d::kOrigin, 300, m_normal);
		}

		if(pLayerTable->getAt(_T("4"), idLayer) == Acad::eOk)
		{
			wd->subEntityTraits().setLayer(idLayer);
			wd->geometry().circle(AcGePoint3d::kOrigin, 200, m_normal);
		}

		if(pLayerTable->getAt(_T("5"), idLayer) == Acad::eOk)
		{
			wd->subEntityTraits().setLayer(idLayer);
			wd->geometry().circle(AcGePoint3d::kOrigin, 100, m_normal);
		}
	}

	return Adesk::kTrue;
}

Best regards

Re: AcGiSubEntityTraits::setLayer() and line weight, transparency and plottable

Anonymous — Thu, 26 Nov 2015 15:04:50 GMT

What Owen commented is about something like this:

Adesk::Boolean MyCustomObject::subWorldDraw (AcGiWorldDraw *mode) {
	assertReadEnabled () ;
	
	//if(mode->regenAbort() == Adesk::kTrue)
	//return Adesk::kTrue;

	AcGeVector3d normal = AcGeVector3d::kZAxis;
	AcCmTransparency transparency;
	transparency.setMethod(AcCmTransparency::kByLayer);

	mode->geometry().circle(AcGePoint3d::kOrigin, 600, normal);

	AcDbLayerTablePointer pLayerTable(acdbHostApplicationServices()->workingDatabase(), AcDb::kForRead);
	if(pLayerTable.openStatus() == Acad::eOk)
	{
		AcDbObjectId idLayer;

		if(pLayerTable->getAt(_T("1"), idLayer) == Acad::eOk)
		{
			mode->subEntityTraits().setLayer(idLayer);
			mode->subEntityTraits().setLineWeight(AcDb::kLnWtByLayer);
			mode->subEntityTraits().setTransparency(transparency);
			mode->geometry().circle(AcGePoint3d::kOrigin, 500, normal);
		}

		if(pLayerTable->getAt(_T("2"), idLayer) == Acad::eOk)
		{
			mode->subEntityTraits().setLayer(idLayer);
			mode->subEntityTraits().setLineWeight(AcDb::kLnWtByLayer);
			mode->subEntityTraits().setTransparency(transparency);
			mode->geometry().circle(AcGePoint3d::kOrigin, 400, normal);
		}

		if(pLayerTable->getAt(_T("3"), idLayer) == Acad::eOk)
		{
			mode->subEntityTraits().setLayer(idLayer);
			mode->subEntityTraits().setLineWeight(AcDb::kLnWtByLayer);
			mode->subEntityTraits().setTransparency(transparency);
			mode->geometry().circle(AcGePoint3d::kOrigin, 300, normal);
		}

		if(pLayerTable->getAt(_T("4"), idLayer) == Acad::eOk)
		{
			mode->subEntityTraits().setLayer(idLayer);
			mode->subEntityTraits().setLineWeight(AcDb::kLnWtByLayer);
			mode->subEntityTraits().setTransparency(transparency);
			mode->geometry().circle(AcGePoint3d::kOrigin, 200, normal);
		}

		if(pLayerTable->getAt(_T("5"), idLayer) == Acad::eOk)
		{
			mode->subEntityTraits().setLayer(idLayer);
			mode->subEntityTraits().setLineWeight(AcDb::kLnWtByLayer);
			mode->subEntityTraits().setTransparency(transparency);
			mode->geometry().circle(AcGePoint3d::kOrigin, 100, normal);
		}
	}

	return (AcDbEntity::subWorldDraw (mode)) ;
}

hth.-

Re: AcGiSubEntityTraits::setLayer() and line weight, transparency and plottable

maisoui — Thu, 26 Nov 2015 15:54:22 GMT

Oh perfect, it works. I had not realized I had to do it after each setLayer().

And what about the plottable property? Do you have an idea?

Thank you for your help.

Re: AcGiSubEntityTraits::setLayer() and line weight, transparency and plottable

Anonymous — Thu, 26 Nov 2015 16:45:46 GMT

for the plottable part, i would do something like this, on each of the desired layers:

		if(pLayerTable->getAt(_T("1"), idLayer) == Acad::eOk)
		{
			AcGiContext* context = mode->context();
			if (context->isPlotGeneration() == Adesk::kTrue)
			{
				AcDbLayerTableRecordPointer pLayer(idLayer, AcDb::kForRead);
				if (pLayer.openStatus() == Acad::eOk && pLayer->isPlottable()) 
				{
					mode->subEntityTraits().setLayer(idLayer);
					mode->subEntityTraits().setLineWeight(AcDb::kLnWtByLayer);
					mode->subEntityTraits().setTransparency(transparency);
					mode->geometry().circle(AcGePoint3d::kOrigin, 500, normal);
				}
			}
			else
			{
				mode->subEntityTraits().setLayer(idLayer);
				mode->subEntityTraits().setLineWeight(AcDb::kLnWtByLayer);
				mode->subEntityTraits().setTransparency(transparency);
				mode->geometry().circle(AcGePoint3d::kOrigin, 500, normal);
			}
		}

hth.-

Re: AcGiSubEntityTraits::setLayer() and line weight, transparency and plottable

maisoui — Fri, 27 Nov 2015 08:05:53 GMT

I thought of a solution like this. But It's a "manual approach". I think the API should manage it for me.

Thank you for your help.

Regards,

Re: AcGiSubEntityTraits::setLayer() and line weight, transparency and plottable

Anonymous — Fri, 27 Nov 2015 15:41:14 GMT

Yes, i used this in the past, and i see what you mean, as to why not currently the part of mode->subEntityTraits().setLayer(idLayer); does not takes care of updating the entity as (just for testing purposes), one can get by using AcGiDrawable's and get the effect without doing any of the subEntityTraits().setXXXX calls.

in example:

AcDbCircle* circle = new AcDbCircle(AcGePoint3d::kOrigin, normal, 500);	
circle->setLayer(idLayer);
mode->geometry().draw(circle);

even without testing for isPlotting()...