C++ (Cpp) Path::Scale Examples

Example #1

File: filtirr.cpp Project: Amadiro/xara-cairo

void ImagemapRenderRegion::AddPathToImagemap(Path* ppthToAdd, WebAddressAttribute* pwaaCurrent)
{
	//First get the origin of the export area and the DPI
	DocCoord dcOrigin=ImagemapFilterOptions::GetOriginOfExportArea(m_Options.m_stExportArea);
	double dDPI=m_Options.m_dDPI;

	//Now, how many subpaths are there in this path?
	INT32 lNumSubpaths=ppthToAdd->GetNumSubpaths();

	//For each subpath in the path
	for (INT32 l=0; l<lNumSubpaths; l++)
	{
		//Create a new path
		Path pthSubpath;

		pthSubpath.Initialise(ppthToAdd->GetNumCoords());

		//And copy the next subpath into it
		ppthToAdd->MakePathFromSubPath(l, &pthSubpath);

		//Now, if that subpath is closed
		if (pthSubpath.IsSubPathClosed(0))
		{
			//Then we want to add it to the imagemap

			//So scale it to dDPI and by dcOrigin
			pthSubpath.Scale(dcOrigin, dDPI);
	
			//Now we need to flatten it.
			//This means creating a new path, because otherwise Path::Flatten
			//goes wrong

			Path pthFlattened;

			pthFlattened.Initialise(pthSubpath.GetNumCoords());

			//So, if we should flatten the path
			if (m_Options.m_ffApprox!=FF_NOTATALL)
				//Then do it
				pthSubpath.Flatten(m_Options.m_ffApprox, &pthFlattened);
			else
				//Otherwise, simply copy the path across
				pthFlattened.CopyPathDataFrom(&pthSubpath);

			//Then add the flattened path to the imagemap
			m_Imagemap.AddPolygon(&pthFlattened, pwaaCurrent->m_url.GetWebAddress(), pwaaCurrent->m_pcFrame);
		}
	}
			
	
}

Example #2

File: filtirr.cpp Project: Amadiro/xara-cairo

void ImagemapRenderRegion::AddCircleToImagemap(Path* ppthToScale, WebAddressAttribute* pwaaCurrent)
{
	//First get the origin of the export area and the DPI
	DocCoord dcOrigin=ImagemapFilterOptions::GetOriginOfExportArea(m_Options.m_stExportArea);
	double dDPI=m_Options.m_dDPI;

	//Now make a copy of the path
	Path pthToAdd;
	
	pthToAdd.Initialise(ppthToScale->GetNumCoords());

	pthToAdd.CopyPathDataFrom(ppthToScale);

	//Scale it
	pthToAdd.Scale(dcOrigin, dDPI);

	//And add it to the imagemap
	m_Imagemap.AddCircle(&pthToAdd, pwaaCurrent->m_url.GetWebAddress(), pwaaCurrent->m_pcFrame);
	
}