#include "cvContourToImage.h"


cvContourToImage::cvContourToImage(int _w, int _h){

	w = _w;
	h = _h;
	
	image = cvCreateImage( cvSize( _w,_h ), IPL_DEPTH_8U, 1 );
	storage = NULL;
}

//-------------------------------------------------------------------------------------
cvContourToImage::~cvContourToImage()
{	

}
//-------------------------------------------------------------------------------------
void cvContourToImage::setup(int _w, int _h){

	w = _w;
	h = _h;
	
	bAllocated = false;
	
	image = cvCreateImage( cvSize( _w,_h ), IPL_DEPTH_8U, 1 );
	storage = NULL;
}
//-------------------------------------------------------------------------------------

IplImage		* cvContourToImage::convertQuadToImage( ofPoint2f fQuad[4] )
{
    // get storage
	storage	= cvCreateMemStorage();
	
	CvPoint cPts[4];
	cPts[0].x = (int)fQuad[0].x; cPts[0].y = (int)fQuad[0].y;
	cPts[1].x = (int)fQuad[1].x; cPts[1].y = (int)fQuad[1].y;
	cPts[2].x = (int)fQuad[2].x; cPts[2].y = (int)fQuad[2].y;
	cPts[3].x = (int)fQuad[3].x; cPts[3].y = (int)fQuad[3].y;

	int nPts = 4;

	cvSetZero( image );
	cvFillConvexPoly( image, (CvPoint*)cPts, nPts, cvScalar(255,255,255,255));

	cvReleaseMemStorage(&storage);
	
	return image;//(unsigned char*) image->imageData;
}
//-------------------------------------------------------------------------------------
IplImage		*  cvContourToImage::convertContourToImage( ofPoint2f * pts, int totalPts)
{
    // max contour points should be defined in shared keying header
	int numRegions		= 1;
	int numInner		= 1;
	int currentRegion	= 0;
	int currentContour	= 0;
	
	// get storage
	storage	= cvCreateMemStorage();
	
	CvPoint * cPts = new CvPoint[totalPts+1];
	// copy points from array
	for(int i = 0; i < totalPts; i++)
	{
		cPts[i].x = pts[i].x;
		cPts[i].y = pts[i].y;
	}
	cPts[totalPts].x = pts[0].x;
	cPts[totalPts].y = pts[0].y;
	
    cvSetZero( image );
	
    CvPoint * cPtss = cPts; 
    //cvFillConvexPoly( image, (CvPoint*)cPtss, totalPts, cvScalar(255,255,255,255));
	cvFillPoly( image, &cPtss, &totalPts, 1,cvScalar(255,255,255,255) );
   
	delete cPts;
	cvReleaseMemStorage(&storage);
	
	return image;//(unsigned char*) image->imageData;
}