#include <meshwrp/main.hpp>
#include <meshwrp/convex.hpp>
#include <meshwrp/image.hpp>
#include <common/math.hpp>
#include <common/guiwnd.hpp>

Convex::Convex()
: mWidth(0), mHeight(0), mxHalf(0), myHalf(0)
{
}

Convex::~Convex()
{
}

Image Convex::performConvex(Image &srcImage,GUIWindow &window)
{
	RGB888 rgb888;
  Image dstImage;
	POINT tempPoint;
	double scaleFactor;
	double tempFactor;

  mWidth=srcImage.width();
	mHeight=srcImage.height();
	mxHalf=mWidth/2;
	myHalf=mHeight/2;
  dstImage.newImage(mWidth,mHeight,window);
	for(int y=0;y<mHeight;y++)
	{
	  for(int x=0;x<mWidth;x++)
		{
			setPoint(x,y,tempPoint);
			cartesianPoint(tempPoint);
			tempFactor=::sqrt(((LONG)tempPoint.x*(LONG)tempPoint.x)+((LONG)tempPoint.y*(LONG)tempPoint.y));
			tempFactor*=Math::piOver180();
			if(tempFactor)scaleFactor=(::tan(::atan(tempFactor)/2.00))/tempFactor;
			else scaleFactor=0.00;
			scaleFactor*=2;
			tempFactor=scaleFactor*(double)tempPoint.x;
			tempFactor+=(tempFactor<0?-.5:.5);
			tempPoint.x=tempFactor;
			tempFactor=scaleFactor*(double)tempPoint.y;
			tempFactor+=(tempFactor<0?-.5:.5);
			tempPoint.y=tempFactor;
			imagePoint(tempPoint);
			if(tempPoint.x>=mWidth)continue;
			if(tempPoint.y>=mHeight)continue;
      srcImage.getAt(y,x,rgb888);
			dstImage.setAt(tempPoint.y,tempPoint.x,rgb888);
		}
	}
	return dstImage;
}