#include "ScanLine.h"



struct RecScan : Rasterizer::Target {

	ScanLine sl;

	byte    *t;

	int      x;

	

	virtual void Render(int val);

	virtual void Render(int val, int len);

	virtual void Start(int x, int len);

	void Finish();

};



void RecScan::Start(int xmin, int xmax)

{

	sl.data.Alloc((xmax - xmin + 1) * 2);

	t = ~sl.data;

	sl.xmin = 0;

}



void RecScan::Render(int val)

{

	if(val == 0) {

		*t++ = 0;

		*t++ = 0;

	}

	else

	if(val == 256) {

		*t++ = 0;

		*t++ = 0;

	}

	else

		*t++ = val;

	x++;

}



void RecScan::Render(int val, int len)

{

	x += len;

	if(val == 256) {

		while(len > 0) {

			int n = min(len, 128);

			*t++ = 0;

			*t++ = 128 + n - 1;

			len -= n;

		}

		return;

	}

	if(val == 0) {

		while(len > 0) {

			int n = min(len, 128);

			*t++ = 0;

			*t++ = n - 1;

			len -= n;

		}

		return;

	}

	while(len--)

		*t++ = val;

}

/*

void RecScan::Finish(int cx)

{

	cx = cx - x;

	while(cx > 0) {

		int n = min(cx, 128);

		*t++ = 0;

		*t++ = n - 1;

		cx -= n;

	}

	sl.datalen = t - ~sl.data;

}



void RecScan::Shrink()

{

	if(sl.datalen + 30 < 

}

*/