#include <stdint.h>//#include <stdlib.h>#include "bresenham.h"// Bresenham Line Algorithm// used by myLinevoid setPixel(uint32_t* restrict surface, uint32_t x,  uint32_t y, uint32_t stride) {	// PLOT x,y point on surface    surface[ ( y * stride ) + x ] = 0x00;}// Bresenham Line Algorithmvoid drawLine(uint32_t* restrict surface, uint32_t x1, uint32_t y1, uint32_t x2, uint32_t y2, uint32_t stride) {	/*	int32_t x = 0;	int32_t y = 0;	int32_t error = 0;	int32_t delta = 0;	int32_t step = 0;	int32_t dx = 0;	int32_t dy = 0;	int32_t incx = 0;	int32_t incy = 0;		x = x1;	y = y1;		dy = y2 - y1;	dx = x2 - x1;		if(dx > 0)		incx = 1;	else		incx = -1;			if(dy > 0)		incy = 1;	else		incy = -1;			if(abs(dy) < abs(dx)){		error = -abs(dx);		delta = 2*abs(dy);		step = 2*error;		while( x != 2 ){			setPixel(surface, x, y, stride);			x+= incx;			error = error + delta;			if(error > 0) {				y += incy;				error += step;			}		}	}	else {		error = -abs(dy);		delta = 2*abs(dx);		step = 2*error;		while( y != y2){			setPixel(surface, x, y, stride);			y += incy;			error = error + delta;			if (error > 0){				x += incx;				error +=step;			}		}	}	setPixel(surface, x2, y2, stride);*/	int		x, y;	int		dx, dy;	int		incx, incy;	int		balance;	if (x2 >= x1)	{		dx = x2 - x1;		incx = 1;	}	else	{		dx = x1 - x2;		incx = -1;	}	if (y2 >= y1)	{		dy = y2 - y1;		incy = 1;	}	else	{		dy = y1 - y2;		incy = -1;	}	x = x1;	y = y1;	if (dx >= dy)	{		dy <<= 1;		balance = dy - dx;		dx <<= 1;		while (x != x2)		{			setPixel(surface,x, y, stride);			if (balance >= 0)			{				y += incy;				balance -= dx;			}			balance += dy;			x += incx;		} setPixel(surface,x, y, stride);	}	else	{		dx <<= 1;		balance = dx - dy;		dy <<= 1;		while (y != y2)		{			setPixel(surface,x, y, stride);			if (balance >= 0)			{				x += incx;				balance -= dy;			}			balance += dx;			y += incy;		} setPixel(surface,x, y, stride);	}}