晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : /home/akaindir/www/crm/libraries/tcpdf/fonts/ttf2ufm/ttf2ufm-src/other/bzscreen.h
/*
 * see COPYRIGHT
 */


/*
 * Screen for drawing the Bezier curves in text mode
 */

struct screen {
	unsigned physx;
	unsigned physy;
	unsigned cols;
	unsigned rows;
	unsigned xoff;
	unsigned yoff;
	unsigned minx;
	unsigned miny;
	char *dots;
	double xscale;
	double yscale;
} screen;

#define screenabsdot(x,y)	(screen.dots[(y)*screen.cols+(x)])
#define screendot(x,y)	screenabsdot((x)+screen.xoff, (y)+screen.yoff)

/* prototypes */
double fmin(double a, double b);
int abs(int x);
void initscreen(unsigned physx, unsigned physy, 
	unsigned cols, unsigned rows, unsigned xoff, unsigned yoff, 
	unsigned minx, unsigned miny, unsigned maxx, unsigned maxy);
void drawcurve(int mark, int ax,int ay, 
	int bx,int by, int cx,int cy, int dx,int dy);
void drawcurvedir(int mark, int ax,int ay, 
	int bx,int by, int cx,int cy, int dx,int dy);
void drawdot(int mark, int x, int y);
void setabsdot(int mark, int x, int y);
void setfdot(int mark, double x, double y);
void printscreen(FILE *f);

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