svgadem2.c

MSC或BC开发的SVGA图形开发库(允许使用300x200,640x480,80x600,1024x768等多种模式) 此开发库特别适合嵌入式系统

		d3scale(10,i,i,i,pointarray,playarray);
		d3project(10,&proj,playarray,plotarray);
		showhouse(plotarray,oplotarray);
		sdelay(2);
	}
	ret = getkey();
	if ((ret=='s') || (ret=='q')) {
		fillscreen(0);
		setview(0,0,maxx,maxy);
		return(ret);
	}

	/*
	 * show d3rotate
	 */
	setview(0,16,maxx,31);
	fillview(0);
	sprintf(buf,"d3rotate(points,xorigin,yorigin,zorigin,zangle,yangle,xangle,inarray,outarray);");
	drwstring(1,7,0,buf,10,16);
	setview(0,32,maxx,maxy);
	for(i=0;i<=360;i+=3) {
		d3rotate(10,0,0,0,0,i,i,pointarray,playarray);
		d3project(10,&proj,playarray,plotarray);
		showhouse(plotarray,oplotarray);
		sdelay(2);
	}
	
	ret = getkey();

	fillscreen(0);
	setview(0,0,maxx,maxy);

	return(ret);

}

/***********
 * DOMOUSE *
 ***********/

char domouse(void)
{
	int i, mouse;
	int colr, x1, x2, y1, y2;
	int lb, cb, rb, x, y, mbuts;
	int spcing;
	char ret;
	char title[TITLEN];
	char buf[TITLEN];

	/*
	 * Set up the title
	 */
	sprintf(title,"DEMO 9: Mouse functions");
	fillscreen(0);
	palset(pal,0,255);
	setview(0,0,maxx,maxy);

	/*
	 * Check to see if we have a mouse so we can do the mouse demo
	 */
	mouse = whichmouse();
	if (mouse < 1) {
		drwstring(1,7,0,title,10,0);
		sprintf(buf,"Sorry, no mouse detected... Can not do the mouse demo.");
		drwstring(1,7,0,buf,10,16);
		ret = getkey();
		fillscreen(0);
		return(ret);
	}
	colr = 16;
	for(i=0;i<=maxx/2;i++) {
		drwcircle(1,colr,maxx/4 + i, maxy/2, maxy/5);
		colr+=2;
		if (colr>255)
			colr = 16;
	}

	/*
	 * Show mouseshow
	 */
	setview(0,0,maxx,31);
	fillview(0);   
	drwstring(1,7,0,title,10,0);
	sprintf(buf,"mouseshow();");
	drwstring(1,7,0,buf,10,16);
	setview(0,32,maxx,maxy);
	mouseenter(); /* MUST BE CALLED FIRST TO ENABLE MOUSE FUNCTIONS */
	mouseshow();
	ret = getkey();
	if ((ret=='s') || (ret=='q')) {
		mouseexit(); /* MUST BE CALLED TO DISABLE MOUSE FUNCTIONS */
		fillscreen(0);
		setview(0,0,maxx,maxy);
		return(ret);
	}

	/*
	 * Show mousestatus
	 */
	mousehide();
	setview(0,16,maxx,31);
	fillview(0);
	sprintf(buf,"mousestatus(xloc,yloc,mbuts);");
	drwstring(1,7,0,buf,10,16);
	mouseshow();
	setview(0,32,maxx,maxy);
	beep();
	while(!kbhit()) {
		lb = cb = rb = 0;
		mousestatus(&x,&y,&mbuts);
		if (mbuts & 1)
			lb = 1;
		if (mbuts & 2)
			rb = 1;
		if (mbuts & 4)
			cb = 1;
		sprintf(buf,"X= %4d  Y= %4d  LB= %1d  CB= %1d  RB= %1d",x,y,lb,cb,rb);
		drwstring(1,15,8,buf,10,32);
	}
	ret = (char)getch();
	if ( (ret == 'Q') || (ret == 'q') )
		endit = 1;
	if (ret == 'Q')
		ret = 'q';
	if (ret == 'S')
		ret = 's';
	if ((ret=='s') || (ret=='q')) {
		mouseexit(); /* MUST BE CALLED TO DISABLE MOUSE FUNCTIONS */
		fillscreen(0);
		setview(0,0,maxx,maxy);
		return(ret);
	}

	/*
	 * Show mousehide
	 */
	mousehide();
	setview(0,16,maxx,31);
	fillview(0);
	sprintf(buf,"mousehide(xloc,yloc,mbuts);");
	drwstring(1,7,0,buf,10,16);
	setview(0,32,maxx,maxy);
	beep();
	while(!kbhit()) {
		lb = cb = rb = 0;
		mousestatus(&x,&y,&mbuts);
		if (mbuts & 1)
			lb = 1;
		if (mbuts & 2)
			rb = 1;
		if (mbuts & 4)
			cb = 1;
		sprintf(buf,"X= %4d  Y= %4d  LB= %1d  CB= %1d  RB= %1d",x,y,lb,cb,rb);
		drwstring(1,15,8,buf,10,32);
	}
	ret = (char)getch();
	if ( (ret == 'Q') || (ret == 'q') )
		endit = 1;
	if (ret == 'Q')
		ret = 'q';
	if (ret == 'S')
		ret = 's';
	if ((ret=='s') || (ret=='q')) {
		mouseexit(); /* MUST BE CALLED TO DISABLE MOUSE FUNCTIONS */
		fillscreen(0);
		setview(0,0,maxx,maxy);
		return(ret);
	}

	/*
	 * Show mouserangeset
	 */
	mousehide();
	setview(0,16,maxx,maxy);
	fillview(0);
	sprintf(buf,"mouserangeset(x1,y1,x2,y2);");
	drwstring(1,7,0,buf,10,16);
	setview(0,32,maxx,maxy);
	spcing = (maxy - 32) / 3;
	x1 = spcing;
	y1 = 32 + spcing;
	x2 = maxx - spcing;
	y2 = maxy - spcing;
	drwbox(1,15,x1,y1,x2,y2);
	mouseshow();
	mouserangeset(x1,y1,x2,y2);
	ret = getkey();
	mouserangeset(0,0,maxx,maxy);
	if ((ret=='s') || (ret=='q')) {
		mouseexit(); /* MUST BE CALLED TO DISABLE MOUSE FUNCTIONS */
		fillscreen(0);
		setview(0,0,maxx,maxy);
		return(ret);
	}

	/*
	 * Show mousecursorset - use the magnifier
	 */
	setview(0,16,maxx,31);
	fillview(0);
	sprintf(buf,"mousecursorset(mousecursor);");
	drwstring(1,7,0,buf,10,16);
	setview(0,32,maxx,maxy);
	mousecursorset(&magmousecursor);
	ret = getkey();
	if ((ret=='s') || (ret=='q')) {
		mouseexit(); /* MUST BE CALLED TO DISABLE MOUSE FUNCTIONS */
		fillscreen(0);
		setview(0,0,maxx,maxy);
		return(ret);
	}

	/*
	 * Show mousecursorset - use the big arrow
	 */
	setview(0,32,maxx,maxy);
	mousecursorset(&bigmousecursor);
	ret = getkey();
	if ((ret=='s') || (ret=='q')) {
		mouseexit(); /* MUST BE CALLED TO DISABLE MOUSE FUNCTIONS */
		fillscreen(0);
		setview(0,0,maxx,maxy);
		return(ret);
	}

	/*
	 * Show mousecursorset - use the stopwatch
	 */
	setview(0,32,maxx,maxy);
	mousecursorset(&stwmousecursor);
	ret = getkey();
	if ((ret=='s') || (ret=='q')) {
		mouseexit(); /* MUST BE CALLED TO DISABLE MOUSE FUNCTIONS */
		fillscreen(0);
		setview(0,0,maxx,maxy);
		return(ret);
	}

	/*
	 * Show mousecursordefault
	 */
	mousehide();
	setview(0,16,maxx,31);
	fillview(0);
	sprintf(buf,"mousecursordefault();");
	drwstring(1,7,0,buf,10,16);
	mouseshow();
	setview(0,32,maxx,maxy);
	mousecursordefault();
	ret = getkey();
	mouseexit(); /* MUST BE CALLED TO DISABLE MOUSE FUNCTIONS */
	fillscreen(0);
	setview(0,0,maxx,maxy);

	return(ret);

}


/*********
 * DOGIF *
 *********/

char dogif(void)
{
	
	int endthis;
	int ext, length;
	char c, ret;
	char title[TITLEN];
	char buf[TITLEN];
	char *fname;

	fname=malloc(128);

	/*
	 * Setup the title
	 */
	sprintf(title,"DEMO 8: GIF functions");

	/*
	 * Show gifgetinfo
	 */
	setview(0,0,maxx,maxy);
	fillscreen(0);
	drwstring(1,7,0,title,10,0);
	endthis = 0;
	ret = '\0';

	while (!endthis) {
		sprintf(buf,"Please provide the name (and full path if not in the current drive/directory)");
		drwstring(1,7,0,buf,10,64);
		sprintf(buf,"of a GIF file you would like to see...");
		drwstring(1,7,0,buf,10,80);
		sprintf(buf,"Filename:");
		drwstring(1,7,0,buf,10,96);

		sprintf(fname,"_");
		length = 0;
		ext = 0;
		c = '\0';

		while(!ext) {
			drwstring(1,7,0,fname,82,96);
			c = (char)getch();
			if(c>=' ' && c<='~') {
				fname[length] = c;
				fname[length+1] = '_';
				fname[length+2] = '\0';
				length++;
			}
			else
				if (c==8 && length>0) {
					drwstring(1,15,0,"   ",82+length*8,96);
					length--;
					fname[length] = '_';
					fname[length+1] = '\0';
				}
				else
					if (c==13)
						ext = 1;
		}
		if (length==0) {
			free(fname);
			return(ret);
		}

		fname[length] = '\0';

		ret = showgif(fname);

		if ((ret=='s') || (ret=='q')) {
			fillscreen(0);
			free(fname);
			return(ret);
		}

		drwstring(1,7,0,title,10,0);
		sprintf(buf,"Would you like to see another (Y/N) ?");
		drwstring(1,7,0,buf,10,64);
		ext = 0;
		while(!ext) {
			c=(char)getch();
			if ((c=='n') || (c=='N')) {
				ext = 1;
				endthis = 1;
			}
			else
				if ((c=='y') || (c=='Y'))
					ext = 1;
		}
	}
	fillscreen(0);

	free(fname);
	
	return(ret);

}

/**************
 * DOJOYSTICK *
 **************/

char dojoystick(void)
{
	int maxxa, maxya, minxa, minya;
	int maxxb, maxyb, minxb, minyb;
	int jax, jay, jabuts, jbx, jby, jbbuts;
	int joystick, spcing, dist;
	int x1, y1, x2, y2, x3, y3, x4, y4;
	int cntax, cntay, cntbx, cntby;
	int rangexa, rangeya, rangexb, rangeyb;
	int jabax, jabay, jabbx, jabby;
	int jbbax, jbbay, jbbbx, jbbby;
	int oax, oay, obx, oby;
	char ret;
	char title[TITLEN];
	char buf[TITLEN];

	oax = oay = obx = oby = 0;

	/*
	 * Set up the title
	 */
	sprintf(title,"DEMO 10: Joystick functions");
	palset(pal,0,255);
	fillscreen(0);
	setview(0,0,maxx,maxy);
	drwstring(1,7,0,title,10,0);

	/*
	 * Check to see if we have a joystick so we can do the joystick demo
	 */
	joystick = whichjoystick();
	if (joystick < 1) {
		sprintf(buf,"Sorry, no joystick detected... Can not do the joystick demo.");
		drwstring(1,7,0,buf,10,16);
		ret = getkey();
		fillscreen(0);
		return(ret);
	}

	/*