Functii Grafice În C

Funcia closegraph se folosete atunci cnd vrei s iei din modul grafic :

Declaraie : void closegraph();#include

#include

int main(){

int gd = DETECT, gm;

// iniializare mod grafic initgraph(&gd,&gm,"C:\\TC\\BGI"); // iniializare mod grafic outtext("Press any key to close the graphics mode...");

getch();

closegraph();

return 0;

}

NU folosi clrscr( ) n modul grafic !!!! Dac vrei s curei ecranul, folosete funcia cleardevice :

Declaraie : void cleardevice();

#include

#include

int main(){


initgraph(&gd,&gm,"C:\\TC\\BGI");

outtext("Press any key to clear the screen."); // Afieaz un text n modul grafic getch();

cleardevice();

outtext("Press any key to exit..."); // Afieaz un text n modul grafic getch();

closegraph();

return 0;

}

Funcia outtext n C ( afieaz un text la poziia respectiv ) :

Declrarare : void outtext(char *string); #include

#include

int main(){



outtext("To display text at a particular position on the screen use outtextxy");

getch();

closegraph();

return 0;

}

Funcia outtextxy n C ( afieaz un text la o poziie specificat ) :

Declaraie : void outtextxy(int x, int y, char *string); #include

#include

int main(){



outtextxy(100, 100, "Outtextxy function");

getch();

closegraph();

return 0;

}

Unde 100, 100 reprezint coordonatele punctului de unde va ncepe afiarea textului.

Arc de cerc n C :Declaraie : void arc(int x, int y, int stangle, int endangle, int radius);

#include

#include

int main(){ int gd = DETECT, gm;


arc(100, 100, 0, 135, 50);

getch();

closegraph();

return 0;

}Unde 100, 100 reprezint coordonatele centrului arcului de cerc, 0 e unghiul de nceput, 135 unghiul final iar 50 raza arcului de cerc...Output :

Cum desenm un dreptunghi, ptrat n C :Declaraie : void bar(int left, int top, int right, int bottom);#include

#include



bar(100, 100, 200, 200);

getch();

closegraph();

return 0;

}

Output :

Unde 100, 100 reprezint distana din colul sus-stnga iar 200, 200 laturile patratului...

Cum desenm un dreptunghi, ptrat 3D n C :Declaratie : void bar3d(int left, int top, int right, int bottom, int depth, int topflag);#include

#include

int main(){



bar3d(100, 100, 200, 200, 20, 1);

getch();

closegraph();

return 0;

}

Output :

Cum desenm un cerc n C :Declaraie : void circle(int x, int y, int radius);

#include

#include

int main(){



circle(100, 100, 50);

getch();

closegraph();

return 0;

}

Unde 100,100 reprezint coordonatele centrului cercului iar 50 raza cercului.

Output :

Funcia floodfill n C (folosit pentru a umple o suprafa nchis, exemplu, cercul) :

Declaraie : void floodfill(int x, int y, int border);#include

#include

int main(){



setcolor(RED);

circle(100,100,50);

floodfill(100,100,RED);

getch();

closegraph();

return 0;

}

Output of program:

Cum desenm o elips n C :

Declaratie : void ellipse(int x, int y, int stangle, int endangle, int xradius, int yradius);

#include

#include

int main(){


initgraph(&gd, &gm, "C:\\TC\\BIN");

ellipse(100, 100, 0, 360, 50, 25);

getch();

closegraph();

return 0;

}

Output :

Cum desenm poligoane n C :

Declaraie : void drawpoly( int num, int *polypoints );

#include

#include

int main(){


int points[] = { 320, 150, 420, 300, 250, 300, 320, 150};


drawpoly(4, points);

getch();

closegraph();

return 0;

}Unde vectorul points conine coordonatele punctelor. (320, 150),(420, 300) i (250, 300). Ultimul punct - (320, 150) Output :

Funcia fillpoly n C (folosit pentru a umple coninutul poligoanelor ) :

Declaraie : void drawpoly( int num, int *polypoints );#include

#include

int main(){


int points[] = { 320, 150, 440, 340, 230, 340, 320, 150 };


fillpoly(4, points);

getch();

closegraph();

return 0;

}

Output of program :

Funcia fillellipse n C :

Declaratie : void fillellipse(int x, int y, int xradius, int yradius);#include

#include

int main(){


initgraph(&gd, &gm, "C:\\TC\\BGI");

fillellipse(100, 100, 50, 25);

getch();

closegraph();

return 0;

}

Output :

Funcia getarcoords n C (folosit pentru a obine coordonatele ultimului cerc desenat ) :

Declaraie : void getarccoords(struct arccoordstype *var); #include

#include

#include

int main(){


struct arccoordstype a;

char arr[100];


arc(250,200,0,90,100);

getarccoords(&a);

sprintf(arr,"(%d, %d)",a.xstart,a.ystart);

outtextxy(360,195,arr);

sprintf(arr,"(%d, %d)",a.xend,a.yend);

outtextxy(245,85,arr);

getch();

closegraph();

return 0;

}

Funcia getbkcolor n C ( returneaz culoarea de fundal ):

Declaraie : int getbkcolor();#include

#include

int main(){


int bkcolor;

char a[100];


bkcolor = getbkcolor();

sprintf(a,"Current background color = %d",bkcolor);

outtextxy(0, 0, a);

getch();

closegraph();

return 0;

}Funcia getcolor n C ( returneaz culoarea cu care se deseneaz ) :

Declaraie : int getcolor(); #include

#include

int main(){


int dwcolor;

char a[100];


dwcolor = getcolor();

sprintf(a,"Current drawing color = %d ",dwcolor);

outtextxy(0, 0, a);

getch();

closegraph();

return 0;

}

Funcia getdrivername n C ( returneaz un pointer ctre driverul grafic ) :

#include

#include

int main(){


char *drivername;


drivername = getdrivername();

outtextxy(200, 200, drivername);

getch();

closegraph();

return 0;

}

Funcia getmaxcolor n C ( returneaz valoarea culorii maxime suportate de modul grafic i de driver ) : Declaraie : int getmaxcolor();#include

#include

int main(){


int maxcolor;

char a[100];


maxcolor = getmaxcolor();

sprintf(a,"Maximum number of colors for current graphics mode and driver = %d",maxcolor+1);

outtextxy(0, 40, a);

getch();

closegraph();

return 0;

}Funcia getmaxx n C ( returneaz valoarea maxim a lui X pe axa de coordonate n modul grafic ) : Declaraie : int getmaxx();#include

#include


int maxx;

char a[100];


maxx = getmaxx();

sprintf(a,"Maximum X coordinate for current graphics mode and driver = %d.",maxx);

outtext(a);

getch();

closegraph();

return 0;

}

Funcia getmaxy n C ( returneaz valoarea maxim a lui Y pe axa de coordonate n modul grafic ) : Declaraie : int getmaxy();#include

#include


int maxy;

char a[100];


maxy = getmaxy();

sprintf(a,"Maximum Y coordinate for current graphics mode and driver is = %d.",maxy);

outtext(a);

getch();

closegraph();

return 0;

}

Funcia getpixel n C ( returneaz culoarea unei pixel de pe poziia respectiv ) :Declaraie : int getpixel(int x, int y);#include

#include

int main(){


int color;

char array[50];


color = getpixel(0, 0);

sprintf(array,"color of pixel at (0,0) = %d",color);

outtext(array);

getch();

closegraph();

return 0;

}

Funcia getx n C ( returneaz poziia lui X pe axa de coordonate ) :

Declaraie : int getx();#include

#include

int main(){


char array[100];


sprintf(array, "Current position of x = %d",getx());

outtext(array);

getch();

closegraph();

return 0;

}

Funcia gety n C ( returneaz poziia lui Y pe axa de coordonate ) :

Declaraie : int gety();#include

#include

int main(){


char message[100];


sprintf(message, "Current position of y = %d",gety());

outtext(message);

getch();

closegraph();

return 0;

}

Funcia graphdefaults n C ( reseteaz toate funciile grafice la default, valoarea iniial ) :

Declaraie : void graphdefaults(); #include

#include

int main(){



setcolor(RED);

setbkcolor(YELLOW);

circle(250, 250, 50);

getch();

graphdefaults();

getch();

closegraph();

return 0;

}

Funcia grapherrormsg n C ( returneaz un mesaj de tip string n cazul unei erori ) :

Declaraie : char *grapherrormsg( int errorcode ); #include

#include

#include

int main(){

int gd, gm, errorcode;


errorcode = graphresult();

if(errorcode != grOk){

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to exit.");

getch();

exit(1);

}

getch();

closegraph();

return 0;

}

Funcia imagesize n C ( returneaz numrul de bites necesari pentru memorarea unei imagini pe bii ) :

Declarare : unsigned int imagesize(int left, int top, int right, int bottom);#include

#include

int main(){

int gd = DETECT, gm, bytes;

char array[100];


circle(200, 200, 50);

line(150, 200, 250, 200);

line(200, 150, 200, 250);

bytes = imagesize(150, 150, 250, 250);

sprintf(array, "Number of bytes required to store required area = %d", bytes);

outtextxy(10, 280, array);

getch();

closegraph();

return 0;

}

Output :

Funcia line n C ( funcie ce deseneaz o linie folosind coordonate ) :

Declaraie : void line(int x1, int y1, int x2, int y2); #include

#include

int main(){



line(100, 100, 200, 200);

getch();

closegraph();

return 0;

}

O linie desenat din punctul (100, 100) la punctul (200, 200).

Output :

Funcia lineto n C ( deseneaz o linie din poziia curent ctre un punct ) :

#include

#include

int main(){



moveto(100, 100);

lineto(200, 200);

getch();

closegraph();

return 0;

}

Funcia linerel n C ( deseneaz o linie din poziia curent ctre un punct la o distan relativ ) :

#include

#include

int main(){



moveto(250, 250);

linerel(100, -100);

getch();

closegraph();

return 0;

}

Funcia moveto n C ( funcie folosit pentru a schimba poziia curent ctre o poziie dat ) :

Declaraie : void moveto(int x, int y); #include

#include

int main(){


char msg[100];


sprintf(msg, "X = %d, Y = %d",getx(),gety());

outtext(msg);

moveto(50, 50);

sprintf(msg, "X = %d, Y = %d", getx(), gety());

outtext(msg);

getch();

closegraph();

return 0;

}

Funcia moverel n C ( funcie folosit pentru a schimba poziia curent ctre o poziie la o distan relativ ):

Declaraie : void moverel(int x, int y);#include

#include

int main(){


int x, y;

char message[100];


moveto(100, 100);

moverel(100, -100);

x = getx();

y = gety();

sprintf(message, "Current x position = %d and y position = %d", x, y);

outtextxy(10, 10, message);

getch();

closegraph();

return 0;

}

Funcia pieslice n C :

#include

#include

int main(){



pieslice(200,200,0,135,100);

getch();

closegraph();

return 0;

}

Output of program:

Funcia putpixel n C ( coloreaz un pixel de coordonate x i y cu o culoare dat ) :

Declarare : void putpixel(int x, int y, int color);#include

#include

int main(){



putpixel(25, 25, RED);

getch();

closegraph();

return 0;

}

Funcia rectangle n C ( deseneaz un rectangular ) :

Declarare : void rectangle(int left, int top, int right, int bottom);#include

#include

int main(){



rectangle(100,100,200,200);

getch();

closegraph();

return 0;

}

Output :

Funcia sector n C :

Declarare : void sector( int x, int y, int stangle, int endangle, int xradius, int yradius); #include

#include

int main(){



sector(100, 100, 0, 135, 25, 35);

getch();

closegraph();

return 0;

}

Funcia setbkcolor n C ( schimb culoarea de fundal ) :

Declarare : void setbkcolor(int color); #include

#include

int main(){



outtext("Press any key to change the background color to GREEN");

getch();

setbkcolor(GREEN);

getch();

closegraph();

return 0;

}

Funcia setcolor n C :

Declarare : void setcolor(int color);#include

#include

int main(){



circle(100,100,50); /* drawn in white color */

setcolor(RED);

circle(200,200,50); /* drawn in red color */

getch();

closegraph();

return 0;

}

Output :

Funcia setfillstyle n C ( seteaz stilul i culoarea de umplere ) :

Declarare : void setfillstyle( int pattern, int color);#include

#include

int main(){



setfillstyle(XHATCH_FILL, RED);

circle(100, 100, 50);

floodfill(100, 100, WHITE);

getch();

closegraph();

return 0;

}

Output :

Funcia settextstyle n C ( funcie folosit pentru a schimba modul de afiare a textului ) : Declarare : void settextstyle( int font, int direction, int charsize);#include

#include

int main(){


int x = 25, y = 25;

int font = 0;

initgraph(&gd,&gm,"C:\\TC\\BIN");

for ( font = 0 ; font < 9 ; font++)

{

settextstyle(font, HORIZ_DIR, 1);

outtextxy(x, y, "Text with different fonts");

y = y + 25;

}

getch();

closegraph();

return 0;

}

Funcia setviewport n C ( funcie folosit pentru a restriciona desenarea pe anumite poriuni a ecranului ) : Declarare : void setviewport(int left, int top, int right, int bottom, int clip);#include

#include

int main(){


int midx, midy;


midx = getmaxx()/2;

midy = getmaxy()/2;

setviewport(midx - 50, midy - 50, midx + 50, midy + 50, 1);

circle(50, 50, 55);

getch();

closegraph();

return 0;

}

Output of program:

Funcia textheight n C ( returneaz nlimea unui text n pixeli ) :

Declarare : int textheight(char *string);#include

#include

int main(){


int height;

char arr[100];


height = textheight("C programming");

sprintf(arr,"Textheight = %d",height);

outtext(arr);

getch();

closegraph();

return 0;

}

Funcia textwidth n C ( returneaz limea unui text n pixeli ) :

Declarare : int textwidth(char *string); #include

#include

int main(){


int width;

char arr[100];


width = textwidth("programming");

sprintf(arr,"Textwidth = %d",width);

outtext(arr);

getch();

closegraph();

return 0;

}

Funcii pentru maus n C

Verific dac exist suport pentru maus :

#include

#include

int initmouse();

union REGS i, o;

int main(){

int status;

status = initmouse();

if ( status == 0 )

printf("Mouse support not available.\n");

else

printf("Mouse support available.\n");

getch();

return 0;

}

int initmouse()

{

i.x.ax = 0;

int86(0X33,&i,&o);

return ( o.x.ax );

}

Output:

Afieaz maus-ul n modul grafic :#include

#include

#include

int initmouse();

void showmouseptr();

union REGS i, o;

int main(){

int status;




if ( status == 0 )


else

showmouseptr();

getch();

return 0;

}

int initmouse(){

i.x.ax = 0;

int86(0X33,&i,&o);

return ( o.x.ax );

}

void showmouseptr(){

i.x.ax = 1;

int86(0X33,&i,&o);

}

Output :

Ascunde mause-ul n modul grafic :#include

#include

#include

int initmouse();

void showmouseptr();

void hidemouseptr();

union REGS i, o;

int main(){

int status, count = 1;




if ( status == 0 )


else{ showmouseptr();

while(count0)

{

movemouseptr(tempx, tempy);

x = tempx;

y = tempy;

}

tempx = x;

tempy = y;

}

closegraph();

return 0;

}

Deseneaz forme n C :#include

#include

int main(){


int left = 100,top = 100, right = 200, bottom = 200;

int x = 300, y = 150, radius = 50;


rectangle(left, top, right, bottom);

circle(x, y, radius);

bar(left + 300, top, right + 300, bottom);

line(left - 10, top + 150, left + 410, top + 150);

ellipse(x, y + 200, 0, 360, 100, 50);

outtextxy(left + 100, top + 325, "My First C Graphics Program");

getch();

closegraph();

return 0;

}

Deseneaz grafic n C :

#include

#include

int main(){



setcolor(YELLOW);

rectangle(0,30,639,450);

settextstyle(SANS_SERIF_FONT,HORIZ_DIR,2);

setcolor(WHITE);

outtextxy(275,0,"Bar Chart");

setlinestyle(SOLID_LINE,0,2);

line(100,420,100,60);

line(100,420,600,420);

line(90,70,100,60);

line(110,70,100,60);

line(590,410,600,420);

line(590,430,600,420);

outtextxy(95,35,"Y");

outtextxy(610,405,"X");

outtextxy(85,415,"O");

setfillstyle(LINE_FILL,BLUE);

bar(150,100,200,419);

setfillstyle(XHATCH_FILL,RED);

bar(225,150,275,419);

setfillstyle(WIDE_DOT_FILL,GREEN);

bar(300,200,350,419);

setfillstyle(INTERLEAVE_FILL,MAGENTA);

bar(375,125,425,419);

setfillstyle(HATCH_FILL,BROWN);

bar(450,175,500,419);

getch();

return 0;

}

Deseneaz diagram circular :#include

#include

int main(){


int midx, midy;


setcolor(MAGENTA);

rectangle(0,40,639,450);


setcolor(WHITE);

outtextxy(275,10,"Pie Chart");

midx = getmaxx()/2;

midy = getmaxy()/2;


pieslice(midx, midy, 0, 75, 100);

outtextxy(midx+100, midy - 75, "20.83%");



outtextxy(midx-175, midy - 75, "41.67%");



outtextxy(midx+75, midy + 75, "37.50%");

getch();

return 0;

}

Diagram 3D :

#include

#include

int main(){



setcolor(YELLOW);

rectangle(0,30,639,450);


setcolor(WHITE);

outtextxy(275,0,"Bar Chart");

setlinestyle(SOLID_LINE,0,2);

line(100,420,100,60);

line(100,420,600,420);

line(90,70,100,60);

line(110,70,100,60);

line(590,410,600,420);

line(590,430,600,420);

outtextxy(95,35,"Y");

outtextxy(610,405,"X");

outtextxy(85,415,"O");


bar(150,100,200,419);


bar(225,150,275,419);


bar(300,200,350,419);

setfillstyle(INTERLEAVE_FILL,MAGENTA);

bar(375,125,425,419);

setfillstyle(HATCH_FILL,BROWN);

bar(450,175,500,419);

getch();

return 0;

}

Animaie :

#include

#include

#include

int main(){

int gd = DETECT,gm;

int area, temp1, temp2;

int left = 25, top = 75;

char *p;


setcolor(YELLOW);

circle(50,100,25);

setfillstyle(SOLID_FILL,YELLOW);

floodfill(50,100,YELLOW);

setcolor(BLACK);

setfillstyle(SOLID_FILL,BLACK);

fillellipse(44,85,2,6);

fillellipse(56,85,2,6);

ellipse(50,100,205,335,20,9);

ellipse(50,100,205,335,20,10);

ellipse(50,100,205,335,20,11);

area = imagesize(left, top, left + 50, top + 50);

p = malloc(area);

setcolor(WHITE);


outtextxy(155,451,"Smiling Face Animation");

setcolor(BLUE);

rectangle(0,0,639,449);

while(!kbhit()){

temp1 = 1 + random ( 588 );

temp2 = 1 + random ( 380 );

getimage(left, top, left + 50, top + 50, p);

putimage(left, top, p, XOR_PUT);

putimage(temp1 , temp2, p, XOR_PUT);

delay(100);

left = temp1;

top = temp2;

}

getch();

closegraph();

return 0;

}

Captcha program :#include

#include

#include

int main(){

int i = 0, key, num, midx;


char a[10];


midx = getmaxx()/2;

settextstyle(SCRIPT_FONT,HORIZ_DIR,5);

settextjustify(CENTER_TEXT,CENTER_TEXT);

setcolor(GREEN);

outtextxy(midx,20,"CAPTCHA");

settextstyle(SCRIPT_FONT,HORIZ_DIR,2);

outtextxy(midx,125,"Press any key to change the generated random code \"captcha\"");

outtextxy(midx,150,"Press escape key to exit...");

setcolor(WHITE);

setviewport(100,200,600,400,1);

setcolor(RED);

randomize();

while(1){

while(i

Date post:	10-Nov-2015
Category:	Documents
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Functii Grafice În C

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