//Bresenham
int main() { int gd = DETECT, gm;
int x1, x2, y1, y2, dy, dx, p;
printf("Enter starting points (x1, y1) = ");
scanf("%d%d", &x1, &y1);
printf("Enter ending points (x2, y2) = ");
scanf("%d%d", &x2, &y2);
dy = abs(y2 - y1);
dx = abs(x2 - x1);
p = 2 * dy - dx;initgraph(&gd, &gm,(char*)""); while (x1 != x2) { putpixel(x1, y1, WHITE);
if (dy < dx) {
if (p < 0) {
x1++;
p = p + 2 * dy;
} else {
x1++;
y1++;
p = p + 2 * dy - 2 * dx;
}
} else {
if (p < 0) {
y1++;
p = p + 2 * dx;
} else {
x1++;
y1++;
p = p + 2 * dx - dy;
}
}
}getch(); closegraph();
}
//DDA
int main() { int gd = DETECT, gm; initgraph(&gd, &gm, "");
float x1, x2, y1, y2, dy, dx;
printf("Enter starting points (x1, y1) = ");
scanf("%f%f", &x1, &y1);
printf("Enter ending points (x2, y2) = ");
scanf("%f%f", &x2, &y2);
dy = abs(y2 - y1);
dx = abs(x2 - x1);
while (x1 != x2) {
putpixel(x1, y1, WHITE);
if (dx >= dy) {
x1++;
y1 += (dy / dx);
} else {
x1 += (dx / dy);
y1++;
}
}
getch();
closegraph();
return 0;}
//boundary fill
void boundaryfill(int x, int y, int f_color, int b_color) { if (getpixel(x, y) != b_color && getpixel(x, y) != f_color) { putpixel(x, y, f_color); boundaryfill(x + 1, y, f_color, b_color); boundaryfill(x, y + 1, f_color, b_color); boundaryfill(x - 1, y, f_color, b_color); boundaryfill(x, y - 1, f_color, b_color); } }
int main() { int gm, gd = DETECT, radius; int x, y;
printf("Enter x and y positions for circle: ");
scanf("%d %d", &x, &y);
printf("Enter radius of circle: ");
scanf("%d", &radius);
initwindow(800, 600); // Use initwindow instead of initgraph
circle(x, y, radius);
boundaryfill(x, y, 4, 15);
delay(5000);
closegraph();    return 0; } ///floodfill
void flood(int x, int y, int fillColor, int boundaryColor);
int main() { int gd = DETECT, gm; initgraph(&gd, &gm, "C:\Turboc3\BGI");
int x1, y1, x2, y2;
printf("Enter the coordinates of the top-left corner (x1 y1): ");
scanf("%d %d", &x1, &y1);
printf("Enter the coordinates of the bottom-right corner (x2 y2): ");
scanf("%d %d", &x2, &y2);
rectangle(x1, y1, x2, y2);
flood((x1 + x2) / 2, (y1 + y2) / 2, 10, getpixel(x1 + 5, y1 + 5)); // Start flood fill from inside the rectangle
getch();
closegraph();
return 0;}
void flood(int x, int y, int fillColor, int boundaryColor) { if (getpixel(x, y) == boundaryColor) { delay(1); putpixel(x, y, fillColor); flood(x + 1, y, fillColor, boundaryColor); flood(x - 1, y, fillColor, boundaryColor); flood(x, y + 1, fillColor, boundaryColor); flood(x, y - 1, fillColor, boundaryColor); Â Â Â Â } }
//midpoiny
int main() { int x1, y1, r, d, x0, y0; int gd = DETECT, gm;
printf("Enter x1: ");
scanf("%d", &x1);
printf("Enter y1: ");
scanf("%d", &y1);
printf("Enter radius (r): ");
scanf("%d", &r);
d = 3 - 2 * r;
x0 = x1; // Set the center x-coordinate
y0 = y1; // Set the center y-coordinate
initgraph(&gd, &gm, NULL);
x1 = 0;
y1 = r;
while (x1 <= y1) {
putpixel(x1 + x0, y1 + y0, WHITE);
putpixel(y1 + x0, x1 + y0, WHITE);
putpixel(-x1 + x0, y1 + y0, WHITE);
putpixel(-y1 + x0, x1 + y0, WHITE);
putpixel(-x1 + x0, -y1 + y0, WHITE);
putpixel(-y1 + x0, -x1 + y0, WHITE);
putpixel(x1 + x0, -y1 + y0, WHITE);
putpixel(y1 + x0, -x1 + y0, WHITE);
if (d < 0) {
d = d + 4 * x1 + 6;
} else {
d = d + 4 * (x1 - y1) + 10;
y1--;
}
x1++;
}
getch();
closegraph();    return 0; }
//bezier
// Function to draw a Bezier curve void drawBezierCurve(int x[4], int y[4]) { double put_x, put_y, t;
// Iterate through values of t from 0 to 1
for (t = 0.0; t <= 1.0; t += 0.001) {
// Calculate the x and y coordinates using the Bezier formula
put_x = pow(1 - t, 3) * x[0] + 3 * t * pow(1 - t, 2) * x[1] + 3 * t * t * (1 - t) * x[2] + pow(t, 3) * x[3];
put_y = pow(1 - t, 3) * y[0] + 3 * t * pow(1 - t, 2) * y[1] + 3 * t * t * (1 - t) * y[2] + pow(t, 3) * y[3];
putpixel((int)put_x, (int)put_y, WHITE); // Plot the point on the curve
}}
int main() { int x[4], y[4], i; int gd = DETECT, gm;
// Initialize the graphics system
initgraph(&gd, &gm, "C:\\TURBOC3\\BGI");
if (graphresult() != grOk) {
printf("Graphics initialization failed. Exiting...\n");
return 1;
}
printf("****** Bezier Curve ***********\n");
printf("Please enter x and y coordinates:\n");
// Input control points
for (i = 0; i < 4; i++) {
scanf("%d %d", &x[i], &y[i]);
putpixel(x[i], y[i], 3); // Plot the control points
}
// Draw the Bezier curve
drawBezierCurve(x, y);
getch();
closegraph(); // Close the graphics system    return 0; }
//scaling
int main() { int x, y, x1, y1, x2, y2; int gd = DETECT, gm; initgraph(&gd, &gm, "C:\TDM-GCC-32\BGI");
printf("\t\t\t********** Scaling ***********\n");
printf("\n\t\t\t Please enter first coordinate of Triangle = ");
scanf("%d %d", &x, &y);
printf("\n\t\t\t Please enter second coordinate of Triangle = ");
scanf("%d %d", &x1, &y1);
printf("\n\t\t\t Please enter third coordinate of Triangle = ");
scanf("%d %d", &x2, &y2);
// Set drawing color
setcolor(RED);
// Draw the original triangle
line(x, y, x1, y1);
line(x1, y1, x2, y2);
line(x2, y2, x, y);
// Take input for scaling factors
int scl_fctr_x, scl_fctr_y;
printf("\n\t\t\t Now Enter Scaling factor x and y: ");
scanf("%d %d", &scl_fctr_x, &scl_fctr_y);
// Apply scaling factors to the coordinates
x = x * scl_fctr_x;
x1 = x1 * scl_fctr_x;
x2 = x2 * scl_fctr_x;
y = y * scl_fctr_y;
y1 = y1 * scl_fctr_y;
y2 = y2 * scl_fctr_y;
// Set drawing color to white
setcolor(WHITE);
// Draw the scaled triangle
line(x, y, x1, y1);
line(x1, y1, x2, y2);
line(x2, y2, x, y);
getch();
closegraph();    return 0; }
//translation
int main() { int gd=DETECT,gm; int x,y,x1,y1,x2,y2,tx,ty; initgraph(&gd,&gm,"C:\TDM-GCC-32\bin"); printf("\n Please enter first coordinate of the triangle= "); scanf("%d %d", &x,&y); printf("\n Enter second coordinate of the trinagle = "); scanf("%d %d",&x1,&y1); printf("\n Enter third coordinate of the triangle = "); scanf("%d %d",&x2,&y2); printf("\n\t\t** TRIANGLE before & after translation ***"); line(x,y,x1,y1); line(x1,y1,x2,y2); line(x2,y2,x,y); printf("\n Now enter the translation vector = "); scanf("%d %d",&tx,&ty); setcolor(RED);
line(x+tx,y+ty,x1+tx,y1+ty);
line(x1+tx,y1+ty,x2+tx,y2+ty);
line(x2+tx,y2+ty,x+tx,y+ty);
getch();
closegraph();
return 0;
}#include
int main() { int gd=DETECT,gm; int x,y,x1,y1,x2,y2,tx,ty; initgraph(&gd,&gm,"C:\TDM-GCC-32\bin"); printf("\n Please enter first coordinate of the triangle= "); scanf("%d %d", &x,&y); printf("\n Enter second coordinate of the trinagle = "); scanf("%d %d",&x1,&y1); printf("\n Enter third coordinate of the triangle = "); scanf("%d %d",&x2,&y2); printf("\n\t\t** TRIANGLE before & after translation ***"); line(x,y,x1,y1); line(x1,y1,x2,y2); line(x2,y2,x,y); printf("\n Now enter the translation vector = "); scanf("%d %d",&tx,&ty); setcolor(RED);
line(x+tx,y+ty,x1+tx,y1+ty); line(x1+tx,y1+ty,x2+tx,y2+ty); line(x2+tx,y2+ty,x+tx,y+ty); getch(); closegraph(); return 0; }
//rotation
int main() { int gd = DETECT, gm; int x1, y1, x2, y2; double s, c, angle; int x1_new, y1_new, x2_new, y2_new;
initgraph(&gd, &gm, "C:\\TDM-GCC-32\\BGI");
setcolor(RED);
printf("Enter coordinates of the line: ");
scanf("%d %d %d %d", &x1, &y1, &x2, &y2);
printf("Enter rotation angle (in degrees): ");
scanf("%lf", &angle);
// Store the original coordinates in new variables
x1_new = x1;
y1_new = y1;
x2_new = x2;
y2_new = y2;
setbkcolor(WHITE);
line(x1_new, y1_new, x2_new, y2_new);
getch();
setbkcolor(WHITE);
c = cos(angle * 3.14159265 / 180);
s = sin(angle * 3.14159265 / 180);
// Calculate the new coordinates
x1_new = floor(x1 * c + y1 * s);
y1_new = floor(-x1 * s + y1 * c);
x2_new = floor(x2 * c + y2 * s);
y2_new = floor(-x2 * s + y2 * c);
cleardevice();
setcolor(RED);
line(x1_new, y1_new, x2_new, y2_new);
getch();
closegraph();    return 0; }
//shearing
int main() { int gd=DETECT,gm; int x,y,x1,y1,x2,y2,shear_f; initgraph(&gd,&gm,"C:\TDM-GCC-32\bin"); printf("\n please enter first coordinate = "); scanf("%d %d",&x,&y); printf("\n please enter second coordinate = "); scanf("%d %d",&x1,&y1); printf("\n please enter third coordinate = "); scanf("%d %d",&x2,&y2); printf("\n please enter shearing factor x = "); scanf("%d",&shear_f); cleardevice(); line(x,y,x1,y1); line(x1,y1,x2,y2); line(x2,y2,x,y); setcolor(YELLOW); x=x+ yshear_f; x1=x1+ y1shear_f; x2=x2+ y2*shear_f; line(x,y,x1,y1); line(x1,y1,x2,y2); line(x2,y2,x,y); getch(); closegraph(); return 0; }
//reflection xy
int main() { int gd = DETECT, gm; initgraph(&gd, &gm, "C:\Turboc3\BGI"); // Change the path to match your environment
int x, y; // Coordinates of the original point
// Input the coordinates of the original point
printf("Enter the X coordinate of the point: ");
scanf("%d", &x);
printf("Enter the Y coordinate of the point: ");
scanf("%d", &y);
// Draw the original point
putpixel(x, y, WHITE);
// Perform reflection along the X-axis
int x_reflected = x;
int y_reflected = -y;
// Perform reflection along the Y-axis
x_reflected = -x_reflected;
// Draw the point after both reflections
putpixel(x_reflected, y_reflected, WHITE); // Change the color to RED
getch();
closegraph();
return 0;}
//reflection y 2D REFLECTION Y AXIS
// Function to perform 2D reflection along the y-axis void reflectY(int x, int y) { int new_x = -x; int new_y = y;
// Draw the original point
putpixel(x, y, RED);
// Draw the reflected point
putpixel(new_x, new_y, BLUE);
delay(5000); // Display the points for 5 seconds
closegraph();}
int main() { int gd = DETECT, gm; initgraph(&gd, &gm, NULL);
int x, y;
printf("Enter the original point (x y): ");
scanf("%d %d", &x, &y);
reflectY(x, y);    return 0; }
//reflection x
// C program for the above approach
// Driver Code void main() { // Initialize the drivers int gm, gd = DETECT, ax, x1 = 100; int x2 = 100, x3 = 200, y1 = 100; int y2 = 200, y3 = 100;
// Add in your BGI folder path
// like below initgraph(&gd, &gm,
// "C:\\TURBOC3\\BGI");
initgraph(&gd, &gm, "");
cleardevice();
// Draw the graph
line(getmaxx() / 2, 0, getmaxx() / 2,
getmaxy());
line(0, getmaxy() / 2, getmaxx(),
getmaxy() / 2);
// Object initially at 2nd quadrant
printf("Before Reflection Object"
" in 2nd Quadrant");
// Set the color
setcolor(14);
line(x1, y1, x2, y2);
line(x2, y2, x3, y3);
line(x3, y3, x1, y1);
getch();
// After reflection
printf("\nAfter Reflection");
// Reflection along origin i.e.,
// in 4th quadrant
setcolor(4);
line(getmaxx() - x1, getmaxy() - y1,
getmaxx() - x2, getmaxy() - y2);
line(getmaxx() - x2, getmaxy() - y2,
getmaxx() - x3, getmaxy() - y3);
line(getmaxx() - x3, getmaxy() - y3,
getmaxx() - x1, getmaxy() - y1);
// Reflection along x-axis i.e.,
// in 1st quadrant
setcolor(3);
line(getmaxx() - x1, y1,
getmaxx() - x2, y2);
line(getmaxx() - x2, y2,
getmaxx() - x3, y3);
line(getmaxx() - x3, y3,
getmaxx() - x1, y1);
// Reflection along y-axis i.e.,
// in 3rd quadrant
setcolor(2);
line(x1, getmaxy() - y1, x2,
getmaxy() - y2);
line(x2, getmaxy() - y2, x3,
getmaxy() - y3);
line(x3, getmaxy() - y3, x1,
getmaxy() - y1);
getch();
// Close the graphics
closegraph(); }