# Midpoint ellipse drawing algorithm

Mid-point Ellipse algorithm is used to draw an ellipse in computer graphics.

Also refer : Midpoint line algorithm, Midpoint circle algorithm Midpoint ellipse algorithm plots(finds) points of an ellipse on the first quadrant by dividing the quadrant into two regions.
Each point(x, y) is then projected into other three quadrants (-x, y), (x, -y), (-x, -y) i.e. it uses 4-way symmetry.

Function of ellipse:

fellipse(x, y)=ry2x2+rx2y2-rx2ry2
fellipse(x, y)<0 then (x, y) is inside the ellipse.
fellipse(x, y)>0 then (x, y) is outside the ellipse.
fellipse(x, y)=0 then (x, y) is on the ellipse.

Decision parameter:
Initially, we have two decision parameters p10 in region 1 and p20 in region 2.
These parameters are defined as : p10 in region 1 is given as :

p10=ry2+1/4rx2-rx2ry

Mid-Point Ellipse Algorithm :

1. Take input radius along x axis and y axis and obtain center of ellipse.
2. Initially, we assume ellipse to be centered at origin and the first point as : (x, y0)= (0, ry).
3. Obtain the initial decision parameter for region 1 as: p10=ry2+1/4rx2-rx 2ry
4. For every xk position in region 1 :

If p1k<0 then the next point along the is (xk+1 , yk) and p1k+1=p1k+2ry2xk+1+ry2

Else, the next point is (xk+1, yk-1 )
And p1k+1=p1k+2ry2xk+1 – 2rx2yk+1+ry2

5. Obtain the initial value in region 2 using the last point (x0, y0) of region 1 as: p20=ry2(x0+1/2)2+rx2 (y0-1)2-rx2ry2
6. At each yk in region 2 starting at k =0 perform the following task.

If p2k>0 the next point is (xk, yk-1) and p2k+1=p2k-2rx2yk+1+rx2

7. Else, the next point is (xk+1, yk -1) and p2k+1=p2k+2ry2xk+1 -2rx2yk+1+rx2
8. Now obtain the symmetric points in the three quadrants and plot the coordinate value as: x=x+xc, y=y+yc
9. Repeat the steps for region 1 until 2ry2x&gt=2rx2y

Implementation:

## C++

 `// C++ program for implementing ` `// Mid-Point Ellipse Drawing Algorithm ` `#include ` `using` `namespace` `std; ` ` `  `void` `midptellipse(``int` `rx, ``int` `ry,  ` `                  ``int` `xc, ``int` `yc) ` `{ ` `    ``float` `dx, dy, d1, d2, x, y; ` `    ``x = 0; ` `    ``y = ry; ` ` `  `    ``// Initial decision parameter of region 1 ` `    ``d1 = (ry * ry) - (rx * rx * ry) +  ` `                     ``(0.25 * rx * rx); ` `    ``dx = 2 * ry * ry * x; ` `    ``dy = 2 * rx * rx * y; ` ` `  `    ``// For region 1 ` `    ``while` `(dx < dy)  ` `    ``{ ` ` `  `        ``// Print points based on 4-way symmetry ` `        ``cout << x + xc << ``" , "` `<< y + yc << endl; ` `        ``cout << -x + xc << ``" , "` `<< y + yc << endl; ` `        ``cout << x + xc << ``" , "` `<< -y + yc << endl; ` `        ``cout << -x + xc << ``" , "` `<< -y + yc << endl; ` ` `  `        ``// Checking and updating value of ` `        ``// decision parameter based on algorithm ` `        ``if` `(d1 < 0) ` `        ``{ ` `            ``x++; ` `            ``dx = dx + (2 * ry * ry); ` `            ``d1 = d1 + dx + (ry * ry); ` `        ``} ` `        ``else`  `        ``{ ` `            ``x++; ` `            ``y--; ` `            ``dx = dx + (2 * ry * ry); ` `            ``dy = dy - (2 * rx * rx); ` `            ``d1 = d1 + dx - dy + (ry * ry); ` `        ``} ` `    ``} ` ` `  `    ``// Decision parameter of region 2 ` `    ``d2 = ((ry * ry) * ((x + 0.5) * (x + 0.5))) +  ` `         ``((rx * rx) * ((y - 1) * (y - 1))) - ` `          ``(rx * rx * ry * ry); ` ` `  `    ``// Plotting points of region 2 ` `    ``while` `(y >= 0) ` `    ``{ ` ` `  `        ``// Print points based on 4-way symmetry ` `        ``cout << x + xc << ``" , "` `<< y + yc << endl; ` `        ``cout << -x + xc << ``" , "` `<< y + yc << endl; ` `        ``cout << x + xc << ``" , "` `<< -y + yc << endl; ` `        ``cout << -x + xc << ``" , "` `<< -y + yc << endl; ` ` `  `        ``// Checking and updating parameter ` `        ``// value based on algorithm ` `        ``if` `(d2 > 0)  ` `        ``{ ` `            ``y--; ` `            ``dy = dy - (2 * rx * rx); ` `            ``d2 = d2 + (rx * rx) - dy; ` `        ``} ` `        ``else`  `        ``{ ` `            ``y--; ` `            ``x++; ` `            ``dx = dx + (2 * ry * ry); ` `            ``dy = dy - (2 * rx * rx); ` `            ``d2 = d2 + dx - dy + (rx * rx); ` `        ``} ` `    ``} ` `} ` ` `  `// Driver code ` `int` `main() ` `{ ` `    ``// To draw a ellipse of major and ` `    ``// minor radius 15, 10 centred at (50, 50) ` `    ``midptellipse(10, 15, 50, 50); ` ` `  `    ``return` `0; ` `} ` ` `  `// This code is contributed  ` `// by Akanksha Rai `

## C

 `// C program for implementing ` `// Mid-Point Ellipse Drawing Algorithm ` ` `  `#include ` ` `  `void` `midptellipse(``int` `rx, ``int` `ry, ``int` `xc, ``int` `yc) ` `{ ` ` `  `    ``float` `dx, dy, d1, d2, x, y; ` `    ``x = 0; ` `    ``y = ry; ` ` `  `    ``// Initial decision parameter of region 1 ` `    ``d1 = (ry * ry) ` `         ``- (rx * rx * ry) ` `         ``+ (0.25 * rx * rx); ` `    ``dx = 2 * ry * ry * x; ` `    ``dy = 2 * rx * rx * y; ` ` `  `    ``// For region 1 ` `    ``while` `(dx < dy) { ` ` `  `        ``// Print points based on 4-way symmetry ` `        ``printf``(``"(%f, %f)\n"``, x + xc, y + yc); ` `        ``printf``(``"(%f, %f)\n"``, -x + xc, y + yc); ` `        ``printf``(``"(%f, %f)\n"``, x + xc, -y + yc); ` `        ``printf``(``"(%f, %f)\n"``, -x + xc, -y + yc); ` ` `  `        ``// Checking and updating value of ` `        ``// decision parameter based on algorithm ` `        ``if` `(d1 < 0) { ` `            ``x++; ` `            ``dx = dx + (2 * ry * ry); ` `            ``d1 = d1 + dx + (ry * ry); ` `        ``} ` `        ``else` `{ ` `            ``x++; ` `            ``y--; ` `            ``dx = dx + (2 * ry * ry); ` `            ``dy = dy - (2 * rx * rx); ` `            ``d1 = d1 + dx - dy + (ry * ry); ` `        ``} ` `    ``} ` ` `  `    ``// Decision parameter of region 2 ` `    ``d2 = ((ry * ry) * ((x + 0.5) * (x + 0.5))) ` `         ``+ ((rx * rx) * ((y - 1) * (y - 1))) ` `         ``- (rx * rx * ry * ry); ` ` `  `    ``// Plotting points of region 2 ` `    ``while` `(y >= 0) { ` ` `  `        ``// printing points based on 4-way symmetry ` `        ``printf``(``"(%f, %f)\n"``, x + xc, y + yc); ` `        ``printf``(``"(%f, %f)\n"``, -x + xc, y + yc); ` `        ``printf``(``"(%f, %f)\n"``, x + xc, -y + yc); ` `        ``printf``(``"(%f, %f)\n"``, -x + xc, -y + yc); ` ` `  `        ``// Checking and updating parameter ` `        ``// value based on algorithm ` `        ``if` `(d2 > 0) { ` `            ``y--; ` `            ``dy = dy - (2 * rx * rx); ` `            ``d2 = d2 + (rx * rx) - dy; ` `        ``} ` `        ``else` `{ ` `            ``y--; ` `            ``x++; ` `            ``dx = dx + (2 * ry * ry); ` `            ``dy = dy - (2 * rx * rx); ` `            ``d2 = d2 + dx - dy + (rx * rx); ` `        ``} ` `    ``} ` `} ` ` `  `// Driver code ` `int` `main() ` `{ ` `    ``// To draw a ellipse of major and ` `    ``// minor radius 15, 10  centred at (50, 50) ` `    ``midptellipse(10, 15, 50, 50); ` ` `  `    ``return` `0; ` `} `

## Java

 `// Java program for implementing ` `// Mid-Point Ellipse Drawing Algorithm ` `import` `java.util.*; ` `import` `java.text.DecimalFormat; ` ` `  `class` `GFG ` `{ ` ` `  `static` `void` `midptellipse(``float` `rx, ``float` `ry,  ` `                        ``float` `xc, ``float` `yc) ` `{ ` ` `  `    ``float` `dx, dy, d1, d2, x, y; ` `    ``x = ``0``; ` `    ``y = ry; ` ` `  `    ``// Initial decision parameter of region 1 ` `    ``d1 = (ry * ry) - (rx * rx * ry) + ` `                    ``(``0``.25f * rx * rx); ` `    ``dx = ``2` `* ry * ry * x; ` `    ``dy = ``2` `* rx * rx * y; ` `    ``DecimalFormat df = ``new` `DecimalFormat(``"#,###,##0.00000"``); ` `     `  `    ``// For region 1 ` `    ``while` `(dx < dy) ` `    ``{ ` `     `  `        ``// Print points based on 4-way symmetry ` `        ``System.out.println(df.format((x + xc)) +  ` `                            ``", "``+df.format((y + yc))); ` `        ``System.out.println(df.format((-x + xc)) + ` `                            ``", "``+ df.format((y + yc))); ` `        ``System.out.println(df.format((x + xc)) +  ` `                            ``", "``+ df.format((-y + yc))); ` `        ``System.out.println(df.format((-x + xc)) + ` `                            ``", "``+df.format((-y + yc))); ` ` `  `        ``// Checking and updating value of ` `        ``// decision parameter based on algorithm ` `        ``if` `(d1 < ``0``)  ` `        ``{ ` `            ``x++; ` `            ``dx = dx + (``2` `* ry * ry); ` `            ``d1 = d1 + dx + (ry * ry); ` `        ``} ` `        ``else` `        ``{ ` `            ``x++; ` `            ``y--; ` `            ``dx = dx + (``2` `* ry * ry); ` `            ``dy = dy - (``2` `* rx * rx); ` `            ``d1 = d1 + dx - dy + (ry * ry); ` `        ``} ` `    ``} ` ` `  `    ``// Decision parameter of region 2 ` `    ``d2 = ((ry * ry) * ((x + ``0``.5f) * (x + ``0``.5f))) ` `        ``+ ((rx * rx) * ((y - ``1``) * (y - ``1``))) ` `        ``- (rx * rx * ry * ry); ` ` `  `    ``// Plotting points of region 2 ` `    ``while` `(y >= ``0``) { ` ` `  `        ``// printing points based on 4-way symmetry ` `        ``System.out.println(df.format((x + xc)) +  ` `                            ``", "` `+ df.format((y + yc))); ` `        ``System.out.println(df.format((-x + xc)) +  ` `                            ``", "``+ df.format((y + yc))); ` `        ``System.out.println(df.format((x + xc)) + ` `                            ``", "` `+ df.format((-y + yc))); ` `        ``System.out.println(df.format((-x + xc)) + ` `                            ``", "` `+ df.format((-y + yc))); ` ` `  `        ``// Checking and updating parameter ` `        ``// value based on algorithm ` `        ``if` `(d2 > ``0``) { ` `            ``y--; ` `            ``dy = dy - (``2` `* rx * rx); ` `            ``d2 = d2 + (rx * rx) - dy; ` `        ``} ` `        ``else` `{ ` `            ``y--; ` `            ``x++; ` `            ``dx = dx + (``2` `* ry * ry); ` `            ``dy = dy - (``2` `* rx * rx); ` `            ``d2 = d2 + dx - dy + (rx * rx); ` `        ``} ` `    ``} ` `} ` ` `  `// Driver code ` `public` `static` `void` `main(String args[]) ` `{ ` `    ``// To draw a ellipse of major and ` `    ``// minor radius 15, 10 centred at (50, 50) ` `    ``midptellipse(``10``, ``15``, ``50``, ``50``); ` `}  ` `} ` ` `  `// This code is contributed by ` `// Surendra_Gangwar `

## Python3

 `# Python3 program for implementing  ` `# Mid-Point Ellipse Drawing Algorithm  ` ` `  `def` `midptellipse(rx, ry, xc, yc):  ` ` `  `    ``x ``=` `0``;  ` `    ``y ``=` `ry;  ` ` `  `    ``# Initial decision parameter of region 1  ` `    ``d1 ``=` `((ry ``*` `ry) ``-` `(rx ``*` `rx ``*` `ry) ``+` `                      ``(``0.25` `*` `rx ``*` `rx));  ` `    ``dx ``=` `2` `*` `ry ``*` `ry ``*` `x;  ` `    ``dy ``=` `2` `*` `rx ``*` `rx ``*` `y;  ` ` `  `    ``# For region 1  ` `    ``while` `(dx < dy):  ` ` `  `        ``# Print points based on 4-way symmetry  ` `        ``print``(``"("``, x ``+` `xc, ``","``, y ``+` `yc, ``")"``);  ` `        ``print``(``"("``,``-``x ``+` `xc,``","``, y ``+` `yc, ``")"``); ` `        ``print``(``"("``,x ``+` `xc,``","``, ``-``y ``+` `yc ,``")"``);  ` `        ``print``(``"("``,``-``x ``+` `xc, ``","``, ``-``y ``+` `yc, ``")"``);  ` ` `  `        ``# Checking and updating value of  ` `        ``# decision parameter based on algorithm  ` `        ``if` `(d1 < ``0``):  ` `            ``x ``+``=` `1``;  ` `            ``dx ``=` `dx ``+` `(``2` `*` `ry ``*` `ry);  ` `            ``d1 ``=` `d1 ``+` `dx ``+` `(ry ``*` `ry);  ` `        ``else``: ` `            ``x ``+``=` `1``;  ` `            ``y ``-``=` `1``;  ` `            ``dx ``=` `dx ``+` `(``2` `*` `ry ``*` `ry);  ` `            ``dy ``=` `dy ``-` `(``2` `*` `rx ``*` `rx);  ` `            ``d1 ``=` `d1 ``+` `dx ``-` `dy ``+` `(ry ``*` `ry);  ` ` `  `    ``# Decision parameter of region 2  ` `    ``d2 ``=` `(((ry ``*` `ry) ``*` `((x ``+` `0.5``) ``*` `(x ``+` `0.5``))) ``+` `          ``((rx ``*` `rx) ``*` `((y ``-` `1``) ``*` `(y ``-` `1``))) ``-`  `           ``(rx ``*` `rx ``*` `ry ``*` `ry));  ` ` `  `    ``# Plotting points of region 2  ` `    ``while` `(y >``=` `0``): ` ` `  `        ``# printing points based on 4-way symmetry  ` `        ``print``(``"("``, x ``+` `xc, ``","``, y ``+` `yc, ``")"``);  ` `        ``print``(``"("``, ``-``x ``+` `xc, ``","``, y ``+` `yc, ``")"``);  ` `        ``print``(``"("``, x ``+` `xc, ``","``, ``-``y ``+` `yc, ``")"``);  ` `        ``print``(``"("``, ``-``x ``+` `xc, ``","``, ``-``y ``+` `yc, ``")"``);  ` ` `  `        ``# Checking and updating parameter  ` `        ``# value based on algorithm  ` `        ``if` `(d2 > ``0``): ` `            ``y ``-``=` `1``;  ` `            ``dy ``=` `dy ``-` `(``2` `*` `rx ``*` `rx);  ` `            ``d2 ``=` `d2 ``+` `(rx ``*` `rx) ``-` `dy;  ` `        ``else``: ` `            ``y ``-``=` `1``;  ` `            ``x ``+``=` `1``;  ` `            ``dx ``=` `dx ``+` `(``2` `*` `ry ``*` `ry);  ` `            ``dy ``=` `dy ``-` `(``2` `*` `rx ``*` `rx);  ` `            ``d2 ``=` `d2 ``+` `dx ``-` `dy ``+` `(rx ``*` `rx);  ` ` `  `# Driver code  ` ` `  `# To draw a ellipse of major and  ` `# minor radius 15, 10 centred at (50, 50)  ` `midptellipse(``10``, ``15``, ``50``, ``50``);  ` ` `  `# This code is contributed by chandan_jnu `

## C#

 `// C# program for implementing ` `// Mid-Point Ellipse Drawing Algorithm ` `using` `System; ` ` `  `class` `GFG ` `{ ` ` `  `static` `void` `midptellipse(``double` `rx, ``double` `ry,  ` `                        ``double` `xc, ``double` `yc) ` `{ ` ` `  `    ``double` `dx, dy, d1, d2, x, y; ` `    ``x = 0; ` `    ``y = ry; ` ` `  `    ``// Initial decision parameter of region 1 ` `    ``d1 = (ry * ry) - (rx * rx * ry) + ` `                    ``(0.25f * rx * rx); ` `    ``dx = 2 * ry * ry * x; ` `    ``dy = 2 * rx * rx * y; ` `     `  `    ``// For region 1 ` `    ``while` `(dx < dy) ` `    ``{ ` `     `  `        ``// Print points based on 4-way symmetry ` `        ``Console.WriteLine(String.Format(``"{0:0.000000}"``, ` `                            ``(x + xc)) + ``", "``+String.Format ` `                            ``(``"{0:0.000000}"``,(y + yc))); ` `        ``Console.WriteLine(String.Format(``"{0:0.000000}"``, ` `                            ``(-x + xc)) + ``", "``+ String.Format ` `                            ``(``"{0:0.000000}"``,(y + yc))); ` `        ``Console.WriteLine(String.Format(``"{0:0.000000}"``, ` `                            ``(x + xc)) + ``", "``+String.Format ` `                            ``(``"{0:0.000000}"``,(-y + yc))); ` `        ``Console.WriteLine(String.Format(``"{0:0.000000}"``, ` `                            ``(-x + xc)) +``", "``+String.Format ` `                            ``(``"{0:0.000000}"``,(-y + yc))); ` ` `  `        ``// Checking and updating value of ` `        ``// decision parameter based on algorithm ` `        ``if` `(d1 < 0)  ` `        ``{ ` `            ``x++; ` `            ``dx = dx + (2 * ry * ry); ` `            ``d1 = d1 + dx + (ry * ry); ` `        ``} ` `        ``else` `        ``{ ` `            ``x++; ` `            ``y--; ` `            ``dx = dx + (2 * ry * ry); ` `            ``dy = dy - (2 * rx * rx); ` `            ``d1 = d1 + dx - dy + (ry * ry); ` `        ``} ` `    ``} ` ` `  `    ``// Decision parameter of region 2 ` `    ``d2 = ((ry * ry) * ((x + 0.5f) * (x + 0.5f))) ` `        ``+ ((rx * rx) * ((y - 1) * (y - 1))) ` `        ``- (rx * rx * ry * ry); ` ` `  `    ``// Plotting points of region 2 ` `    ``while` `(y >= 0) ` `    ``{ ` ` `  `        ``// printing points based on 4-way symmetry ` `        ``Console.WriteLine(String.Format(``"{0:0.000000}"``, ` `                            ``(x + xc)) + ``", "` `+ String.Format ` `                            ``(``"{0:0.000000}"``,(y + yc))); ` `        ``Console.WriteLine(String.Format(``"{0:0.000000}"``, ` `                            ``(-x + xc)) + ``", "``+ String.Format ` `                            ``(``"{0:0.000000}"``,(y + yc))); ` `        ``Console.WriteLine(String.Format(``"{0:0.000000}"``, ` `                            ``(x + xc)) + ``", "` `+ String.Format ` `                            ``(``"{0:0.000000}"``,(-y + yc))); ` `        ``Console.WriteLine(String.Format(``"{0:0.000000}"``, ` `                            ``(-x + xc)) + ``", "` `+ String.Format ` `                            ``(``"{0:0.000000}"``,(-y + yc))); ` ` `  `        ``// Checking and updating parameter ` `        ``// value based on algorithm ` `        ``if` `(d2 > 0) ` `        ``{ ` `            ``y--; ` `            ``dy = dy - (2 * rx * rx); ` `            ``d2 = d2 + (rx * rx) - dy; ` `        ``} ` `        ``else`  `        ``{ ` `            ``y--; ` `            ``x++; ` `            ``dx = dx + (2 * ry * ry); ` `            ``dy = dy - (2 * rx * rx); ` `            ``d2 = d2 + dx - dy + (rx * rx); ` `        ``} ` `    ``} ` `} ` ` `  `// Driver code ` `static` `void` `Main() ` `{ ` ` `  `    ``// To draw a ellipse of major and ` `    ``// minor radius 15, 10 centred at (50, 50) ` `    ``midptellipse(10, 15, 50, 50); ` `}  ` `} ` ` `  `// This code is contributed by mits `

## PHP

 `= 0)  ` `    ``{  ` ` `  `        ``// printing points based on 4-way symmetry  ` `        ``echo` `"( "``,``\$x` `+ ``\$xc``,``", "``, ``\$y` `+ ``\$yc` `,``" )\n"``;  ` `        ``echo` `"( "``,-``\$x` `+ ``\$xc``,``", "``, ``\$y` `+ ``\$yc` `, ``" )\n"``;  ` `        ``echo` `"( "``,``\$x` `+ ``\$xc``,``", "``, -``\$y` `+ ``\$yc``, ``" )\n"``;  ` `        ``echo` `"( "``,-``\$x` `+ ``\$xc``,``", "``, -``\$y` `+ ``\$yc``, ``" )\n"``;  ` ` `  `        ``// Checking and updating parameter  ` `        ``// value based on algorithm  ` `        ``if` `(``\$d2` `> 0)  ` `        ``{  ` `            ``\$y``--;  ` `            ``\$dy` `= ``\$dy` `- (2 * ``\$rx` `* ``\$rx``);  ` `            ``\$d2` `= ``\$d2` `+ (``\$rx` `* ``\$rx``) - ``\$dy``;  ` `        ``}  ` `        ``else`  `        ``{  ` `            ``\$y``--;  ` `            ``\$x``++;  ` `            ``\$dx` `= ``\$dx` `+ (2 * ``\$ry` `* ``\$ry``);  ` `            ``\$dy` `= ``\$dy` `- (2 * ``\$rx` `* ``\$rx``);  ` `            ``\$d2` `= ``\$d2` `+ ``\$dx` `- ``\$dy` `+ (``\$rx` `* ``\$rx``);  ` `        ``}  ` `    ``}  ` `}  ` ` `  `// Driver code  ` ` `  `// To draw a ellipse of major and  ` `// minor radius 15, 10 centred at (50, 50)  ` `midptellipse(10, 15, 50, 50);  ` ` `  `// This code is contributed by Ryuga ` `?> `

Output:

```(50.000000, 65.000000)
(50.000000, 65.000000)
(50.000000, 35.000000)
(50.000000, 35.000000)
(51.000000, 65.000000)
(49.000000, 65.000000)
(51.000000, 35.000000)
(49.000000, 35.000000)
(52.000000, 65.000000)
(48.000000, 65.000000)
(52.000000, 35.000000)
(48.000000, 35.000000)
(53.000000, 64.000000)
(47.000000, 64.000000)
(53.000000, 36.000000)
(47.000000, 36.000000)
(54.000000, 64.000000)
(46.000000, 64.000000)
(54.000000, 36.000000)
(46.000000, 36.000000)
(55.000000, 63.000000)
(45.000000, 63.000000)
(55.000000, 37.000000)
(45.000000, 37.000000)
(56.000000, 62.000000)
(44.000000, 62.000000)
(56.000000, 38.000000)
(44.000000, 38.000000)
(57.000000, 61.000000)
(43.000000, 61.000000)
(57.000000, 39.000000)
(43.000000, 39.000000)
(57.000000, 60.000000)
(43.000000, 60.000000)
(57.000000, 40.000000)
(43.000000, 40.000000)
(58.000000, 59.000000)
(42.000000, 59.000000)
(58.000000, 41.000000)
(42.000000, 41.000000)
(58.000000, 58.000000)
(42.000000, 58.000000)
(58.000000, 42.000000)
(42.000000, 42.000000)
(59.000000, 57.000000)
(41.000000, 57.000000)
(59.000000, 43.000000)
(41.000000, 43.000000)
(59.000000, 56.000000)
(41.000000, 56.000000)
(59.000000, 44.000000)
(41.000000, 44.000000)
(59.000000, 55.000000)
(41.000000, 55.000000)
(59.000000, 45.000000)
(41.000000, 45.000000)
(60.000000, 54.000000)
(40.000000, 54.000000)
(60.000000, 46.000000)
(40.000000, 46.000000)
(60.000000, 53.000000)
(40.000000, 53.000000)
(60.000000, 47.000000)
(40.000000, 47.000000)
(60.000000, 52.000000)
(40.000000, 52.000000)
(60.000000, 48.000000)
(40.000000, 48.000000)
(60.000000, 51.000000)
(40.000000, 51.000000)
(60.000000, 49.000000)
(40.000000, 49.000000)
(60.000000, 50.000000)
(40.000000, 50.000000)
(60.000000, 50.000000)
(40.000000, 50.000000)
```

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