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Original file (SVG file, nominally 150 × 150 pixels, file size: 16 KB)
 | This is a file from the
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Summary
| Description |
English: As the denominator 9 goes from 9 to 81 to 729, etc., the resulting blue line becomes the Peano curve. |
| Date | |
| Source | Own work |
| Author | Ovinus |
Pascal src code
uses GraphABC;
const
Step = 10;
var
angle: integer := 1;
procedure Draw();
begin
angle := angle mod 4;
case angle of
0: LineRel(Step, 0);
1,-3: LineRel(0, Step);
2,-2: LineRel(-Step, 0);
3,-1: LineRel(0, -Step);
end;
end;
procedure Fractal(depth: integer; dividedAngle: integer);
begin
if (depth <= 0) then exit;
Dec(depth);
Fractal(depth, dividedAngle);
Draw();
Fractal(depth, -dividedAngle);
Draw();
Fractal(depth, dividedAngle);
angle += dividedAngle;
Draw();
angle += dividedAngle;
Fractal(depth, -dividedAngle);
Draw();
Fractal(depth, dividedAngle);
Draw();
Fractal(depth, -dividedAngle);
angle -= dividedAngle;
Draw();
angle -= dividedAngle;
Fractal(depth, dividedAngle);
Draw();
Fractal(depth, -dividedAngle);
Draw();
Fractal(depth, dividedAngle);
end;
begin
SetWindowSize(500, 500);
MoveTo(5, 5);
Fractal(3, -1);
end.
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
|
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the
public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
|
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:45, 7 June 2022 |
| 150 × 150 (16 KB) | Ovinus | Uploaded own work with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Metadata
Size of this PNG preview of this SVG file:
150 × 150 pixels. Other resolutions:
240 × 240 pixels |
480 × 480 pixels |
768 × 768 pixels |
1,024 × 1,024 pixels |
2,048 × 2,048 pixels.
Original file (SVG file, nominally 150 × 150 pixels, file size: 16 KB)
| This is a file from the
Wikimedia Commons. Information from its
description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: As the denominator 9 goes from 9 to 81 to 729, etc., the resulting blue line becomes the Peano curve. |
| Date | |
| Source | Own work |
| Author | Ovinus |
Pascal src code
uses GraphABC;
const
Step = 10;
var
angle: integer := 1;
procedure Draw();
begin
angle := angle mod 4;
case angle of
0: LineRel(Step, 0);
1,-3: LineRel(0, Step);
2,-2: LineRel(-Step, 0);
3,-1: LineRel(0, -Step);
end;
end;
procedure Fractal(depth: integer; dividedAngle: integer);
begin
if (depth <= 0) then exit;
Dec(depth);
Fractal(depth, dividedAngle);
Draw();
Fractal(depth, -dividedAngle);
Draw();
Fractal(depth, dividedAngle);
angle += dividedAngle;
Draw();
angle += dividedAngle;
Fractal(depth, -dividedAngle);
Draw();
Fractal(depth, dividedAngle);
Draw();
Fractal(depth, -dividedAngle);
angle -= dividedAngle;
Draw();
angle -= dividedAngle;
Fractal(depth, dividedAngle);
Draw();
Fractal(depth, -dividedAngle);
Draw();
Fractal(depth, dividedAngle);
end;
begin
SetWindowSize(500, 500);
MoveTo(5, 5);
Fractal(3, -1);
end.
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
|
|
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the
public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
|
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:45, 7 June 2022 |
| 150 × 150 (16 KB) | Ovinus | Uploaded own work with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):