Fiila:Flag of Canada (construction sheet - leaf geometry).svg

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Govvádus
English: Construction sheet for the flag of Canada with an unofficial (but highly accurate) mathematical representation of the maple leaf.


The government of Canada has never provided a mathematical or geometric description of the maple leaf on the Canadian flag.
Two government drawings of the flag exist:

  • An official hand drawn design drawing from 1964 complete with grid overlay. It has a few minor asymmetry errors.
  • A modern looking vector image created with aid of a computer; it is basically a tracing of the 1964 drawing with asymmetry corrections applied.


The diagram on this construction sheet is based on careful measurements taken from an image of the 1964 drawing as it appears in CAN/CGSB-98.1-2003; corrections have been applied to remove asymmetries. The result is very close to the government vector image which can be found in CAN/CGSB-98.1-2018.

The maple leaf can be drawn with 25 line segments and 12 minor arcs. Bézier curves are not required. Each line segment (except for the one on the bottom of the stem) is connected to one end of a minor arc. The line segments are tangent to their connected arcs such that each transition from line segment to arc forms a mathematically smooth path.

The full mathematical representation uses a 1920×960 grid and a standard Cartesian coordinate system. The following are defined:

  • Grid coordinates for all eleven points on the leaf.
  • Grid coordinates for the two points that lay at the bottom of the stem.
  • Angles of 24 line segments expressed in whole degrees and measured CCW from the X-axis.
  • Arc radii for all 12 arcs expressed in grid units.

The following can be derived using trigonometry:

  • Coordinates of the points of tangency (these are the points where the line segments and arcs meet).
  • Coordinates of the arc centrepoints (not required by SVG paths but may be useful for other purposes).
  • Arc central angles (not required by SVG paths but may be useful for other purposes)
For anybody not wishing to do the math themselves, the coordinates for the points of tangency and the centrepoints have been calculated and are displayed in the side panels with rounding to 3 decimal places.
Français : Feuille de construction pour le drapeau du Canada avec une représentation mathématique non officielle (mais très précise) de la feuille d'érable.


Le gouvernement du Canada n'a jamais fourni de description mathématique ou géométrique de la feuille d'érable sur le drapeau canadien.
Deux dessins gouvernementaux du drapeau existent:

  • Un dessin de conception officiel dessiné à la main de 1964 avec superposition de grille. Il a quelques erreurs d'asymétrie mineures.
  • Une image vectorielle d'aspect moderne créée à l'aide d'un ordinateur ; il s'agit essentiellement d'un calque du dessin de 1964 avec des corrections d'asymétrie appliquées.


Le schéma de cette feuille de construction est basé sur des mesures minutieuses prises à partir d'une image du dessin de 1964 tel qu'il apparaît dans la norme CAN/CGSB-98.1-2003; des corrections ont été appliquées pour éliminer les asymétries. Le résultat est très proche de l'image vectorielle du gouvernement qui se trouve dans CAN/CGSB-98.1-2018.
Beaivemearri
Gáldu Eget verk. Very careful measurements taken from an image of the official 1964 drawing of the Canadian flag
Vuoigŋadahkki MapGrid
Andre versjoner
SVG kehittely
InfoField
 
SVG-koden er gyldig.
 
Denne vektorgrafikken ble laget med perl.

Liseansa

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Flag of Canada (construction sheet with full maple leaf geometry)

Elementer som er med i denne fila

motiv girjedárogiella

skaper girjedárogiella

En verdi uten element på Wikidata

forfatternavn girjedárogiella: MapGrid
Wikimedia-brukernavn girjedárogiella: MapGrid
URL: http://commons.wikimedia.org/wiki/User:MapGrid

dato for etablering, fremstilling e.l. girjedárogiella

16 ođđajagimánnu 2019

mediatype girjedárogiella

image/svg+xml

Fiilla historjá

Go deaddilat beaivemeari, oainnat makká fiila lei dalle.

Beaivemearri/ÁigiGovašMihtutGeavaheaddjiKommentára
dáláođđajagimánnu 28 b. 2024 dii. 6.37Govaš ođđajagimánnu 28 b. 2024 dii. 6.37 vurkejuvvon veršuvnnas1 400 × 728 (17 KiB)Iketsiarc C (et arc J – pour la symétrie du code) déplacés de 3 px; espaces (fines) ajoutées devant les deux-points; français plus idiomatique; casse du titre corrigée; 3 <path> simplifiés; coordonnées intactes. C'est tout.
guovvamánnu 5 b. 2022 dii. 1.00Govaš guovvamánnu 5 b. 2022 dii. 1.00 vurkejuvvon veršuvnnas1 400 × 728 (17 KiB)MapGridIncreased drawing resolution by 10. Fixed the "central angle" values listed in the side bars; previous version inadvertently showed supplements of the central angles. There is absolutely no change to the flag geometry.
golggotmánnu 4 b. 2019 dii. 3.28Govaš golggotmánnu 4 b. 2019 dii. 3.28 vurkejuvvon veršuvnnas1 400 × 728 (17 KiB)MapGridReduced file size (only slightly). Changed drawing label. Redid the grid with an SVG pattern; hopefully Media Viewer will render it!
ođđajagimánnu 17 b. 2019 dii. 4.20Govaš ođđajagimánnu 17 b. 2019 dii. 4.20 vurkejuvvon veršuvnnas1 400 × 728 (17 KiB)MapGridUser created page with UploadWizard

Dát fiila ii geavahuvvo ovttage siiddus.

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