Difference between revisions of "Flags with Methods"

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   nordic(10,70,'white','blue');
   nordic(10,70,'white','blue');
   nordic(95,70,'yellow','blue');
   nordic(95,70,'yellow','blue');
}
</pre>
</div>
== Horizontal stripes ==
<div class=qu data-width=180 data-height=130>
Several countries have flags that contain three colors in vertical stripes.
[[Image:flagnordic.png|left|frame|Nordic]]
The Nordic Cross features in flags of Scandinavia
Draw the flags of: Sweden, Denmark, Finland, Östergötland
* The small flags are 75 by 50.
* The squares on the left are 20 by 20.
* The line width is 10.
<pre class=usr>
function drawFlag(ctx){
}
</pre>
<pre class=ans>
function drawFlag(ctx){
  let w = 75;
  let h = 50;
  function stripes(x,y,cl){
    ctx.translate(x,y);
    ctx.fillStyle = b;
    ctx.fillRect(0,0,75,50);
    ctx.fillStyle = f;
    ctx.fillRect(20,0,10,50);
    ctx.fillRect(0,20,75,10);
    ctx.translate(-x,-y);
  }
}
}
</pre>
</pre>
</div>
</div>

Revision as of 12:53, 17 August 2021


Three colours

Several countries have flags that contain three colors in vertical stripes.

Three colour flags

Draw the flags of:

  • France
  • Romania
  • Belgium
  • Nigeria
  • Sizes are:
    • The small flags are 75 by 50
    • The margins are 10
function drawFlag(ctx){
}
function drawFlag(ctx){
  function tri(x,y,cl){
    ctx.translate(x,y);
    cl.forEach((c,i)=>{
      ctx.fillStyle = c;
      ctx.fillRect(i*75/cl.length,0,75/cl.length,50);
    });
    ctx.translate(-x,-y);
  }
  ctx.fillStyle = 'gray';
  tri(10,10,['red','white','blue']);
  tri(95,10,['red','yellow','blue']);
  tri(10,70,['black','yellow','red']);
  tri(95,70,['green','white','green']);
}

Nordic cross

Several countries have flags that contain three colors in vertical stripes.

Nordic

The Nordic Cross features in flags of Scandinavia

Draw the flags of: Sweden, Denmark, Finland, Östergötland

  • The small flags are 75 by 50.
  • The squares on the left are 20 by 20.
  • The line width is 10.
function drawFlag(ctx){
}
function drawFlag(ctx){
  function nordic(x,y,b,f){
    ctx.translate(x,y);
    ctx.fillStyle = b;
    ctx.fillRect(0,0,75,50);
    ctx.fillStyle = f;
    ctx.fillRect(20,0,10,50);
    ctx.fillRect(0,20,75,10);
    ctx.translate(-x,-y);
  }
  nordic(10,10,'blue','yellow');
  nordic(95,10,'red','white');
  nordic(10,70,'white','blue');
  nordic(95,70,'yellow','blue');
}

Horizontal stripes

Several countries have flags that contain three colors in vertical stripes.

Nordic

The Nordic Cross features in flags of Scandinavia

Draw the flags of: Sweden, Denmark, Finland, Östergötland

  • The small flags are 75 by 50.
  • The squares on the left are 20 by 20.
  • The line width is 10.
function drawFlag(ctx){
}
function drawFlag(ctx){
  let w = 75;
  let h = 50;
  function stripes(x,y,cl){
    ctx.translate(x,y);
    ctx.fillStyle = b;
    ctx.fillRect(0,0,75,50);
    ctx.fillStyle = f;
    ctx.fillRect(20,0,10,50);
    ctx.fillRect(0,20,75,10);
    ctx.translate(-x,-y);
  }
}