Difference between revisions of "Road Sign Square"
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| Line 1: | Line 1: | ||
<pre id='shellbody' data-qtp='canvas'></pre> | <pre id='shellbody' data-qtp='canvas'></pre> | ||
{{#ev:youtube|7H-BcvEBmZ8}} | |||
== Road Sign Version 1 == | == Road Sign Version 1 == | ||
<div class=qu data-width=150 data-height=150> | <div class=qu data-width=150 data-height=150> | ||
| Line 6: | Line 7: | ||
* The black square is 100, the line width is 16. | * The black square is 100, the line width is 16. | ||
* The yellow is rgb(255,227,0) | * The yellow is rgb(255,227,0) | ||
<pre class=usr> | <pre class=usr> | ||
function drawFlag(ctx){ | function drawFlag(ctx){ | ||
| Line 38: | Line 38: | ||
{{#ev:youtube|p0BeX9rIltA}} | {{#ev:youtube|p0BeX9rIltA}} | ||
== Get it right == | == Get it right == | ||
<div class=qu data-width=160 data-height=160> | <div class=qu data-width=160 data-height=160> | ||
Revision as of 06:28, 20 August 2021
Road Sign Version 1
- The yellow square has side 150, the radius of the corner is 40.
- The black square is 100, the line width is 16.
- The yellow is rgb(255,227,0)
function drawFlag(ctx){
ctx.fillStyle = 'rgb(255,227,0)';
ctx.fillRect(0,0,150,150);
ctx.lineWidth = 16;
ctx.strokeStyle = 'black';
ctx.moveTo( 25, 25);
ctx.lineTo(125, 25);
ctx.lineTo(125,125);
ctx.lineTo( 25,125);
ctx.closePath();
ctx.stroke();
}
function drawFlag(ctx){
ctx.fillStyle = 'rgb(255,227,0)';
ctx.fillRect(0,0,150,150);
ctx.lineWidth = 16;
ctx.strokeStyle = 'black';
ctx.moveTo( 25, 25);
ctx.lineTo(125, 25);
ctx.lineTo(125,125);
ctx.lineTo( 25,125);
ctx.closePath();
ctx.stroke();
}
Get it right
- The drawing surface is 160 by 160
- The yellow square has side 150, the radius of the corner is 20.
- The black square is 100, the line width is 16.
- The yellow is rgb(255,227,0)
function drawFlag(ctx){
ctx.fillStyle = 'rgb(255,227,0)';
ctx.lineWidth = 2;
ctx.strokeStyle = 'black';
ctx.translate(80,80);
ctx.moveTo(-55,-75);
ctx.lineTo(55,-75);
ctx.arc(55,-55, 20, -Math.PI/2, 0);
ctx.rotate(Math.PI/2);
ctx.lineTo(55,-75);
ctx.arc(55,-55, 20, -Math.PI/2, 0);
ctx.rotate(Math.PI/2);
ctx.lineTo(55,-75);
ctx.arc(55,-55, 20, -Math.PI/2, 0);
ctx.rotate(Math.PI/2);
ctx.lineTo(55,-75);
ctx.arc(55,-55, 20, -Math.PI/2, 0);
ctx.rotate(Math.PI/2);
ctx.stroke();
ctx.fill();
ctx.beginPath();
ctx.lineWidth = 16;
ctx.moveTo(50,50);
ctx.lineTo(50,-50);
ctx.lineTo(-50,-50);
ctx.lineTo(-50,50);
ctx.closePath();
ctx.stroke();
}
function drawFlag(ctx){
ctx.translate(80,80);
ctx.fillStyle = 'rgb(255,227,0)';
ctx.strokeStyle = 'black';
ctx.moveTo(55,-75);
ctx.arc(55,-55,20,-Math.PI/2,0 );
ctx.lineTo(75,55);
ctx.rotate(Math.PI/2);
ctx.arc(55,-55,20,-Math.PI/2,0 );
ctx.lineTo(75,55);
ctx.rotate(Math.PI/2);
ctx.arc(55,-55,20,-Math.PI/2,0 );
ctx.lineTo(75,55);
ctx.rotate(Math.PI/2);
ctx.arc(55,-55,20,-Math.PI/2,0 );
ctx.lineTo(75,55);
ctx.rotate(Math.PI/2);
ctx.fill();
ctx.stroke();
ctx.beginPath();
ctx.lineWidth = 16;
ctx.moveTo(50,50);
ctx.lineTo(50,-50);
ctx.lineTo(-50,-50);
ctx.lineTo(-50,50);
ctx.closePath();
ctx.stroke();
}