closePath method
The closePath method automatically
closes a shape drawn with the
lineTo
method, drawing a straight line from the
end point to initial. If the shape has
already been closed or is just a point,
then the method does nothing.
Syntax
context.closePath();
Example
First, we draw two lines without
closing them with closePath:
<canvas id="canvas" width="200" height="200" style="background: #f4f4f4;"></canvas>
let canvas = document.querySelector('#canvas');
let ctx = canvas.getContext('2d');
ctx.beginPath();
ctx.moveTo(50, 50);
ctx.lineTo(100, 100);
ctx.lineTo(150, 50);
ctx.stroke();
:
Example
And now let's close these two lines
into a shape through closePath,
thereby obtaining a triangle:
<canvas id="canvas" width="200" height="200" style="background: #f4f4f4;"></canvas>
let canvas = document.querySelector('#canvas');
let ctx = canvas.getContext('2d');
ctx.beginPath();
ctx.moveTo(50, 50);
ctx.lineTo(100, 100);
ctx.lineTo(150, 50);
ctx.closePath(); // closes the lines into a shape
ctx.stroke();
:
Example
Let's draw a square, instead of the
last line, closing the shape via
closePath:
<canvas id="canvas" width="200" height="200" style="background: #f4f4f4;"></canvas>
let canvas = document.querySelector('#canvas');
let ctx = canvas.getContext('2d');
ctx.beginPath();
ctx.moveTo(50, 50);
ctx.lineTo(150, 50);
ctx.lineTo(150, 150);
ctx.lineTo(50, 150);
ctx.closePath(); // closes the lines into a shape
ctx.stroke();
:
See also
-
the
fillmethod
that paints a shape with a given color
