# Adding rounded corners to shapes (rectangle, triangle, etc.)
**URL:** https://discourse.processing.org/t/adding-rounded-corners-to-shapes-rectangle-triangle-etc/42423
**Category:** Beginners
**Created:** [July 15, 2023, 4:38am UTC](https://discourse.processing.org/t/adding-rounded-corners-to-shapes-rectangle-triangle-etc/42423 "2023-07-15T04:38:06Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Janoer](https://discourse.processing.org/u/Janoer)
#### Post date: [July 15, 2023, 4:38am UTC](https://discourse.processing.org/t/adding-rounded-corners-to-shapes-rectangle-triangle-etc/42423/1 "2023-07-15T04:38:06Z")
hello, is it possible if a shape like a rectangle, triangle etc is curved at each end like this?
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### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [July 15, 2023, 8:25am UTC](https://discourse.processing.org/t/adding-rounded-corners-to-shapes-rectangle-triangle-etc/42423/2 "2023-07-15T08:25:47Z")
Look at the rect command with 5 parameters
See reference
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### Author:  [@jafal](https://discourse.processing.org/u/jafal)
#### Post date: [July 15, 2023, 10:01am UTC](https://discourse.processing.org/t/adding-rounded-corners-to-shapes-rectangle-triangle-etc/42423/3 "2023-07-15T10:01:17Z")
Hi
> **[rect() / Reference](https://processing.org/reference/rect_.html)**
>
> Draws a rectangle to the screen. A rectangle is a four-sided shape with every angle at ninety degrees. By default, the first two parameters set the location of the upper-left corner, the third sets th…
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### Author:  [@glv](https://discourse.processing.org/u/glv)
#### Post date: [July 15, 2023, 12:19pm UTC](https://discourse.processing.org/t/adding-rounded-corners-to-shapes-rectangle-triangle-etc/42423/4 "2023-07-15T12:19:31Z")
Hello @Janoer,
> [@Janoer](#):
>
> hello, is it possible if a shape like a rectangle, triangle etc is curved at each end like this?
I encourage you to explore the resources (references, examples, tutorials) here:
> **[Welcome to Processing!](https://processing.org/)**
>
> Processing is a flexible software sketchbook and a language for learning how to code. Since 2001, Processing has promoted software literacy within the visual arts and visual literacy within technology…
You can also do a search within that site.
The _rect()_ method does this (rounded corners) with additional parameters.
I did not see this option to round corners with other shapes.
I often write custom code to meet my needs if I can’t find a solution
This is an example of adding a rounded corner using _bezier()_ function:
```auto
// Rounding Corner with bezier()
// Author: glv
// Date: 2023-07-15
size(300, 200);
background(0);
strokeWeight(2);
PVector o1, a1, c1, o2, a2, c2;
// First anchor and control point
o1 = new PVector(10, 10); // origin of line
a1 = new PVector(50, 50);
c1 = new PVector(100, 100);
stroke(0, 255, 0); // red
line(o1.x, o1.y, a1.x, a1.y);
stroke(255, 0, 0); // green
line(a1.x, a1.y, c1.x, c1.y);
// Second anchor and control Point
o2 = new PVector(220, 10); // origin of line
a2 = new PVector(180, 50);
c2 = new PVector(130, 100);
stroke(0, 255, 0); // green
line(o2.x, o2.y, a2.x, a2.y);
stroke(255, 0, 0); // red
line(a2.x, a2.y, c2.x, c2.y);
//bezier(x1, y1, x2, y2, x3, y3, x4, y4) // See reference!
//bezier(a1.x, a1.y, c1.x, c1.y, c2.x, c2.y, a2.x, a2.y) // Mapped from reference
noFill();
stroke(255, 255, 0); // yellow
bezier(a1.x, a1.y, c1.x, c1.y, c2.x, c2.y, a2.x, a2.y);
```
I start with an idea such as the above and integrate it into more complex code.
There are certainly many solutions to this for polygons.
`:)`