The stroke() function is used to draw the lines and border around the text and shapes. The color object can be set in terms of RGB or HSB depending on the color mode. The color object can also be set as string in terms of RGB, RGBA, Hex CSS color or named color string. Syntax:
stroke( v1, v2, v3, alpha )
or
stroke( value )
or
stroke( gray, alpha )
or
stroke( values )
or
stroke( color )
Parameters:
- v1: It is used to set the red or hue value relative to current color range.
- v2: It is used to set the green or saturation value relative to current color range.
- v3: It is used to set the blue or brightness value relative to current color range.
- alpha: It is used to set the transparency of the drawing.
- value: It is used to set the value of color string.
- gray: It is used to set the gray value.
- values: It is an array containing the red, green, blue and alpha value.
- color: It is used to set the stroke color.
Below examples illustrate the stroke() function in p5.js: Example 1:
javascript
function setup() {
// Create Canvas of given size
createCanvas(400, 200);
} function draw() {
// Set the background color
background(220);
// Set the stroke width
strokeWeight(10);
// Set the stroke
stroke( 'green' );
// Set the filled color
fill( 'white' );
// Draw the circle
circle(90, 90, 34);
// Set the text size
textSize(20);
// Set the text to print
text( "GeeksForGeeks" , 140, 100);
} |
Output:
javascript
function setup() {
// Create Canvas of given size
createCanvas(400, 200);
} function draw() {
// Set the background color
background(220);
// Set the stroke color
stroke( 'orange' );
// Set the stroke width to 10
strokeWeight(30); // Orange
// Draw a line
line(100, 50, 300, 50);
// Set the stroke color
stroke( 'white' );
// Set the stroke width to 8
strokeWeight(30); // White
// Draw a line
line(100, 100, 300, 100);
// Set stroke color
stroke( 'green' );
// Set the stroke width to 6
strokeWeight(30); // Green
// Draw a line
line(100, 150, 300, 150);
} |
Output: