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p5.js | rotateZ() function

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  • Last Updated : 28 Sep, 2021
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The rotateZ() function in p5.js is used to rotate the shape or an object around the z-axis.
 

Syntax:  

rotateZ(angle)

Parameters: This function accepts single parameter angle which stores the angle by which rotation is to be done. 
Below programs illustrate the rotateZ() function in p5.js:
Example 1: This example uses rotateZ() function to rotate the an object around the z-axis.  

javascript




function setup() {
 
    // Create Canvas of given size
    createCanvas(580, 550, WEBGL);
}
 
function draw() {
    // Set the background color
    background(220);
     
    // Set stroke weight
    strokeWeight(12);
     
    // Rotation function
    rotate(PI / 7.0);
     
    // Call to rotateZ function
    rotateZ(millis() / 1000);
     
    // Draw Rectangle
    rect(3, 3, 200, 39);
     
    // Draw ellipse
    ellipse(160, 160, 40, 40);
}


Output: 
 

Example 2: This example uses rotateZ() function to rotate the an object around the z-axis.  

javascript




function setup() {
     
    // Create canvas of given size
    createCanvas(500, 500, WEBGL);
}
  
function draw() {
     
    // Set background color
    background(200);
   
    // Set property to rotate the
    // shape about the z-axis
    rotateZ(frameCount * 0.01);
     
    // Set stroke weight
    strokeWeight(2);
     
    // Set fill color
    fill("green");
     
    // Draw of height 100 and radius 50
    cylinder(50, 100);
}


Output: 
 

Reference: https://p5js.org/reference/#/p5/rotateZ 


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