p5.js | curve() function

The curve() function is used to draws a curved line between two points given in the middle four parameters on the screen. The first two and last two parameters are used as a control point.

Syntax:

curve( x1, y1, x2, y2, x3, y3, x4, y4 )

or



curve( x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4 )

Parameters:

Value Description
x1 It is used to hold the x-coordinate of beginning control point.
y1 It is used to hold the y-coordinate of beginning control point.
z1 It is used to hold the z-coordinate of beginning control point.
x2 It is used to hold the x-coordinate of first point.
y2 It is used to hold the y-coordinate of first point.
z2 It is used to hold the z-coordinate of first point.
x3 It is used to hold the x-coordinate for second point.
y3 It is used to hold the y-coordinate for second point.
z3 It is used to hold the z-coordinate for second point.
x4 It is used to hold the x-coordinate of ending control point.
y4 It is used to hold the y-coordinate of ending control point.
z4 It is used to hold the z-coordinate of ending control point.

Below examples illustrate the curve() function in CSS:

Example 1:

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function setup() { 
    
    // Create canvas of given size
    createCanvas(500, 300); 
    
    // Set the background of canvas
    background('green'); 
  
function draw() { 
      
    // Use noFill() function to not fill the color
    noFill();
    
    // Set the stroke color
    stroke('white');
    
    // Use curve() function to create curve
    curve(50, 50, 400, 50, 50, 250, 50, 50);
  
    // Set the stroke color
    stroke('blue');
    
    // Use curve() function to create curve
    curve(400, 50, 50, 250, 50, 50, 50, 50); 

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Output:

Example 2:

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function setup() { 
    
    // Create canvas of given size
    createCanvas(500, 300); 
    
    // Set the background of canvas
    background('green'); 
  
function draw() { 
      
    // Use noFill() function to not fill the color
    noFill();
    
    // Set the stroke color
    stroke('white');
    
    // Use curve() function to create curve
    curve(50, 50, 50, 200, 50, 10, 50, 250, 150, 50, 50, 50);
  
    // Set the stroke color
    stroke('blue');
    
    // Use curve() function to create curve
    curve(50, 200, 450, 50, 250, 100, 350, 250, 250, 450, 450, 400); 

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Output:



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