Introduction to curveVertex in Processing

curveVertex is a function in the Processing programming language that is used to draw a curved line between two points. It is similar to the vertex function, but it creates a curved line instead of a straight line.

Syntax

The syntax for using curveVertex is as follows:

curveVertex(x, y);

The x and y parameters specify the coordinates for the next vertex in the curve.

Example

Let's say we want to create a curved line in our sketch. We can use `beginShape()` to start the shape, and then add vertices with the `curveVertex()` function. Here's an example:

```processing
void setup() {
  size(400, 400);
}

void draw() {
  background(255);
  
  // Start the shape
  beginShape();
  
  // Create a curved line with curveVertex
  curveVertex(100, 250);
  curveVertex(150, 150);
  curveVertex(250, 150);
  curveVertex(300, 250);
  
  // End the shape and draw it to the screen
  endShape();
}

This code will draw a curved line between four points, creating a sort of "bump" in the middle.

## Additional Notes

- `curveVertex` can be used in combination with other shape-drawing functions to create more complex shapes.
- The more `curveVertex` points you add, the smoother the curve will be.
- You can also modify the appearance of the curve with stroke and fill functions.