// Global variables for canvas dimensions

let canvasWidth = 800;

let canvasHeight = 600;

let graph;

let algorithm;

​

function setup() {

    createCanvas(canvasWidth, canvasHeight);

    textSize(16);

    background(245);

​

    // Initialize graph and algorithm

    graph = new Graph(10); // 10 vertices for example

    algorithm = new AStarAlgorithm(graph);

​

    // Initialize buttons and sliders

    initControls();

}

​

function draw() {

    background(245);

    graph.draw();

}

​

function initControls() {

    // Buttons

    let startY = canvasHeight - 40;

    createButton('Start').position(20, startY).mousePressed(() => algorithm.start());

    createButton('Step Forward').position(100, startY).mousePressed(() => algorithm.stepForward());

    createButton('Step Back').position(220, startY).mousePressed(() => algorithm.stepBack());

    createButton('Reset').position(340, startY).mousePressed(() => algorithm.reset());

}

​

class Graph {

    constructor(vertexCount) {

        this.vertexCount = vertexCount;

        this.vertices = [];

        this.edges = [];

        this.createRandomGraph();

    }

​

    createRandomGraph() {

        // Create vertices and random edges

    }

​

    draw() {

        // Draw vertices and edges

    }

}

​

class AStarAlgorithm {

    constructor(graph) {

        this.graph = graph;

        // A* algorithm specific properties

    }

​

    start() {

        // Start the algorithm

    }

​

    stepForward() {

        // Move one step forward in the algorithm

    }

​

    stepBack() {

        // Move one step back in the algorithm

    }

​

    reset() {

        // Reset the algorithm

    }

}

​

// Additional helper functions

​