RustX/Autonomous_Driving_Simulation

1class Road{2    constructor(x,width,laneCount=3){3        this.x=x;4        this.width=width;5        this.laneCount=laneCount;6        this.left=x-width/4;7        this.right=x+width/4;8 9        const infinity=1000000;10        this.top=-infinity;11        this.bottom=infinity;12 13        const topLeft={x:this.left,y:this.top};14        const bottomLeft={x:this.left,y:this.bottom};15        const topRight={x:this.right,y:this.top};16        const bottomRight={x:this.right,y:this.bottom};17        this.borders=[18            [topLeft],19            [topRight]20        ];21        for(let y=-1000;y<=0;y++){22            const x=Math.sin(y*0.01)*50;23            this.borders[0].push({x:x+this.left,y:y});24            this.borders[1].push({x:x+this.right,y:y});25        }26        this.borders[0].push(bottomLeft);27        this.borders[1].push(bottomRight);28    }29 30    getLaneCenter(laneIndex){31        const laneWidth=this.width/this.laneCount;32        return this.left+laneWidth/2+33            Math.min(laneIndex,this.laneCount-1)*laneWidth;34    }35 36    draw(ctx){37        ctx.lineWidth=5;38        ctx.strokeStyle="white";39 40        /*41        ctx.setLineDash([20,20]);42        for(let i=1;i<=this.laneCount-1;i++){43            const x=lerp(44                this.left,45                this.right,46                i/this.laneCount47            );48            ctx.beginPath();49            ctx.moveTo(x,this.top);50            ctx.lineTo(x,this.bottom);51            ctx.stroke();52        }53        */54 55        ctx.setLineDash([20,20]);56        this.borders.forEach(border=>{57            ctx.beginPath();58            ctx.moveTo(border[0].x,border[0].y);59            for(let i=1;i<border.length;i++){60                ctx.lineTo(border[i].x,border[i].y);61            }62            ctx.stroke();63        });64        ctx.setLineDash([]);65    }66}