package ru.ulstu.method.ftransform;

/**
 * Базисная функция
 */
public class AComponent {
    private double start;  //  левая граница треугольника
    private double end;   // правая граница треугольника
    private double top;  // вершина треугольника

    public double getStart() {
        return start;
    }

    public AComponent() {
    }

    public AComponent(double start, double top, double end) {
        this.start = start;
        this.top = top;
        this.end = end;
    }

    public void setStart(int start) {
        this.start = start;
    }


    public double getEnd() {
        return end;
    }

    public void setEnd(double end) {
        this.end = end;
    }

    public double getTop() {
        return top;
    }

    public int getTopInt() {
        return (int) Math.round(top);
    }

    public void setTop(double top) {
        this.top = top;
    }

    public double getValueAtPoint(int pointIndex) {
        if (pointIndex == this.getTop()) {
            return 1;
        } else if ((pointIndex >= this.getEnd()) || (pointIndex <= this.getStart())) {
            return 0;
        } else if (pointIndex < this.getTop()) {
            return (double) (pointIndex - this.getStart()) / (this.getTop() - this.getStart());
        } else if (pointIndex > this.getTop()) {
            return (double) -(pointIndex - this.getEnd()) / (this.getEnd() - this.getTop());
        }
        return 0;
    }

    @Override
    public String toString() {
        return "start=" + start;
    }
}