class Graph {
  // properties
  String term;
  int[]termArrCount;

  int[] data;

  float CurveSmoothing;
  float columnWidth;
  float maxColumnHeight;
  float ColumnHeightRatio;
  int i=0;

  float x;
  float y;
  float[] tempX;
  float[] tempY;
  float boxWidth;
  float boxHeight;

  color LineColour;

  // constructors

  Graph(String term){
    this.term = term;
  }

  // methods

  void addData(int[]termArrCount){
    this.termArrCount = termArrCount;
  }

  void display(int x1, int y1, int wid, int heigh, color f, int gCurve) { 
    x = x1;
    y = y1;
    boxWidth = wid;
    boxHeight = heigh;
    data = termArrCount;
    LineColour = f;
    CurveSmoothing = gCurve;

    columnWidth = boxWidth / (data.length-1);
    columnWidth = int(columnWidth);
    maxColumnHeight = max(data); 

    ColumnHeightRatio = boxHeight / maxColumnHeight;

    tempX = new float[data.length];
    tempY = new float[data.length];

    update();
  }

  void update(){
    beginShape();
    vertex(x,y+boxHeight+7);
    vertex(x,y+boxHeight);
    fill(LineColour);
    stroke(LineColour);

    for(int j=0; j < data.length; j++) {
      tempX[j] = x + j*columnWidth;
      tempY[j] = y + boxHeight - data[j]*ColumnHeightRatio;
    }
    //animate the drawing of the graph
    //iterate over the size of i until we reach the size of the data
    if(i < data.length) {
      //incrementally increase the number of curvevertices each time around
      for(int k=0; k < i; k++) {
        curveVertex(tempX[k], tempY[k]);
      }
      i++;
    } 
    else {
      for(int k=0; k < data.length; k++) {  
        curveVertex(tempX[k], tempY[k]);
      }  
    }
//  vertex(tempX[data.length-1],tempY[data.length-1]);
    vertex(x+boxWidth, y+boxHeight);
    vertex(x+boxWidth, y+boxHeight+7);
    endShape();
    
/*
    //  This adds numbers next to the points
    stroke(255, 60);
    fill(color(r,g,b,a));
    int heightAboveGraph = 12;
    for (int l = 0; l < i; l++) { 
      
      if ((l > 0) && (l<i-1)){  // This removes the first and last numbers from the graph << Hack but needed
      
      if(data[l] != 0){ // Only add number when we have data
        textFont(font,9); 
        // this draws the frequency number
        text(data[l],tempX[l]-3,tempY[l]-heightAboveGraph);     
      }
      }
      //this adds a divider bar at every data point
      line(tempX[l], height-boxHeight, tempX[l], height); 
    }
*/
  }
}