// A Cell object

public class Cell 
{

  // A cell object knows about its location in the grid as well as its size with the variables x, y, w, h.
  float x, y;   // x,y location
  float w, h;   // width and height
  int border;   // stroke used for each cell 255=white to 0=black
  // Colors specifications for the cell
  int colorR, colorG, colorB;
  int colorA;   // Opacity
  // Colors for mouse selection
  int rON, gON, bON, aON;
  
  
  // Cell Constructor
  Cell(float tempX, float tempY, 
       float tempW, float tempH, 
       int tempStroke,
       int tempR, int tempG, int tempB,
       int tempAlpha
       ) 
  {
    // Spatial attributes
    x = tempX;
    y = tempY;
    w = tempW;
    h = tempH;
    // Color attributes
    border     = tempStroke;
    colorR     = tempR;
    colorG     = tempG;
    colorB     = tempB;
    colorA     = tempAlpha;
    rON        = 255;
    gON        = 255;
    bON        = 255;
    aON        = 95;
  }
  
  boolean display(float gridMinX, float gridMinY, float gridMaxX, float gridMaxY) 
  {
    boolean retVal = false;
    stroke(border);
    if(checkover(gridMinX, gridMinY, gridMaxX, gridMaxY))
    {
      //fill(rON, gON, bON, colorA);
      fill(colorR, colorG, colorB, aON);
      retVal = true;
    }
    else
    {
      fill(colorR, colorG, colorB, colorA);
    }
    rect(x,y,w,h);
    return retVal;
  }
  
  void updateColor(int R, int G, int B, int A) 
  {
    colorR = R; 
    colorG = G;
    colorB = B; 
    colorA = A;
  }
  
  // Returns true if mouse is currently over the cell
  boolean checkover(float gridMinX, float gridMinY, float gridMaxX, float gridMaxY)
  { 
    // Mouse is over (current row OR column) AND (within grid limits) 
    if(((mouseX > x && mouseX < x+w) ||
        (mouseY > y && mouseY < y+h)
       ) &&
       ((mouseX > gridMinX && mouseX < gridMaxX) &&
        (mouseY > gridMinY && mouseY < gridMaxY)
       )
      ) 
    {
      return true;
    }
    return false;
  }
  
  // Returns true if mouse is currently over the cell
  boolean isSelected(float gridMinX, float gridMinY, float gridMaxX, float gridMaxY)
  { 
    // Mouse is over (current row AND column)
    if((mouseX > x && mouseX < x+w) &&
       (mouseY > y && mouseY < y+h)
      ) 
    {
      return true;
    }
    return false;
  }
}