Processing Forum

Screen name:
dru8s0

dru8s0's Profile

1 Posts

0 Responses

0 Followers

Activity Trend

Last 30 days

Loading Chart...

Show:

Expanded view
List view

Color grid array problem

[1 Reply]
- 11-Mar-2011 08:40 AM
- Forum: Programming Questions
Hi I'm a beginning processing user and I've been stumped by this problem for a couple of days.

I've been trying to create a grid of squares that the user can select the color of each square within the grid. The problem that I'm having is that as soon as I release my mouse button the color of the square I was trying to change goes back to black.
I know that my problem is being caused by the fact that I'm using c (line 78) as the fill value for all of my squares. I think the solution is to create an array of c values, but arrays are still a bit of a mystery to me and I keep getting errors with the different methods I've tried.
Thank you in advance for your help
MyRect [] []grid;

int k, kc;

int c;

int r = color(255,0,0);

int g =color(0,255,0);

int b =color(0,0,255);

int cols = 17;

int rows = 10;

void setup() {

  size (450,300);

  grid = new MyRect [cols] [rows];

  for (int i =0; i < cols; i++) {

   for ( int j = 0; j< rows; j++) {

   grid[i][j] = new MyRect (i*21+5,j*21+5,20,20,i,j);

   }

  }

}

void draw() {

  background(0);

  smooth();

  fill(r);//(0,0,255);

  rect(365,20,40,40);

  fill(g);//(0,255,0);

  rect(365,70,40,40);

  fill(b);//(255,0,0);

  rect(365,120,40,40);

  for (int i = 0; i < cols; i++) {

   for ( int j = 0; j< rows; j++) {

   grid[i][j].draw();

   if(mousePressed == true) k= get (mouseX,mouseY);

   //kc = k;

   //c=kc;

   if (k == r)kc = k;

   if (k == g)kc = k;

   if (k ==b)kc = k;

   fill(kc);

   rect(365,180,40,90);

   }

  }

}

class MyRect {

  float x, y, wide, high, bi, bj;

  MyRect(float x, float y, float wide, float high, float bi, float bj) {

   this.x = x;

   this.y = y;

   this.wide = wide;

   this.high = high;

   this.bi = bi;// column number

   this.bj = bj;// row number

   stroke(128);

  }// thinking of using bi & bj later as part of the color transfer process

  void draw() {

   if(over()) {

   stroke(255,0,255);

   }

   else {

   stroke(255);

   }

   if((mousePressed == true)&& (over()==true))c=kc;// k is get, kc is if k equals stored

   else if ((mousePressed == true)&& (over()==false)) c = 0;

   fill(c);// I realize that my problem is that I'm using a single variable for my fill colors, I think the

   // solution is probaly to use an arry for the color but I'm still having trouble using arrays

   rect(x, y, wide, high);

  }

  boolean over() {

   if (mouseX >= x && mouseX <= x+wide &&

   mouseY >= y && mouseY <= y+high) {

   return true;

   }

   return false;

  }

}

«Prev
Next »