I am trying to control a set of gages on my GUI and i need help controlling the needle in the center of it based on the values created in a database in MYSQL. If any one has any advice or can help please contact me.

Thanks...

Sorry im new at this but i kinda figured it out but i have another question regarding how to modify an existing program. The program is Movingoncurves and i am trying to modify it so that it moves according to coordinents from an array instead of using the mouse. I kinda have an idea but maybe some one can suggest something or can help me out. The code is below...

float beginX = 20.0;  // Initial x-coordinate
float beginY = 10.0;  // Initial y-coordinate
float endX = 170.0;   // Final x-coordinate
float endY = 180.0;   // Final y-coordinate
float distX;          // X-axis distance to move
float distY;          // Y-axis distance to move
float exponent = 4;   // Determines the curve
float x = 0.0;        // Current x-coordinate
float y = 0.0;        // Current y-coordinate
float step = 0.01;    // Size of each step along the path
float pct = 0.0;      // Percentage traveled (0.0 to 1.0)

void setup()
{
 size(200, 200);
 noStroke();
 smooth();
 distX = endX - beginX;
 distY = endY - beginY;
}

void draw()
{
 fill(0, 2);
 rect(0, 0, width, height);
 pct += step;
 if (pct < 1.0) {
   x = beginX + (pct * distX);
   y = beginY + (pow(pct, exponent) * distY);
 }
 fill(255);
 ellipse(x, y, 20, 20);
}

void mousePressed() {
 pct = 0.0;
 beginX = x;
 beginY = y;
 endX = mouseX;
 endY = mouseY;
 distX = endX - beginX;
 distY = endY - beginY;
}