Question

read this very carefully, i want you to use processing for this , i repeat PROCESSING, if you use anything other than processing, expect a thumb down and incomplete. i posted this wuestion probably 10 times already, if u dont know then dont answer it! simple

4. in interactive sketches it is sometimes useful to calculate the distance between two points (x1, x2) and (y1, y2). Here is some plane geometry to refresh your memory. A(x), ) Ceva? +62 - d = (x3 - x)? +(92 - y.)? Create a function that will take the coordinates of the two points as formal parameters and return the distance between them. The function's signature should be float distance(float xl, float yl, float x2, float y2) Using the distance() function, create a sketch displaying a small square. If the mouse is "too close" to the square, the square jumps away. In this case, "too close" means that the distance between the center of the square and the mouse becomes less than a given number (Hint: use rectMode (CENTER)). Watch for the square to stay within the canvas!

Answer 1

void setup()
{
   size(640, 480);   // size(width, height) : Defines the dimension of the display window width and height in units of pixels
   background(51);   // sets the color used for the background of the Processing window
}

void draw()
{
   float x = 100;   // x-coordinate of top left corner of square
   float y = 100;   // y-coordinate of top left corner of square
   float length = 10;   // length of each side of square
   float threshold = 5;   // threshold distance between the centre of square and the mouse
  
   square(x, y, length);   // draws a square to the screen
  
   float centreX, centreY;
   centreX = x+(length/2);
   centreY = y+(length/2);
  
   if(distance(mouseX, mouseY, centreX, centreY) < threshold)   //condition for mouse being too close to the square
   {
       float dx, dy;
       if(x > width)   dx = -1;   // if sqaure goes out of processing window horizontally
       else dx=1;
       if(y > height)   dy = -1;   //   if sqaure goes out of processing window vertically
       else dy=1;
      
       // Updating coordinates of square each time it jumps away from mouse
       x = x + dx * 20;
       y = y + dy * 20;
      
       background(51);
       square(x, y, length);
   }
}

float distance(float x1, float y1, float x2, float y2)
{
   float tempX = x2 - x1;
   float tempY = y2 - y1;
  
   float X = pow(tempX, 2);   // Sets 'X' to tempX * tempX
float Y = pow(tempY, 2);   // Sets 'Y' to tempY * tempY
  
   float temp = X+Y;
   float dist = sqrt(temp);   // Sets dist to square root of temp
}