Learning Processing: A Beginner's Guide to Programming Images ...

}
void setLocation(float tempX, float tempY) {
x = tempX;
y = tempY;
}
void display() {
stroke(0);
fill(col);
ellipse(x,y,r*2,r*2);
}
Algorithms 187
// A function that returns true or false based if the catcher intersects a raindrop
boolean intersect(Drop d) {
float distance = dist(x,y,d.x,d.y); // Calculate distance
if (distance < r + d.r) { // Compare distance to sum of radii
return true;
} else {
return false;
}
}
class Drop {
float x,y; // Variables for location of raindrop
float speed; // Speed of raindrop
color c;
float r; // Radius of raindrop
Drop() {
r = 8; // All raindrops are the same size
x = random(width); // Start with a random x location
y = -r*4; // Start a little above the window
speed = random(1,5); // Pick a random speed
c = color(50,100,150); // Color
}
// Move the raindrop down
void move() {
y + = speed; // Increment by speed
}
// Check if it hits the bottom
boolean reachedBottom() {
if (y > height + r*4) { // If we go a little beyond the bottom
return true;
} else {
return false;
}
}
// Display the raindrop
void display() {
// Display the drop
fill(c);