mirror of
https://github.com/processing/processing4.git
synced 2026-02-02 13:21:07 +01:00
39 lines
717 B
Plaintext
39 lines
717 B
Plaintext
/**
|
|
* Constrain.
|
|
*
|
|
* Move the mouse across the screen to move the circle.
|
|
* The program constrains the circle to its box.
|
|
*/
|
|
|
|
float mx;
|
|
float my;
|
|
float easing = 0.05;
|
|
int radius = 24;
|
|
int edge = 100;
|
|
int inner = edge + radius;
|
|
|
|
void setup() {
|
|
size(640, 360);
|
|
noStroke();
|
|
ellipseMode(RADIUS);
|
|
rectMode(CORNERS);
|
|
}
|
|
|
|
void draw() {
|
|
background(51);
|
|
|
|
if (abs(mouseX - mx) > 0.1) {
|
|
mx = mx + (mouseX - mx) * easing;
|
|
}
|
|
if (abs(mouseY - my) > 0.1) {
|
|
my = my + (mouseY- my) * easing;
|
|
}
|
|
|
|
mx = constrain(mx, inner, width - inner);
|
|
my = constrain(my, inner, height - inner);
|
|
fill(76);
|
|
rect(edge, edge, width-edge, height-edge);
|
|
fill(255);
|
|
ellipse(mx, my, radius, radius);
|
|
}
|