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Copy pathHandles.pde
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127 lines (107 loc) · 2.24 KB
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/**
* Handles.
*
* Click and drag the white boxes to change their position.
*/
Handle[] handles;
void setup() {
size(640, 360);
int num = height/15;
handles = new Handle[num];
int hsize = 10;
for (int i = 0; i < handles.length; i++) {
handles[i] = new Handle(width/2, 10+i*15, 50-hsize/2, 10, handles);
}
}
void draw() {
background(153);
for (int i = 0; i < handles.length; i++) {
handles[i].update();
handles[i].display();
}
fill(0);
rect(0, 0, width/2, height);
}
void mouseReleased() {
for (int i = 0; i < handles.length; i++) {
handles[i].releaseEvent();
}
}
class Handle {
int x, y;
int boxx, boxy;
int stretch;
int size;
boolean over;
boolean press;
boolean locked = false;
boolean otherslocked = false;
Handle[] others;
Handle(int ix, int iy, int il, int is, Handle[] o) {
x = ix;
y = iy;
stretch = il;
size = is;
boxx = x+stretch - size/2;
boxy = y - size/2;
others = o;
}
void update() {
boxx = x+stretch;
boxy = y - size/2;
for (int i=0; i<others.length; i++) {
if (others[i].locked == true) {
otherslocked = true;
break;
} else {
otherslocked = false;
}
}
if (otherslocked == false) {
overEvent();
pressEvent();
}
if (press) {
stretch = lock(mouseX-width/2-size/2, 0, width/2-size-1);
}
}
void overEvent() {
if (overRect(boxx, boxy, size, size)) {
over = true;
} else {
over = false;
}
}
void pressEvent() {
if (over && mousePressed || locked) {
press = true;
locked = true;
} else {
press = false;
}
}
void releaseEvent() {
locked = false;
}
void display() {
line(x, y, x+stretch, y);
fill(255);
stroke(0);
rect(boxx, boxy, size, size);
if (over || press) {
line(boxx, boxy, boxx+size, boxy+size);
line(boxx, boxy+size, boxx+size, boxy);
}
}
}
boolean overRect(int x, int y, int width, int height) {
if (mouseX >= x && mouseX <= x+width &&
mouseY >= y && mouseY <= y+height) {
return true;
} else {
return false;
}
}
int lock(int val, int minv, int maxv) {
return min(max(val, minv), maxv);
}