GripDispatcher

• Example

import compose.grips.*;

GripDispatcher dispatch;
CircleGrip c1, c2, c3;

void setup() {
  dispatch = new GripDispatcher(this);
  c1 = new CircleGrip(25, 50, 40);
  c2 = new CircleGrip(50, 50, 40);
  c3 = new CircleGrip(75, 50, 40);
}

void draw() {
  background(200);
  dispatch.update();
  dispatch.draw();
}

class CircleGrip extends Grip {

  float x, y, diameter;

  CircleGrip(float x, float y, float diameter) {
    this.x = x;
    this.y = y;
    this.diameter = diameter;
  }

  boolean isHovering() {
    return dist(mouseX, mouseY, x, y) < diameter/2;
  }

  void draw() {
    if (this.isTheHover()) { 
      fill(255, 0, 0, 230); // We are the BEST match (top most)
    } else if (this.isHovering()) {
      fill(255, 255, 0, 230); // Our hover conditions are satisfied
    } else {
      fill(255, 230); // We're not hovering
    }
    ellipse(x, y, diameter, diameter);
  }

}

Description

GripDispatcher objects are responsible for collecting, updating and drawing Grip objects. A GripDispatcher must be created before any Grips can be instantiated.

Methods

update()

Calls update on every Grip and selects a new hover.

draw()

Calls the draw method of every Grip.

clear()

Removes every Grip from the GripDispatcher.

getActiveGrip()

Returns the active Grip.

getHoverGrip()

Returns the currently hovering Grip.

Constructors

new GripDispatcher(PApplet)

Related

• Grip

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