这是否有助于给您一些想法:
PImage moog;
void setup() {
String url = "http://bananamondaes.files.wordpress.com/2013/02/the-moog.jpg";
moog = loadImage(url, "jpg");
size(moog.width, moog.height);
noStroke();
strokeWeight(10);
textSize(18);
textAlign(CENTER);
}
void draw() {
image(moog, 0, 0);
color c = moog.pixels[mouseY*width + mouseX];
fill(c);
ellipse(450,285,30,17);
ellipse(430,250,50,30);
ellipse(400,200,70,40);
ellipse(360,120,320,60);
fill(0);
text("Red: "+int(red(c))+", Green: "+int(green(c))+", Blue: "+int(blue(c)),360,125);
text("Check out Moog's ears..", 300, 50);
if(red(c)>200 & green(c)<100 & blue(c)<100) {
noFill();
stroke(c);
rect(5,5,width-10,height-10);
noStroke();
}
}