Februar 29, 2012

Ein Imageslider der Bewegung gesteuert wird.

import processing.video.*;

// Variable for capture device
Capture video;

// Saved background
PImage backgroundImage, motionImage;
boolean haveBackgroundImage = false;
boolean showMotion = false;

Button buttonLeft, buttonRight;

Slider slider;

// How different must a pixel be to be a foreground pixel
float threshold = 100;

void setup() {
size(640, 480);
video = new Capture(this, 640, 480, 30);
backgroundImage = createImage(video.width, video.height, RGB);

motionImage = createImage(video.width, video.height, RGB);

buttonLeft = new Button(40, height/2-40, 80, false);
buttonRight = new Button(width-120, height/2-40, 80, true);

slider = new Slider(width/2-150,height/2-150,300,300);
int sliderItems = 7;

for(int i = 1; i <= sliderItems;i++) {
slider.addSlide(i+".jpg");
}
slider.setDefault();

smooth();
fill(255);
}

void draw() {
background(0);

// Capture video
if (video.available()) {
video.read();
}

video.loadPixels();
backgroundImage.loadPixels();
motionImage.loadPixels();

// Begin loop to walk through every pixel
for (int x = 0; x  0) {
fill(255, 200);
float s = map(constrain(timer,0,timerTarget), 0, timerTarget,0,w);
ellipse(x+w/2-s/2, y+w/2-s/2, s, s);
}
fill(0, 255);
if (t) {
triangle(x+w*1/3, y+w/4, x+w*1/3, y+w/4*3, x+w*3/4, y+w/2);
}
else {
triangle(x+w*2/3, y+w/4, x+w*2/3, y+w/4*3, x+w*1/4, y+w/2);
}
}
}

class Slide {
PImage img;
int w,h,x,y;
int targetX;
boolean isAnimated = false;

Slide(String fileName, int _w,int _h) {
img = loadImage(fileName);

float wRatio = 1;
float hRatio = 1;
if (img.width > _w || img.height > _h) {
wRatio = _w / float(img.width);
hRatio = _h / float(img.height);
}
float resizeRatio = min(wRatio, hRatio);
h = int(img.height * resizeRatio);
w= int(img.width * resizeRatio);
x = 0;
y = height/2-h/2;
}

void setTarget(int _x) {
targetX = _x;
isAnimated = true;
}

void setPos(int _x) {
x = _x;
}

void setPosnTarget(int _x1, int _x2) {
x = _x1;
targetX = _x2;
isAnimated = true;
}

void display() {
if(isAnimated) {
if(abs(targetX-x) > 10) {
x += (targetX-x)/5;
} else {
isAnimated = false;
}
}
image(img, x, y, w, h);
}
}

class Slider {

int x,y,w,h;

ArrayList slides;
int slideIndex;
int prevSliderIndex;

Slider(int _x, int _y, int _w, int _h) {
x = _x;
y = _y;
w = _w;
h = _h;

slides = new ArrayList();
slideIndex = 0;
}

void addSlide(String filename) {
slides.add(new Slide(filename,w,h));
}

void setDefault() {
slideIndex = 0;
Slide slide = (Slide) slides.get(slideIndex);
slide.setPos(int(x)+w/2-slide.w/2);
}

void nextSlide() {
prevSliderIndex = slideIndex;

slideIndex++;
if(slideIndex == slides.size()) {
slideIndex = 0;
}

Slide slide = (Slide) slides.get(slideIndex);
Slide slidePrev = (Slide) slides.get(prevSliderIndex);
slide.setPosnTarget(width+slide.w+50,int(x)+w/2-slide.w/2);
slidePrev.setTarget(0-slidePrev.w-50);
}

void prevSlide() {
prevSliderIndex = slideIndex;

slideIndex--;
if(slideIndex < 0) {
slideIndex = slides.size() - 1;
}

Slide slide = (Slide) slides.get(slideIndex);
Slide slidePrev = (Slide) slides.get(prevSliderIndex);
slidePrev.setTarget(width+slide.w+50);
slide.setPosnTarget(0-slidePrev.w-50,int(x)+w/2-slide.w/2);
}

void display() {
Slide slide = (Slide) slides.get(slideIndex);
Slide slidePrev = (Slide) slides.get(prevSliderIndex);
slide.display();
slidePrev.display();
}

}