code help for ir sensor - Arduino Forum

I am using a proximity sensor to control a live camera playback in processing.
I want to map a specific range from the sensor to control when the live camera feed is visible and at which transparency.

I want is for the still images to run independently and continusouly, then when the sensor is triggered the live camera feed will overlap the still images at various transparency based on the sensor reading.

Right now the still images run in the background but the live camera feed is always on.. Also the camera feed flickers constantly. I am using a basic logitech webcam. Sometimes it recognizes the range readings and sometimes it doesn't. When I open my serial port with the mapcode active I get range values and random numberics and symbols. when I only have the println active the sensor value reads fine.

here is my arduino code
void setup() {
// initialize serial communication at 9600 bits per second:
Serial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() {
// read the input on analog pin 0:
int sensorValue = analogRead(A0);
// print out the value you read:
Serial.println(sensorValue);
//Serial.println(map(sensorValue, 0, 545, 0, 255));
Serial.write(map(sensorValue, 30, 440, 0, 255));

// send sensor value as number between 0 - 255
//Serial.write(sensorValue/4);
delay(100); // delay in between reads for stability
}

my processing code
int imgCount= 12;
PImage [] imgs = new PImage[imgCount];
float imgW;
float offset = 0;
float easing = 0.05; //using sensor value distance to change its position. this program overlays one image over another by modifying the alpha value of the image with the tint() function.

int currentImage=0;
int lastShown=0;
int interval=3000; // each slide shows for this many millis
int blendedInterval=9000;

int lastRangeReading = 0;
int videoResetInterval=5000; // if we haven't gotten any close range values for a second, reset video transparency

//keep track of loaded images (true or false)
boolean[] loadStates = new boolean [imgCount];

// for loading images
float loaderX, loaderY, theta;

import processing.video.*;
import processing.serial.*;

Capture video;
int count;
int writeRow;
int maxRows;
int topRow;
int buffer[];

boolean showLiveVideo=false;
Serial serialPort;
int rangeVal=440;

PImage videoBuffer;

void setup() {
size (480, 640, P3D);
background(0);
smooth();
imgW= width/imgCount;
// load images asynchronously
for (int i = 0; i < imgCount; i++) {
imgs = requestImage("warhol_img"+nf(i, 4)+".jpg");
}

// Setup VIDEO Capture

String[] cameras = Capture.list();

//video = new Capture(this, 640, 480);
video = new Capture(this, cameras[9]);

video.start();

maxRows = height *2;
buffer = new int[width * maxRows];
writeRow = height - 1;
topRow = 0;

frameRate(80);
background(0);
loadPixels();

// Setup SERIAL PORT
println(Serial.list());

String portName = Serial.list()[0];
serialPort = new Serial(this, portName, 9600);
}

void draw()
{
if (video.available()) {
video.read();
videoBuffer=video;
}
if (videoBuffer !=null) {
image(videoBuffer, 0, 0);
}
// check for new range finder data
while ( serialPort.available () > 0) { // If data is available,
rangeVal = serialPort.read(); // read it and store it in val
lastRangeReading=millis();
//println(rangeVal);
}
if(millis()-lastRangeReading >videoResetInterval) {
lastRangeReading =millis();
rangeVal=255; // make video completely transparent
}

// draw pollock image
background(0);
//tint(255, 255);
//image(img, 0, 0, displayWidth, displayHeight);
for (int i = 0; i < imgs.length; i++) {
// Check if individual images are fully loaded
if ((imgs.width != 0) && (imgs.width != -1)) {
// As images are loaded set true in boolean array
loadStates = true;
}
}
if (checkLoadStates()) {
// all the images are loaded
if (currentImage<imgCount) {
// we are in the first set of single images
drawNextImage();
if (millis()-lastShown>interval) {
currentImage=currentImage+1;
lastShown=millis();
}
}
else {
// we are drawing the blendef image
drawBlendedImages();

if (millis()-lastShown>blendedInterval) {
// if we've shown the blended image for long enough
// reset the whole system
currentImage=0; // start at first image;
lastShown=millis(); // reset the timer
tint(255);
}
}
}
// draw video image
tint(255, rangeVal); // display at half opacity
image(video, 0, 0, 480, 640);
}

void drawNextImage() {
int y = (height - imgs[0].height) / 2;
image(imgs[currentImage], 0, y, imgs[currentImage].height, imgs[currentImage].height);
}

void drawBlendedImages() {
int y = (height - imgs[0].height) / 2;
for (int i = 0; i < imgs.length; i++) {
//image(imgs, width/imgs.length*i, y, imgs.height, imgs.height);
tint(255, 128);
image(imgs, 0, y, imgs.height, imgs.height);
}
}

// Loading animation
void runLoaderAni() {
// Only run when images are loading
if (!checkLoadStates()) {
ellipse(loaderX, loaderY, 10, 10);
loaderX += 2;
loaderY = height/2 + sin(theta) * (height/8);
theta += PI/22;
// Reposition ellipse if it goes off the screen
if (loaderX > width + 5) {
loaderX = -5;
}
}
}

// Return true when all images are loaded - no false values left in array
boolean checkLoadStates() {
for (int i = 0; i < imgs.length; i++) {
if (loadStates == false) {
return false;
}
}
return true;
}

void captureEvent(Capture c) {
c.read();
}

	Author	Topic: code help for ir sensor (Read 142 times)
0 Members and 1 Guest are viewing this topic.