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Update to Processing 3 and improve overall stability
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In addition to the minor changes necessary to update to Processing 3,
this also adds an interface element to show status, and makes the camera
loading much more robust. It also loads the camera in a separate thread
so that the UI pops up *much* faster with a message telling you what it
is doing.
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@chennes
chennes committed Jan 25, 2017
1 parent d9209f9 commit a99323a
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Showing 3 changed files with 142 additions and 45 deletions.
187 changes: 142 additions & 45 deletions Stop_Motion_Animation.pde
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Original file line number Diff line number Diff line change
Expand Up @@ -17,9 +17,9 @@ RUNNING:
6) Click ">>>PLAY>>>" to see the movie.
TIPS:
* Holding down the Control key will cause the last frame taken to be displayed. This can help when
* Holding down the z key will cause the last frame taken to be displayed. This can help when
lining up the next shot.
* Holding down the Shift key will show a transparent overlay of the previous shot, again, for lining
* Holding down the x key will show a transparent overlay of the previous shot, again, for lining
up your next shot.
* You can reload a previous set of frames, which will automatically set your group name, scene
number, and current frame, so you can append to a previous movie.
Expand Down Expand Up @@ -66,7 +66,9 @@ PImage _loadedFrame;
PImage _liveFrame;
boolean _weAreLive = true;
boolean _weAreInReplay = false;
boolean _weAreWaiting = false;
int _currentFrame = 0;
int _waitTime = 0;

// GUI Constants
int BUTTON_WIDTH = 150;
Expand All @@ -89,29 +91,61 @@ Capture cam;
ControlP5 cp5;
Textlabel folderNameLabel;
Textlabel numFramesLabel;
Textlabel infoLabel;
Slider frameSlider;

void settings () {
size (WINDOW_WIDTH, WINDOW_HEIGHT); // MUST be the first line in setup (according to the Processing documentation)
}

void setup () {
setupUserInterface ();
startNewMovie ();
}




void delay(int d)
{
int time = millis();
while(millis() - time <= d); // Just loop until we've let enough time pass
}

void internalPauseCall ()
{
_weAreLive = false;
_weAreInReplay = false;
_weAreWaiting = true;
delay (_waitTime);
_weAreLive = true;
_weAreInReplay = false;
_weAreWaiting = false;
}

void pauseUpdates (int d)
{
_waitTime = d;
thread ("internalPauseCall"); // This doesn't freeze the UI, it just doesn't show the camera output or change the info label text
}

void setupUserInterface () {
size (WINDOW_WIDTH, WINDOW_HEIGHT);
cp5 = new ControlP5 (this);

PFont boldFont;
boldFont = loadFont("MeiryoUI-Bold-12.vlw");

PFont largeFont;
largeFont = loadFont("SegoeUI-Bold-16.vlw");

// GUI
folderNameLabel = cp5.addTextlabel("Image Folder Name")
.setText ("Image Folder Name")
.setPosition (STANDARD_SPACING, STANDARD_SPACING+5)
.setFont (boldFont)
;

cp5.addButton ("Start a new movie")
cp5.addButton ("Save and start a new movie")
.setPosition (2*STANDARD_SPACING+BUTTON_WIDTH, STANDARD_SPACING)
.setSize(BUTTON_WIDTH,BUTTON_HEIGHT)
;
Expand Down Expand Up @@ -155,19 +189,25 @@ void setupUserInterface () {
}, ' ');

cp5.addTextlabel ("Tip2")
.setText ("<CTRL> TO SEE PREVIOUS FRAME")
.setText ("<z> TO SEE PREVIOUS FRAME")
.setPosition (STANDARD_SPACING, 4*STANDARD_SPACING+3*BUTTON_HEIGHT)
;

cp5.addTextlabel ("Tip3")
.setText ("<SHIFT> TO SEE OVERLAY")
.setText ("<x> TO SEE OVERLAY")
.setPosition (STANDARD_SPACING, 4*STANDARD_SPACING+4*BUTTON_HEIGHT)
;

cp5.addButton ("Delete Last Photo")
cp5.addButton ("Delete last photo")
.setPosition (STANDARD_SPACING,7*STANDARD_SPACING+4*BUTTON_HEIGHT)
.setSize(BUTTON_WIDTH,BUTTON_HEIGHT)
;

infoLabel = cp5.addTextlabel ("Info")
.setText ("Starting up...\nplease wait")
.setPosition (STANDARD_SPACING, 20*STANDARD_SPACING+4*BUTTON_HEIGHT)
.setFont (largeFont)
;

cp5.addButton (" >>> Play >>>")
.setPosition (STANDARD_SPACING, WEBCAM_UPPER+WEBCAM_HEIGHT+STANDARD_SPACING)
Expand Down Expand Up @@ -208,14 +248,17 @@ void setupUserInterface () {
}

void setupCamera () {
_weAreLive = false;
_weAreInReplay = false;
_weAreWaiting = true;
if (cam != null) {
cam.stop();
cam = null;
}
String[] cameras = Capture.list();

if (cameras.length == 0) {
println ("There are no cameras connected.");
infoLabel.setValue ("There are no cameras connected.");
} else {
println ("Available cameras:");
for (int i = 0; i < cameras.length; i++) {
Expand All @@ -231,16 +274,48 @@ void setupCamera () {
}
}
if (cameraNumber < 0) {
println ("No camera says it supports 640x480 resolution!");
infoLabel.setValue ("No camera says it supports 640x480 resolution!");
} else {
print ("Selected camera ");
print (cameraNumber);
print (": ");
println (cameras[cameraNumber]);
cam = new Capture (this, cameras[cameraNumber]);
cam.start();

boolean workingCamera = false;
while (!workingCamera && cameraNumber > 0) {
_weAreLive = false;
_weAreInReplay = false;
_weAreWaiting = true;
print ("Selected camera ");
print (cameraNumber);
print (": ");
println (cameras[cameraNumber]);
cam = new Capture (this, cameras[cameraNumber]);
cam.start();

// Test it...
int counter = 1;
while (!cam.available() && counter <= 10) {
print ("Waiting for camera... ");
print (counter);
println (" of 10");
delay (1000);
counter++;
}

if (cam.available()) {
cam.read();
workingCamera = true;
infoLabel.setValue ("");
} else {
println ("Camera is not available, moving onto the next one...");
cameraNumber--;
cam.stop();
cam = null;
}
}
}
}

_weAreLive = true;
_weAreInReplay = false;
_weAreWaiting = false;
}

public void controlEvent(ControlEvent theEvent) {
Expand All @@ -250,16 +325,16 @@ public void controlEvent(ControlEvent theEvent) {
takePhoto();
} else if (eventName == " >>> Play >>>") {
playFrames();
} else if (eventName == "Start a new movie") {
} else if (eventName == "Save and start a new movie") {
startNewMovie();
} else if (eventName == "Delete Last Photo") {
} else if (eventName == "Delete last photo") {
deleteFrame();
} else if (eventName == "Add to previous movie") {
loadPrevious();
} else if (eventName == "Import and clean frames") {
cleanFolder();
} else if (eventName == "Help") {
open (_CWD+"data/help/Help.html");
launch (_CWD+"data/help/Help.html");
}
}
}
Expand Down Expand Up @@ -287,10 +362,26 @@ public void takePhoto ()
parts[2] = createFilename (_groupName, _numberOfFrames);
String filename = join (parts,File.separator);
_loadedFrame.save (filename);
_lastFileName = filename;
print ("Wrote frame to ");
println (filename);
success = true;

// Make sure it worked:
PImage img;
img = loadImage(filename);
if (img == null) {
infoLabel.setValue ("Failed to take photo!\nAre you out of space?");
print ("Failed to create the image file ");
print (filename);
println (" -- Is your drive out of space?");
success = false;
} else {
_lastFileName = filename;
print ("Wrote frame to ");
println (filename);
success = true;
}
if (!success) {
infoLabel.setText("Saving failed!\nCheck available space");
delay (10000);
}
}
}

Expand All @@ -305,7 +396,8 @@ private String createFilename (String group, int frame)
private void startNewMovie ()
{
setupDefaultGroupName();
setupCamera();
infoLabel.setValue ("Waiting for camera...");
thread("setupCamera");
_numberOfFrames = 0;
_weAreLive = true;
_weAreInReplay = false;
Expand All @@ -314,9 +406,7 @@ private void startNewMovie ()
}

private void playFrames ()
{
println ("Playing frames");

{
int fps = 15;
_weAreLive = false;
_weAreInReplay = true;
Expand Down Expand Up @@ -350,6 +440,8 @@ private void loadPrevious ()

void loadPreviousFromFile (File selection)
{
_weAreLive = false;
_weAreInReplay = false;
if (selection != null) {
_numberOfFrames = 0;
String pathToFile = selection.getPath();
Expand All @@ -376,16 +468,26 @@ void loadPreviousFromFile (File selection)
numFramesLabel.setText (nfc(_numberOfFrames));
frameSlider.setRange (1, _numberOfFrames);
frameSlider.setValue (_numberOfFrames);

String[] msgArray = new String[2];
msgArray[0] = "Loaded\nFrame ";
msgArray[1] = nf (_numberOfFrames);
String msg = join (msgArray, "");
infoLabel.setValue (msg);

} else {
failCount++;
}
loadingPhotoNumber++;
}
loadingPhotoNumber--;
print ("Successfully loaded ");
print (loadingPhotoNumber);
print (" photos from files like ");
println (filename);
String[] s = new String[3];
s[0] = "Loaded ";
s[1] = nf(loadingPhotoNumber);
s[2] = " photos";
String joined = join (s,"");
infoLabel.setValue (joined);
pauseUpdates (2000);
}
}

Expand Down Expand Up @@ -443,15 +545,6 @@ void cleanSelectedFolder (File selectedFolder) {
}


void delay(int delay)
{
int time = millis();
while(millis() - time <= delay); // Just loop until we've let enough time pass
}




void draw() {
background (0,0,0);
stroke (255,255,255);
Expand All @@ -462,19 +555,23 @@ void draw() {
if (_weAreLive) {
boolean cameraHasGoodData = (cam != null && cam.available() == true);
if (cameraHasGoodData) {
if (keyPressed && keyCode == CONTROL && _loadedFrame != null) {
if (keyPressed && key == 'z' && _loadedFrame != null) {
infoLabel.setValue ("(Previous frame)");
image (_loadedFrame, WEBCAM_LEFT, WEBCAM_UPPER);
} else {
cam.read();
_liveFrame = cam.get();
image (_liveFrame, WEBCAM_LEFT, WEBCAM_UPPER);
if (keyPressed && keyCode == SHIFT && _loadedFrame != null) {
if (keyPressed && key == 'x' && _loadedFrame != null) {
infoLabel.setValue ("(Overlay view)");
blend (_loadedFrame, 0, 0, WEBCAM_WIDTH, WEBCAM_HEIGHT, WEBCAM_LEFT, WEBCAM_UPPER, WEBCAM_WIDTH, WEBCAM_HEIGHT, LIGHTEST);
} else {
infoLabel.setValue ("(Live view)");
}
}
} else if (_liveFrame != null) {
image (_liveFrame, WEBCAM_LEFT, WEBCAM_UPPER);
if (keyPressed && keyCode == SHIFT && _loadedFrame != null) {
if (keyPressed && key == 'x' && _loadedFrame != null) {
blend (_loadedFrame, 0, 0, WEBCAM_WIDTH, WEBCAM_HEIGHT, WEBCAM_LEFT, WEBCAM_UPPER, WEBCAM_WIDTH, WEBCAM_HEIGHT, LIGHTEST);
}
}
Expand All @@ -493,13 +590,13 @@ void draw() {
frameSlider.setValue (_currentFrame);
frameRate (30);
}
} else if (_weAreWaiting) {
// Do not update the info string here!
} else {
if (_currentFrame <= _numberOfFrames && _loadedFrame != null) {
image (_loadedFrame, WEBCAM_LEFT, WEBCAM_UPPER);
} else {
// Just do nothing, I guess...
}
}
}


}
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