Processing Forum

fading without tint

[2 Replies]
- 05-Jun-2013 10:14 AM
- Forum: Programming Questions
Is there a way to fade in an image without tint?

Reason being is that I'm colouring a shape with tint, which stops it working
2. tint (random(130, 255), random(130, 255), random(130, 255));
3. image(imagesMed[imageMedIndex], imageSY, imageMX, medS, medS);

Highest value from multiple ints

[3 Replies]
- 31-May-2013 03:48 AM
- Forum: Programming Questions
Hi,

I'm trying to compare 3 ints to find which one has the highest amount. Coming from an Arduino background, I coded this:

if(low < med || high){

println("Low is greater than med and high");

}

but I get "The operator || is undefined for the argument types(s) boolean, int"

It seems a pretty logical answer, but I can't seem to find it.

readStringFrom?

[1 Reply]
- 28-May-2013 04:51 AM
- Forum: Core Library Questions
Hi all,

I'm currently sending a string of serial data into processing. I'm using readStringUntil to end the read of the serial buffer. However, I need to read another (different) data string after receiving the first. Is there anything that will 'readStringFrom'?

Thanks

Another lovely twitter4j question (searching)

[2 Replies]
- 17-Sep-2012 07:51 AM
- Forum: Contributed Library Questions
Hi,

I'm trying to search a word on twitter and then pick out keywords within the tweets. For example, searching for 'weather' on Twitter and then adding up how many times people mentioned 'sun', 'rain' etc.

I'm unsure how to scan and add-up the words. Code so far below. Thanks.
2. twitter4j.Twitter twitter;
4. void setup() {
5. twitter = new TwitterFactory().getInstance();
6. try {
7. Query query = new Query("weather");
9. QueryResult result = twitter.search(query);
10. List<Tweet> tweets = result.getTweets();
11. for (Tweet tweet : tweets) {
12. println(tweet.getText());
13. }
14. } catch (TwitterException te) {
15. te.printStackTrace();
16. println("Failed to search tweets: " + te.getMessage());
17. }
18. }
20. void draw() {
21. }

Higher the size() is, the faster the movieMaker export is?

[4 Replies]
- 14-Aug-2012 04:08 AM
- Forum: Contributed Library Questions
Hi all,

I'm basically recording footage while displaying other video. Everything works apart from one thing. The frame-rate of the recorded .mov file is way too fast. The recording time is 6 seconds, however the exported .mov file is 3 secs.

W hat it seems to be is the higher the size() is, the faster it'll play back.

It'll work normally at 200x200 pixels, but the exported video gets faster and faster the higher the resolution is.

Any ideas why?
2. import jmcvideo.*;
4. import processing.video.*;
5. import processing.serial.*;
6. Capture myCapture;
7. Serial arduino;
9. MovieMaker mm;
11. boolean video = false;
13. JMCMovie myMovie;
15. int counter = 1;
16. int vidCounter = 0;
18. void setup() {
19. size(1440, 900, P2D);
20. frameRate(25);
21. // size(320, 240, P2D);
24. mm = new MovieMaker(this, width, height, "drawing" + counter + ".mov",
25. 25, MovieMaker.JPEG, MovieMaker.BEST);
27. myCapture = new Capture(this, width, height, 25);
28. myCapture.settings();
30. myMovie = movieFromDataPath("drawing0.mov");
32. myMovie.loop();
34. arduino = new Serial(this, Serial.list()[0], 9600);
36. background(0);
37. }
39. void draw() {
40. {
41. byte[] inBuffer = new byte[7];
42. while (arduino.available () > 0) {
43. inBuffer = arduino.readBytes();
44. arduino.readBytes(inBuffer);
45. if (inBuffer != null) {
46. String myString = new String(inBuffer);
47. println(myString);
48. delay(200);
49. // if (keyPressed) {
50. // if (key == ' ') {
51. if (myString.equals("A")) {
53. video = true;
54. arduino.clear();
55. }
57. else if (myString.equals("?")) {
59. video = false;
60. delay(200);
62. println("finished :)");
64. mm.finish();
65. background(0);
66. arduino.clear();
68. delay(200);
70. counter++;
72. delay(500);
73. mm = new MovieMaker(this, width, height, "drawing" + counter + ".mov",
74. 25, MovieMaker.JPEG, MovieMaker.BEST);
75. }
76. }
77. }
78. }
81. if (video) {
83. image(myMovie, 0, 0);
85. myCapture.loadPixels();
86. mm.addFrame(myCapture.pixels, myCapture.width, myCapture.height);
87. }
88. }
91. void captureEvent(Capture myCapture) {
92. myCapture.read();
93. }
95. JMCMovie movieFromDataPath(String filename)
96. {
97. return new JMCMovie(this, filename, RGB);
98. }

Initialising a video inside void draw()

[3 Replies]
- 31-Jul-2012 07:24 AM
- Forum: Core Library Questions
I'm looking to play a few videos inside void draw. These videos are going to be created after void setup, so I can't initialise them first. To simplify things, I've taken the basic play movie example and swapped the video initialisation into the void draw. This is pretty much how my sketch works. I get this error message and the video doesn't seem to play.
"java(1109,0xac0b62c0) malloc: *** error for object 0x130d950: double free
*** set a breakpoint in malloc_error_break to debug"

when the simplified code is:
2. import processing.video.*;
3. Movie myMovie;
4. int counter = 0;
6. void setup() {
7. size(350, 260, P2D);
9. }
11. void draw() {
12. myMovie = new Movie(this, "drawing"+counter+".mov");
13. myMovie.play();
14. image(myMovie, 0, 0);
15. }
17. void movieEvent(Movie m) {
18. m.read();
19. }

Keying out background colour

[5 Replies]
- 16-Jul-2012 08:39 AM
- Forum: General Discussion
I know its possible to draw images from a webcam in Processing. However, is it possible it key out a background colour from the webcam feed to reveal a still image?

saveFrame into Sketch

[5 Replies]
- 11-Jul-2012 03:46 AM
- Forum: General Discussion
Is there any code that takes the saveFrame image and re-import the jpg back into the Sketch?

For example, if I save a frame it would preview back after it was taken.

Thanks

Random image from URL

[3 Replies]
- 08-Jun-2012 08:27 AM
- Forum: Contributed Library Questions
Hello.

I'm writing some code to pull images from a url and then randomly display one when mousePressed. So far I've got:
2. PImage fragment;
3. int rand;
5. void setup() {
6. size(800, 600);
7. rand = int(random(0, 9));
8. randomimage("http://samuelcox.net/random/frag_" + nf(rand, 3) + ".jpg");
9. }
12. // RANDOM LOAD FUNCTION
13. void randomimage(String fn) {
14. fragment = loadImage(fn); //LOAD RANDOM IMAGE
15. }
17. void draw()
18. {
19. image(fragment, 0, 0);
20. if (mousePressed) {
21. image(fragment, 0, 0);
22. }
23. }
This loads one image, but when mousePressed doesn't pull another one. I'm guessing thats because the randomimage is in void setup? Any help to do this would be appreciated!

Processing -> Twitter Mentions

[2 Replies]
- 03-Jun-2012 12:45 PM
- Forum: Contributed Library Questions
Hi Guys

I'm trying to get Processing to send a serial command when someone @'s my twitter account. I'm using twitter4J and this is what i've got so far:
2. // This is where you enter your Oauth info
3. static String OAuthConsumerKey = "KEY";
4. static String OAuthConsumerSecret = "CONSUMERS";
6. // This is where you enter your Access Token info
7. static String AccessToken = "TOKEN";
8. static String AccessTokenSecret = "TOKENSECRET";
10. // Just some random variables kicking around
11. String myTimeline;
12. java.util.List statuses = null;
14. Twitter twitter = new TwitterFactory().getInstance();
15. RequestToken requestToken;
16. String[] theSearchTweets = new String[11];
18. int lastTime = 0;
20. void setup() {
22. size(100,100);
23. background(0);
24. connectTwitter();
26. }
28. void draw() {
30. background(204);
32. if( millis() - lastTime >= 30000){
34. getTimeline();
35. lastTime = millis();
36. }
38. }
39. // Initial connection
40. void connectTwitter() {
42. twitter.setOAuthConsumer(OAuthConsumerKey, OAuthConsumerSecret);
43. AccessToken accessToken = loadAccessToken();
44. twitter.setOAuthAccessToken(accessToken);
46. }
48. // Loading up the access token
49. private static AccessToken loadAccessToken(){
50. return new AccessToken(AccessToken, AccessTokenSecret);
51. }
53. // Get mentions
54. void getTimeline() {
56. try {
57. statuses = twitter.getMentions();
58. } catch(TwitterException e) {
59. println("Get timeline: " + e + " Status code: " + e.getStatusCode());
60. }
62. for(int i=0; i<statuses.size(); i++) {
63. Status status = (Status)statuses.get(i);
64. println(status.getUser().getName() + ": " + status.getText());
65. }
66. }
This currently pulls through my @ replays when the script starts up with no serial command (thats coming later). Where I would like help is as follows..
I would like the sketch to count how many NEW tweets have come through since the last time it checked. Any ideas?

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