Processing Forum

Scraping images from a webpage

[3 Replies]
- 17-Jun-2012 02:09 PM
- Forum: Programming Questions
I need to scrape images from Google Image search results for a little project I'm doing. How would I go about doing this? I already tried proHTML, but that didn't return any images even though there were some on the webpage. Right now I'm trying XMLElement with this code, but I'm getting nullpointers at image().
1. XMLElement xml;
3. PImage[] imgs = new PImage[1];
5. void setup() {
6. size(200, 200);
8. String[] pageRaw = loadStrings("http://google.com/m/search?site=images");
9. String pageOne = "";
10. for(int i=0; i < pageRaw.length; i++) {
11. pageOne += pageRaw[i];
12. }
13. pageOne = pageOne.replaceAll("&copy","(c)");
14. pageOne = pageOne.replaceAll("&nbsp"," ");
16. saveStrings("pageData.txt",new String[] {pageOne});
18. xml = new XMLElement(this, "../pageData.txt");
20. printRecursive(xml);
22. //imgs[0] = loadImage("http://www.gstatic.com/m/images/google_logo_100.gif");
23. }
25. void draw() {
26. background(255);
27. image(imgs[0],0,0);
28. }
30. XMLElement printRecursive(XMLElement x) {
31. if(x.getChildCount() == 0) {
32. return null;
33. } else {
34. println(x); //debug
35. if((x.getName() == "img") && (x.getString("src","")!= "")) {
36. imgs = (PImage[]) append(imgs,loadImage(x.getString("src")));
37. }
39. for(int i=0; i < x.getChildCount(); i++) {
40. printRecursive(x.getChild(i));
41. }
42. return x;
43. }
44. }

Cannot run program: "mv" FIX!

[1 Reply]
- 05-Feb-2012 12:41 PM
- Forum: Android Processing
I was creating an app for a while, and suddenly, I get this when I tried to build:

createProject renameTo() failed, resorting to mv/move instead.

java.io.IOException: Cannot run program "mv": CreateProcess error=2, The system cannot find the file specified

at java.lang.ProcessBuilder.start(ProcessBuilder.java:460)

at java.lang.Runtime.exec(Runtime.java:593)

at java.lang.Runtime.exec(Runtime.java:466)

at processing.app.exec.ProcessHelper.execute(ProcessHelper.java:65)

at processing.mode.android.AndroidBuild.createExportFolder(AndroidBuild.java:218)

at processing.mode.android.AndroidBuild.exportProject(AndroidBuild.java:258)

at processing.mode.android.AndroidEditor$14.run(AndroidEditor.java:390)

Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified

at java.lang.ProcessImpl.create(Native Method)

at java.lang.ProcessImpl.<init>(ProcessImpl.java:81)

at java.lang.ProcessImpl.start(ProcessImpl.java:30)

at java.lang.ProcessBuilder.start(ProcessBuilder.java:453)

... 6 more

I am exporting the application and getting it onto my Thrive tablet using Dropbox, so that might be part of it. The first time the error came up was when I tried to use millis() in my code, but after I remove it, it still doesn't work, giving the same error. I am using Processing 1.5.1. Again, it was working fine before this error came up.

Please help...

MSAFluid game not drawing when mouse is not pressed

[1 Reply]
- 23-Dec-2011 11:15 AM
- Forum: Contributed Library Questions
I'm working on a little game that uses MSAFluid. Some bug in my code is causing the fluid to not display (but update!) when the mouse is not pressed. I know that the image() method is being reached because my println() statement after it is displaying messages, but the screen appears as a solid black. What am I doing wrong here?
2. //Some lines that I could prove were not causing the bug are left out
5. import msafluid.*;
6. import processing.opengl.*;
7. final float FLUID_WIDTH = 120;
8. float invWidth, invHeight; // inverse of screen dimensions
9. float aspectRatio, aspectRatio2;
10. MSAFluidSolver2D fluidSolver;
11. PImage imgFluid;
13. void setup() {
14. size(960, 640, OPENGL); // use OPENGL rendering for bilinear filtering on texture
15. hint( ENABLE_OPENGL_4X_SMOOTH ); // Turn on 4X antialiasing
17. invWidth = 1.0f/width;
18. invHeight = 1.0f/height;
19. aspectRatio = width * invHeight;
20. aspectRatio2 = aspectRatio * aspectRatio;
22. // create fluid and set options
23. fluidSolver = new MSAFluidSolver2D((int)(FLUID_WIDTH), (int)(FLUID_WIDTH * height/width));
24. fluidSolver.enableRGB(true).setFadeSpeed(0.003).setDeltaT(0.5).setVisc(0.0001);
26. // create image to hold fluid picture
27. imgFluid = createImage(fluidSolver.getWidth(), fluidSolver.getHeight(), RGB);
28. }
30. void draw() {
32. colorMode(HSB,360,100,100);
34. if(mousePressed) {
35. if(mouseButton == LEFT) {
36. addForce(50*invWidth,5*invHeight,0.3,0,color(frameCount%360,100,100)); //just the standard addForce
37. } else { // These two lines both work //modified to take a color
38. addForce(mouseX*invWidth,5*invHeight,-0.3,0,color(frameCount%360,100,100));
39. }
40. }
43. fluidSolver.update();
45. for (int i=0; i<fluidSolver.getNumCells(); i++) {
46. int d = 5;
47. imgFluid.pixels[i] = color(fluidSolver.r[i] * d, fluidSolver.g[i] * d, fluidSolver.b[i] * d);
48. }
50. imgFluid.updatePixels();
51. fastblur(imgFluid.pixels, 3, fluidSolver.getWidth(),fluidSolver.getHeight()); //modified fastblur to take any width/height
52. image(imgFluid, 0, 0, width, height);
53. println(random(20000)); //this is always printing
54. }

Having trouble playing a recorded video stored in an ArrayList

[3 Replies]
- 08-Oct-2011 03:51 PM
- Forum: Contributed Library Questions
I'm trying to use GSVideo to record a video into an ArrayList and delete some of its frames. Recording the video works fine, but when I try to step through the images, the program will only display the last frame.
1. import codeanticode.gsvideo.*;
2. GSCapture cam;
4. ArrayList pictures = new ArrayList();
5. boolean recording = true;
6. int frame = 0;
8. void setup() {
9. size(640, 480);
10. String[] cameras = GSCapture.list();
11. cam = new GSCapture(this, 640, 480, cameras[0]);
12. cam.play();
13. }
15. void draw() {
16. println("Draw: " + frame);
17. if(cam.available() == true) {
18. if(recording) {
19. cam.read();
20. pictures.add(cam);
21. frame++;
22. }
23. }
24. try {
25. background(0);
26. image((PImage) pictures.get(frame-1), 0, 0, width, height);
27. } catch(IndexOutOfBoundsException e) {
28. ; //do nothing
29. }
30. }
32. void keyPressed() {
33. recording = false;
34. if(key == 'q') {
35. frame = max((frame - 1) % pictures.size(),1);
36. } else if(key == 'e') {
37. frame = min((frame + 1) % pictures.size(),pictures.size());
38. } else if(key == 'w') {
39. pictures.remove(frame);
40. frame = frame % pictures.size();
41. }
42. println("KeyPressed: " + frame);
43. }
The controls (if it worked) are:
- Q to step back a frame
- E to step forward a frame
- W to erase the current frame

unexpected token: ( on a line with clearly no parentheses/matched parenthesis

[2 Replies]
- 10-Sep-2011 10:29 AM
- Forum: Programming Questions
Really annoyed about this. At the beginning of the LineMaker class, an error comes up that says "unexpected token: (". Is it my code, or is it Processing?
2. Circle[] circles = new Circle[10];
3. LineMaker ndraw;
5. void setup() {
6. size(500, 500);
7. background(200);
8. ndraw = new LineMaker(color(255,100));
9. for(int i = 0; i < circles.length; i++) {
10. circles[i] = new Circle(random(width), random(height), 50, color(0));
11. circles[i].display();
12. }
13. }
15. void draw() {
16. background(255);
17. for(int i = 0; i < circles.length; i++) {
18. for(int j = 0; j < circles.length; j++) {
19. if(dist(circles[i].x,circles[i].y,circles[j].x,circles[j].y) < 200) {
20. ndraw.connect(circles[i],circles[j]);
21. }
22. }
23. circles[i].x++;
24. circles[i].display();
25. }
26. }
28. class LineMaker() { // <----- error happens on this line
29. color nodeColor;
30. LineMaker(color fill_) {
31. fill = fill_;
32. }
34. void connect(Circle c1, Circle c2;) {
35. stroke(nodeColor);
36. line(c1.x, c1.y, c2.x, c2.y);
37. }
38. }
40. class Circle {
41. int x = width / 2;
42. int y = height / 2;
43. int fill = color(0,0,255,100);
44. float size = 20;
46. Circle(int x_, int y_, int size_, color fill_) {
47. x = x_;
48. y = y_;
49. size = size_;
50. fill = fill_;
51. }
53. Circle(float x_, float y_, float size_, color fill_) {
54. x = (int) x_;
55. y = (int) y_;
56. size = size_;
57. fill = fill_;
58. }
60. void display() {
61. fill(fill);
62. ellipse(x, y, size, size);
63. }
64. }

Activity Trend