Processing Forum

[controlP5] "Cannot find [...] DropdownList"

[1 Reply]
- 17-Apr-2011 06:07 AM
- Forum: Contributed Library Questions
hi,

I just tried to run the ControlP5dropdownList example, but I get the following error:

Cannot find a class or type "DropdownList"

processing 1.2.1
controlp5 0.5.4 -- although the processing console says 0.3.14?! (how can that be, I just re-installed the library)

OpenGL texture glitch / doom era bug

[0 Replies]
- 16-Apr-2011 09:27 AM
- Forum: Core Library Questions
hi,

I have a texture problem, obviously related to the fact that a quad consists of 2 triangles.

I found a lot of postings saying that this sort of behavior ( see http://processing.org/learning/3d/texture1.html ) only occurs when using P3D -- not with OPENGL.

using OPENGL indeed works for the texture example, but the following code still produces a similar / unexpected behavior:
2. import processing.opengl.*;
4. PImage img;
6. void setup() {
7. size(640, 360, OPENGL);
8. frameRate(30);
9. img = loadImage("data/texture.png");
11. /*hint(DISABLE_OPENGL_2X_SMOOTH);
12. //hint(ENABLE_OPENGL_4X_SMOOTH);
13. hint(ENABLE_DEPTH_TEST);
14. hint(ENABLE_DEPTH_SORT);
15. hint(ENABLE_ACCURATE_TEXTURES);*/
16. noStroke();
17. }
19. void draw() {
20. background(0);
22. pushMatrix();
23. translate(width/2, height/2);
25. beginShape();
26. texture(img);
27. textureMode(NORMALIZED);
28. vertex(0, sin(frameCount/10.0)*20, 0, 0, 0);
29. vertex(100, -sin(frameCount/10.0)*20, 0, 1, 0);
30. vertex(100, 100, 0, 1, 1);
31. vertex(0, 100, 0, 0, 1);
32. endShape(CLOSE);
34. popMatrix();
35. }
is this the way it should look like?

if yes, how would I map a texture onto a trapezoid without that sort of glitch?

thanks a lot in advance!

text + OpenGL + window resize = fucked up text

[12 Replies]
- 14-Apr-2011 09:13 AM
- Forum: Core Library Questions
hi,

I have a problem with text in combination with using opengl and resizing the window.

everything looks like it should until I resize the window -- afterwards all the glyphs are just white rectangles.

I'd like to change that, but don't know how. the code below is the result of copy and pasting stuff from different sources, so maybe there is something I'm not aware of.

thanks a lot in advance!
1. import java.awt.event.*;
2. import controlP5.*;
3. import processing.opengl.*;
4. import javax.media.opengl.*;
6. ControlP5 controlP5;
7. int x0, y0;
9. void setup() {
10. frame.setResizable(true);
11. size(1500, 800, OPENGL);
12. frameRate(30);
14. x0 = width / 2;
15. y0 = height / 2;
17. frame.addComponentListener(new ComponentAdapter() {
18. public void componentResized(ComponentEvent e) {
19. if (e.getSource()==frame) {
20. frame.setSize(frame.getWidth(), frame.getHeight());
21. x0 = frame.getWidth() / 2;
22. y0 = frame.getHeight() / 2;
23. }
24. }
25. }
26. );
28. noSmooth();
29. hint(ENABLE_OPENGL_4X_SMOOTH);
31. controlP5 = new ControlP5(this);
32. controlP5.setAutoDraw(false);
33. controlP5.addButton("button",10,100,80,80,20);
34. }
37. void draw() {
38. //hint(ENABLE_NATIVE_FONTS);
39. //textMode(SCREEN);
40. background(200);
42. hint(ENABLE_DEPTH_TEST);
43. pushMatrix();
45. fill(255);
46. ellipse(x0, y0, 100, 100);
48. popMatrix();
49. hint(DISABLE_DEPTH_TEST);
51. controlP5.draw();
52. }

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