Processing Forum

what is a default shader ?

[2 Replies]
- 06-Nov-2012 08:51 AM
- Forum: General Discussion
Hi, I explore the new shader functions, and i got a comment about my first shader :

Your shader cannot be used to render colored geometry, using default shader instead.

so what is a default shader ? Is it a basic skeleton ?

i seek a textbox with autoreturn and autoscroll

[1 Reply]
- 01-Nov-2012 03:34 AM
- Forum: Contributed Library Questions
Hello
I help a friend on a sketch and we try to create a chatbox, with auto line return and auto scroll.

I already success to create one with g4p, but once i changed the fontsize, my sketch stop to react like with the default police of g4p ( i got the same problem with controlp5)

i looked on the interweb, and find swing, but i discover it's recommended to don't use it on processing

So maybe someone here know a library who do what i seek ?

Regards

got an NullPointerException when i try to initiate a double Array in the last Beta

[4 Replies]
- 27-Oct-2012 06:58 AM
- Forum: Core Library Questions
Hi,
I created a sketch without problem on my pc with processing 1.5

since i transferred it on my mac where i use the beta 2b05 i got an error of NullPointerException when i initiate my double array levelAlpha.

I tried to create a double Array in another empty skecth and that worked, so where is my error ?

so my code is :
2. // different variable
3. int largeur=368;
4. int hauteur=490;
5. int larg=20;
6. int haut=10;
7. int largCol=largeur/larg;
8. int hautCol=hauteur/haut;
9. int id1=0;
10. int id2=0;
11. // it's seem impossible to initiate this
12. int[][] levelAlpha=new int[36][49];
14. int d=0;
15. // list of piture
16. String[] liste1= {"face1.jpg", "face2.jpg", "face3.jpg"};
17. String[] liste2= {"face4.jpg", "face5.jpg", "face6.jpg"};
18. //if it's first
19. boolean pile= true;
20. // create the PGraphics for the alpha mask and the syphon output
21. PGraphics masque = createGraphics(largeur, hauteur, P2D);
22. PGraphics sortie = createGraphics(largeur, hauteur , P3D);
23. PImage image1;
24. PImage image2;
27. void setup() {
28. size(360, hauteur);
29. frameRate(30);
32. // initiate the doubleArray
33. for (int i=0;i<largCol-1;i++) {
34. for (int j=1;j<hautCol-1;j++) {
36. levelAlpha[i][j]=0;
37. }
38. }
39. //load the first images
40. image1=loadImage(liste1[id1]);
41. image2=loadImage(liste2[id2]);
42. }
43. void draw() {
44. background(127);
45. // create the alphaMask
46. masque.beginDraw();
47. masque.noStroke();
48. for (int i=0;i<largCol;i++) {
49. for (int j=0;j<hautCol;j++) {
50. if (i<d&&j<d) {
51. if (pile/*&&levelAlpha[i][j]<255*/) {
52. levelAlpha[i][j]+=20;
53. }
54. else if (/*levelAlpha[i][j]>0&&*/!pile) {
56. levelAlpha[i][j]-=20;
57. }
58. }
59. if (levelAlpha[i][j]>255)
60. {
61. levelAlpha[i][j]=255;
62. }
63. if (levelAlpha[i][j]<0) {
65. levelAlpha[i][j]=0;
66. }
68. masque.fill( levelAlpha[i][j]);
70. masque.rect(i*larg, j*haut, larg, haut);
71. }
72. }
73. masque.endDraw();
74. // apply the mask to the first picture
75. image1.mask(masque.pixels);
76. // create the syphon output
77. sortie.beginDraw();
79. sortie.image(image2, 0, 0);
81. sortie.image(image1, 0, 0);
82. sortie.endDraw();
83. image(sortie,0,0);
87. d++;
88. //define if one of the pass is ended and which one must happen then
89. if (levelAlpha[largCol-1][hautCol-1]==255&&pile) {
90. d=0;
91. pile=false;
93. id1++;
94. if (id1>liste1.length-1)id1=0;
95. image2=loadImage(liste1[id1]);
96. }
97. else if (levelAlpha[largCol-1][hautCol-1]==0&&!pile) {
98. d=0;
99. pile=true;
101. id2++;
102. if (id2>liste2.length-1)id2=0;
103. image1=loadImage(liste2[id2]);
104. }
105. }

How to find north with the magnet values

[3 Replies]
- 03-Mar-2011 08:08 AM
- Forum: Android Processing
Hello,
I use ketai, and i'm interest for create a compass.
So i try to use the magnet values but i don't find what is the 3 values given by magnet sensor. So if someone have an explanation for how to find the north, that can help me.
Regards
Gilles

new to processing android

[8 Replies]
- 18-Feb-2011 12:03 AM
- Forum: Android Processing
Hello everyone, i have a android phone since yesterday, and i wished to try the devellopment on android, but i have a problem, The repository have move to r9 and impossible to download the previous version....

So i tried to download the link since canardroid, and copy file form r9 but i got different kind of error , like the fact it could'nt locate the google api 7.

It exist a solution, or i need to wait a version of processing who support r9 ?

Regards Gilles

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