Processing Forum

seperating different parts of code

[3 Replies]
- 24-Oct-2012 07:30 PM
- Forum: Programming Questions
hi there, in my code i have ellipses that travel accross the page, then when mouse is clicked rotate around my mouse point. however i also have a image that follows my mouse and i want that to stay still when i click. however i cannot find the right way to format my code so this does that, any ideas??
2. PImage bg;
3. PImage mi;
4. float tx = 0;
5. float ty = 0;
6. static final byte dotCount = 15;
7. static final byte speed = 11;
8. static final byte size = 20;
9. //
10. static float angle = 0;
11. //
12. static final int[] xn = new int [dotCount];
13. static final int[] yn = new int [dotCount];
14. static final byte[] sn = new byte[dotCount];
15. //
16. void setup() {
17. size(1000, 500);
18. frameRate(60);
19. smooth();
20. noStroke();
21. bg = loadImage("space.png");
22. mi = loadImage("mouse.png");
24. background(bg);
25. //
28. //loop that continusly puts random numbers into the 'boxes' in the arays. saves
29. //time then putting them in one at a time.
30. for (byte i=0; i<dotCount; i++) {
31. xn[i] = (int) random (width);
32. yn[i] = (int) random (height);
33. sn[i] = (byte)random (1, speed);
34. }
35. }
37. //
38. void draw() {
39. background (bg);
42. //makes ellipses rotate around mouseX,mouseY
44. if (mousePressed) {
45. translate(mouseX, mouseY);
46. rotate( angle += PI/72 );
47. translate(-mouseX, -mouseY);
48. }
49. //
50. for (byte i=0; i<dotCount; i++) {
51. ellipse (xn[i], yn[i], size, size);
52. xn[i] = ( xn[i] + sn[i] ) % width;
53. }
54. //spaceship that follows mouse
55. tx += (mouseX-tx)/40.0;
56. ty += (mouseY-ty)/40.0;
59. {
60. translate(width/tx, height/ty);
63. angle = atan2(mouseY-width/40, mouseX-height/40);
64. rotate(angle);
65. image(mi, tx-50, ty+50, tx+50, ty+50);
66. }
67. }

expecting EOF found "else"

[3 Replies]
- 24-Oct-2012 12:10 AM
- Forum: Programming Questions
keeps coming up with
expecting EOF found "else"

when i go to play this code? anyone know why?

PImage bg;

PImage mi;

float angle;

float tx = 0;

float ty = 0;

int dotCount = 50;

float[] xn = new float [dotCount];

float[] yn = new float [dotCount];

//changes speed of ellipses

float[] s = new float [dotCount];

void setup(){

size(1000,500);

smooth();

bg = loadImage("space.png");

mi = loadImage("mouse.png");



background(bg);



}

{ int i = 0;

int l = 0;

while (i < dotCount){

xn[i] = random (1000);

yn[i] = random (500);

s[i] = random (10);

i = i + 1; }

}

void draw() {



{

tx += (mouseX-tx)/40.0;

ty += (mouseY-ty)/40.0;}



{ translate(width/tx,height/ty);



angle = atan2(mouseY-width/40,mouseX-height/40);

rotate(angle);

image(mi,tx-50,ty+50, tx+50,ty+50);

}}





{

background (bg);

fill(255,255,255,150);

stroke(255,255,255,120);

strokeWeight(5);}



{if (mousePressed) {

{ int i = 0;

int l = 0;

while (i < dotCount){

xn[l] = (tx+random(60));

yn[l] = (ty+random(150));

s[i] = random (10);

i = i + 1; }

}}

translate(mouseX, mouseY);

rotate(angle);

translate(-mouseX, -mouseY);

angle += PI / 72;

for (int i = 0; i < dotCount; i++) {

ellipse(xn[i], yn[i], 20, 20);

}

}



else {

for (int i = 0; i < dotCount; i++) {

ellipse(xn[i], yn[i], 20, 20);

// makes ellipses move

xn[i] += s[i];

//makes them keep going accross page.

if (xn[i] > 1000) {

xn[i] = 0;

}}

}}

rotating array of ellipses around a point when mouse clicked.

[6 Replies]
- 23-Oct-2012 08:05 PM
- Forum: Programming Questions
hi, i am trying to make my array of ellipses rotate continually when the mouse is clicked but am not sure how to do it, can someone please help!?

//aray multiple variables

int dotCount = 10;

float[] xn = new float [dotCount];

float[] yn = new float [dotCount];

//changes speed of ellipses

float[] s = new float [dotCount];

void setup(){

size(500,500);

smooth();

//loop that continusly puts random numbers into the 'boxes' in the arays. saves

//time then putting them in one at a time.

int i = 0;

while (i < dotCount){

xn[i] = random (500);

yn[i] = random (500);

s[i] = random (5);







i = i + 1; }

}

void draw(){

background (255);



int i = 0;

while (i < dotCount){

ellipse (xn[i], yn[i], 20,20);

// makes ellipses move

xn[i] = xn[i]+s[i];

//makes them keep going accross page.

if (xn[i] > 500){

xn[i] = 0;}



i = i + 1; }

}

need help trying to make my rocket always point towards the mouse

[1 Reply]
- 22-Oct-2012 11:23 PM
- Forum: Programming Questions
hey, im trying to make the rocket always point towards the mouse so it looks like its flying in this direction,
have tried other rotate codes to make this work but i can't !

PImage bg;

PImage mi;

int x = 0;

int a =250;

int b =350;

float tx = 0;

float ty = 0;

int dotCount = 10;

float[] xn = new float [dotCount];

float[] yn = new float [dotCount];

//changes speed of ellipses

float[] s = new float [dotCount];

void setup () {

size (1000, 500);

smooth ();

bg = loadImage("stars.jpg");

mi = loadImage("mouse.png");

background(bg);

}

void draw () {

//int i = 0;

int l = 0;

//while (i < dotCount)

{

/*start points of ellipses

xn[l] = (tx+random(60));

yn[l] = (ty+random(150));

s[i] = random (50);

i = i + 1;

}*/

background(bg); //removes smear left by shapes moving



tx += (mouseX-tx)/30.0;

ty += (mouseY-ty)/30.0;

/* fill (169, 40, 146, 100);

int k = 0;

while (k < dotCount) {

ellipse (xn[k], yn[k], 20, 20);

ellipse (xn[l], yn[l], 20, 20);

k = k + 1;

*/

}

image(mi,tx,ty);







/* triangle (tx, ty, tx+100, ty-75, tx+100, ty+75);

fill (169, 40, 146, 75);

triangle (tx+40, ty, tx+80, ty-30, tx+80, ty+30);*/

//triangle (mouseX+100, mouseY+100, mouseX+100,mouseY+150, mouseX+150, mouseY+50);

/* makes ellipses move

xn[k] = xn[k]+s[k];

xn[l] = xn[l]+s[l];

yn[k] = yn[k]+s[k];

yn[l] = yn[l]+s[l];

//makes them keep going accross page.

/*if (xn[k] > tx) {

xn[k] = 0;

}

k = k + 1;



*/

if (xn[l] > tx) {

xn[l] = 0;

}

l = l + 1;

}

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