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trouble with class

[8 Replies]
- 23-Mar-2012 06:36 PM
- Forum: General Discussion
Hi, I would greatly appreciate any help anyone can offer.

Here is my code so far.
2. // This is a list of my circles / nodes from the class Node
3. ArrayList nodes;
5. void setup() {
6. // runs only once
7. size(1000, 1000);
8. // Create an empty ArrayList
9. nodes = new ArrayList();
11. // set radius of the main circle
12. int radius = 400;
13. int p = 380;
14. // init nodes here in a for loop
15. for (int deg = 0; deg < 360; deg += 36) {
16. float angle = radians (deg);
17. // x and y = Position of small cirlces on the big circle
18. float x = 100 + (cos(angle) * radius);
19. float y = 100 + (sin(angle) * radius);
20. // A new node object (small circle) is added to the ArrayList (by default to the end)
21. nodes.add(new Node(x, y));
22. } // for
23. for (int deg = 0; deg < 360; deg += 10) {
24. float angle = radians (deg);
25. // x and y = Position of small cirlces on the big circle
26. float x = (100 + (cos(angle) * p));
27. float y = (100 + (sin(angle) * p));
28. // A new node object (small circle) is added to the ArrayList (by default to the end)
29. nodes.add(new Node(x, y));
30. } // for
31. // message to show how many elements we have in the list (e.g. 10)
32. println (nodes.size());
33. // get one element and display its coordinates
34. Node node = (Node) nodes.get(1);
35. println (node.xpos + 400);
36. println (node.ypos + 400);
38. //
39. } // func
40. void draw() {
41. // runs in a loop again and again
42. background(255);
43. // set up the variable node from Class Node
44. Node node;
45. // display nodes here etc.
46. for (int i = nodes.size()-1; i >= 0; i--) {
47. // get the node named "node" at position i in the list
48. node = (Node) nodes.get(i);
49. // display this individual node
50. node.display();
51. } // for
54. if (mouseX > 890 && mouseX < 910 && mouseY > 490 && mouseY < 510) {
55. String[] lines = loadStrings("node_connect.txt");
57. for ( int i = 0; i< lines.length; i++) {
58. String[] pieces = split(lines[i], '\t');
59. if (pieces.length ==8) { //number of items in each row of .txt file
60. int a = int(pieces[0]);
61. int b = int(pieces[1]);
62. int c = int(pieces[2]);
63. int d = int(pieces[3]);
64. int e = int(pieces[4]);
65. int f = int(pieces[5]);
66. int g = int(pieces[6]);
67. int h = int(pieces[7]);
68. smooth();
69. stroke(255, 0, 0);
70. strokeWeight(.25);
71. noFill();
72. bezier (a, b, c, d, e, f, g, h);
73. //end of code for drawing bezier splines between nodes
75. }//for
76. }
78. } else if (mouseX > 814 && mouseX < 834 && mouseY > 725 && mouseY < 745) {
79. String[] lines = loadStrings("node_connect_2.txt");
81. for ( int i = 0; i< lines.length; i++) {
82. String[] pieces = split(lines[i], '\t');
83. if (pieces.length ==8) { //number of items in each row of .txt file
84. int a = int(pieces[0]);
85. int b = int(pieces[1]);
86. int c = int(pieces[2]);
87. int d = int(pieces[3]);
88. int e = int(pieces[4]);
89. int f = int(pieces[5]);
90. int g = int(pieces[6]);
91. int h = int(pieces[7]);
92. smooth();
93. stroke(255, 0, 0);
94. strokeWeight(.25);
95. noFill();
96. bezier (a, b, c, d, e, f, g, h);
97. //end of code for drawing bezier splines between nodes
99. }//for
100. }
102. } else if (mouseX > 614 && mouseX < 634 && mouseY > 870 && mouseY < 890) {
103. String[] lines = loadStrings("node_connect_3.txt");
105. for ( int i = 0; i< lines.length; i++) {
106. String[] pieces = split(lines[i], '\t');
107. if (pieces.length ==8) { //number of items in each row of .txt file
108. int a = int(pieces[0]);
109. int b = int(pieces[1]);
110. int c = int(pieces[2]);
111. int d = int(pieces[3]);
112. int e = int(pieces[4]);
113. int f = int(pieces[5]);
114. int g = int(pieces[6]);
115. int h = int(pieces[7]);
116. smooth();
117. stroke(255, 0, 0);
118. strokeWeight(.25);
119. noFill();
120. bezier (a, b, c, d, e, f, g, h);
121. //end of code for drawing bezier splines between nodes
123. }//for
124. }
126. } else if (mouseX > 366 && mouseX < 386 && mouseY > 870 && mouseY < 890) {
127. String[] lines = loadStrings("node_connect_3.txt");
129. for ( int i = 0; i< lines.length; i++) {
130. String[] pieces = split(lines[i], '\t');
131. if (pieces.length ==8) { //number of items in each row of .txt file
132. int a = int(pieces[0]);
133. int b = int(pieces[1]);
134. int c = int(pieces[2]);
135. int d = int(pieces[3]);
136. int e = int(pieces[4]);
137. int f = int(pieces[5]);
138. int g = int(pieces[6]);
139. int h = int(pieces[7]);
140. smooth();
141. stroke(255, 0, 0);
142. strokeWeight(.25);
143. noFill();
144. bezier (a, b, c, d, e, f, g, h);
145. //end of code for drawing bezier splines between nodes
147. }//for
148. }
150. } else if (mouseX > 166 && mouseX < 186 && mouseY > 725 && mouseY < 745) {
151. String[] lines = loadStrings("node_connect_3.txt");
153. for ( int i = 0; i< lines.length; i++) {
154. String[] pieces = split(lines[i], '\t');
155. if (pieces.length ==8) { //number of items in each row of .txt file
156. int a = int(pieces[0]);
157. int b = int(pieces[1]);
158. int c = int(pieces[2]);
159. int d = int(pieces[3]);
160. int e = int(pieces[4]);
161. int f = int(pieces[5]);
162. int g = int(pieces[6]);
163. int h = int(pieces[7]);
164. smooth();
165. stroke(255, 0, 0);
166. strokeWeight(.25);
167. noFill();
168. bezier (a, b, c, d, e, f, g, h);
169. //end of code for drawing bezier splines between nodes
171. }//for
172. }
174. } else if (mouseX > 90 && mouseX < 110 && mouseY > 490 && mouseY < 510) {
175. String[] lines = loadStrings("node_connect_3.txt");
177. for ( int i = 0; i< lines.length; i++) {
178. String[] pieces = split(lines[i], '\t');
179. if (pieces.length ==8) { //number of items in each row of .txt file
180. int a = int(pieces[0]);
181. int b = int(pieces[1]);
182. int c = int(pieces[2]);
183. int d = int(pieces[3]);
184. int e = int(pieces[4]);
185. int f = int(pieces[5]);
186. int g = int(pieces[6]);
187. int h = int(pieces[7]);
188. smooth();
189. stroke(255, 0, 0);
190. strokeWeight(.25);
191. noFill();
192. bezier (a, b, c, d, e, f, g, h);
193. //end of code for drawing bezier splines between nodes
195. }//for
196. }
198. } else if (mouseX > 166 && mouseX < 186 && mouseY > 255 && mouseY < 275) {
199. String[] lines = loadStrings("node_connect_3.txt");
201. for ( int i = 0; i< lines.length; i++) {
202. String[] pieces = split(lines[i], '\t');
203. if (pieces.length ==8) { //number of items in each row of .txt file
204. int a = int(pieces[0]);
205. int b = int(pieces[1]);
206. int c = int(pieces[2]);
207. int d = int(pieces[3]);
208. int e = int(pieces[4]);
209. int f = int(pieces[5]);
210. int g = int(pieces[6]);
211. int h = int(pieces[7]);
212. smooth();
213. stroke(255, 0, 0);
214. strokeWeight(.25);
215. noFill();
216. bezier (a, b, c, d, e, f, g, h);
217. //end of code for drawing bezier splines between nodes
219. }//for
220. }
222. } else if (mouseX > 366 && mouseX < 386 && mouseY > 110 && mouseY < 130) {
223. String[] lines = loadStrings("node_connect_3.txt");
225. for ( int i = 0; i< lines.length; i++) {
226. String[] pieces = split(lines[i], '\t');
227. if (pieces.length ==8) { //number of items in each row of .txt file
228. int a = int(pieces[0]);
229. int b = int(pieces[1]);
230. int c = int(pieces[2]);
231. int d = int(pieces[3]);
232. int e = int(pieces[4]);
233. int f = int(pieces[5]);
234. int g = int(pieces[6]);
235. int h = int(pieces[7]);
236. smooth();
237. stroke(255, 0, 0);
238. strokeWeight(.25);
239. noFill();
240. bezier (a, b, c, d, e, f, g, h);
241. //end of code for drawing bezier splines between nodes
243. }//for
244. }
246. } else if (mouseX > 614 && mouseX < 634 && mouseY > 110 && mouseY < 130) {
247. String[] lines = loadStrings("node_connect_3.txt");
249. for ( int i = 0; i< lines.length; i++) {
250. String[] pieces = split(lines[i], '\t');
251. if (pieces.length ==8) { //number of items in each row of .txt file
252. int a = int(pieces[0]);
253. int b = int(pieces[1]);
254. int c = int(pieces[2]);
255. int d = int(pieces[3]);
256. int e = int(pieces[4]);
257. int f = int(pieces[5]);
258. int g = int(pieces[6]);
259. int h = int(pieces[7]);
260. smooth();
261. stroke(255, 0, 0);
262. strokeWeight(.25);
263. noFill();
264. bezier (a, b, c, d, e, f, g, h);
265. //end of code for drawing bezier splines between nodes
267. }//for
268. }
270. } else if (mouseX > 814 && mouseX < 834 && mouseY > 255 && mouseY < 275) {
271. String[] lines = loadStrings("node_connect_3.txt");
273. for ( int i = 0; i< lines.length; i++) {
274. String[] pieces = split(lines[i], '\t');
275. if (pieces.length ==8) { //number of items in each row of .txt file
276. int a = int(pieces[0]);
277. int b = int(pieces[1]);
278. int c = int(pieces[2]);
279. int d = int(pieces[3]);
280. int e = int(pieces[4]);
281. int f = int(pieces[5]);
282. int g = int(pieces[6]);
283. int h = int(pieces[7]);
284. smooth();
285. stroke(255, 0, 0);
286. strokeWeight(.25);
287. noFill();
288. bezier (a, b, c, d, e, f, g, h);
289. //end of code for drawing bezier splines between nodes
291. }//for
292. }
294. }
295. } // func
296. // ==========================================================
297. class Node {
298. float xpos; // each node has its properties
299. float ypos;
300. Node(float tempX, float tempY) {
301. // each node gets its properties here in the Constructor
302. xpos = tempX;
303. ypos = tempY;
304. } // Constructor
305. //
306. void display () {
307. stroke(255, 0, 0);
308. fill(70);
309. smooth();
310. int radius = (400);
311. // use the individual properties to draw one node
312. ellipse (xpos + radius, ypos + radius, 8, 8);
314. //links to .txt file to draw bezier splines between nodes
315. //if
316. } // func
317. //
318. } // class
What I am essentially trying to do is create an inner and outer circle comprised of points (and the number of points need to be able to change) and then connect certain points using a bezier when I rollover those points.
I am trying to create a class and then reference objects from that class.
I've created a class called nodes (the points).

I've made a large inner and outer circle out of these nodes.

I can find the x and y position of each individual node using this part of the code.
  Node node = (Node) nodes.get(1);

  println (node.xpos + 400);

  println (node.ypos + 400);

Then I can individually input each of these coordinates and create a bezier spline to connect certain nodes to each other using a string to read information from a .txt file where I have manually input all of the node locations. The biggest problem with doing it this way is that if the number of nodes changes, then I have to go back and find the x and y position of each node again and then manually input all of the information again.

Here is an image of what it should look like:

It seems that there should be a way to say draw a bezier between one node and another node without having to go through all of this manually input.

If anyone can help, thanks! If you need more information of if you need the .txt files, I can send them to you but I can't find a way to attach them on this forum.

question about using a .txt file

[5 Replies]
- 07-Feb-2012 07:55 PM
- Forum: General Discussion
Does anyone know if I can use the text in a .txt file as text in a processing sketch? For example, say I want to have a paragraph of text show up in my processing sketch. Can I link it from a file so I don't have to type it all in to the sketch? Also, if I can do this, can I edit bits of the text separately or will processing read it all as one file?

bezier from .txt file

[2 Replies]
- 27-Jan-2012 12:02 PM
- Forum: General Discussion
Does anyone know if you can import coordinates for a series of bezier curves from a .txt file? If so, do you know how to do this?

trouble setting up a class

[8 Replies]
- 25-Jan-2012 08:59 AM
- Forum: Programming Questions
I'm trying to create a class called node that will draw a series of circles that can then have functions. I want this series of circles to be drawn around a larger circle. I'm having trouble setting up the class. It also tells me I'm switching between active and static modes. Help, can anyone tell me what I'm doing wrong?

size(1000, 1000);

background(0);

class Node {

  color c;

  float xpos;

  float ypos;

  Node() {

   c = color(255,0,0);

  }

  void display () {

   noFill();

   smooth();

   int radius = (400);

   for (int deg = 0; deg < 360; deg += 36) {

   float angle = radians (deg);

   float x = 100 + (cos(angle) * radius);

   float y = 100 + (sin(angle) * radius);

   ellipse (x + radius, y + radius, 6, 6);

   }

  }

}

Trouble with arrays

[2 Replies]
- 21-Jan-2012 01:12 PM
- Forum: General Discussion
I'm trying to create a large circle composed of a variable number of points ( or smaller circles ). I can do this by making each smaller circle individually, but it seems like I should be able to create an array. I want to be able to access each of the smaller circles and make changes to it (color, etc.) without affecting all the smaller circles. Does anyone know how to do this? I'll include the code I've written to create each circle individually and the code I wrote that is much shorter and works, but I don't know how to access each smaller circle individually in this code. Please help!!!

//first code where I create each smaller circle individually

size(1000, 1000);

background(0);

stroke(255,0,0);

noFill();

smooth();

int radius = (400);

float angle = radians (36);

float x = 100 + (cos(angle) * radius);

float y = 100 + (sin(angle) * radius);

ellipse (x + radius, y + radius, 6, 6);

float angle2 = radians (72);

float x2 = 100 + (cos(angle2) * radius);

float y2 = 100 + (sin(angle2) * radius);

ellipse (x2 + radius, y2 + radius, 6, 6);

float angle3 = radians (108);

float x3 = 100 + (cos(angle3) * radius);

float y3 = 100 + (sin(angle3) * radius);

ellipse (x3 + radius, y3 + radius, 6, 6);

float angle4 = radians (144);

float x4 = 100 + (cos(angle4) * radius);

float y4 = 100 + (sin(angle4) * radius);

ellipse (x4 + radius, y4 + radius, 6, 6);

float angle5 = radians (180);

float x5 = 100 + (cos(angle5) * radius);

float y5 = 100 + (sin(angle5) * radius);

ellipse (x5 + radius, y5 + radius, 6, 6);

float angle6 = radians (216);

float x6 = 100 + (cos(angle6) * radius);

float y6 = 100 + (sin(angle6) * radius);

ellipse (x6 + radius, y6 + radius, 6, 6);

float angle7 = radians (252);

float x7 = 100 + (cos(angle7) * radius);

float y7 = 100 + (sin(angle7) * radius);

ellipse (x7 + radius, y7 + radius, 6, 6);

float angle8 = radians (288);

float x8 = 100 + (cos(angle8) * radius);

float y8 = 100 + (sin(angle8) * radius);

ellipse (x8 + radius, y8 + radius, 6, 6);

float angle9 = radians (324);

float x9 = 100 + (cos(angle9) * radius);

float y9 = 100 + (sin(angle9) * radius);

ellipse (x9 + radius, y9 + radius, 6, 6);

float angle10 = radians (360);

float x10 = 100 + (cos(angle10) * radius);

float y10 = 100 + (sin(angle10) * radius);

ellipse (x10 + radius, y10 + radius, 6, 6);

---------------------------------------------------------------

//other code

//I can't access each of the smaller circles individually in this code

//help!!!

size(1000, 1000);

background(0);

stroke(255,0,0);

noFill();

smooth();

int radius = (400);

for (int deg = 0; deg < 360; deg += 36) {

  float angle = radians (deg);

  float x = 100 + (cos(angle) * radius);

  float y = 100 + (sin(angle) * radius);

  ellipse (x + radius, y + radius, 6, 6);

}

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