Processing Forum

Creating a union of lines with specified strokeWeight

[5 Replies]
- 08-Sep-2013 02:56 AM
- Forum: General Discussion
Hi, I am trying to achieve the "unite" function in Pathfinder of Adobe Illustrator to draw lines of different stroke weight and stroke joint, then get a union of shapes. In illustrator, I would expand the strokes first to outline, and unite them in Pathfinder.

One easy work around is just to draw the lines with a specific color, export as a pdf and use the illustrator to select and unite them.... but how can I achieve this in Processing sketch?

So far, I tried using Geomerative library to union RShapes. The union works well with primitive shapes, such as rectangle and circle, but I get odd shapes when I get RShape from RPath with stroke setting and get a union....

This seems something easy to achieve to novice, but is it something difficult to achieve?

Any advice would be appreciated.

Geomerative and strokeWeight()

[1 Reply]
- 07-Sep-2013 08:59 AM
- Forum: Contributed Library Questions
Hi, I am trying to make a RShape that is made of lines with different strokeWeight overlapping or crossing. The reason behind it is that I just want one vector object when I export it, rather than lots of small vectors.

Adding RShape objects seem to work, but when I try to vary the strokeWeight, it does not change the stroke weight of lines. Could someone advise me how to achieve this?

The following is the code what I have:
1. RShape grp;
3. //coordinates
4. int[] x_pos = {50, 100, 150, 200, 250, 300};
5. int[][] y_pos = {{100, 100, 60, 60, 100, 100},
6. {120, 120, 160, 160, 120, 120},
7. {200, 200, 200, 200, 200, 200}};
8. int[] line_width = {10, 30, 15};
10. void setup() {
11. size(600, 400);
12. background(255);
14. RG.init(this);
15. noFill();
16. stroke(0, 120);
17. strokeCap(SQUARE);
18. strokeJoin(ROUND);
20. grp = new RShape();
21. for (int i = 0; i < line_width.length; i++) {
22. strokeWeight(line_width[i]);
23. RShape newShape = new RShape();
24. RPath path = new RPath(x_pos[0], y_pos[i][0]);
25. for (int j = 1; j< x_pos.length; j++) {
26. path.addLineTo(x_pos[j], y_pos[i][j]);
27. }
28. newShape.addShape(path.toShape());
29. grp.addShape(newShape);
30. }
31. }
34. void draw() {
35. background(255);
37. grp.draw();
39. // this is what I want them to look like
40. // for (int i = 0; i < line_width.length; i++) {
41. // strokeWeight(line_width[i]);
42. // strokeCap(SQUARE);
43. // noFill();
44. // stroke(color(234, 46, 75, 120));
45. // beginShape();
46. // for (int j = 0; j< x_pos.length; j++) {
47. // vertex(x_pos[j], y_pos[i][j]);
48. // }
49. // endShape();
50. // }
51. }

Sorting TableRow in Table

[2 Replies]
- 26-Aug-2013 03:19 PM
- Forum: Core Library Questions
Is there an easy way to sort TableRow classes by specifying a column index ( int) or title (String)? Or should I create a new class which implements Comparable? StringLit, IntList, FloatList do sorting but how can I have the sorting result applied or reflected in the original Table object?

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