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Turning a map into a globe.

[3 Replies]
- 20-Nov-2011 10:13 PM
- Forum: Core Library Questions
I've been working with plotting KML files (essentially an XML format for maps) recently. The long and short of my issue is that I've been able to get the map to work well, but the globes render with mangled geometry and big holes in the continents. I am using the same data, and parsing code, but the transition to 3D introduces rendering issues I can't pin down.

If anyone could have a look at this code and lend a hand, I would be extremely grateful.

Archive with data posted here: http://feltron.com/downloads/XML_Globe_112011d.zip

Processing code below.
1. // LIBRARIES
2. import processing.opengl.*;
5. // GLOBAL VARIABLES
6. String source = "110m_land.kml";
7. String path = "Document/Folder/Placemark/Polygon/outerBoundaryIs/LinearRing/coordinates";
8. float sphereRadius = 200;
9. XMLElement kml;
10. XMLElement[] polygons;
11. String[] polygon;
12. MapShape myMapShape[];
13. int n = 1;
16. // SETUP
17. void setup() {
18. size(1200, 600, OPENGL);
19. background(0);
20. lights();
21. smooth();
22. noStroke();
23. parseKML();
24. // Instantiate MapShape Array
25. myMapShape = new MapShape[polygons.length];
26. for (int i = 0; i<polygons.length; i++) {
27. myMapShape[i] = new MapShape(polygon[i]);
28. int n = i+1;
29. println("polygon " + n + " of " + polygon.length);
30. }
31. }
34. // DRAW LOOP
35. void draw() {
36. background(0);
37. fill(102);
38. for (int i = 0; i<polygons.length; i++) {
39. myMapShape[i].display();
40. }
41. n++;
42. println(n);
43. }
46. // KML PARSING FUNCTION
47. void parseKML() {
48. kml = new XMLElement(this, source);
49. polygons = kml.getChildren(path);
50. polygon = new String[polygons.length];
51. for (int i = 0; i<polygons.length; i++) {
52. polygon[i] = polygons[i].getContent();
53. }
54. }
57. // MAPSHAPE CLASS
58. class MapShape {
59. String PolyString;
60. String[][] PolyLatLong;
62. // The Constructor is defined with arguments.
63. MapShape(String TempPolyString) {
64. PolyString = TempPolyString;
65. String[] PolyStringClean = split(PolyString, ' ');
66. PolyLatLong = new String[PolyStringClean.length][2];
67. for (int i=0; i<PolyStringClean.length; i++) {
68. String[] PolyStringCleanSplit = split(PolyStringClean[i], ',');
69. PolyLatLong[i][0] = PolyStringCleanSplit[0];
70. PolyLatLong[i][1] = PolyStringCleanSplit[1];
71. // println(PolyLatLong[i][0] + ", " + PolyLatLong[i][1]);
72. }
73. }
76. // 3D Render the Object
77. void display() {
78. pushMatrix();
79. translate(width/2, height/2);
80. rotateY(radians(n));
81. rotateX(HALF_PI);
82. beginShape();
83. for (int i=0; i < PolyLatLong.length; i++) {
84. float Ypos = sphereRadius * cos(radians(float(PolyLatLong[i][1]))) * cos(radians(float(PolyLatLong[i][0])));
85. float Xpos = sphereRadius * cos(radians(float(PolyLatLong[i][1]))) * sin(radians(float(PolyLatLong[i][0])));
86. float Zpos = sphereRadius * sin(radians(float(PolyLatLong[i][1])));
87. vertex(Xpos, Ypos, Zpos);
88. }
89. endShape(CLOSE);
90. popMatrix();
91. }
94. /*
95. // 2D Render the Object
96. void display() {
97. beginShape();
98. for (int i=0; i < PolyLatLong.length; i++) {
99. vertex(map(float(PolyLatLong[i][0]), -180, 180, 0, width), map(float(PolyLatLong[i][1]), 90, -90, 0, height));
100. }
101. endShape(CLOSE);
102. }
103. */
104. }

pdf problem - elements missing in output

[2 Replies]
- 04-Aug-2010 08:11 AM
- Forum: Programming Questions
I'm using Lee Byron's mesh library to generate voronoi shapes, and while they are drawing perfectly as bitmaps, when I save the results as a pdf, all the voronoi lines are missing.

Could this be a result of the JAVA method used to generate the voronoi boundaries?

The code is posted here: http://feltron.com/downloads/NYC_Voronoi_080410b.zip

Lee Byron's site is not currently working, but this is his mesh library: http://feltron.com/downloads/mesh.zip

Thanks.

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