API tools faq
paste
Guest User

FrustrumImpl

a guest
Dec 10th, 2012
101
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
text 6.11 KB | None | 0 0
raw download clone embed print report
  1. package co.uk.n3network.Meatis;
  2.  
  3. import java.nio.FloatBuffer;
  4.  
  5. import org.lwjgl.BufferUtils;
  6. import org.lwjgl.opengl.GL11;
  7.  
  8. public class FrustrumImpl extends Frustrum {
  9.  
  10. public static FrustrumImpl instance = new FrustrumImpl();
  11. public FloatBuffer projectionBuff = BufferUtils.createFloatBuffer(16);
  12. public FloatBuffer modelviewBuff = BufferUtils.createFloatBuffer(16);
  13. public FloatBuffer unused = BufferUtils.createFloatBuffer(16);
  14.  
  15.  
  16. public static Frustrum update() {
  17. FrustrumImpl var0 = instance;
  18. instance.projectionBuff.clear();
  19. var0.modelviewBuff.clear();
  20. var0.unused.clear();
  21. GL11.glGetFloat(2983, var0.projectionBuff);
  22. GL11.glGetFloat(2982, var0.modelviewBuff);
  23. var0.projectionBuff.flip().limit(16);
  24. var0.projectionBuff.get(var0.projection);
  25. var0.modelviewBuff.flip().limit(16);
  26. var0.modelviewBuff.get(var0.modelview);
  27. var0.clipping[0] = var0.modelview[0] * var0.projection[0] + var0.modelview[1] * var0.projection[4] + var0.modelview[2] * var0.projection[8] + var0.modelview[3] * var0.projection[12];
  28. var0.clipping[1] = var0.modelview[0] * var0.projection[1] + var0.modelview[1] * var0.projection[5] + var0.modelview[2] * var0.projection[9] + var0.modelview[3] * var0.projection[13];
  29. var0.clipping[2] = var0.modelview[0] * var0.projection[2] + var0.modelview[1] * var0.projection[6] + var0.modelview[2] * var0.projection[10] + var0.modelview[3] * var0.projection[14];
  30. var0.clipping[3] = var0.modelview[0] * var0.projection[3] + var0.modelview[1] * var0.projection[7] + var0.modelview[2] * var0.projection[11] + var0.modelview[3] * var0.projection[15];
  31. var0.clipping[4] = var0.modelview[4] * var0.projection[0] + var0.modelview[5] * var0.projection[4] + var0.modelview[6] * var0.projection[8] + var0.modelview[7] * var0.projection[12];
  32. var0.clipping[5] = var0.modelview[4] * var0.projection[1] + var0.modelview[5] * var0.projection[5] + var0.modelview[6] * var0.projection[9] + var0.modelview[7] * var0.projection[13];
  33. var0.clipping[6] = var0.modelview[4] * var0.projection[2] + var0.modelview[5] * var0.projection[6] + var0.modelview[6] * var0.projection[10] + var0.modelview[7] * var0.projection[14];
  34. var0.clipping[7] = var0.modelview[4] * var0.projection[3] + var0.modelview[5] * var0.projection[7] + var0.modelview[6] * var0.projection[11] + var0.modelview[7] * var0.projection[15];
  35. var0.clipping[8] = var0.modelview[8] * var0.projection[0] + var0.modelview[9] * var0.projection[4] + var0.modelview[10] * var0.projection[8] + var0.modelview[11] * var0.projection[12];
  36. var0.clipping[9] = var0.modelview[8] * var0.projection[1] + var0.modelview[9] * var0.projection[5] + var0.modelview[10] * var0.projection[9] + var0.modelview[11] * var0.projection[13];
  37. var0.clipping[10] = var0.modelview[8] * var0.projection[2] + var0.modelview[9] * var0.projection[6] + var0.modelview[10] * var0.projection[10] + var0.modelview[11] * var0.projection[14];
  38. var0.clipping[11] = var0.modelview[8] * var0.projection[3] + var0.modelview[9] * var0.projection[7] + var0.modelview[10] * var0.projection[11] + var0.modelview[11] * var0.projection[15];
  39. var0.clipping[12] = var0.modelview[12] * var0.projection[0] + var0.modelview[13] * var0.projection[4] + var0.modelview[14] * var0.projection[8] + var0.modelview[15] * var0.projection[12];
  40. var0.clipping[13] = var0.modelview[12] * var0.projection[1] + var0.modelview[13] * var0.projection[5] + var0.modelview[14] * var0.projection[9] + var0.modelview[15] * var0.projection[13];
  41. var0.clipping[14] = var0.modelview[12] * var0.projection[2] + var0.modelview[13] * var0.projection[6] + var0.modelview[14] * var0.projection[10] + var0.modelview[15] * var0.projection[14];
  42. var0.clipping[15] = var0.modelview[12] * var0.projection[3] + var0.modelview[13] * var0.projection[7] + var0.modelview[14] * var0.projection[11] + var0.modelview[15] * var0.projection[15];
  43. var0.frustrum[0][0] = var0.clipping[3] - var0.clipping[0];
  44. var0.frustrum[0][1] = var0.clipping[7] - var0.clipping[4];
  45. var0.frustrum[0][2] = var0.clipping[11] - var0.clipping[8];
  46. var0.frustrum[0][3] = var0.clipping[15] - var0.clipping[12];
  47. normalize(var0.frustrum, 0);
  48. var0.frustrum[1][0] = var0.clipping[3] + var0.clipping[0];
  49. var0.frustrum[1][1] = var0.clipping[7] + var0.clipping[4];
  50. var0.frustrum[1][2] = var0.clipping[11] + var0.clipping[8];
  51. var0.frustrum[1][3] = var0.clipping[15] + var0.clipping[12];
  52. normalize(var0.frustrum, 1);
  53. var0.frustrum[2][0] = var0.clipping[3] + var0.clipping[1];
  54. var0.frustrum[2][1] = var0.clipping[7] + var0.clipping[5];
  55. var0.frustrum[2][2] = var0.clipping[11] + var0.clipping[9];
  56. var0.frustrum[2][3] = var0.clipping[15] + var0.clipping[13];
  57. normalize(var0.frustrum, 2);
  58. var0.frustrum[3][0] = var0.clipping[3] - var0.clipping[1];
  59. var0.frustrum[3][1] = var0.clipping[7] - var0.clipping[5];
  60. var0.frustrum[3][2] = var0.clipping[11] - var0.clipping[9];
  61. var0.frustrum[3][3] = var0.clipping[15] - var0.clipping[13];
  62. normalize(var0.frustrum, 3);
  63. var0.frustrum[4][0] = var0.clipping[3] - var0.clipping[2];
  64. var0.frustrum[4][1] = var0.clipping[7] - var0.clipping[6];
  65. var0.frustrum[4][2] = var0.clipping[11] - var0.clipping[10];
  66. var0.frustrum[4][3] = var0.clipping[15] - var0.clipping[14];
  67. normalize(var0.frustrum, 4);
  68. var0.frustrum[5][0] = var0.clipping[3] + var0.clipping[2];
  69. var0.frustrum[5][1] = var0.clipping[7] + var0.clipping[6];
  70. var0.frustrum[5][2] = var0.clipping[11] + var0.clipping[10];
  71. var0.frustrum[5][3] = var0.clipping[15] + var0.clipping[14];
  72. normalize(var0.frustrum, 5);
  73. return instance;
  74. }
  75.  
  76. public static void normalize(float[][] var0, int var1) {
  77. float var2 = (float) Math.sqrt(var0[var1][0] * var0[var1][0] + var0[var1][1] * var0[var1][1] + var0[var1][2] * var0[var1][2]);
  78. var0[var1][0] /= var2;
  79. var0[var1][1] /= var2;
  80. var0[var1][2] /= var2;
  81. var0[var1][3] /= var2;
  82. }
  83.  
  84. }
Advertisement
Add Comment
Please, Sign In to add comment
Public Pastes
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!