import javax.media.j3d.*; import com.sun.j3d.utils.compression.*; import java.io.*; public class CompressionTest { public CompressionTest() { } /** * Main test code. Takes no arguments */ public static void main(String[] args) { saveCG(createGeometry(),null); //saveCG(createGeometry(),"c:\\temp\\test.cg"); } /** * Creates the 6 triangle piece of geometry from a real data file that * is giving me issues with compression. The scale is from * (-0.99,-0.99,-0.99) to (0.99,0.99,0.99) */ static public Geometry createGeometry() { float[] coords = new float[54]; //Obj vertex: 1 coords[0] = 0.5166348f; coords[1] = -0.99f; coords[2] = -0.99f; //Obj vertex: 2 coords[3] = 0.99f; coords[4] = -0.8282335f; coords[5] = -0.99f; //Obj vertex: 3 coords[6] = 0.15761456f; coords[7] = 0.08099296f; coords[8] = -1.888275E-5f; //Obj vertex: 4 coords[9] = -0.23650905f; coords[10] = -0.053812362f; coords[11] = -1.888275E-5f; //Obj vertex: 5 coords[12] = 0.15761456f; coords[13] = 0.08099296f; coords[14] = -1.888275E-5f; //Obj vertex: 6 coords[15] = -0.048135556f; coords[16] = 0.30588818f; coords[17] = 0.24486668f; //Obj vertex: 7 coords[18] = -0.048135556f; coords[19] = 0.30588818f; coords[20] = 0.24486668f; //Obj vertex: 8 coords[21] = -0.4231438f; coords[22] = 0.17765848f; coords[23] = 0.24486668f; //Obj vertex: 9 coords[24] = -0.23650905f; coords[25] = -0.053812362f; coords[26] = -1.888275E-5f; //Obj vertex: 10 coords[27] = -0.048135556f; coords[28] = 0.30588818f; coords[29] = 0.24486668f; //Obj vertex: 11 coords[30] = -0.67442214f; coords[31] = 0.99f; coords[32] = 0.99f; //Obj vertex: 12 coords[33] = -0.99f; coords[34] = 0.8821553f; coords[35] = 0.99f; //Obj vertex: 13 coords[36] = -0.99f; coords[37] = 0.8821553f; coords[38] = 0.99f; //Obj vertex: 14 coords[39] = -0.4231438f; coords[40] = 0.17765848f; coords[41] = 0.24486668f; //Obj vertex: 15 coords[42] = -0.048135556f; coords[43] = 0.30588818f; coords[44] = 0.24486668f; //Obj vertex: 16 coords[45] = 0.15761456f; coords[46] = 0.08099296f; coords[47] = -1.888275E-5f; //Obj vertex: 17 coords[48] = -0.23650905f; coords[49] = -0.053812362f; coords[50] = -1.888275E-5f; //Obj vertex: 18 coords[51] = 0.5166348f; coords[52] = -0.99f; coords[53] = -0.99f; float[] normals = new float[54]; //Obj normals: 1 normals[0] = 0.36361238f; normals[1] = -0.6481123f; normals[2] = 0.6691311f; //Obj normals: 2 normals[3] = 0.36361238f; normals[4] = -0.6481123f; normals[5] = 0.6691311f; //Obj normals: 3 normals[6] = 0.36361238f; normals[7] = -0.6481123f; normals[8] = 0.6691311f; //Obj normals: 4 normals[9] = 0.36361238f; normals[10] = -0.6481123f; normals[11] = 0.6691311f; //Obj normals: 5 normals[12] = 0.36361238f; normals[13] = -0.6481123f; normals[14] = 0.6691311f; //Obj normals: 6 normals[15] = 0.36361238f; normals[16] = -0.6481123f; normals[17] = 0.6691311f; int[] coordIndices = new int[18]; coordIndices[0] = 0; coordIndices[1] = 1; coordIndices[2] = 2; coordIndices[3] = 3; coordIndices[4] = 2; coordIndices[5] = 5; coordIndices[6] = 5; coordIndices[7] = 7; coordIndices[8] = 3; coordIndices[9] = 5; coordIndices[10] = 10; coordIndices[11] = 11; coordIndices[12] = 11; coordIndices[13] = 7; coordIndices[14] = 5; coordIndices[15] = 2; coordIndices[16] = 3; coordIndices[17] = 0; int[] normalIndices = new int[18]; normalIndices[0] = 0; normalIndices[1] = 0; normalIndices[2] = 0; normalIndices[3] = 0; normalIndices[4] = 0; normalIndices[5] = 0; normalIndices[6] = 0; normalIndices[7] = 0; normalIndices[8] = 0; normalIndices[9] = 0; normalIndices[10] = 0; normalIndices[11] = 0; normalIndices[12] = 0; normalIndices[13] = 0; normalIndices[14] = 0; normalIndices[15] = 0; normalIndices[16] = 0; normalIndices[17] = 0; IndexedTriangleArray ita = new IndexedTriangleArray(coords.length/3, ita.COORDINATES | ita.NORMALS,coordIndices.length); ita.setCoordinates(0,coords); ita.setNormals(0,normals); ita.setCoordinateIndices(0,coordIndices); ita.setNormalIndices(0,normalIndices); return ita; } /* //--Obj file with the same geometry g shape v 0.5166348 -0.99 -0.99 v 0.99 -0.8282335 -0.99 v 0.15761456 0.08099296 -1.888275E-5 v -0.23650905 -0.053812362 -1.888275E-5 v 0.15761456 0.08099296 -1.888275E-5 v -0.048135556 0.30588818 0.24486668 v -0.048135556 0.30588818 0.24486668 v -0.4231438 0.17765848 0.24486668 v -0.23650905 -0.053812362 -1.888275E-5 v -0.048135556 0.30588818 0.24486668 v -0.67442214 0.99 0.99 v -0.99 0.8821553 0.99 v -0.99 0.8821553 0.99 v -0.4231438 0.17765848 0.24486668 v -0.048135556 0.30588818 0.24486668 v 0.15761456 0.08099296 -1.888275E-5 v -0.23650905 -0.053812362 -1.888275E-5 v 0.5166348 -0.99 -0.99 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 vn 0.36361238 -0.6481123 0.6691311 f 1//1 2//1 3//1 f 4//1 3//1 6//1 f 6//1 8//1 4//1 f 6//1 11//1 12//1 f 12//1 8//1 6//1 f 3//1 4//1 1//1 */ /** * Saves the Geometry * @param geom Geometry to save * @param filename Full path of the .cg file to create. If this is null, * it tests compression in memory. null is the easiest way to test. */ public static void saveCG(Geometry geom,String filename) { //create the array of shapes for the compression stream Shape3D shape = new Shape3D(geom); Shape3D[] shapes = new Shape3D[1]; shapes[0] = shape; int positionQuant = 16; int colorQuant = 8; int normalQuant = 3; //create the compression stream CompressionStream cStream = new CompressionStream(positionQuant, colorQuant, normalQuant,shapes); GeometryCompressor comp = null; RandomAccessFile rfile = null; CompressedGeometry compGeom = null; CompressedGeometryFile file = null; try { if (filename != null) { //this tests by creating a .cg file //the error happens if you load in the sample with the //compression example. cgview I believe. rfile = new RandomAccessFile(filename,"rw"); file = new CompressedGeometryFile(rfile); comp = new GeometryCompressor(); comp.compress(cStream,file); file.close(); rfile.close(); } else { //this tests by creating an in memory object comp = new GeometryCompressor(); compGeom = comp.compress(cStream); compGeom.decompress(); } } catch (java.lang.Exception e) { e.printStackTrace(); return; } } }