[3261] | 1 | #include "ObjExporter.h"
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| 2 | #include "SceneEntity.h"
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| 3 | #include "Shape.h"
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| 4 | #include "Geometry.h"
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[3274] | 5 | #include "Transform3.h"
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[3261] | 6 |
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| 7 |
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| 8 | using namespace std;
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| 9 |
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| 10 | // MAGIC of all bin exports
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| 11 | #ifndef MAGIC
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| 12 | #define MAGIC 0x827923
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| 13 | #endif
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| 14 |
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| 15 | #define BVH_VERSION 2.1
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| 16 |
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| 17 | namespace CHCDemoEngine
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| 18 | {
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| 19 |
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| 20 | static int currentIdx = 0;
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| 21 |
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| 22 |
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[3274] | 23 | int ObjExporter::WriteGeometry(Geometry *geom, ofstream &ostream, Transform3 *trafo)
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[3261] | 24 | {
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| 25 | int numVertices;
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| 26 | Vector3 *vertices = geom->GetVertices(numVertices);
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| 27 |
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[3272] | 28 | char str[100];
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| 29 |
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[3261] | 30 | //cout << "vtx: " << numVertices << endl;
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| 31 | for (int i = 0; i < numVertices; ++ i)
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| 32 | {
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[3274] | 33 | Vector3 v = trafo->GetMatrix() * vertices[i];
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| 34 |
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[3272] | 35 | sprintf(str, "v %f %f %f\n", v.x, v.z, -v.y);
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| 36 | ostream << str;
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[3261] | 37 | }
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| 38 |
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| 39 | return numVertices;
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| 40 | }
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| 41 |
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| 42 |
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| 43 | bool ObjExporter::Export(const string &filename, Bvh *bvh)
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| 44 | {
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| 45 | cout << "Exporting obj to file '" << filename.c_str() << "'" << endl;
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| 46 |
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| 47 | ofstream ostream(filename.c_str());
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| 48 |
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| 49 | if (!ostream.is_open())
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| 50 | {
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| 51 | cerr << "Error: Cannot open file " << filename.c_str() << " for writing" << endl;
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| 52 | return false;
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| 53 | }
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| 54 |
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| 55 | int numVertices = 0;
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| 56 |
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[3273] | 57 | BvhNodeContainer nodes;
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| 58 | bvh->CollectVirtualLeaves(bvh->GetStaticRoot(), nodes);
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[3261] | 59 |
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| 60 | cout << "writing " << nodes.size() << " objects ..." << endl;
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| 61 |
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[3273] | 62 | BvhNodeContainer::const_iterator it, it_end = nodes.end();
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[3261] | 63 |
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| 64 | int j = 0;
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| 65 | const int t = 1000;
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| 66 |
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| 67 | for (it = nodes.begin(); it != it_end; ++ it, ++ j)
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| 68 | {
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| 69 | if ((j % t) == (t - 1))
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| 70 | cout << j + 1 << endl;
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| 71 |
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| 72 | BvhNode *node = *it;
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| 73 |
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| 74 | int geometrySize;
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| 75 | SceneEntity **entities = bvh->GetGeometry(node, geometrySize);
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| 76 |
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| 77 | for (int i = 0; i < geometrySize; ++ i)
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| 78 | {
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[3274] | 79 | Transform3 *trafo = entities[i]->GetTransform();
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| 80 |
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[3261] | 81 | ShapeContainer::iterator sit, send;
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| 82 | entities[i]->GetLODLevel(0, sit, send);
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| 83 |
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| 84 | for (; sit != send; ++ sit)
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| 85 | {
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| 86 | Geometry *geom = (*sit)->GetGeometry();
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[3272] | 87 |
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| 88 | int dummy;
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| 89 | if (!geom->GetVertices(dummy))
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| 90 | {
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| 91 | cerr << "error: geometry was deleted on loading, exporting obj failed" << endl;
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| 92 | return false;
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| 93 | }
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| 94 |
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[3274] | 95 | numVertices += WriteGeometry(geom, ostream, trafo);
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[3261] | 96 | }
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| 97 | }
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| 98 | }
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| 99 |
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| 100 | cout << "finished" << endl;
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| 101 | cout << "writing " << numVertices << " indices ..." << endl;
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| 102 |
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| 103 | for (int i = 0; i < numVertices; i += 3)
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| 104 | {
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[3273] | 105 | ostream << "f " << i + 1 << " " << i + 2 << " " << i + 3 << endl;
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[3261] | 106 | }
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| 107 |
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| 108 | cout << "successfully exported obj" << endl;
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| 109 |
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| 110 | return true;
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| 111 | }
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| 112 |
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| 113 |
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| 114 | } |
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