vcglib/apps/nexus/exploder.cpp

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2004-11-18 19:30:15 +01:00
#include <stdlib.h>
#include <iostream>
#include "nexus.h"
using namespace nxs;
using namespace vcg;
using namespace std;
Point3f explode(Point3f &v, Point3f &center, Point3f &dir, float mag) {
v = ((v - center) * mag + center) + dir;
return v;
}
int main(int argc, char *argv[]) {
if(argc < 3) {
cerr << "Usage: " << argv[0] << " <input> <output> [factor]\n";
return -1;
}
string input = argv[1];
string output = argv[2];
float factor = 2;
if(argc == 4) {
factor = atoi(argv[3]);
if(factor == 0) {
cerr << "Invalid factor: " << argv[3] << endl;
return -1;
}
}
Nexus in;
if(!in.Load(input, true)) {
cerr << "Could not load nexus: " << input << endl;
return -1;
}
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2004-11-18 19:30:15 +01:00
Nexus out;
if(!out.Create(output, in.signature, in.chunk_size)) {
cerr << "Could not create nexus: " << output << endl;
return -1;
}
out.sphere = in.sphere;
out.history = in.history;
for(unsigned int i = 0; i < in.index.size(); i++) {
unsigned int patch = i;
Nexus::PatchInfo &src_entry = in.index[patch];
Patch &src_patch = in.GetPatch(patch);
Border src_border = in.GetBorder(patch);
out.AddPatch(src_entry.nvert, src_entry.nface, src_border.Available());
Nexus::PatchInfo &dst_entry = out.index[patch];
Patch dst_patch = out.GetPatch(patch);
Point3f dir = src_entry.sphere.Center() - in.sphere.Center();
dir.Normalize();
dir *= 10 * src_entry.error;
memcpy(dst_patch.VertBegin(), src_patch.VertBegin(),
src_patch.nv * sizeof(Point3f));
Point3f *ptr = dst_patch.VertBegin();
for(int i = 0; i < dst_patch.nv; i++) {
ptr[i] = explode(ptr[i], src_entry.sphere.Center(), dir,
0.5 *src_entry.error);
}
if(in.signature & NXS_STRIP) {
memcpy(dst_patch.FaceBegin(), src_patch.FaceBegin(),
src_patch.nf * sizeof(unsigned short));
} else {
memcpy(dst_patch.FaceBegin(), src_patch.FaceBegin(),
src_patch.nf * sizeof(unsigned short) * 3);
}
if((in.signature & NXS_COLORS) && (out.signature & NXS_COLORS))
memcpy(dst_patch.ColorBegin(), src_patch.ColorBegin(),
src_patch.nv * sizeof(unsigned int));
if((in.signature & NXS_NORMALS_SHORT) &&
(out.signature & NXS_NORMALS_SHORT))
memcpy(dst_patch.Norm16Begin(), src_patch.Norm16Begin(),
src_patch.nv * sizeof(short)*4);
//reordering
//WATCH OUT BORDERS!
// Reorder(out.signature, dst_patch);
//copying entry information;
dst_entry.sphere = src_entry.sphere;
dst_entry.error = src_entry.error;
//adding borders.
for(unsigned int i = 0; i < src_border.Size(); i++) {
Link &link = src_border[i];
if(link.IsNull()) continue;
assert(link.end_patch < in.index.size());
}
Border dst_border = out.GetBorder(patch);
out.borders.ResizeBorder(patch, src_border.Size());
memcpy(dst_border.Start(), src_border.Start(),
src_border.Size() * sizeof(Link));
}
in.Close();
out.Close();
return 0;
}