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Merge branch 'a/writemesh' of scuti/lib3ddevil1 into master

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scuti 2018-04-19 04:42:22 -07:00 committed by Gitea
commit 2977274f93
3 changed files with 73 additions and 6 deletions
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17
demo/common.h
View File

@ -44,10 +44,23 @@ void write(const char *filename,
written = fwrite(t, sizeof(unsigned char), size, out);
fclose(out);
if (written == 0) {
perror("texture write error");
perror("write error");
}
}
}
void append(const char *filename, const char *t, unsigned size) {
if (filename == NULL) {
return;
}
unsigned int written = 0;
FILE *out = fopen(filename, "ab");
if (out != NULL) {
written = fwrite(t, sizeof(unsigned char), size, out);
fclose(out);
if (written == 0) {
perror("write error");
}
}
}

59
demo/extractmesh.c
View File

@ -1,6 +1,61 @@
#include "common.h"
#include "devil1geo.h"
void writemesh(const struct MeshHeader *mh,
const struct Mesh *m,
const char *filename,
unsigned int i) {
char *fn = (char*)malloc(strlen(filename) + 3 + 4);
sprintf(fn, "%s_%d.msh", filename, i);
struct Header h = {
1,
0,
0,
0,
0xCCCCCCCC,
0
};
// mesh header offset batches need to be changed for compability with parsing.
struct MeshHeader newmh = *(mh);
newmh.offsetBatches = sizeof(struct Header) + sizeof(struct MeshHeader);
write(fn, (char*)(&h), sizeof(struct Header));
append(fn, (char*)(&newmh), sizeof(struct MeshHeader));
// batch data the same treatment.
struct BatchData * newBatches = malloc(newmh.numBatch * sizeof(struct BatchData));
uint64_t previousBatch = 0;
for (int i = 0; i < newmh.numBatch; i++) {
newBatches[i] = (m -> b) -> bd[i];
unsigned int nVertices = m -> b -> bd[i].numVertex;
if (previousBatch == 0) {
newBatches[i].offsetPositions = newmh.offsetBatches + ( newmh.numBatch * sizeof(struct BatchData));
}
else {
newBatches[i].offsetPositions = previousBatch;
}
newBatches[i].offsetNormals = newBatches[i].offsetPositions + (sizeof(struct Coordinate) * nVertices);
newBatches[i].offsetUVs = newBatches[i].offsetNormals + (sizeof(struct Coordinate) * nVertices);
newBatches[i].offsetBoneIndexes = newBatches[i].offsetUVs + (sizeof(struct UVs) * nVertices);
newBatches[i].offsetBoneWeights = newBatches[i].offsetBoneIndexes + (sizeof(struct BoneIndexes) * nVertices);
append(fn, (char*)(&newBatches[i]), sizeof(struct BatchData));
previousBatch = newBatches[i].offsetBoneWeights + (sizeof(struct BoneWeights) * nVertices);;
}
for (int i = 0; i < newmh.numBatch; i++) {
unsigned int nVertices = m -> b -> bd[i].numVertex;
append(fn, (char*)(m -> b[i].vd.positions), sizeof(struct Coordinate) * nVertices);
append(fn, (char*)(m -> b[i].vd.normals), sizeof(struct Coordinate) * nVertices);
append(fn, (char*)(m -> b[i].vd.u), sizeof(struct UVs) * nVertices);
append(fn, (char*)(m -> b[i].vd.bi), sizeof(struct BoneIndexes) * nVertices);
append(fn, (char*)(m -> b[i].vd.bw), sizeof(struct BoneWeights) * nVertices);
}
free(newBatches);
free(fn);
}
void extractmeshes(const char *filedata,
unsigned int filesize,
const char *filename) {
@ -17,7 +72,7 @@ void extractmeshes(const char *filedata,
m.b = (struct Batch*)malloc(sizeof(struct Batch) * (mh -> numBatch));
if (m.b != NULL) {
DEVIL1GEO.getmesh(&m, i, filedata);
// do something with mesh e.g write to file.
writemesh(mh, &m, filename, i);
free(m.b);
}
} // end for
@ -28,8 +83,6 @@ int main(int argc, char ** argv) {
char *f = argv[1];
unsigned int bufsize = 0;
char *buffer = loadfile(f, &bufsize);
// unpackpld(buffer, bufsize, f);
// exporttextures(buffer, bufsize, f);
extractmeshes(buffer, bufsize, f);
free(buffer);
return 0;

3
src/devil1geo.c
View File

@ -113,7 +113,7 @@ static bool getmesh(struct Mesh *m,
for (j = 0; j < mh -> numBatch; j++) {
unsigned int offset = mh->offsetBatches + j * sizeof(struct BatchData);
getmeshbatch(&b, offset, filedata);
printmeshbatch(&b);
// printmeshbatch(&b);
m -> b[j] = b;
}
done = true;
@ -121,3 +121,4 @@ static bool getmesh(struct Mesh *m,
return done;
}