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Changed: Allowed obj_loader to load different .obj face element configurations.

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New authorised .obj face elements configurations: v, v/t, v/vt/vn, v//vn
This commit is contained in:
Foxar
2020-12-17 13:33:22 +01:00
parent 552f2c6e4a
commit 12ef639516
1 changed files with 128 additions and 16 deletions
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src/engine/loaders/obj_loader.cpp
+128 -16
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@@ -71,31 +71,143 @@ void ObjLoader::load(MeshFrame *o_result, char *t_filename, float t_scale, u8 t_
}
else if (strcmp(lineHeader, "f") == 0)
{
int matches = fscanf(file, "%d/%d/%d %d/%d/%d %d/%d/%d\n",
&vertexIndex[0], &coordIndex[0], &normalIndex[0],
&vertexIndex[1], &coordIndex[1], &normalIndex[1],
&vertexIndex[2], &coordIndex[2], &normalIndex[2]);
if (matches != 9)
PRINT_ERR(".obj can't be read by this simple parser. Try exporting with other options");
int* x;
fpos_t start;
fgetpos(file,&start);
int matches = fscanf(file, "%d/%d/%d %d/%d/%d %d/%d/%d\n",x,x,x,x,x,x,x,x,x);
fsetpos(file,&start);
int newerMatches =0;
switch(matches)
{
/* Vs, VTs and VNs all set */
case 9:
{
printf("Case 9\n\n");
fscanf(file, "%d/%d/%d %d/%d/%d %d/%d/%d\n",
&vertexIndex[0], &coordIndex[0], &normalIndex[0],
&vertexIndex[1], &coordIndex[1], &normalIndex[1],
&vertexIndex[2], &coordIndex[2], &normalIndex[2]);
}
break;
/* Loaded only two digits (V, VT) succesfuly. Not setting VN. */
case 2:
{
printf("Case 2\n");
fscanf(file, "%d/%d/ %d/%d/ %d/%d/\n",
&vertexIndex[0], &coordIndex[0],
&vertexIndex[1], &coordIndex[1],
&vertexIndex[2], &coordIndex[2]);
}
break;
/* Only V set. Checking for existance of VT or VN. */
case 1:
{
printf("Case 1\n");
/* Check for existance of V/// configuration.. */
newerMatches = fscanf(file, "%d/// %d/// %d///\n",x,x,x);
fsetpos(file,&start);
if(newerMatches==3){
/* Configuration confirmed. */
fscanf(file, "%d/// %d/// %d///\n",&vertexIndex[0],&vertexIndex[1],&vertexIndex[2]);
}else
{
/* Failed, checking configuration V//VN */
newerMatches = fscanf(file, "%d//%d %d//%d %d//%d",x,x,x,x,x,x);
fsetpos(file,&start);
if(newerMatches==6){
/* Configuration confirmed. */
newerMatches = fscanf(file, "%d//%d %d//%d %d//%d",
&vertexIndex[0], &normalIndex[0],
&vertexIndex[1], &normalIndex[1],
&vertexIndex[2], &normalIndex[2]);
}
else{
/*Unknown configuration.*/
PRINT_ERR("Unknown .obj face for .obj file!");
printf("Obj file mentioned: \"%s\"\n",path);
}
}
}
default:
PRINT_ERR("Unknown faces format in .obj file!");
printf(" \"%s\"\n",path);
break;
}
/* if(ferror(file))
PRINT_ERR("Failed to load .obj file \"%s\".");
else
{
o_result->getMaterial(materialsI).setVertexFace(faceI, vertexIndex[0] - 1);
o_result->getMaterial(materialsI).setVertexFace(faceI + 1, vertexIndex[1] - 1);
o_result->getMaterial(materialsI).setVertexFace(faceI + 2, vertexIndex[2] - 1);
int result=0;
char line [128]={'\0'};
fgets(line,128,file);
o_result->getMaterial(materialsI).setSTFace(faceI, coordIndex[0] - 1);
o_result->getMaterial(materialsI).setSTFace(faceI + 1, coordIndex[1] - 1);
o_result->getMaterial(materialsI).setSTFace(faceI + 2, coordIndex[2] - 1);
//if(fscanf
}*/
switch(matches)
{
case 9:
{
o_result->getMaterial(materialsI).setVertexFace(faceI, vertexIndex[0] - 1);
o_result->getMaterial(materialsI).setVertexFace(faceI + 1, vertexIndex[1] - 1);
o_result->getMaterial(materialsI).setVertexFace(faceI + 2, vertexIndex[2] - 1);
o_result->getMaterial(materialsI).setSTFace(faceI, coordIndex[0] - 1);
o_result->getMaterial(materialsI).setSTFace(faceI + 1, coordIndex[1] - 1);
o_result->getMaterial(materialsI).setSTFace(faceI + 2, coordIndex[2] - 1);
o_result->getMaterial(materialsI).setNormalFace(faceI, normalIndex[0] - 1);
o_result->getMaterial(materialsI).setNormalFace(faceI + 1, normalIndex[1] - 1);
o_result->getMaterial(materialsI).setNormalFace(faceI + 2, normalIndex[2] - 1);
faceI += 3;
break;
}
case 2:
{
o_result->getMaterial(materialsI).setVertexFace(faceI, vertexIndex[0] - 1);
o_result->getMaterial(materialsI).setVertexFace(faceI + 1, vertexIndex[1] - 1);
o_result->getMaterial(materialsI).setVertexFace(faceI + 2, vertexIndex[2] - 1);
o_result->getMaterial(materialsI).setSTFace(faceI, coordIndex[0] - 1);
o_result->getMaterial(materialsI).setSTFace(faceI + 1, coordIndex[1] - 1);
o_result->getMaterial(materialsI).setSTFace(faceI + 2, coordIndex[2] - 1);
break;
}
case 1:
{
if(newerMatches==3)
{
o_result->getMaterial(materialsI).setVertexFace(faceI, vertexIndex[0] - 1);
o_result->getMaterial(materialsI).setVertexFace(faceI + 1, vertexIndex[1] - 1);
o_result->getMaterial(materialsI).setVertexFace(faceI + 2, vertexIndex[2] - 1);
}
else if(newerMatches==6)
{
o_result->getMaterial(materialsI).setVertexFace(faceI, vertexIndex[0] - 1);
o_result->getMaterial(materialsI).setVertexFace(faceI + 1, vertexIndex[1] - 1);
o_result->getMaterial(materialsI).setVertexFace(faceI + 2, vertexIndex[2] - 1);
o_result->getMaterial(materialsI).setNormalFace(faceI, normalIndex[0] - 1);
o_result->getMaterial(materialsI).setNormalFace(faceI + 1, normalIndex[1] - 1);
o_result->getMaterial(materialsI).setNormalFace(faceI + 2, normalIndex[2] - 1);
}
break;
}
o_result->getMaterial(materialsI).setNormalFace(faceI, normalIndex[0] - 1);
o_result->getMaterial(materialsI).setNormalFace(faceI + 1, normalIndex[1] - 1);
o_result->getMaterial(materialsI).setNormalFace(faceI + 2, normalIndex[2] - 1);
faceI += 3;
}
}
}
else
break;
}
o_result->calculateBoundingBoxes();
fclose(file);