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dumpllm.c is a program that can read Linden Labs Binary Mesh 1.0 files of type *.llm and dump them out as text
avatar_lower_body.dmp is the output of dumpllm.c for the avatar_lower_body.llm file, Ditto for avatar_upper_body.dmp from avatar_upper_body.llm. Don't use this on the LOD versions of the llm.c files, they are missing many sections.
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KayakerMagic
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//Program to read Linden Labs *.LLM (Linden Labs Binary Mesh 1.0) files
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//and dump them out converted to text
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//2020-07-21 Kayaker Magic, aka Mike Higgins
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#include<stdio.h>
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#include<math.h>
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#include<string.h>
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float f[256]; //buffers for reading various parts
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char s[2048];
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unsigned short int i[256];
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unsigned long int l[256];
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#define TITLE 24 //bytes in the heade that say what am I
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//note: there is an extra byte after the nul,
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//I read it to get to the right spot in file
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void dumpfloat(char *name,float *f,int num)
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{
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printf("%s",name);
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int loop;
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for (loop=0;loop<num;loop++)
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printf(" %12.6f",*f++);
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printf("\n");
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} //dumpfloat
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int main(int argc, char *argv [ ])
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{
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printf("dump llm file: %s\n",argv[1]);
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FILE *ftr = fopen(argv[1],"rb");
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unsigned int pos = ftell(ftr);
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fread(s,TITLE,1,ftr);
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printf("HEADER: %s\n",s);
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pos = ftell(ftr);
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int hasWeights=0;
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fread(&hasWeights,1,1,ftr); //flag indicating if weights section is in file
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printf("Has weights: %i\n",hasWeights);
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int hasDetailTexCoords=0; //flag indicating if extra detailed texture section in file
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fread(&hasDetailTexCoords,1,1,ftr);
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printf("Has Detail Tex Coords: %i\n",hasDetailTexCoords);
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//Note: I'm using numeric values instead of sizeof(float)
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//on purpose because that is how many bytes there are
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//in the file.
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fread(f,3,4,ftr); //the position (always 0,0,0 for avatar meshes?)
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dumpfloat("Position:",f,3);
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fread(f,3,4,ftr); //the rotation angles
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dumpfloat("Rotation:",f,3);
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int rotationOrder=0;
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fread(&rotationOrder,1,1,ftr); //rotation order
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printf("Rotation Order: %i\n",rotationOrder);
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fread(f,3,4,ftr); //scale
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dumpfloat("Scale: ",f,3);
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int numVertices=0; //number of vertices
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fread(&numVertices,1,2,ftr);
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printf("Number of Vertices: %i\n",numVertices);
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int loop;
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for (loop=0;loop<numVertices;loop++)
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{
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fread(f,4,3,ftr); //read one vertex and print it out
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printf(" <%9.6f,%9.6f,%9.6f>",f[0],f[1],f[2]);
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if ((loop%4)==3) //every so often
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printf("\n"); //break the line
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}
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printf("\nNormals:\n");
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for (loop=0;loop<numVertices;loop++)
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{
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fread(f,4,3,ftr); //read one normal and print it out
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printf(" <%9.6f,%9.6f,%9.6f>",f[0],f[1],f[2]);
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if ((loop%4)==3) //every so often
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printf("\n"); //break the line
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}
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printf("\nBinormals:\n");
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for (loop=0;loop<numVertices;loop++)
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{
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fread(f,4,3,ftr); //read one normal and print it out
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printf(" <%9.6f,%9.6f,%9.6f>",f[0],f[1],f[2]);
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if ((loop%4)==3) //every so often
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printf("\n"); //break the line
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}
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printf("\nTexture Coords:\n");
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for (loop=0;loop<numVertices;loop++)
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{
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fread(f,4,2,ftr); //read one co-ord and print it out
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printf(" <%9.6f,%9.6f>",f[0],f[1]);
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if ((loop%6)==5) //every so often
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printf("\n"); //break the line
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}
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printf("\nDetail Texture Coords:\n");
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if (hasDetailTexCoords)
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{
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for (loop=0;loop<numVertices;loop++)
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{
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fread(f,4,2,ftr); //read one co-ord and print it out
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printf(" <%9.6f,%9.6f>",f[0],f[1]);
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if ((loop%6)==5) //every so often
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printf("\n"); //break the line
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}
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}
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else
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printf(" NONE.");
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printf("\nWeights:\n");
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if (hasWeights)
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{
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for (loop=0;loop<numVertices;loop++)
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{
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fread(f,4,1,ftr); //read one weight and print it out
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printf(" %9.6f",f[0]);
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if ((loop%12)==11) //every so often
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printf("\n"); //break the line
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}
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}
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else
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printf(" NONE.");
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int numFaces=0;
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fread(&numFaces,2,1,ftr); //how many TRIANGLES
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printf("\nNumber of Triangles: %i\n",numFaces);
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for (loop=0;loop<numFaces;loop++)
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{
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fread(i,2,3,ftr); //each face is three vertexes
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printf(" (%4i,%4i,%4i)",i[0],i[1],i[2]);
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if ((loop%6)==5) //every so often
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printf("\n"); //break the line
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}
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int numSkinJoints=0; //Skin Joints
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fread(&numSkinJoints,2,1,ftr);
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printf("\nNumber of Skin Joints: %i\n",numSkinJoints);
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if (hasWeights)
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{
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s[64]=0; //add an extra nul just in case
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for (loop=0;loop<numSkinJoints;loop++)
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{
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fread(s,64,1,ftr);
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printf(" %s\n",s);
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}
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}
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printf("Morph Section:\n");
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while(fread(s,1,64,ftr)==64)
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{
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if (strcmp(s,"End Morphs")==0)
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{
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printf(" %s\n",s);
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break;
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}
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fread(&numVertices,4,1,ftr); //each named morph has some verticies
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printf(" %s has %i target_vertex,vertex,normal,binormal,uv\n",s,numVertices);
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int vindex=0;
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for (loop=0;loop<numVertices;loop++)
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{
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fread(&vindex,4,1,ftr); //each vertex has an index
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fread(f,4,11,ftr); //followed by 11 floats, a vector(3), normal(3), binomral(3) and UV(2)
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printf(" %4i:<%9.6f,%9.6f,%9.6f> <%9.6f,%9.6f,%9.6f> <%9.6f,%9.6f,%9.6f> (%9.6f,%9.6f)\n",
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vindex,f[0],f[1],f[2],f[3],f[4],f[5],f[6],f[7],f[8],f[9],f[10]);
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}
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}
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int numRemaps=0;
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fread(&numRemaps,4,1,ftr);
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printf("Vertex Remap Section has %i remaps\n",numRemaps);
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for (loop=0;loop<numRemaps;loop++)
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{
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int src=0;
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int dst=0;
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fread(&src,4,1,ftr); //why did they switch to 32bit ints?
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fread(&dst,4,1,ftr);
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printf(" (%4i,%4i)",src,dst);
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if ((loop%10)==9)
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printf("\n");
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}
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printf("\nI think I'm done...\n");
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fclose(ftr);
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return 0;
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}
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