mirror of
https://notabug.org/scuti/lib3ddevil1
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133 lines
4.2 KiB
Plaintext
133 lines
4.2 KiB
Plaintext
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devil1geo.h / devil1geo.c
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Handles files containing geometry.
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Functions
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All functions are static but exposed by a function pointer in a constant
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struct called DEVIL1GEO. For example, clients call functions using
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DEVIL1GEO.printheader(...);
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void printheader(struct Header*);
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Show attributes and values of a Header for the package.
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input: pointer to Header, pass by reference of a struct.
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Can not be NULL.
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void printmeshheader(struct MeshHeader*);
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Show attributes and values of a MeshHeader.
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input: pointer to MeshHeader, pass by reference of a struct.
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Can not be NULL.
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void printbatch(struct Batch*);
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Show attribute and values of a Batch and three sample position
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coordinates.
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input: pointer to Batch, pass by reference of a struct.
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Can not be NULL.
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void printcoordinate(struct Coordinate*, unsigned int);
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Show a specified quantity of Coordinates.
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input:
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pointer to array of Coordinates.
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Can not be NULL.
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unsigned int, for quantity of coordinates to be printed.
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bool getmeshheader(struct MeshHeader**,
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unsigned int,
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const char * const);
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Retrives the i-th MeshHeader in a buffer.
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input:
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Pointer of a pointer to MeshHeader.
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Pass by reference of a pointer to the function.
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The pointer of MeshHeader can be NULL and will be set to point to
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a region in the buffer.
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unsigned int, the i-th instance of MeshHeader in the buffer.
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const char*, the buffer containing the whole mesh package.
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output:
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true on success.
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false when failing checks against segmentation faults.
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If parameter 'struct MeshHeader**' is NULL.
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If parameter 'const char*' is NULL.
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bool getbatch(struct Batch*,
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unsigned int offset,
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const char * const);
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Retrives the i-th Batch in a buffer.
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input:
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Pointer to a Batch.
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Pass by reference of a struct to the function.
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Can not be NULL.
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unsigned int, the i-th instance of Batch in the buffer.
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const char*, the buffer containing the whole mesh package.
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output:
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true on success.
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false when failing checks against segmentation faults.
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If parameter 'struct Batch*' is NULL.
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If parameter 'const char*' is NULL.
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bool getmesh(struct Mesh*,
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unsigned int,
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const char*,
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unsigned int);
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Retrives the i-th Mesh in a buffer.
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input:
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Pointer to mesh.
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Pass by reference of a struct to the function.
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unsigned int, the i-th instance of Mesh in the buffer.
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const char*, the buffer containing the whole mesh package.
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output:
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true on success.
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false when failing checks against segmentation faults.
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If parameter 'struct Mesh*' is NULL.
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If attribute 'b' of parameter 'struct Mesh' is NULL.
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if parameter 'const char*' is NULL.
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When file size is detected to be too small for a given i-th
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Mesh.
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Example logic to interact with all meshes:
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{
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// After the file has been read in.
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// Need to know how many meshes are in the file.
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struct Header *h = (struct Header*)filedata;
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// Need to know about a specific mesh (how many batches).
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struct MeshHeader *mh = NULL;
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// Need to hold information about mesh.
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struct Mesh m;
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// As a precaution - empty for now.
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m.b = NULL;
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unsigned int i;
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for (i = 0; i < h -> numMesh; i++) {
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DEVIL1GEO.getmeshheader(&mh, i, filedata);
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// Allocate space to hold batch data.
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m.b = (struct Batch*)malloc(sizeof(struct Batch) * (mh -> numBatch));
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if (m.b != NULL) {
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DEVIL1GEO.getmesh(&m, i, filedata, filesize);
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// Do whatever you want with the mesh.
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free(m.b);
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}
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}
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