// Load mesh from PLY file
bool Mesh::loadFromFile(char* filename)
{
FILE* inFile = fopen(filename, "rt");
if (inFile == NULL)
{
char pszError[_MAX_FNAME + 1];
sprintf(pszError, "%s does not exist!\n", filename);
MessageBox(NULL, pszError, NULL, MB_ICONEXCLAMATION);
return FALSE;
}
// read header to PLY file
if (!readPlyHeader(inFile))
{
return false;
}
// read vertex data from PLY file
if (!readPlyVerts(inFile))
{
return false;
}
// read triangle data from PLY file
if (!readPlyTris(inFile))
{
return false;
}
fclose(inFile); // close the file
calcVertNormals();
return true;
}
Mesh::Mesh(const float pVertex[][3], const int nv, const int pTri[][3], const int ntri)
{
int i;
_numVerts = nv;
_numTriangles = ntri;
for (i=0; i<_numVerts; i++) {
const float x = pVertex[i][0];
const float y = pVertex[i][1];
const float z = pVertex[i][2];
vertex v(x, y, z);
v.setIndex(i);
_vlist.push_back(v);
}
for (i=0; i<_numTriangles; i++) {
const int v1 = pTri[i][0];
const int v2 = pTri[i][1];
const int v3 = pTri[i][2];
triangle t(this, v1, v2, v3);
t.setIndex(i);
_plist.push_back(t);
// update each vertex w/ its neighbors (vertrices & triangles)
_vlist[v1].addTriNeighbor(i);
_vlist[v1].addVertNeighbor(v2);
_vlist[v1].addVertNeighbor(v3);
_vlist[v2].addTriNeighbor(i);
_vlist[v2].addVertNeighbor(v1);
_vlist[v2].addVertNeighbor(v3);
_vlist[v3].addTriNeighbor(i);
_vlist[v3].addVertNeighbor(v1);
_vlist[v3].addVertNeighbor(v2);
}
calcVertNormals();
}
