static BOOL ParseVertexUVs(char **data, Mesh3D *mesh) {
FLOAT scale_u = SPFlt(16);
FLOAT scale_v = SPFlt(16);
UVCoord *uv;
WORD n;
if (!(ReadShort(data, &n) && EndOfLine(data)))
return FALSE;
Log("[3D] Mesh has %ld uv coordinates\n", (LONG)n);
mesh->uv = MemAlloc(sizeof(Point2D) * n, MEMF_PUBLIC);
uv = mesh->uv ;
while (NextLine(data) && !MatchString(data, "@end")) {
FLOAT u, v;
if (!(ReadFloat(data, &u) && ReadFloat(data, &v) && EndOfLine(data)))
return FALSE;
uv->u = SPFix(SPMul(u, scale_u));
uv->v = SPFix(SPMul(v, scale_v));
uv++;
n--;
}
return n == 0;
}
static BOOL ParseVertices(char **data, Mesh3D *mesh) {
FLOAT scale = SPMul(mesh->scale, SPFlt(16));
Point3D *vertex;
WORD n;
if (!(ReadShort(data, &n) && EndOfLine(data)))
return FALSE;
Log("[3D] Mesh has %ld points\n", (LONG)n);
mesh->vertices = n;
mesh->vertex = MemAlloc(sizeof(Point3D) * n, MEMF_PUBLIC);
vertex = mesh->vertex;
while (NextLine(data) && !MatchString(data, "@end") && n > 0) {
FLOAT x, y, z;
if (!(ReadFloat(data, &x) && ReadFloat(data, &y) && ReadFloat(data, &z) &&
EndOfLine(data)))
return FALSE;
vertex->x = SPFix(SPMul(x, scale));
vertex->y = SPFix(SPMul(y, scale));
vertex->z = SPFix(SPMul(z, scale));
vertex++;
n--;
}
return n == 0;
}
__regargs BOOL ReadFloat(char **data, FLOAT *numptr) {
char *str = *data;
char c;
LONG p = 0, q = 1;
BOOL minus = FALSE, dot = FALSE;
/* Skip white spaces. */
if (!NextWord(&str))
return FALSE;
/* Read optional sign character. */
if (*str == '-')
str++, minus = TRUE;
/* Read at least one digit. */
c = *str;
if (!isdigit(c))
return FALSE;
while (1) {
if (!dot && c == '.') {
dot = TRUE;
} else if (!isdigit(c)) {
break;
} else {
p = p * 10 + digit(c);
if (dot)
q *= 10;
}
c = *(++str);
}
*data = str;
if (numptr)
*numptr = SPDiv(SPFlt(q), SPFlt(minus ? -p : p));
return TRUE;
}