void
TestLocalXform::testComparisonOperators()
{
USING_NK_NS
USING_NKHIVE_NS
LocalXform xform(vec3d(0.1, 0.2, 0.3));
LocalXform xform2(vec3d(0.1, 0.2, 0.3));
LocalXform xform3(vec3d(0.1, 0.1, 0.1));
CPPUNIT_ASSERT(xform == xform2);
CPPUNIT_ASSERT(xform != xform3);
CPPUNIT_ASSERT(xform2 != xform3);
CPPUNIT_ASSERT(xform3 != xform);
}
/**
* Determine if the current hitpoint is on a foreground or background
* tile.
*
* PARAMETERS:
* obj - tplane object
*
* RETURNS:
* 0 for background and 1 for foreground
*/
int tp_select(obj_t *obj) {
plane_t *plane = (plane_t *)obj->priv; // plane struct
tplane_t *tplane = (tplane_t *)plane->priv; // tplane struct
double *newhit = (double *)alloca(sizeof(double) * 3);
vec_diff3(plane->point, obj->hitloc, newhit);
xform3(tplane->rotmat, newhit, newhit);
// HACK! the 1000 is to take care of rouding error near boundries
int relx = (int) (1000 + newhit[0] / tplane->size[0]);
int rely = (int) (1000 + newhit[1] / tplane->size[1]);
int total = relx + rely;
#ifdef DEBUG_TPLANE
fprintf(stderr, "relx = %d, rely = %d, mod = %d\n", relx, rely, total % 2);
#endif
return total % 2;
}
