void GetOcclusionsForFace(IntVector3 p, DirectionOrdinal face,
out int o0, out int o1, out int o2, out int o3)
{
// XXX can we store occlusion data to the Voxel?
var exp_data = s_cubeFaceInfo[(int)face].ExposionVectors;
var occ_data = s_cubeFaceInfo[(int)face].OcclusionVectors;
o0 = o1 = o2 = o3 = 0;
bool occ_edge2 = IsBlocker(p + occ_data[0]);
bool exp_edge2 = !IsBlocker(p + exp_data[0]);
for (int i = 0; i < 4; ++i)
{
bool occ_edge1 = occ_edge2;
bool occ_corner = IsBlocker(p + occ_data[i * 2 + 1]);
occ_edge2 = IsBlocker(p + occ_data[(i * 2 + 2) % 8]);
bool exp_edge1 = exp_edge2;
bool exp_corner = !IsBlocker(p + exp_data[i * 2 + 1]);
exp_edge2 = !IsBlocker(p + exp_data[(i * 2 + 2) % 8]);
int occlusion;
if (occ_edge1 && occ_edge2)
{
occlusion = -3;
}
else
{
occlusion = 0;
if (occ_edge1)
occlusion--;
else if (exp_edge1)
occlusion++;
if (occ_edge2)
occlusion--;
else if (exp_edge2)
occlusion++;
if (occ_corner)
occlusion--;
else if (exp_corner)
occlusion++;
}
switch (i)
{
case 0:
o0 = occlusion; break;
case 1:
o1 = occlusion; break;
case 2:
o2 = occlusion; break;
case 3:
o3 = occlusion; break;
default:
throw new Exception();
}
}
}
void GetOcclusionsForFace(IntVector3 p, DirectionOrdinal face,
out int o0, out int o1, out int o2, out int o3)
{
// XXX can we store occlusion data to the Voxel?
var exp_data = s_cubeFaceInfo[(int)face].ExposionVectors;
var occ_data = s_cubeFaceInfo[(int)face].OcclusionVectors;
o0 = o1 = o2 = o3 = 0;
bool occ_edge2 = IsBlocker(p + occ_data[0]);
bool exp_edge2 = !IsBlocker(p + exp_data[0]);
for (int i = 0; i < 4; ++i)
{
bool occ_edge1 = occ_edge2;
bool occ_corner = IsBlocker(p + occ_data[i * 2 + 1]);
occ_edge2 = IsBlocker(p + occ_data[(i * 2 + 2) % 8]);
bool exp_edge1 = exp_edge2;
bool exp_corner = !IsBlocker(p + exp_data[i * 2 + 1]);
exp_edge2 = !IsBlocker(p + exp_data[(i * 2 + 2) % 8]);
int occlusion;
if (occ_edge1 && occ_edge2)
{
occlusion = -3;
}
else
{
occlusion = 0;
if (occ_edge1)
{
occlusion--;
}
else if (exp_edge1)
{
occlusion++;
}
if (occ_edge2)
{
occlusion--;
}
else if (exp_edge2)
{
occlusion++;
}
if (occ_corner)
{
occlusion--;
}
else if (exp_corner)
{
occlusion++;
}
}
switch (i)
{
case 0:
o0 = occlusion; break;
case 1:
o1 = occlusion; break;
case 2:
o2 = occlusion; break;
case 3:
o3 = occlusion; break;
default:
throw new Exception();
}
}
}