void FrustumGrid::generateGridPlanes(Planes& xPlanes, Planes& yPlanes, Planes& zPlanes) {
xPlanes.resize(dims.x + 1);
yPlanes.resize(dims.y + 1);
zPlanes.resize(dims.z + 1);
float centerY = float(dims.y) * 0.5f;
float centerX = float(dims.x) * 0.5f;
for (int z = 0; z < (int) zPlanes.size(); z++) {
ivec3 pos(0, 0, z);
zPlanes[z] = glm::vec4(0.0f, 0.0f, 1.0f, -frustumGrid_clusterPosToEye(pos, vec3(0.0)).z);
}
for (int x = 0; x < (int) xPlanes.size(); x++) {
auto slicePos = frustumGrid_clusterPosToEye(glm::vec3((float)x, centerY, 0.0));
auto sliceDir = glm::normalize(slicePos);
xPlanes[x] = glm::vec4(sliceDir.z, 0.0, -sliceDir.x, 0.0);
}
for (int y = 0; y < (int) yPlanes.size(); y++) {
auto slicePos = frustumGrid_clusterPosToEye(glm::vec3(centerX, (float)y, 0.0));
auto sliceDir = glm::normalize(slicePos);
yPlanes[y] = glm::vec4(0.0, sliceDir.z, -sliceDir.y, 0.0);
}
}
void updatePlanesLookup()
{
delete [] self()._lookupPlanes;
self()._lookupPlanes = new Plane *[planes.size()];
Plane **ptr = self()._lookupPlanes;
for (Plane *p : planes)
{
*ptr++ = p;
}
}
void solve(Planes &CH)
{
// cout << CH.size() << endl;
int m;
// cin >> m;
scanf("%d", &m);
while (m--)
{
Point p;
cin >> p.x >> p.y >> p.z;
double ans = INF;
for (int i = 0; i < CH.size(); ++ i)
ans = min(ans, CH[i].dist2p(p));
// cout << ans << endl;
printf("%.4lf\n", ans);
}
}