void SpaceStation::Render(Graphics::Renderer *r, const Camera *camera, const vector3d &viewCoords, const matrix4x4d &viewTransform)
{
Body *b = GetFrame()->GetBody();
assert(b);
if (!b->IsType(Object::PLANET)) {
// orbital spaceport -- don't make city turds or change lighting based on atmosphere
RenderModel(r, camera, viewCoords, viewTransform);
r->GetStats().AddToStatCount(Graphics::Stats::STAT_SPACESTATIONS, 1);
} else {
// don't render city if too far away
if (viewCoords.LengthSqr() >= SQRMAXCITYDIST) {
return;
}
std::vector<Graphics::Light> oldLights;
Color oldAmbient;
SetLighting(r, camera, oldLights, oldAmbient);
if (!m_adjacentCity) {
m_adjacentCity = new CityOnPlanet(static_cast<Planet*>(b), this, m_sbody->GetSeed());
}
m_adjacentCity->Render(r, camera->GetContext()->GetFrustum(), this, viewCoords, viewTransform);
RenderModel(r, camera, viewCoords, viewTransform, false);
ResetLighting(r, oldLights, oldAmbient);
r->GetStats().AddToStatCount(Graphics::Stats::STAT_GROUNDSTATIONS, 1);
}
}
void CollisionSpace::CollideRaySphere(const vector3d &start, const vector3d &dir, isect_t *isect)
{
if (sphere.radius > 0.0) {
/* Collide with lovely sphere! */
const vector3d v = start - sphere.pos;
const double b = -v.Dot(dir);
double det = (b * b) - v.LengthSqr() + (sphere.radius*sphere.radius);
if (det > 0) {
det = sqrt(det);
const double i1 = b - det;
const double i2 = b + det;
if (i2 > 0) {
/*if (i1 < 0) {
if (i2 < *dist) {
*dist = i2;
//retval = INPRIM;
retval = true;
}
}*/
if (i1 > 0) {
if (i1 < isect->dist) {
isect->dist = float(i1);
isect->triIdx = 0;
}
}
}
}
}
}
// returns acceleration due to gravity at that point
static double GetGravityAtPos(Frame *targframe, const vector3d &posoff)
{
Body *body = targframe->GetBodyFor();
if (!body || body->IsType(Object::SPACESTATION)) return 0;
double rsqr = posoff.LengthSqr();
return G * body->GetMass() / rsqr;
// inverse is: sqrt(G * m1m2 / thrust)
}
/// Calculates acceleration due to gravity at given position
static double GetGravityAtPos(Frame *target_frame, const vector3d &position)
{
Body *body = target_frame->GetBody();
if (!body || body->IsType(Object::SPACESTATION)) {
return 0.0;
}
return G * body->GetMass() / position.LengthSqr(); // inverse is: sqrt(G * m1m2 / thrust)
}