static csVector3 FindBiggestHorizontalMovement (
const csBox3& box1, const csReversibleTransform& trans1,
const csBox3& box2, const csReversibleTransform& trans2)
{
// The origin of the second box in the 3D space of the first box.
csVector3 o2Tr = trans1.Other2This (trans2.GetOrigin ());
// Transformed bounding box.
csBox3 box2Tr;
box2Tr.StartBoundingBox (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (0))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (1))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (2))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (3))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (4))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (5))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (6))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (7))));
float xr = o2Tr.x - box1.MaxX () + box2Tr.MinX ();
float xl = box1.MinX () - o2Tr.x - box2Tr.MaxX ();
float zr = o2Tr.z - box1.MaxZ () + box2Tr.MinZ ();
float zl = box1.MinZ () - o2Tr.z - box2Tr.MaxZ ();
csVector3 newpos = trans2.GetOrigin ();
if (xr >= xl && xr >= zr && xr >= zl)
newpos = trans1.This2Other (o2Tr + csVector3 (-xr, 0, -o2Tr.z));
else if (xl >= xr && xl >= zr && xl >= zl)
newpos = trans1.This2Other (o2Tr + csVector3 (xl, 0, -o2Tr.z));
else if (zr >= xl && zr >= xr && zr >= zl)
newpos = trans1.This2Other (o2Tr + csVector3 (-o2Tr.x, 0, -zr));
else if (zl >= xl && zl >= xr && zl >= zr)
newpos = trans1.This2Other (o2Tr + csVector3 (-o2Tr.x, 0, zl));
return newpos;
}
int csBox3::Adjacent (const csBox3 &other, float epsilon) const
{
if (AdjacentX (other, epsilon))
{
if (other.MaxX () > MaxX ())
return CS_BOX_SIDE_X;
else
return CS_BOX_SIDE_x;
}
if (AdjacentY (other, epsilon))
{
if (other.MaxY () > MaxY ())
return CS_BOX_SIDE_Y;
else
return CS_BOX_SIDE_y;
}
if (AdjacentZ (other, epsilon))
{
if (other.MaxZ () > MaxZ ())
return CS_BOX_SIDE_Z;
else
return CS_BOX_SIDE_z;
}
return -1;
}
int csBox3::Adjacent (const csBox3& other) const
{
if (AdjacentX (other))
{
if (other.MaxX () > MaxX ()) return BOX_SIDE_X;
else return BOX_SIDE_x;
}
if (AdjacentY (other))
{
if (other.MaxY () > MaxY ()) return BOX_SIDE_Y;
else return BOX_SIDE_y;
}
if (AdjacentZ (other))
{
if (other.MaxZ () > MaxZ ()) return BOX_SIDE_Z;
else return BOX_SIDE_z;
}
return -1;
}
void csMeshWrapper::GetFullBBox (csBox3& box)
{
box = GetObjectModel ()->GetObjectBoundingBox ();
csMovable* mov = &movable;
while (mov)
{
if (!mov->IsTransformIdentity ())
{
const csReversibleTransform& trans = mov->GetTransform ();
csBox3 b (trans.This2Other (box.GetCorner (0)));
b.AddBoundingVertexSmart (trans.This2Other (box.GetCorner (1)));
b.AddBoundingVertexSmart (trans.This2Other (box.GetCorner (2)));
b.AddBoundingVertexSmart (trans.This2Other (box.GetCorner (3)));
b.AddBoundingVertexSmart (trans.This2Other (box.GetCorner (4)));
b.AddBoundingVertexSmart (trans.This2Other (box.GetCorner (5)));
b.AddBoundingVertexSmart (trans.This2Other (box.GetCorner (6)));
b.AddBoundingVertexSmart (trans.This2Other (box.GetCorner (7)));
box = b;
}
mov = ((csMovable*)mov)->GetParent ();
}
}
csBox3 csReversibleTransform::This2Other (const csBox3 &box) const
{
if (m_t2o.IsIdentity())
{
csBox3 newBox (box);
newBox.SetCenter (This2Other (box.GetCenter()));
return newBox;
}
else
{
const csVector3 minA = box.Min ();
const csVector3 maxA = box.Max ();
csVector3 minB (v_o2t);
csVector3 maxB (v_o2t);
for (size_t i = 0; i < 3; ++i)
{
const csVector3 row = m_t2o.Row (i);
for (size_t j = 0; j < 3; ++j)
{
float a = row[j] * minA[j];
float b = row[j] * maxA[j];
if (a < b)
{
minB[i] += a;
maxB[i] += b;
}
else
{
minB[i] += b;
maxB[i] += a;
}
}
}
return csBox3 (minB, maxB);
}
}
void csMeshOnTexture::ScaleCamera (iMeshWrapper* mesh, int txtw, int txth)
{
UpdateView (txtw, txth);
const csBox3 mesh_box = mesh->GetWorldBoundingBox ();
const csVector3 mesh_center = mesh_box.GetCenter ();
const iPerspectiveCamera* camera = view->GetPerspectiveCamera ();
const float aspect = camera->GetFOV ();
const float shift_x = camera->GetShiftX ();
const float shift_y = camera->GetShiftY ();
int i;
float maxz = -100000000.0f;
for (i = 0 ; i < 8 ; i++)
{
csVector3 corner = mesh_box.GetCorner (i) - mesh_center;
float z = (corner.x * aspect) / (1.0f - shift_x);
if (z < 0) z = (corner.x * aspect) / (float (txtw) - shift_x);
z += corner.z;
if (z > maxz) maxz = z;
z = (corner.y * aspect) / (1.0f - shift_y);
if (z < 0) z = (corner.y * aspect) / (float (txth) - shift_y);
z += corner.z;
if (z > maxz) maxz = z;
}
csVector3 cam_pos = mesh_center;
cam_pos.z -= maxz;
for (i = 0 ; i < 8 ; i++)
{
csVector3 corner = mesh_box.GetCorner (i) - cam_pos;
csVector2 p = view->GetCamera()->Perspective (corner);
}
view->GetCamera()->GetTransform ().Identity ();
view->GetCamera()->GetTransform ().SetOrigin (cam_pos);
}
bool csBox3::AdjacentZ (const csBox3& other) const
{
if (ABS (other.MinZ () - MaxZ ()) < SMALL_EPSILON ||
ABS (other.MaxZ () - MinZ ()) < SMALL_EPSILON)
{
if (MaxX () < other.MinX () || MinX () > other.MaxX ()) return false;
if (MaxY () < other.MinY () || MinY () > other.MaxY ()) return false;
return true;
}
return false;
}
bool csBox3::AdjacentZ (const csBox3 &other, float epsilon) const
{
if (
ABS (other.MinZ () - MaxZ ()) < epsilon ||
ABS (other.MaxZ () - MinZ ()) < epsilon)
{
if (MaxX () < other.MinX () || MinX () > other.MaxX ()) return false;
if (MaxY () < other.MinY () || MinY () > other.MaxY ()) return false;
return true;
}
return false;
}
void csBox3::ManhattanDistance (const csBox3 &other, csVector3 &dist) const
{
if (other.MinX () >= MaxX ())
dist.x = other.MinX () - MaxX ();
else if (MinX () >= other.MaxX ())
dist.x = MinX () - other.MaxX ();
else
dist.x = 0;
if (other.MinY () >= MaxY ())
dist.y = other.MinY () - MaxY ();
else if (MinY () >= other.MaxY ())
dist.y = MinY () - other.MaxY ();
else
dist.y = 0;
if (other.MinZ () >= MaxZ ())
dist.z = other.MinZ () - MaxZ ();
else if (MinZ () >= other.MaxZ ())
dist.z = MinZ () - other.MaxZ ();
else
dist.z = 0;
}
float csHazeMeshObject::GetScreenBoundingBox (long cameranr,
long movablenr, float fov, float sx, float sy,
const csReversibleTransform& trans, csBox2& sbox, csBox3& cbox)
{
csVector2 oneCorner;
GetTransformedBoundingBox (cameranr, movablenr, trans, cbox);
// if the entire bounding box is behind the camera, we're done
if ((cbox.MinZ () < 0) && (cbox.MaxZ () < 0))
{
return -1;
}
// Transform from camera to screen space.
if (cbox.MinZ () <= 0)
{
// Sprite is very close to camera.
// Just return a maximum bounding box.
sbox.Set (-10000, -10000, 10000, 10000);
}
else
{
Perspective (cbox.Max (), oneCorner, fov, sx, sy);
sbox.StartBoundingBox (oneCorner);
csVector3 v (cbox.MinX (), cbox.MinY (), cbox.MaxZ ());
Perspective (v, oneCorner, fov, sx, sy);
sbox.AddBoundingVertexSmart (oneCorner);
Perspective (cbox.Min (), oneCorner, fov, sx, sy);
sbox.AddBoundingVertexSmart (oneCorner);
v.Set (cbox.MaxX (), cbox.MaxY (), cbox.MinZ ());
Perspective (v, oneCorner, fov, sx, sy);
sbox.AddBoundingVertexSmart (oneCorner);
}
return cbox.MaxZ ();
}
/*
* In order to update the navigation structure, we have to update the navigation meshes for the
* affected area, as well as the high level graph. When a navmesh gets updated, a path between
* two portals may be closed or opened, and we have to add or remove edges to the graph to
* account for this.
*/
bool celHNavStruct::Update (const csBox3& boundingBox, iSector* sector)
{
if (!sector)
{
bool ret;
csHash<csRef<iCelNavMesh>, csPtrKey<iSector> >::GlobalIterator it = navMeshes.GetIterator();
csPtrKey<iSector> key;
while (it.HasNext())
{
csRef<iCelNavMesh> navMesh = it.Next(key);
csBox3 navMeshBoundingBox = navMesh->GetBoundingBox();
if (boundingBox.Overlap(navMeshBoundingBox))
{
ret = Update(boundingBox, key);
if (!ret)
{
return false;
}
}
}
}
csPtrKey<iSector> key = sector;
csRef<iCelNavMesh> navMesh = navMeshes.Get(key, 0);
navMesh->Update(boundingBox);
// Update high level graph
int nNodes = hlGraph->GetNodeCount();
csArray<csRef<iCelNode> > sameSectorNodes(hlGraph->GetNodeCount());
uint sectorId = sector->QueryObject()->GetID();
int sameSectorSize = 0;
for (int i = 0; i < nNodes; ++i)
{
csRef<iCelNode> node = hlGraph->GetNode(i);
uint nodeSectorId = node->GetMapNode()->GetSector()->QueryObject()->GetID();
if (nodeSectorId == sectorId)
{
sameSectorNodes.Push(node);
sameSectorSize++;
}
}
for (int i = 0; i < sameSectorSize; ++i)
{
csRef<iCelNode> node = sameSectorNodes[i];
// Check edges from the high level graph that are on the updated sector, to update weights and
// see if any of them was obstructed.
int nEdges = node->GetEdgeCount();
for (int j = nEdges - 1; j > 0; j--)
{
csRef<iCelEdge> edge = node->GetEdge(j);
csRef<iCelNode> node2 = edge->GetSuccessor();
uint edgeSectorId = node2->GetMapNode()->GetSector()->QueryObject()->GetID();
if (edgeSectorId == sectorId)
{
csRef<iCelNavMeshPath> path = navMesh->ShortestPath(node->GetPosition(), node2->GetPosition(), 256);
if (path->GetNodeCount() > 0)
{
csVector3 last;
path->GetLast(last);
csVector3 box = parameters->GetPolygonSearchBox();
// Check if last calculated point is within reach of the last given point
if (ABS(last[0] - node2->GetPosition()[0]) <= box[0] &&
ABS(last[1] - node2->GetPosition()[1]) <= box[1] &&
ABS(last[2] - node2->GetPosition()[2]) <= box[2])
{
float length = path->Length();
edge->SetWeight(length);
}
else
{
node->RemoveEdge(j);
}
}
else
{
node->RemoveEdge(j);
}
}
}
// Check if any edges need to be added to the high level graph (a path might have opened)
for (int j = i + 1; j < sameSectorSize; ++j)
{
csRef<iCelNode> node2 = sameSectorNodes[j];
bool found = false;
for (int k = 0; j < nEdges; ++k)
{
if (node2 == node->GetEdge(k)->GetSuccessor())
{
found = true;
break;
}
}
if (!found)
{
csRef<iCelNavMeshPath> path = navMesh->ShortestPath(node->GetPosition(), node2->GetPosition(), 256);
if (path->GetNodeCount() > 0)
{
csVector3 last;
path->GetLast(last);
csVector3 box = parameters->GetPolygonSearchBox();
// Check if last calculated point is within reach of the last given point
if (ABS(last[0] - node2->GetPosition()[0]) <= box[0] &&
ABS(last[1] - node2->GetPosition()[1]) <= box[1] &&
ABS(last[2] - node2->GetPosition()[2]) <= box[2])
{
float length = path->Length();
hlGraph->AddEdge(node, node2, true, length);
hlGraph->AddEdge(node2, node, true, length);
}
}
}
}
}
return true;
}
void HeightMapGen::CreateHeightmap (int heightmap_res, iCollideSystem* cdsys,
iSector* sector, csRGBpixel* hmap_dst,
float* height_dst,
const csBox3& box)
{
csPrintf ("Creating heightmap...\n"); fflush (stdout);
float dx = (box.MaxX () - box.MinX () - 0.2) / float (heightmap_res-1);
float dz = (box.MaxZ () - box.MinZ () - 0.2) / float (heightmap_res-1);
for (int z = 0 ; z < heightmap_res ; z++)
{
for (int x = 0 ; x < heightmap_res ; x++)
{
csVector3 start, end;
start.x = box.MinX () + (float)x * dx + 0.1;
start.y = box.MaxY () + 10.0;
start.z = box.MinZ () + (heightmap_res-z-1) * dz + 0.1;
end = start;
end.y = box.MinY () - 10.0;
csVector3 isect;
//mesh->HitBeamObject (start, end, isect, 0, 0);
csIntersectingTriangle closest_tri;
csColliderHelper::TraceBeam (cdsys, sector, start, end,
false, closest_tri, isect);
float y = (isect.y - box.MinY ()) / (box.MaxY () - box.MinY ());
if (y < 0) y = 0;
else if (y > 0.9999f) y = 0.9999f;
*height_dst++ = y;
y *= 256.0;
hmap_dst->Set (int (y), int (y), int (y));
hmap_dst++;
}
}
}
