void AHair::UpdateSegment(AHairSegment* InSegment)
{
if (!InSegment || InSegment->Spline->GetNumberOfSplinePoints() < 2) return;
InSegment->ProceduralMesh->ClearAllMeshSections();
ClearMeshData(InSegment);
// Update node rotations to match spline
for (int i = 0; i < InSegment->Spline->GetNumberOfSplinePoints(); i++)
{
FRotator Rot = InSegment->Spline->GetRotationAtSplinePoint(i, ESplineCoordinateSpace::World);
InSegment->Nodes[i]->SetActorRotation(Rot);
}
// Populate new data
if (!MiddleMeshData) return;
for (int i = 0; i <= InSegment->NumSegments; i++)
{
float TotalDistance = InSegment->Spline->GetSplineLength();
float Distance = (TotalDistance / InSegment->NumSegments)*i;
float NextDistance = (TotalDistance / InSegment->NumSegments)*i+1;
AssignPositions(InSegment->Spline->GetLocationAtDistanceAlongSpline(Distance, ESplineCoordinateSpace::Local),
InSegment->Spline->GetLocationAtDistanceAlongSpline(NextDistance, ESplineCoordinateSpace::Local));
//Weight = 1.0f - Distance / TotalDistance;
float Displacement = InSegment->FallOff - 1.0f;
Weight = 1.0f + (Distance / TotalDistance)*Displacement;
// Interpolate distance to closest spline point index
float Delta = ((InSegment->Spline->GetNumberOfSplinePoints() - 1)*1.0f) / (InSegment->NumSegments*1.0f);
int Index = FGenericPlatformMath::RoundToInt(i*Delta);
if (i == 0)
{
AddVertices(0, MiddleMeshData->Vertices, InSegment, Distance);
AddTriangles(InSegment);
AddUVs(InSegment, true);
}
else
{
AddVertices(2, MiddleMeshData->Vertices, InSegment, Distance);
AddTriangles(InSegment);
AddUVs(InSegment, false);
}
}
// Create mesh
InSegment->ProceduralMesh->CreateMeshSection(0, InSegment->ProceduralMeshData->Vertices,
InSegment->ProceduralMeshData->Triangles,
TArray<FVector>(),
InSegment->ProceduralMeshData->UVs,
TArray<FColor>(), TArray<FProcMeshTangent>(), true);
// Duplicate for outline as custom depth not available for translucent materials
InSegment->OutlineMesh->CreateMeshSection(0, InSegment->ProceduralMeshData->Vertices,
InSegment->ProceduralMeshData->Triangles,
TArray<FVector>(),
InSegment->ProceduralMeshData->UVs,
TArray<FColor>(), TArray<FProcMeshTangent>(), true);
}
/*
* Assign positions starting at a particular value.
*/
static int AssignPositions(TreeCCNode *node, int posn)
{
TreeCCNode *child;
/* Assign positions to the children */
child = node->firstChild;
while(child != 0)
{
posn = AssignPositions(child, posn);
child = child->nextSibling;
}
/* Assign a position to this node */
node->position = posn;
return posn + 1;
}
App::App(std::wstring app_name, int window_width, int window_height):
m_background(L"images/background.bmp")
{
if (!m_positions_assigned) {
AssignPositions();
m_positions_assigned = true;
}
srand(time(NULL));
m_app_name = app_name;
m_window_width = window_width;
m_window_height = window_height;
// Making 5 bunnies initially
for (int i = 0; i < 5; i++) {
Bunny* temp_bunny = new Bunny;
temp_bunny->set_pos(FindFreePos());
m_bunnies.push_back(temp_bunny);
}
}
int TreeCCNodeAssignPositions(TreeCCNode *node)
{
return AssignPositions(node, 0);
}