wxXmlProperty *nwxXmlContainer::CreateProperties(int *pnCount)
{
int nCount = 0;
wxString sValue;
wxXmlProperty *pFirst(NULL);
wxXmlProperty *pLast(NULL);
wxXmlProperty *pThis(NULL);
PERSISTstr *pPERSIST;
for(mapPERSISTstr::iterator itr = m_mapAttr.begin();
itr != m_mapAttr.end();
++itr)
{
pPERSIST = itr->second;
if(pPERSIST->pPersist->CreateString(&sValue,pPERSIST->pObj))
{
pThis = new wxXmlProperty(pPERSIST->sName,sValue);
++nCount;
if(pLast == NULL)
{
// begin list
pFirst = pThis;
pLast = pThis;
}
else
{
// append list
pLast->SetNext(pThis);
pLast = pThis;
}
}
}
if(pnCount != NULL)
{
*pnCount = nCount;
}
return pFirst;
}
// Generate a lathe by rotating the given polyline
void AProceduralLatheActor::GenerateLathe(const TArray<FVector>& InPoints, const int InSegments, TArray<FProceduralMeshTriangle>& OutTriangles)
{
UE_LOG(LogClass, Log, TEXT("AProceduralLatheActor::Lathe POINTS %d"), InPoints.Num());
TArray<FVector> verts;
// precompute some trig
float angle = FMath::DegreesToRadians(360.0f / InSegments);
float sinA = FMath::Sin(angle);
float cosA = FMath::Cos(angle);
/*
This implementation is rotation around the X Axis, other formulas below
Z Axis Rotation
x' = x*cos q - y*sin q
y' = x*sin q + y*cos q
z' = z
X Axis Rotation
y' = y*cos q - z*sin q
z' = y*sin q + z*cos q
x' = x
Y Axis Rotation
z' = z*cos q - x*sin q
x' = z*sin q + x*cos q
y' = y
*/
// Working point array, in which we keep the rotated line we draw with
TArray<FVector> wp;
for(int i = 0; i < InPoints.Num(); i++)
{
wp.Add(InPoints[i]);
}
// Add a first and last point on the axis to complete the OutTriangles
FVector p0(wp[0].X, 0, 0);
FVector pLast(wp[wp.Num() - 1].X, 0, 0);
FProceduralMeshTriangle tri;
// for each segment draw the OutTriangles clockwise for normals pointing out or counterclockwise for the opposite (this here does CW)
for(int segment = 0; segment<InSegments; segment++)
{
for(int i = 0; i<InPoints.Num() - 1; i++)
{
FVector p1 = wp[i];
FVector p2 = wp[i + 1];
FVector p1r(p1.X, p1.Y*cosA - p1.Z*sinA, p1.Y*sinA + p1.Z*cosA);
FVector p2r(p2.X, p2.Y*cosA - p2.Z*sinA, p2.Y*sinA + p2.Z*cosA);
static const FColor Red(255, 51, 51);
tri.Vertex0.Color = Red;
tri.Vertex1.Color = Red;
tri.Vertex2.Color = Red;
if(i == 0)
{
tri.Vertex0.Position = p1;
tri.Vertex1.Position = p0;
tri.Vertex2.Position = p1r;
OutTriangles.Add(tri);
}
tri.Vertex0.Position = p1;
tri.Vertex1.Position = p1r;
tri.Vertex2.Position = p2;
OutTriangles.Add(tri);
tri.Vertex0.Position = p2;
tri.Vertex1.Position = p1r;
tri.Vertex2.Position = p2r;
OutTriangles.Add(tri);
if(i == InPoints.Num() - 2)
{
tri.Vertex0.Position = p2;
tri.Vertex1.Position = p2r;
tri.Vertex2.Position = pLast;
OutTriangles.Add(tri);
wp[i + 1] = p2r;
}
wp[i] = p1r;
}
}
}
void AQuadTree::Lathe(const TArray<FVector>& points, TArray<FGeneratedMeshTriangle>& triangles, int32 segments)
{
UE_LOG(LogClass, Log, TEXT("AQuadTree::Lathe POINTS %d"), points.Num());
// precompute some trig
float angle = FMath::DegreesToRadians(360.0f / segments);
float sinA = FMath::Sin(angle);
float cosA = FMath::Cos(angle);
//This implementation is rotation around the X Axis, other formulas below
//Z Axis Rotation
//x' = x*cos q - y*sin q
//y' = x*sin q + y*cos q
//z' = z
//X Axis Rotation
//y' = y*cos q - z*sin q
//z' = y*sin q + z*cos q
//x' = x
//Y Axis Rotation
//z' = z*cos q - x*sin q
//x' = z*sin q + x*cos q
//y' = y
//Working point array, in which we keep the rotated line we draw with
TArray<FVector> wp;
for (int i = 0; i < points.Num(); i++) {
wp.Add(points[i]);
}
// Add a first and last point on the axis to complete the triangles
FVector p0(wp[0].X, 0, 0);
FVector pLast(wp[wp.Num() - 1].X, 0, 0);
FGeneratedMeshTriangle tri;
//for each segment draw the triangles clockwise for normals pointing out or counterclockwise for the opposite (this here does CW)
for (int segment = 0; segment<segments; segment++) {
for (int i = 0; i<points.Num() - 1; i++) {
FVector p1 = wp[i];
FVector p2 = wp[i + 1];
FVector p1r(p1.X, p1.Y*cosA - p1.Z*sinA, p1.Y*sinA + p1.Z*cosA);
FVector p2r(p2.X, p2.Y*cosA - p2.Z*sinA, p2.Y*sinA + p2.Z*cosA);
if (i == 0) {
tri.Vertex0 = p1;
tri.Vertex1 = p0;
tri.Vertex2 = p1r;
triangles.Add(tri);
}
tri.Vertex0 = p1;
tri.Vertex1 = p1r;
tri.Vertex2 = p2;
triangles.Add(tri);
tri.Vertex0 = p2;
tri.Vertex1 = p1r;
tri.Vertex2 = p2r;
triangles.Add(tri);
if (i == points.Num() - 2) {
tri.Vertex0 = p2;
tri.Vertex1 = p2r;
tri.Vertex2 = pLast;
triangles.Add(tri);
wp[i + 1] = p2r;
}
wp[i] = p1r;
}
}
}
