public static void ApplyOrientation(this Geometry geo, OrientationPreset preset)
{
if (preset == OrientationPreset.XZ) return;
Orientation o = Orientation.Preset(preset);
for (int i = 0; i < geo.Vertices.Length; i++) {
Vector3 vertex = Vector3.zero;
vertex[(int)o.Horizontal] = geo.Vertices[i].x;
vertex[(int)o.Vertical] = geo.Vertices[i].z;
vertex[(int)o.Normal] = geo.Vertices[i].y;
geo.Vertices[i] = vertex;
if (i < geo.Normals.Length) {
Vector3 normal = Vector3.zero;
normal[(int)o.Horizontal] = geo.Normals[i].x;
normal[(int)o.Vertical] = geo.Normals[i].z;
normal[(int)o.Normal] = geo.Normals[i].y;
geo.Normals[i] = normal;
}
}
if (o.Normal == Axis.Z) {
for (int t = 0; t < geo.Triangles.Length; t += 3) {
int a = geo.Triangles[t ];
int b = geo.Triangles[t+1];
int c = geo.Triangles[t+2];
geo.Triangles[t+2] = a;
geo.Triangles[t+1] = b;
geo.Triangles[t ] = c;
}
}
}
public static Orientation FromPreset(OrientationPreset preset) {
switch (preset) {
case OrientationPreset.XY:
return new Orientation() { Horizontal = Axis.X, Vertical = Axis.Y, Normal = Axis.Z };
case OrientationPreset.ZY:
return new Orientation() { Horizontal = Axis.Z, Vertical = Axis.Y, Normal = Axis.X };
default:
return new Orientation() { Horizontal = Axis.X, Vertical = Axis.Z, Normal = Axis.Y };
}
}
public static Orientation Preset(OrientationPreset preset)
{
switch (preset) {
case OrientationPreset.XY:
return new Orientation() { Horizontal = Axis.X, Vertical = Axis.Y, Normal = Axis.Z };
case OrientationPreset.ZY:
return new Orientation() { Horizontal = Axis.Z, Vertical = Axis.Y, Normal = Axis.X };
default:
return new Orientation() { Horizontal = Axis.X, Vertical = Axis.Z, Normal = Axis.Y };
}
}
public static void ApplyOrientation(this Geometry geo, OrientationPreset preset) {
if (preset == OrientationPreset.XZ) return;
Orientation o = Orientation.FromPreset(preset);
for (int i = 0; i < geo.Vertices.Length; i++) {
Vector3 vertex = Vector3.zero;
vertex[(int)o.Horizontal] = geo.Vertices[i].x;
vertex[(int)o.Vertical] = geo.Vertices[i].z;
vertex[(int)o.Normal] = geo.Vertices[i].y;
geo.Vertices[i] = vertex;
if (i < geo.Normals.Length) {
Vector3 normal = Vector3.zero;
normal[(int)o.Horizontal] = geo.Normals[i].x;
normal[(int)o.Vertical] = geo.Normals[i].z;
normal[(int)o.Normal] = geo.Normals[i].y;
geo.Normals[i] = normal;
}
if (o.Vertical != Axis.Y && i < geo.UV.Length) {
geo.UV[i].x = 1 - geo.UV[i].x;
}
}
if (o.Normal == Axis.Z) {
for (int t = 0; t < geo.Triangles.Length; t += 3) {
// b remains the same
int a = geo.Triangles[t];
int c = geo.Triangles[t + 2];
geo.Triangles[t + 2] = a;
geo.Triangles[t] = c;
}
}
}
