public void Transform(Matrix4 transform)
{
Matrix4 inverseTransposeTransform = Matrix4.Transpose(Matrix4.Invert(transform));
// Check.. Did I forget something?
// \todo Mark each attributemap how they should be transformed
var polygonCentroids = PolygonAttributes.FindOrNull <Vector3>("polygon_centroids");
var polygonNormals = PolygonAttributes.FindOrNull <Vector3>("polygon_normals");
var pointLocations = PointAttributes.FindOrNull <Vector3>("point_locations");
var pointNormals = PointAttributes.FindOrNull <Vector3>("point_normals");
var cornerNormals = CornerAttributes.FindOrNull <Vector3>("corner_normals");
// Make copies of old points
foreach (Point point in Points)
{
if (pointLocations != null && pointLocations.ContainsKey(point))
{
pointLocations[point] = transform.TransformPoint(pointLocations[point]);
}
if (pointNormals != null && pointNormals.ContainsKey(point))
{
pointNormals[point] = inverseTransposeTransform.TransformDirection(pointNormals[point]);
}
}
foreach (Polygon polygon in Polygons)
{
if (polygonCentroids != null && polygonCentroids.ContainsKey(polygon))
{
polygonCentroids[polygon] = transform.TransformPoint(polygonCentroids[polygon]);
}
if (polygonNormals != null && polygonNormals.ContainsKey(polygon))
{
polygonNormals[polygon] = inverseTransposeTransform.TransformDirection(polygonNormals[polygon]);
}
if (cornerNormals != null)
{
foreach (Corner corner in polygon.Corners)
{
if (cornerNormals.ContainsKey(corner))
{
cornerNormals[corner] = inverseTransposeTransform.TransformDirection(cornerNormals[corner]);
}
}
}
}
}
public void Geodesate(float radius)
{
float rInv = 1.0f / radius;
var polygonCentroids = PolygonAttributes.FindOrNull <Vector3>("polygon_centroids");
var polygonNormals = PolygonAttributes.FindOrNull <Vector3>("polygon_normals");
var pointLocations = PointAttributes.FindOrNull <Vector3>("point_locations");
var pointNormals = PointAttributes.FindOrNull <Vector3>("point_normals");
var cornerNormals = CornerAttributes.FindOrNull <Vector3>("corner_normals");
// Make copies of old points
foreach (Point point in Points)
{
if (
(pointLocations != null) &&
pointLocations.ContainsKey(point)
)
{
Vector3 newNormal = Vector3.Normalize(pointLocations[point]);
pointLocations[point] = radius * newNormal;
if (
(pointNormals != null) &&
pointNormals.ContainsKey(point)
)
{
pointNormals[point] = newNormal;
}
}
}
foreach (Polygon polygon in Polygons)
{
if (
(polygonCentroids != null) &&
polygonCentroids.ContainsKey(polygon)
)
{
Vector3 newNormalizedCentroid = Vector3.Normalize(polygonCentroids[polygon]);
polygonCentroids[polygon] = radius * newNormalizedCentroid;
if (
(polygonNormals != null) &&
polygonNormals.ContainsKey(polygon)
)
{
polygonNormals[polygon] = newNormalizedCentroid;
}
}
if (cornerNormals != null)
{
foreach (Corner corner in polygon.Corners)
{
if (
cornerNormals.ContainsKey(corner)
)
{
if (pointNormals.ContainsKey(corner.Point))
{
cornerNormals[corner] = pointNormals[corner.Point];
}
else if (pointLocations.ContainsKey(corner.Point))
{
cornerNormals[corner] = pointLocations[corner.Point] * rInv;
}
}
}
}
}
}
