private void BuildData()
{
// if the mesh is reversed by scale, we must change the culling of the faces by inversing all triangles.
// the mesh is reverse only if the number of resersing axes is impair.
bool reversed = scale.x < 0;
if (scale.y < 0)
{
reversed = !reversed;
}
if (scale.z < 0)
{
reversed = !reversed;
}
triangles = reversed ? MeshUtility.GetReversedTriangles(Mesh) : Mesh.triangles;
// we transform the source mesh vertices according to rotation/translation/scale
int i = 0;
vertices = new List <MeshVertex>(Mesh.vertexCount);
foreach (Vector3 vert in Mesh.vertices)
{
var transformed = new MeshVertex(vert, Mesh.normals[i++]);
// application of rotation
if (rotation != Quaternion.identity)
{
transformed.position = rotation * transformed.position;
transformed.normal = rotation * transformed.normal;
}
if (scale != Vector3.one)
{
transformed.position = Vector3.Scale(transformed.position, scale);
transformed.normal = Vector3.Scale(transformed.normal, scale);
}
if (translation != Vector3.zero)
{
transformed.position += translation;
}
vertices.Add(transformed);
}
// find the bounds along x
minX = float.MaxValue;
float maxX = float.MinValue;
foreach (var vert in vertices)
{
Vector3 p = vert.position;
maxX = Math.Max(maxX, p.x);
minX = Math.Min(minX, p.x);
}
length = Math.Abs(maxX - minX);
}
/// <summary>
/// Build data that are consistent between computations if no property has been changed.
/// This method allows the computation due to curve changes to be faster.
/// </summary>
private void BuildData()
{
if (source == null)
{
throw new Exception(GetType().Name + " can't compute because there is no source mesh.");
}
// find the bounds along x
minX = float.MaxValue;
float maxX = float.MinValue;
foreach (Vertex vert in vertices)
{
Vector3 p = vert.v;
if (rotation != Quaternion.identity)
{
p = rotation * p;
}
if (translation != Vector3.zero)
{
p += translation;
}
maxX = Math.Max(maxX, p.x);
minX = Math.Min(minX, p.x);
}
length = Math.Abs(maxX - minX);
// if the mesh is reversed by scale, we must change the culling of the faces by inversing all triangles.
// the mesh is reverse only if the number of resersing axes is impair.
bool reversed = scale.x < 0;
if (scale.y < 0)
{
reversed = !reversed;
}
if (scale.z < 0)
{
reversed = !reversed;
}
result.triangles = reversed ? MeshUtility.GetReversedTriangles(source) : source.triangles;
// we transform the source mesh vertices according to rotation/translation/scale
transformedVertices.Clear();
foreach (Vertex vert in vertices)
{
Vertex transformed = new Vertex()
{
v = vert.v,
n = vert.n
};
// application of rotation
if (rotation != Quaternion.identity)
{
transformed.v = rotation * transformed.v;
transformed.n = rotation * transformed.n;
}
if (scale != Vector3.one)
{
transformed.v = Vector3.Scale(transformed.v, scale);
transformed.n = Vector3.Scale(transformed.n, scale);
}
if (translation != Vector3.zero)
{
transformed.v += translation;
}
transformedVertices.Add(transformed);
}
}
