/// <summary>
/// Builds a line list containing a line for each face binormal.
/// </summary>
public List <Vector3> BuildLineListForFaceBinormals()
{
List <Vector3> result = new List <Vector3>();
//Generate all lines
foreach (Triangle actTriangle in this.Triangles)
{
//Get all vertices of current face
GeometryData geo1 = m_owner.RawGeometry[actTriangle.Index1];
GeometryData geo2 = m_owner.RawGeometry[actTriangle.Index2];
GeometryData geo3 = m_owner.RawGeometry[actTriangle.Index3];
//Get average values for current face
Vector3 averageBinormal = Vector3.Normalize(Vector3Ex.Average(geo1.Binormal, geo2.Binormal, geo3.Binormal));
Vector3 averagePosition = Vector3Ex.Average(geo1.Position, geo2.Position, geo3.Position);
averageBinormal *= 0.2f;
//Generate a line
if (averageBinormal.Length() > 0.1f)
{
result.Add(averagePosition);
result.Add(averagePosition + averageBinormal);
}
}
return(result);
}
/// <summary>
/// Copies this structure and replaces the given values
/// </summary>
public GeometryData Copy(Vector3 newPosition)
{
GeometryData result = this;
result.m_position = newPosition;
return(result);
}
public Vertex AddVertex(
int indexToCloneFrom = -1)
{
if (indexToCloneFrom > -1)
{
indexToCloneFrom.EnsureInRange(0, m_rawGeometry.Count - 1, nameof(indexToCloneFrom));
GeometryData geoData = m_rawGeometry[indexToCloneFrom];
TextureData texData = m_rawTexture != null ? m_rawTexture[indexToCloneFrom] : default(TextureData);
AnimationData animData = m_rawAnimation != null ? m_rawAnimation[indexToCloneFrom] : default(AnimationData);
m_rawGeometry.Add(geoData);
m_rawTexture?.Add(texData);
m_rawAnimation?.Add(animData);
return(new Vertex(this, m_rawGeometry.Count - 1));
}
else
{
m_rawGeometry.Add(new GeometryData());
if (m_rawAnimation != null)
{
m_rawAnimation.Add(new AnimationData());
}
if (m_rawTexture != null)
{
m_rawTexture.Add(new TextureData());
}
return(new Vertex(this, m_rawGeometry.Count - 1));
}
}
/// <summary>
/// Copies this structure and replaces the given values
/// </summary>
public GeometryData Copy(Vector3 newPosition, Vector3 newNormal)
{
GeometryData result = this;
result.m_position = newPosition;
result.m_normal = newNormal;
return(result);
}
/// <summary>
/// Changes the color on each vertex.
/// </summary>
/// <param name="newColor">The new color.</param>
public void SetColorOnEachVertex(Color4 newColor)
{
for (int loop = 0; loop < m_rawGeometry.Count; loop++)
{
GeometryData rawGeo = m_rawGeometry[loop];
rawGeo.Color = newColor;
m_rawGeometry[loop] = rawGeo;
}
}
/// <summary>
/// Calculates normals for all triangles specifyed by the given parameters.
/// </summary>
/// <param name="startVertex">The vertex index on which to start.</param>
/// <param name="vertexCount">Total count of vertices to be updated.</param>
public void CalculateNormals(int startVertex, int vertexCount)
{
if ((startVertex < 0) || (startVertex >= m_rawGeometry.Count))
{
throw new ArgumentException("startVertex");
}
if (vertexCount + startVertex > m_rawGeometry.Count)
{
throw new ArgumentException("vertexCount");
}
for (int actVertexIndex = startVertex; actVertexIndex < startVertex + vertexCount; actVertexIndex++)
{
// Find all triangles connected to this vertex and get normals from them
Vector3 finalNormalHelper = Vector3.Zero;
Vector3 finalNormalHelper2 = Vector3.Zero;
int normalCount = 0;
int surfaceCount = m_surfaces.Count;
for (int actSurfaceIndex = 0; actSurfaceIndex < surfaceCount; actSurfaceIndex++)
{
VertexStructureSurface actSurface = m_surfaces[actSurfaceIndex];
int triangleCount = actSurface.CountTriangles;
for (int loopTriangle = 0; loopTriangle < triangleCount; loopTriangle++)
{
int triangleStartIndex = loopTriangle * 3;
if ((actSurface.IndicesInternal[triangleStartIndex] == actVertexIndex) ||
(actSurface.IndicesInternal[triangleStartIndex + 1] == actVertexIndex) ||
(actSurface.IndicesInternal[triangleStartIndex + 2] == actVertexIndex))
{
GeometryData geo1 = m_rawGeometry[actSurface.IndicesInternal[triangleStartIndex]];
GeometryData geo2 = m_rawGeometry[actSurface.IndicesInternal[triangleStartIndex + 1]];
GeometryData geo3 = m_rawGeometry[actSurface.IndicesInternal[triangleStartIndex + 2]];
finalNormalHelper += Vector3Ex.CalculateTriangleNormal(geo1.Position, geo2.Position, geo3.Position, false);
normalCount++;
}
}
}
// Calculate final normal
if (normalCount > 0)
{
GeometryData actGeometry = m_rawGeometry[actVertexIndex];
actGeometry.Normal = finalNormalHelper / finalNormalHelper.Length();
m_rawGeometry[actVertexIndex] = actGeometry;
normalCount = 0;
}
}
}
