private void buttonBuildCell_Click(object sender, EventArgs e)
{
if (m_Prim_CellFaces != null)
{
m_Prim_CellFaces.Dispose();
m_Prim_CellEdges.Dispose();
m_Prim_CellFaces = null;
m_Prim_CellEdges = null;
}
float AreaThresholdLow = m_AreaMin + 0.1f * (m_AreaAvg - m_AreaMin);
float AreaThresholdHigh = m_AreaMax - 0.1f * (m_AreaMax - m_AreaAvg);
// float AreaThresholdLow = m_AreaAvg / 1.5f;
// float AreaThresholdHigh = 1.5f * m_AreaAvg;
List <VertexP3N3> vertices = new List <VertexP3N3>();
List <uint> indices_Faces = new List <uint>();
List <uint> Indices_Edges = new List <uint>();
float AreaMin = float.MaxValue;
float AreaMax = -float.MaxValue;
float TotalArea = 0.0f;
for (int FaceIndex = 0; FaceIndex < m_neighborPositions.Length; FaceIndex++)
{
float3 P = m_neighborPositions[FaceIndex];
float3 N = -P.Normalized; // Pointing inward
// Build the polygon by cutting it with all other neighbors
CellPolygon Polygon = new CellPolygon(P, N);
for (int NeighborIndex = 0; NeighborIndex < m_neighborPositions.Length; NeighborIndex++)
{
if (NeighborIndex != FaceIndex)
{
float3 Pn = m_neighborPositions[NeighborIndex];
float3 Nn = -Pn.Normalized; // Pointing inward
Polygon.Cut(Pn, Nn);
}
}
// Append vertices & indices for both faces & edges
uint VertexOffset = (uint)vertices.Count;
uint VerticesCount = (uint)Polygon.m_Vertices.Length;
if (VerticesCount > 0)
{
float PolygonArea = 0.0f;
for (uint FaceTriangleIndex = 0; FaceTriangleIndex < VerticesCount - 2; FaceTriangleIndex++)
{
indices_Faces.Add(VertexOffset + 0);
indices_Faces.Add(VertexOffset + 1 + FaceTriangleIndex);
indices_Faces.Add(VertexOffset + 2 + FaceTriangleIndex);
float Area = 0.5f * (Polygon.m_Vertices[2 + FaceTriangleIndex] - Polygon.m_Vertices[0]).Cross(Polygon.m_Vertices[1 + FaceTriangleIndex] - Polygon.m_Vertices[0]).Length;
PolygonArea += Area;
}
AreaMin = Math.Min(AreaMin, PolygonArea);
AreaMax = Math.Max(AreaMax, PolygonArea);
TotalArea += PolygonArea;
for (uint VertexIndex = 0; VertexIndex < VerticesCount; VertexIndex++)
{
Indices_Edges.Add(VertexOffset + VertexIndex);
Indices_Edges.Add(VertexOffset + (VertexIndex + 1) % VerticesCount);
}
float3 Color = PolygonArea <AreaThresholdLow ? new float3(1, 0, 0) : PolygonArea> AreaThresholdHigh ? new float3(0, 1, 0) : new float3(1, 1, 0);
foreach (float3 Vertex in Polygon.m_Vertices)
{
vertices.Add(new VertexP3N3()
{
P = Vertex, N = Color
});
}
}
}
m_AreaMin = AreaMin;
m_AreaMax = AreaMax;
m_AreaAvg = TotalArea / m_neighborPositions.Length;
labelStats.Text = "Area min: " + m_AreaMin + "\r\n"
+ "Area max: " + m_AreaMax + "\r\n"
+ "Area average: " + m_AreaAvg + "\r\n"
+ "Area total: " + TotalArea + "\r\n";
m_Prim_CellFaces = new Primitive(m_Device, (uint)vertices.Count, VertexP3N3.FromArray(vertices.ToArray()), indices_Faces.ToArray(), Primitive.TOPOLOGY.TRIANGLE_LIST, VERTEX_FORMAT.P3N3);
m_Prim_CellEdges = new Primitive(m_Device, (uint)vertices.Count, VertexP3N3.FromArray(vertices.ToArray()), Indices_Edges.ToArray(), Primitive.TOPOLOGY.LINE_LIST, VERTEX_FORMAT.P3N3);
}
private void buttonBuildCell_Click( object sender, EventArgs e )
{
if ( m_Prim_CellFaces != null ) {
m_Prim_CellFaces.Dispose();
m_Prim_CellEdges.Dispose();
m_Prim_CellFaces = null;
m_Prim_CellEdges = null;
}
float AreaThresholdLow = m_AreaMin + 0.1f * (m_AreaAvg - m_AreaMin);
float AreaThresholdHigh = m_AreaMax - 0.1f * (m_AreaMax - m_AreaAvg);
// float AreaThresholdLow = m_AreaAvg / 1.5f;
// float AreaThresholdHigh = 1.5f * m_AreaAvg;
List<VertexP3N3> Vertices = new List<VertexP3N3>();
List<uint> Indices_Faces = new List<uint>();
List<uint> Indices_Edges = new List<uint>();
float AreaMin = float.MaxValue;
float AreaMax = -float.MaxValue;
float TotalArea = 0.0f;
for ( int FaceIndex=0; FaceIndex < m_NeighborPositions.Length; FaceIndex++ ) {
float3 P = m_NeighborPositions[FaceIndex];
float3 N = -P.Normalized; // Pointing inward
// Build the polygon by cutting it with all other neighbors
CellPolygon Polygon = new CellPolygon( P, N );
for ( int NeighborIndex=0; NeighborIndex < m_NeighborPositions.Length; NeighborIndex++ )
if ( NeighborIndex != FaceIndex ) {
float3 Pn = m_NeighborPositions[NeighborIndex];
float3 Nn = -Pn.Normalized; // Pointing inward
Polygon.Cut( Pn, Nn );
}
// Append vertices & indices for both faces & edges
uint VertexOffset = (uint) Vertices.Count;
uint VerticesCount = (uint) Polygon.m_Vertices.Length;
float PolygonArea = 0.0f;
for ( uint FaceTriangleIndex=0; FaceTriangleIndex < VerticesCount-2; FaceTriangleIndex++ ) {
Indices_Faces.Add( VertexOffset + 0 );
Indices_Faces.Add( VertexOffset + 1 + FaceTriangleIndex );
Indices_Faces.Add( VertexOffset + 2 + FaceTriangleIndex );
float Area = 0.5f * (Polygon.m_Vertices[2 + FaceTriangleIndex] - Polygon.m_Vertices[0]).Cross( Polygon.m_Vertices[1 + FaceTriangleIndex] - Polygon.m_Vertices[0] ).Length;
PolygonArea += Area;
}
AreaMin = Math.Min( AreaMin, PolygonArea );
AreaMax = Math.Max( AreaMax, PolygonArea );
TotalArea += PolygonArea;
for ( uint VertexIndex=0; VertexIndex < VerticesCount; VertexIndex++ ) {
Indices_Edges.Add( VertexOffset + VertexIndex );
Indices_Edges.Add( VertexOffset + (VertexIndex+1) % VerticesCount );
}
float3 Color = PolygonArea < AreaThresholdLow ? new float3( 1, 0, 0 ) : PolygonArea > AreaThresholdHigh ? new float3( 0, 1, 0 ) : new float3( 1, 1, 0 );
foreach ( float3 Vertex in Polygon.m_Vertices ) {
Vertices.Add( new VertexP3N3() { P = Vertex, N = Color } );
}
}
m_AreaMin = AreaMin;
m_AreaMax = AreaMax;
m_AreaAvg = TotalArea / m_NeighborPositions.Length;
labelStats.Text = "Area min: " + m_AreaMin + "\r\n"
+ "Area max: " + m_AreaMax + "\r\n"
+ "Area average: " + m_AreaAvg + "\r\n"
+ "Area total: " + TotalArea + "\r\n";
m_Prim_CellFaces = new Primitive( m_Device, Vertices.Count, VertexP3N3.FromArray( Vertices.ToArray() ), Indices_Faces.ToArray(), Primitive.TOPOLOGY.TRIANGLE_LIST, VERTEX_FORMAT.P3N3 );
m_Prim_CellEdges = new Primitive( m_Device, Vertices.Count, VertexP3N3.FromArray( Vertices.ToArray() ), Indices_Edges.ToArray(), Primitive.TOPOLOGY.LINE_LIST, VERTEX_FORMAT.P3N3 );
}
