// A helper function, analogous to ProcessFaces.
private void ProcessPoints(RenderingPassBufferStorage bufferStorage)
{
var points = bufferStorage.Points;
if (points.Count == 0)
{
return;
}
// Edges are encoded as line segment primitives whose vertices contain only position information.
bufferStorage.FormatBits = VertexFormatBits.PositionColored;
//int edgeVertexBufferSizeInFloats = VertexPosition.GetSizeInFloats() * bufferStorage.VertexBufferCount;
int vertexBufferSizeInFloats = VertexPositionColored.GetSizeInFloats() * bufferStorage.VertexBufferCount;
int numPoints = points.Count;
bufferStorage.VertexBuffer = new VertexBuffer(vertexBufferSizeInFloats);
bufferStorage.VertexBuffer.Map(vertexBufferSizeInFloats);
var vertexStream = bufferStorage.VertexBuffer.GetVertexStreamPositionColored();
for (int i = 0; i < numPoints; i++)
{
var pointInfo = points[i];
var vertex = pointInfo.Vertex;
vertexStream.AddVertex(new VertexPositionColored(vertex + pointInfo.Offset, pointInfo.Color));
}
bufferStorage.VertexBuffer.Unmap();
bufferStorage.IndexBufferCount = bufferStorage.PrimitiveCount * IndexPoint.GetSizeInShortInts();
int indexBufferSizeInShortInts = 1 * bufferStorage.IndexBufferCount;
bufferStorage.IndexBuffer = new IndexBuffer(indexBufferSizeInShortInts);
bufferStorage.IndexBuffer.Map(indexBufferSizeInShortInts);
{
IndexStreamPoint indexStream = bufferStorage.IndexBuffer.GetIndexStreamPoint();
for (int i = 0; i < numPoints; i++)
{
indexStream.AddPoint(new IndexPoint(i));
}
}
bufferStorage.IndexBuffer.Unmap();
bufferStorage.VertexFormat = new VertexFormat(bufferStorage.FormatBits);
bufferStorage.EffectInstance = new EffectInstance(bufferStorage.FormatBits);
}
public static int GetVertexSize(VertexFormatBits format)
{
switch (format)
{
case VertexFormatBits.Position: return(VertexPosition.GetSizeInFloats());
case VertexFormatBits.PositionColored:
return(VertexPositionColored.GetSizeInFloats());
case VertexFormatBits.PositionNormal:
return(VertexPositionNormal.GetSizeInFloats());
case VertexFormatBits.PositionNormalColored:
return(VertexPositionNormalColored.GetSizeInFloats());
default: break;
}
return(VertexPosition.GetSizeInFloats());
}
protected static int ToPointsBuffer
(
Rhino.Geometry.PointCloud pointCloud,
Primitive.Part part,
out VertexFormatBits vertexFormatBits,
out VertexBuffer vb, out int vertexCount,
out IndexBuffer ib
)
{
int pointsCount = part.VertexCount;
int normalCount = pointCloud.ContainsNormals ? pointsCount : 0;
int colorsCount = pointCloud.ContainsColors ? pointsCount : 0;
bool hasPoints = pointsCount > 0;
bool hasNormals = normalCount == pointsCount;
bool hasColors = colorsCount == pointsCount;
if (hasPoints)
{
if (hasNormals)
{
if (hasColors)
{
vertexFormatBits = VertexFormatBits.PositionNormalColored;
vb = new VertexBuffer(pointsCount * VertexPositionNormalColored.GetSizeInFloats());
vb.Map(pointsCount * VertexPositionNormalColored.GetSizeInFloats());
using (var vstream = vb.GetVertexStreamPositionNormalColored())
{
for (int p = part.StartVertexIndex; p < part.EndVertexIndex; ++p)
{
var point = pointCloud[p];
var c = new ColorWithTransparency(point.Color.R, point.Color.G, point.Color.B, 255u - point.Color.A);
vstream.AddVertex(new VertexPositionNormalColored(RawEncoder.ToHost(point.Location), RawEncoder.ToHost(point.Normal), c));
}
}
vb.Unmap();
}
else
{
vertexFormatBits = VertexFormatBits.PositionNormal;
vb = new VertexBuffer(pointsCount * VertexPositionNormal.GetSizeInFloats());
vb.Map(pointsCount * VertexPositionNormal.GetSizeInFloats());
using (var vstream = vb.GetVertexStreamPositionNormal())
{
for (int p = part.StartVertexIndex; p < part.EndVertexIndex; ++p)
{
var point = pointCloud[p];
vstream.AddVertex(new VertexPositionNormal(RawEncoder.ToHost(point.Location), RawEncoder.ToHost(point.Normal)));
}
}
vb.Unmap();
}
}
else
{
if (hasColors)
{
vertexFormatBits = VertexFormatBits.PositionColored;
vb = new VertexBuffer(pointsCount * VertexPositionColored.GetSizeInFloats());
vb.Map(pointsCount * VertexPositionColored.GetSizeInFloats());
using (var vstream = vb.GetVertexStreamPositionColored())
{
for (int p = part.StartVertexIndex; p < part.EndVertexIndex; ++p)
{
var point = pointCloud[p];
var c = new ColorWithTransparency(point.Color.R, point.Color.G, point.Color.B, 255u - point.Color.A);
vstream.AddVertex(new VertexPositionColored(RawEncoder.ToHost(point.Location), c));
}
}
vb.Unmap();
}
else
{
vertexFormatBits = VertexFormatBits.Position;
vb = new VertexBuffer(pointsCount * VertexPosition.GetSizeInFloats());
vb.Map(pointsCount * VertexPosition.GetSizeInFloats());
using (var vstream = vb.GetVertexStreamPosition())
{
for (int p = part.StartVertexIndex; p < part.EndVertexIndex; ++p)
{
var point = pointCloud[p];
vstream.AddVertex(new VertexPosition(RawEncoder.ToHost(point.Location)));
}
}
vb.Unmap();
}
}
ib = IndexPointsBuffer(pointsCount);
}
else
{
vertexFormatBits = 0;
vb = null;
ib = null;
}
vertexCount = pointsCount;
return(pointsCount);
}
protected static VertexBuffer ToVertexBuffer
(
Rhino.Geometry.Mesh mesh,
Primitive.Part part,
out VertexFormatBits vertexFormatBits,
System.Drawing.Color color = default
)
{
int verticesCount = part.EndVertexIndex - part.StartVertexIndex;
int normalCount = mesh.Normals.Count == mesh.Vertices.Count ? verticesCount : 0;
int colorsCount = color.IsEmpty ? (mesh.VertexColors.Count == mesh.Vertices.Count ? verticesCount : 0) : verticesCount;
bool hasVertices = verticesCount > 0;
bool hasNormals = normalCount > 0;
bool hasColors = colorsCount > 0;
if (hasVertices)
{
var vertices = mesh.Vertices;
if (hasNormals)
{
var normals = mesh.Normals;
if (hasColors)
{
vertexFormatBits = VertexFormatBits.PositionNormalColored;
var colors = mesh.VertexColors;
var vb = new VertexBuffer(verticesCount * VertexPositionNormalColored.GetSizeInFloats());
vb.Map(verticesCount * VertexPositionNormalColored.GetSizeInFloats());
using (var stream = vb.GetVertexStreamPositionNormalColored())
{
for (int v = part.StartVertexIndex; v < part.EndVertexIndex; ++v)
{
var c = !color.IsEmpty ? color : colors[v];
uint T = Math.Max(1, 255u - c.A);
stream.AddVertex(new VertexPositionNormalColored(RawEncoder.ToHost(vertices[v]), RawEncoder.ToHost(normals[v]), new ColorWithTransparency(c.R, c.G, c.B, T)));
}
}
vb.Unmap();
return(vb);
}
else
{
vertexFormatBits = VertexFormatBits.PositionNormal;
var vb = new VertexBuffer(verticesCount * VertexPositionNormal.GetSizeInFloats());
vb.Map(verticesCount * VertexPositionNormal.GetSizeInFloats());
using (var stream = vb.GetVertexStreamPositionNormal())
{
for (int v = part.StartVertexIndex; v < part.EndVertexIndex; ++v)
{
stream.AddVertex(new VertexPositionNormal(RawEncoder.ToHost(vertices[v]), RawEncoder.ToHost(normals[v])));
}
}
vb.Unmap();
return(vb);
}
}
else
{
if (hasColors)
{
vertexFormatBits = VertexFormatBits.PositionColored;
var colors = mesh.VertexColors;
var vb = new VertexBuffer(verticesCount * VertexPositionColored.GetSizeInFloats());
vb.Map(verticesCount * VertexPositionColored.GetSizeInFloats());
using (var stream = vb.GetVertexStreamPositionColored())
{
for (int v = part.StartVertexIndex; v < part.EndVertexIndex; ++v)
{
var c = !color.IsEmpty ? color : colors[v];
uint T = Math.Max(1, 255u - c.A);
stream.AddVertex(new VertexPositionColored(RawEncoder.ToHost(vertices[v]), new ColorWithTransparency(c.R, c.G, c.B, T)));
}
}
vb.Unmap();
return(vb);
}
else
{
vertexFormatBits = VertexFormatBits.Position;
var vb = new VertexBuffer(verticesCount * VertexPosition.GetSizeInFloats());
vb.Map(verticesCount * VertexPosition.GetSizeInFloats());
using (var stream = vb.GetVertexStreamPosition())
{
for (int v = part.StartVertexIndex; v < part.EndVertexIndex; ++v)
{
stream.AddVertex(new VertexPosition(RawEncoder.ToHost(vertices[v])));
}
}
vb.Unmap();
return(vb);
}
}
}
vertexFormatBits = 0;
return(null);
}
// A helper function, analogous to ProcessFaces.
private void ProcessEdges(RenderingPassBufferStorage bufferStorage)
{
var edges = bufferStorage.Edges;
if (edges.Count == 0)
{
return;
}
// Edges are encoded as line segment primitives whose vertices contain only position information.
bufferStorage.FormatBits = VertexFormatBits.PositionColored;
//int edgeVertexBufferSizeInFloats = VertexPosition.GetSizeInFloats() * bufferStorage.VertexBufferCount;
int edgeVertexBufferSizeInFloats = VertexPositionColored.GetSizeInFloats() * bufferStorage.VertexBufferCount;
List <int> numVerticesInEdgesBefore = new List <int>();
numVerticesInEdgesBefore.Add(0);
int numEdges = edges.Count;
bufferStorage.VertexBuffer = new VertexBuffer(edgeVertexBufferSizeInFloats);
bufferStorage.VertexBuffer.Map(edgeVertexBufferSizeInFloats);
var vertexStream = bufferStorage.VertexBuffer.GetVertexStreamPositionColored();
for (int i = 0; i < numEdges; i++)
{
var edgeInfo = edges[i];
foreach (XYZ vertex in edgeInfo.Vertices)
{
vertexStream.AddVertex(new VertexPositionColored(vertex + edgeInfo.Offset, edgeInfo.Color));
}
numVerticesInEdgesBefore.Add(numVerticesInEdgesBefore.Last() + edgeInfo.Vertices.Count);
}
bufferStorage.VertexBuffer.Unmap();
int edgeNumber = 0;
bufferStorage.IndexBufferCount = bufferStorage.PrimitiveCount * IndexLine.GetSizeInShortInts();
int indexBufferSizeInShortInts = 1 * bufferStorage.IndexBufferCount;
bufferStorage.IndexBuffer = new IndexBuffer(indexBufferSizeInShortInts);
bufferStorage.IndexBuffer.Map(indexBufferSizeInShortInts);
{
IndexStreamLine indexStream = bufferStorage.IndexBuffer.GetIndexStreamLine();
foreach (var edgeInfo in edges)
{
var xyzs = edgeInfo.Vertices;
int startIndex = numVerticesInEdgesBefore[edgeNumber];
for (int i = 1; i < xyzs.Count; i++)
{
// Add two indices that define a line segment.
indexStream.AddLine(new IndexLine((int)(startIndex + i - 1),
(int)(startIndex + i)));
}
edgeNumber++;
}
}
bufferStorage.IndexBuffer.Unmap();
bufferStorage.VertexFormat = new VertexFormat(bufferStorage.FormatBits);
bufferStorage.EffectInstance = new EffectInstance(bufferStorage.FormatBits);
}
// Create and populate a pair of vertex and index buffers. Also update parameters associated with the format of the vertices.
private void ProcessTriangles(RenderingPassBufferStorage bufferStorage)
{
List <TriangleInfo> triangles = bufferStorage.Triangles;
if (triangles.Count == 0)
{
return;
}
bool useNormals = this.Inputs.EnableFaceNormal;
// Vertex attributes are stored sequentially in vertex buffers. The attributes can include position, normal vector, and color.
// All vertices within a vertex buffer must have the same format. Possible formats are enumerated by VertexFormatBits.
// Vertex format also determines the type of rendering effect that can be used with the vertex buffer. In this sample,
// the color is always encoded in the vertex attributes.
bufferStorage.FormatBits = useNormals ? VertexFormatBits.PositionNormalColored : VertexFormatBits.PositionColored;
// The format of the vertices determines the size of the vertex buffer.
int vertexBufferSizeInFloats = (useNormals ? VertexPositionNormalColored.GetSizeInFloats() : VertexPositionColored.GetSizeInFloats()) *
bufferStorage.VertexBufferCount;
bufferStorage.VertexBuffer = new VertexBuffer(vertexBufferSizeInFloats);
bufferStorage.VertexBuffer.Map(vertexBufferSizeInFloats);
int numTriangles = triangles.Count;
if (useNormals)
{
// A VertexStream is used to write data into a VertexBuffer.
VertexStreamPositionNormalColored vertexStream = bufferStorage.VertexBuffer.GetVertexStreamPositionNormalColored();
for (int i = 0; i < numTriangles; i++)
{
var triangleInfo = triangles[i];
g3.Triangle3d triangle = triangleInfo.Triangle;
vertexStream.AddVertex(new VertexPositionNormalColored(triangle.V0.ToXYZ() + triangleInfo.Offset, triangleInfo.Normal, triangleInfo.ColorWithTransparency));
vertexStream.AddVertex(new VertexPositionNormalColored(triangle.V1.ToXYZ() + triangleInfo.Offset, triangleInfo.Normal, triangleInfo.ColorWithTransparency));
vertexStream.AddVertex(new VertexPositionNormalColored(triangle.V2.ToXYZ() + triangleInfo.Offset, triangleInfo.Normal, triangleInfo.ColorWithTransparency));
}
}
else
{
// A VertexStream is used to write data into a VertexBuffer.
VertexStreamPositionColored vertexStream = bufferStorage.VertexBuffer.GetVertexStreamPositionColored();
for (int i = 0; i < numTriangles; i++)
{
var triangleInfo = triangles[i];
g3.Triangle3d triangle = triangleInfo.Triangle;
// make the color of all faces white in HLR
ColorWithTransparency color = triangleInfo.ColorWithTransparency;
vertexStream.AddVertex(new VertexPositionColored(triangle.V0.ToXYZ() + triangleInfo.Offset, color));
vertexStream.AddVertex(new VertexPositionColored(triangle.V1.ToXYZ() + triangleInfo.Offset, color));
vertexStream.AddVertex(new VertexPositionColored(triangle.V2.ToXYZ() + triangleInfo.Offset, color));
}
}
bufferStorage.VertexBuffer.Unmap();
// Primitives are specified using a pair of vertex and index buffers. An index buffer contains a sequence of indices into
// the associated vertex buffer, each index referencing a particular vertex.
bufferStorage.IndexBufferCount = bufferStorage.PrimitiveCount * IndexTriangle.GetSizeInShortInts();
int indexBufferSizeInShortInts = 1 * bufferStorage.IndexBufferCount;
bufferStorage.IndexBuffer = new IndexBuffer(indexBufferSizeInShortInts);
bufferStorage.IndexBuffer.Map(indexBufferSizeInShortInts);
// An IndexStream is used to write data into an IndexBuffer.
IndexStreamTriangle indexStream = bufferStorage.IndexBuffer.GetIndexStreamTriangle();
int currIndex = 0;
for (int i = 0; i < numTriangles; i++)
{
// Add three indices that define a triangle.
indexStream.AddTriangle(new IndexTriangle(currIndex + 0, currIndex + 1, currIndex + 2));
currIndex += 3;
}
bufferStorage.IndexBuffer.Unmap();
// VertexFormat is a specification of the data that is associated with a vertex (e.g., position).
bufferStorage.VertexFormat = new VertexFormat(bufferStorage.FormatBits);
// Effect instance is a specification of the appearance of geometry. For example, it may be used to specify color, if there is no color information provided with the vertices.
bufferStorage.EffectInstance = new EffectInstance(bufferStorage.FormatBits);
}
// Create and populate a pair of vertex and index buffers. Also update parameters associated with the format of the vertices.
private void ProcessFaces(RenderingPassBufferStorage bufferStorage)
{
List <MeshInfo> meshes = bufferStorage.Meshes;
if (meshes.Count == 0)
{
return;
}
List <int> numVerticesInMeshesBefore = new List <int>();
bool useNormals = this.Inputs.EnableFaceNormal;
// Vertex attributes are stored sequentially in vertex buffers. The attributes can include position, normal vector, and color.
// All vertices within a vertex buffer must have the same format. Possible formats are enumerated by VertexFormatBits.
// Vertex format also determines the type of rendering effect that can be used with the vertex buffer. In this sample,
// the color is always encoded in the vertex attributes.
bufferStorage.FormatBits = useNormals ? VertexFormatBits.PositionNormalColored : VertexFormatBits.PositionColored;
// The format of the vertices determines the size of the vertex buffer.
int vertexBufferSizeInFloats = (useNormals ? VertexPositionNormalColored.GetSizeInFloats() : VertexPositionColored.GetSizeInFloats()) *
bufferStorage.VertexBufferCount;
numVerticesInMeshesBefore.Add(0);
bufferStorage.VertexBuffer = new VertexBuffer(vertexBufferSizeInFloats);
bufferStorage.VertexBuffer.Map(vertexBufferSizeInFloats);
int numMeshes = meshes.Count;
if (useNormals)
{
// A VertexStream is used to write data into a VertexBuffer.
VertexStreamPositionNormalColored vertexStream = bufferStorage.VertexBuffer.GetVertexStreamPositionNormalColored();
for (int i = 0; i < numMeshes; i++)
{
var meshInfo = meshes[i];
Mesh mesh = meshInfo.Mesh;
foreach (XYZ vertex in mesh.Vertices)
{
vertexStream.AddVertex(new VertexPositionNormalColored(vertex + meshInfo.Offset, meshInfo.Normal, meshInfo.ColorWithTransparency));
}
numVerticesInMeshesBefore.Add(numVerticesInMeshesBefore.Last() + mesh.Vertices.Count);
}
}
else
{
// A VertexStream is used to write data into a VertexBuffer.
VertexStreamPositionColored vertexStream = bufferStorage.VertexBuffer.GetVertexStreamPositionColored();
for (int i = 0; i < numMeshes; i++)
{
var meshInfo = meshes[i];
Mesh mesh = meshInfo.Mesh;
// make the color of all faces white in HLR
ColorWithTransparency color = meshInfo.ColorWithTransparency;
foreach (XYZ vertex in mesh.Vertices)
{
vertexStream.AddVertex(new VertexPositionColored(vertex + meshInfo.Offset, color));
}
numVerticesInMeshesBefore.Add(numVerticesInMeshesBefore.Last() + mesh.Vertices.Count);
}
}
bufferStorage.VertexBuffer.Unmap();
// Primitives are specified using a pair of vertex and index buffers. An index buffer contains a sequence of indices into
// the associated vertex buffer, each index referencing a particular vertex.
int meshNumber = 0;
bufferStorage.IndexBufferCount = bufferStorage.PrimitiveCount * IndexTriangle.GetSizeInShortInts();
int indexBufferSizeInShortInts = 1 * bufferStorage.IndexBufferCount;
bufferStorage.IndexBuffer = new IndexBuffer(indexBufferSizeInShortInts);
bufferStorage.IndexBuffer.Map(indexBufferSizeInShortInts);
{
// An IndexStream is used to write data into an IndexBuffer.
IndexStreamTriangle indexStream = bufferStorage.IndexBuffer.GetIndexStreamTriangle();
foreach (MeshInfo meshInfo in meshes)
{
Mesh mesh = meshInfo.Mesh;
int startIndex = numVerticesInMeshesBefore[meshNumber];
for (int i = 0; i < mesh.NumTriangles; i++)
{
MeshTriangle mt = mesh.get_Triangle(i);
// Add three indices that define a triangle.
indexStream.AddTriangle(new IndexTriangle((int)(startIndex + mt.get_Index(0)),
(int)(startIndex + mt.get_Index(1)),
(int)(startIndex + mt.get_Index(2))));
}
meshNumber++;
}
}
bufferStorage.IndexBuffer.Unmap();
// VertexFormat is a specification of the data that is associated with a vertex (e.g., position).
bufferStorage.VertexFormat = new VertexFormat(bufferStorage.FormatBits);
// Effect instance is a specification of the appearance of geometry. For example, it may be used to specify color, if there is no color information provided with the vertices.
bufferStorage.EffectInstance = new EffectInstance(bufferStorage.FormatBits);
}