// 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);
}