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);
}
