|
public Append ( IList |
||
| positionsToAppend | IList |
/// The points to append. /// |
| triangleIndicesToAppend | IList |
/// The triangle indices to append. /// |
| normalsToAppend | IList |
/// The normal vectors to append. /// |
| textureCoordinatesToAppend | IList |
/// The texture coordinates to append. /// |
| return | void | |
public void Append(
IList<Point3D> positionsToAppend,
IList<int> triangleIndicesToAppend,
IList<Vector3D> normalsToAppend = null,
IList<Point> textureCoordinatesToAppend = null)
{
if (positionsToAppend == null)
{
throw new ArgumentNullException("positionsToAppend");
}
if (this.normals != null && normalsToAppend == null)
{
throw new InvalidOperationException(SourceMeshNormalsShouldNotBeNull);
}
if (this.textureCoordinates != null && textureCoordinatesToAppend == null)
{
throw new InvalidOperationException(SourceMeshTextureCoordinatesShouldNotBeNull);
}
if (normalsToAppend != null && normalsToAppend.Count != positionsToAppend.Count)
{
throw new InvalidOperationException(WrongNumberOfNormals);
}
if (textureCoordinatesToAppend != null && textureCoordinatesToAppend.Count != positionsToAppend.Count)
{
throw new InvalidOperationException(WrongNumberOfTextureCoordinates);
}
int index0 = this.positions.Count;
foreach (var p in positionsToAppend)
{
this.positions.Add(p);
}
if (this.normals != null && normalsToAppend != null)
{
foreach (var n in normalsToAppend)
{
this.normals.Add(n);
}
}
if (this.textureCoordinates != null && textureCoordinatesToAppend != null)
{
foreach (var t in textureCoordinatesToAppend)
{
this.textureCoordinates.Add(t);
}
}
foreach (int i in triangleIndicesToAppend)
{
this.triangleIndices.Add(index0 + i);
}
}
public static void DrawLibGGraphicItem(NodeModel node, object geom, string tag, RenderDescription rd, Octree.OctreeSearch.Octree octree)
{
var selected = DynamoSelection.Instance.Selection.Contains(node);
var g = geom as GraphicItem;
if (g is CoordinateSystem)
{
#region draw coordinate systems
var line_strip_vertices = g.line_strip_vertices_threadsafe();
for (int i = 0; i < line_strip_vertices.Count; i += 6)
{
var p1 = new Point3D(
line_strip_vertices[i],
line_strip_vertices[i + 1],
line_strip_vertices[i + 2]);
var p2 = new Point3D(
line_strip_vertices[i + 3],
line_strip_vertices[i + 4],
line_strip_vertices[i + 5]);
if (i < 6)
{
rd.XAxisPoints.Add(p1);
rd.XAxisPoints.Add(p2);
}
else if (i >= 6 && i < 12)
{
rd.YAxisPoints.Add(p1);
rd.YAxisPoints.Add(p2);
}
else
{
rd.ZAxisPoints.Add(p1);
rd.ZAxisPoints.Add(p2);
}
}
#endregion
}
else
{
#region draw points
var point_vertices = g.point_vertices_threadsafe();
for (int i = 0; i < point_vertices.Count; i += 3)
{
var pos = new Point3D(point_vertices[i],
point_vertices[i + 1], point_vertices[i + 2]);
if (selected)
{
rd.SelectedPoints.Add(pos);
}
else
{
rd.Points.Add(pos);
}
if (node.DisplayLabels)
{
rd.Text.Add(new BillboardTextItem { Text = tag, Position = pos });
}
}
#endregion
#region draw lines
FloatList line_strip_vertices = g.line_strip_vertices_threadsafe();
for (int i = 0; i < line_strip_vertices.Count-3; i += 3)
{
var start = new Point3D(
line_strip_vertices[i],
line_strip_vertices[i + 1],
line_strip_vertices[i + 2]);
var end = new Point3D(
line_strip_vertices[i + 3],
line_strip_vertices[i + 4],
line_strip_vertices[i + 5]);
//draw a label at the start of the curve
if (node.DisplayLabels && i == 0)
{
rd.Text.Add(new BillboardTextItem { Text = tag, Position = start });
}
if (selected)
{
rd.SelectedLines.Add(start);
rd.SelectedLines.Add(end);
}
else
{
rd.Lines.Add(start);
rd.Lines.Add(end);
}
}
#endregion
#region draw surface
//var sw = new Stopwatch();
//sw.Start();
var builder = new MeshBuilder();
var points = new Point3DCollection();
var tex = new PointCollection();
var norms = new Vector3DCollection();
var tris = new List<int>();
FloatList triangle_vertices = g.triangle_vertices_threadsafe();
FloatList triangle_normals = g.triangle_normals_threadsafe();
for (int i = 0; i < triangle_vertices.Count; i+=3)
{
var new_point = new Point3D(triangle_vertices[i],
triangle_vertices[i + 1],
triangle_vertices[i + 2]);
var normal = new Vector3D(triangle_normals[i],
triangle_normals[i + 1],
triangle_normals[i + 2]);
//find a matching point
//compare the angle between the normals
//to discern a 'break' angle for adjacent faces
//int foundIndex = -1;
//for (int j = 0; j < points.Count; j++)
//{
// var testPt = points[j];
// var testNorm = norms[j];
// var ang = Vector3D.AngleBetween(normal, testNorm);
// if (new_point.X == testPt.X &&
// new_point.Y == testPt.Y &&
// new_point.Z == testPt.Z &&
// ang > 90.0000)
// {
// foundIndex = j;
// break;
// }
//}
//if (foundIndex != -1)
//{
// tris.Add(foundIndex);
// continue;
//}
tris.Add(points.Count);
points.Add(new_point);
norms.Add(normal);
tex.Add(new System.Windows.Point(0,0));
octree.AddNode(new_point.X, new_point.Y, new_point.Z, node.GUID.ToString());
}
//builder.AddTriangles(points, norms, tex);
builder.Append(points, tris, norms, tex);
//sw.Stop();
//Debug.WriteLine(string.Format("{0} elapsed for drawing geometry.", sw.Elapsed));
//don't add empty meshes
if (builder.Positions.Count > 0)
{
if (selected)
{
rd.SelectedMeshes.Add(builder.ToMesh(true));
}
else
{
rd.Meshes.Add(builder.ToMesh(true));
}
}
#endregion
}
}
