public static void PushMesh(Autodesk.Revit.DB.Mesh mesh, IRenderPackage package)
{
for (var i = 0; i < mesh.NumTriangles; i++)
{
var triangle = mesh.get_Triangle(i);
for (var j = 0; j < 3; j++)
{
var xyz = triangle.get_Vertex(j);
package.PushTriangleVertex(xyz.X, xyz.Y, xyz.Z);
}
var a = mesh.get_Triangle(i).get_Vertex(1).Subtract(mesh.get_Triangle(i).get_Vertex(0)).Normalize();
var b = mesh.get_Triangle(i).get_Vertex(2).Subtract(mesh.get_Triangle(i).get_Vertex(0)).Normalize();
var norm = a.CrossProduct(b);
package.PushTriangleVertexNormal(norm.X, norm.Y, norm.Z);
package.PushTriangleVertexNormal(norm.X, norm.Y, norm.Z);
package.PushTriangleVertexNormal(norm.X, norm.Y, norm.Z);
}
}
public static void PushMesh(Autodesk.Revit.DB.Mesh mesh, IRenderPackage package)
{
for (var i = 0; i < mesh.NumTriangles; i++)
{
var triangle = mesh.get_Triangle(i);
for (var j = 0; j < 3; j++)
{
var xyz = triangle.get_Vertex(j);
package.PushTriangleVertex(xyz.X, xyz.Y, xyz.Z);
}
var a = mesh.get_Triangle(i).get_Vertex(1).Subtract(mesh.get_Triangle(i).get_Vertex(0)).Normalize();
var b = mesh.get_Triangle(i).get_Vertex(2).Subtract(mesh.get_Triangle(i).get_Vertex(0)).Normalize();
var norm = a.CrossProduct(b);
package.PushTriangleVertexNormal(norm.X, norm.Y, norm.Z);
package.PushTriangleVertexNormal(norm.X, norm.Y, norm.Z);
package.PushTriangleVertexNormal(norm.X, norm.Y, norm.Z);
}
}
public void Tessellate(IRenderPackage package, double tol = -1, int maxGridLines = 512)
{
for (int i = 0; i < vertices.Count; i = i + 3)
{
package.PushTriangleVertex(
vertices[i], vertices[i + 1], vertices[i + 2]);
}
for (int i = 0; i < normals.Count; i = i + 3)
{
package.PushTriangleVertexNormal(
normals[i], normals[i + 1], normals[i + 2]);
}
for (int i = 0; i < colors.Count; i = i + 4)
{
package.PushTriangleVertexColor(
colors[i], colors[i + 1], colors[i + 2], colors[i + 3]);
}
}
private void PushTriangleVertex(IRenderPackage package, Point p, Vector n)
{
package.PushTriangleVertex(p.X, p.Y, p.Z);
package.PushTriangleVertexColor(255, 255, 0, 255);
package.PushTriangleVertexNormal(n.X, n.Y, n.Z);
}
private static void DrawCS(CoordinateSystem cs, IRenderPackage package)
{
//ccw unit rect points
var a = Point.ByCoordinates(-.25, -.25, 0);
var b = Point.ByCoordinates(.25, -.25, 0);
var c = Point.ByCoordinates(.25, .25, 0);
var d = Point.ByCoordinates(-.25, .25, 0);
var planes = new List<Plane>() {cs.XYPlane, cs.YZPlane, cs.ZXPlane};
foreach (var p in planes)
{
var z = p.Normal.Normalized();
var y = z.IsParallel(Vector.ByCoordinates(0,0,1)) ? Vector.ByCoordinates(0,1,0) :
z.Cross(Vector.ByCoordinates(0, 0, 1)).Normalized();
var x = z.Cross(y).Normalized();
var newCS = CoordinateSystem.ByOriginVectors(cs.Origin, x,y,z);
var pA = (Point)a.Transform(CoordinateSystem.Identity(), newCS);
var pB = (Point)b.Transform(CoordinateSystem.Identity(), newCS);
var pC = (Point)c.Transform(CoordinateSystem.Identity(), newCS);
var pD = (Point)d.Transform(CoordinateSystem.Identity(), newCS);
package.PushTriangleVertex(pA.X, pA.Y, pA.Z);
package.PushTriangleVertex(pB.X, pB.Y, pB.Z);
package.PushTriangleVertex(pC.X, pC.Y, pC.Z);
package.PushTriangleVertex(pC.X, pC.Y, pC.Z);
package.PushTriangleVertex(pD.X, pD.Y, pD.Z);
package.PushTriangleVertex(pA.X, pA.Y, pA.Z);
}
}