public void ParseTest()
{
var parser = new VrmlParser(new Vrml97Tokenizer(new StringReader(@"
#VRML V2.0 utf8
Shape {
geometry Cylinder {
bottom TRUE
height 20.0
radius 45.2
side TRUE
top FALSE
}
}")));
var scene = new VrmlScene();
parser.Parse(scene);
var cylinder = (scene.Root.Children[0] as ShapeNode).Geometry as CylinderNode;
Assert.AreEqual(true, cylinder.Bottom.Value);
Assert.AreEqual(20f, cylinder.Height.Value);
Assert.AreEqual(45.2f, cylinder.Radius.Value);
Assert.AreEqual(true, cylinder.Side.Value);
Assert.AreEqual(false, cylinder.Top.Value);
}
public void ParseTest()
{
var parser = new VrmlParser(new Vrml97Tokenizer(new StringReader(@"
#VRML V2.0 utf8
Shape {
appearance Appearance {
material Material {
diffuseColor 0.1 0.05 0.03
}
texture NULL
textureTransform TextureTransform {
}
}
}")));
var scene = new VrmlScene();
parser.Parse(scene);
AssertExt.AreEqual(new ShapeNode {
Appearance = new AppearanceNode {
Material = new MaterialNode {
DiffuseColor = new SFColor(0.1f, 0.05f, 0.03f)
},
TextureTransform = new TextureTransformNode()
}
}, scene.Root.Children[0]);
}
public void ParseTest()
{
var parser = new VrmlParser(new Vrml97Tokenizer(new StringReader(@"
#VRML V2.0 utf8
Shape {
appearance Appearance {
material Material {
diffuseColor 0.05 0.03 0.01
ambientIntensity 0
specularColor 0.07 0.12 0.12
shininess 0.06615
transparency 0
}
}
}")));
var scene = new VrmlScene();
parser.Parse(scene);
AssertExt.AreEqual(new ShapeNode {
Appearance = new AppearanceNode {
Material = new MaterialNode {
DiffuseColor = new SFColor(0.05f, 0.03f, 0.01f),
AmbientIntensity = 0,
SpecularColor = new SFColor(0.07f, 0.12f, 0.12f),
Shininess = 0.06615f,
Transparency = 0,
}
}
}, scene.Root.Children[0]);
}
public BaseNode[] createVrmlFromString(string vrmlSyntax)
{
Vrml97Tokenizer tokenizer = new Vrml97Tokenizer(new StringReader(vrmlSyntax));
VrmlParser parser = new VrmlParser(tokenizer);
MFNode node = new MFNode();
parser.Parse(node);
return(null);
}
private VrmlScene LoadScene(string name)
{
using (var stream = GetType().Assembly.GetManifestResourceStream(this.GetType(), name)) {
var tokenizer = new Vrml97Tokenizer(stream);
var parser = new VrmlParser(tokenizer);
var scene = new VrmlScene();
parser.Parse(scene);
return(scene);
}
}
public void ParseTest()
{
var parser = new VrmlParser(new Vrml97Tokenizer(new StringReader(@"
#VRML V2.0 utf8
Shape {
geometry Sphere {
radius 2
}
}")));
var scene = new VrmlScene();
parser.Parse(scene);
var sphere = (scene.Root.Children[0] as ShapeNode).Geometry as SphereNode;
Assert.AreEqual(2f, sphere.Radius.Value);
}
public void ParseTest()
{
var parser = new VrmlParser(new Vrml97Tokenizer(new StringReader(@"
#VRML V2.0 utf8
Shape {
geometry Box {
size 4 5 6
}
}")));
var scene = new VrmlScene();
parser.Parse(scene);
var box = (scene.Root.Children[0] as ShapeNode).Geometry as BoxNode;
Assert.AreEqual(4f, box.Size.X);
Assert.AreEqual(5f, box.Size.Y);
Assert.AreEqual(6f, box.Size.Z);
}
public void ParseTest()
{
var parser = new VrmlParser(new Vrml97Tokenizer(new StringReader(@"
#VRML V2.0 utf8
Shape {
appearance Appearance {
textureTransform TextureTransform {
}
}
}")));
var scene = new VrmlScene();
parser.Parse(scene);
AssertExt.AreEqual(new ShapeNode {
Appearance = new AppearanceNode {
TextureTransform = new TextureTransformNode {
}
}
}, scene.Root.Children[0]);
}
public void ParseTest()
{
var parser = new VrmlParser(new Vrml97Tokenizer(new StringReader(@"
#VRML V2.0 utf8
Shape {
geometry Cone {
bottomRadius 10.0
height 20.0
side TRUE
bottom FALSE
}
}")));
var scene = new VrmlScene();
parser.Parse(scene);
var cone = (scene.Root.Children[0] as ShapeNode).Geometry as ConeNode;
Assert.AreEqual(10f, cone.BottomRadius.Value);
Assert.AreEqual(20f, cone.Height.Value);
Assert.AreEqual(true, cone.Side.Value);
Assert.AreEqual(false, cone.Bottom.Value);
}
public void ParseTest()
{
var parser = new VrmlParser(new Vrml97Tokenizer(new StringReader(@"
#VRML V2.0 utf8
Shape {
geometry Sphere {
radius 2
}
appearance Appearance {
material NULL
texture NULL
textureTransform NULL
}
}")));
var scene = new VrmlScene();
parser.Parse(scene);
var shape = scene.Root.Children[0] as ShapeNode;
Assert.IsNotNull(shape.Geometry);
Assert.IsNotNull(shape.Appearance);
}
/// <summary>
/// Reads a VRML file at a specified path, parses the information, and returns the contained models.
/// </summary>
/// <param name="filePath">A full path to a valid VRML file.</param>
/// <returns>The extracted models.</returns>
public List <Mesh> Read(string filePath)
{
string fullPath = Environment.ExpandEnvironmentVariables(filePath);
Logger.Info("Parsing .wrl file at path \"" + fullPath + "\"");
FileInfo fileInfo = new FileInfo(fullPath);
if (!fileInfo.Exists)
{
Logger.Error("File \"" + fullPath + "\" does not exist!");
return(null);
}
// parse the Vrml file
VrmlScene scene;
using (var stream = new StreamReader(filePath))
{
VrmlParser parser = new VrmlParser(new VrmlTokenizer(stream));
scene = parser.Parse();
}
List <Mesh> meshes = new List <Mesh>();
MeshBuilder builder = new MeshBuilder();
Dictionary <int, uint> indexToVertexIndex = new Dictionary <int, uint>();
List <uint> triangleIndices = new List <uint>();
// Do a depth first search on the VRML scene to find all meshes
Stack <GroupingNode> toVisit = new Stack <GroupingNode>();
toVisit.Push(scene.Root);
HashSet <Node> visited = new HashSet <Node>(toVisit);
string currentDescription = "DefaultName";
while (toVisit.Count > 0)
{
GroupingNode node = toVisit.Pop();
// keep track of the most recent description in the heirarchy to name child meshes using
if (node is AnchorNode)
{
currentDescription = (node as AnchorNode).Description;
}
foreach (Node child in node.Children)
{
// If the child node may have children nodes we must visit it if we have not already
if (child is GroupingNode)
{
if (!visited.Contains(child))
{
toVisit.Push(child as GroupingNode);
visited.Add(child);
}
}
// If the node is a mesh extract it
if (child is ShapeNode)
{
ShapeNode shape = child as ShapeNode;
if (shape.Geometry.Node is IndexedFaceSetNode)
{
IndexedFaceSetNode indexFaceSet = shape.Geometry.Node as IndexedFaceSetNode;
CoordinateNode coords = indexFaceSet.Coord.Node as CoordinateNode;
// Must have at least one index given to be a mesh
if (indexFaceSet.CoordIndex.Length == 0)
{
continue;
}
// The indicies in the mesh we are building may not match those in the file if
// not all points from the coords are used, so maintain a mapping from original
// index in the file to the corresponding index in the mesh currently being built.
builder.Clear();
indexToVertexIndex.Clear();
triangleIndices.Clear();
foreach (SFInt32 index in indexFaceSet.CoordIndex)
{
if (index < 0)
{
builder.AddTriangle(new Triangle(triangleIndices[0], triangleIndices[1], triangleIndices[2]));
triangleIndices.Clear();
}
else
{
uint i;
if (!indexToVertexIndex.TryGetValue(index, out i))
{
SFVec3f pos = coords.Point.GetValue(index);
i = (uint)builder.VertexCount;
indexToVertexIndex.Add(index.Value, i);
builder.AddVertex(new Vector3(pos.X, pos.Y, pos.Z));
}
triangleIndices.Add(i);
}
}
// Generate the mesh and calculate the vertex normals
Mesh mesh = builder.CreateMesh(currentDescription);
meshes.Add(mesh);
Logger.Info($"Found Mesh: {mesh}");
}
}
}
}
Logger.Info("Finished parsing file");
return(meshes);
}
