public CommandFileParser(String cmdFile, ContentManager meshLoader, System.Windows.Forms.TextBox statusArea, RTCore rt, SceneDatabase scene)
{
mStatusArea = statusArea;
mFullPath = System.IO.Path.GetFullPath(System.IO.Path.GetDirectoryName(cmdFile));
mParser = new XmlTextReader(cmdFile);
mParser.WhitespaceHandling = WhitespaceHandling.None;
ParserRead();
while (!IsEndElement("RayTracer_552"))
{
if (IsElement() && (!IsElement("RayTracer_552")))
{
if (IsElement("camera"))
{
RTCamera c = new RTCamera(this);
rt.SetCamera(c);
ParserRead();
}
else if (IsElement("sphere"))
{
RTSphere s = new RTSphere(this);
scene.AddGeom(s);
ParserRead();
}
else if (IsElement("rectangle"))
{
RTRectangle r = new RTRectangle(this);
scene.AddGeom(r);
ParserRead();
}
else if (IsElement("triangle"))
{
RTTriangle t = new RTTriangle(this);
scene.AddGeom(t);
ParserRead();
}
else if (IsElement("mesh"))
{
RTTriangle.ParseMeshForTriangles(this, meshLoader, scene);
ParserRead();
}
else if (IsElement("imagespec"))
{
ImageSpec s = new ImageSpec(this);
rt.SetImageSpec(s);
ParserRead();
}
else if (IsElement("rtspec"))
{
rt.Parse(this);
ParserRead();
}
else if (IsElement("material"))
{
RTMaterial m = new RTMaterial(this);
scene.AddMaterial(m);
ParserRead();
}
else if (IsElement("light"))
{
RTLight l = new RTLight(this);
scene.AddLight(l);
ParserRead();
}
else if (IsElement("texture"))
{
RTTexture t = new RTTexture(this);
scene.AddTexture(t);
ParserRead();
}
else
{
ParserError("Main Parser:");
}
}
else
{
ParserRead();
}
}
mParser.Close();
if (!mHasError)
{
mStatusArea.Text = "Parsing Completed!";
}
}
public CommandFileParser(String cmdFile, ContentManager meshLoader, System.Windows.Forms.TextBox statusArea, RTCore rt, SceneDatabase scene)
{
mStatusArea = statusArea;
mFullPath = System.IO.Path.GetFullPath(System.IO.Path.GetDirectoryName(cmdFile));
mParser = new XmlTextReader(cmdFile);
mParser.WhitespaceHandling = WhitespaceHandling.None;
ParserRead();
while (!IsEndElement("RayTracer_552"))
{
if (IsElement() && (!IsElement("RayTracer_552")) )
{
if (IsElement("camera"))
{
RTCamera c = new RTCamera(this);
rt.SetCamera(c);
ParserRead();
}
else if (IsElement("sphere"))
{
RTSphere s = new RTSphere(this);
scene.AddGeom(s);
ParserRead();
}
else if (IsElement("rectangle"))
{
RTRectangle r = new RTRectangle(this);
scene.AddGeom(r);
ParserRead();
}
else if (IsElement("triangle"))
{
RTTriangle t = new RTTriangle(this);
scene.AddGeom(t);
ParserRead();
}
else if (IsElement("mesh"))
{
RTTriangle.ParseMeshForTriangles(this, meshLoader, scene);
ParserRead();
}
else if (IsElement("imagespec"))
{
ImageSpec s = new ImageSpec(this);
rt.SetImageSpec(s);
ParserRead();
}
else if (IsElement("rtspec"))
{
rt.Parse(this);
ParserRead();
}
else if (IsElement("material"))
{
RTMaterial m = new RTMaterial(this);
scene.AddMaterial(m);
ParserRead();
}
else if (IsElement("light"))
{
RTLight l = new RTLight(this);
scene.AddLight(l);
ParserRead();
}
else if (IsElement("texture"))
{
RTTexture t = new RTTexture(this);
scene.AddTexture(t);
ParserRead();
}
else
ParserError("Main Parser:");
}
else
ParserRead();
}
mParser.Close();
if (!mHasError)
mStatusArea.Text = "Parsing Completed!";
}
static public void ParseMeshForTriangles(CommandFileParser parser, ContentManager meshLoader, SceneDatabase sceneDatabase)
{
String meshFileName = null;
int material = 0;
// has xform?
bool hasTransform = false;
Matrix xform = Matrix.Identity;
Matrix invT = Matrix.Identity;
#region Parse the command file
parser.ParserRead();
while (!parser.IsEndElement("mesh"))
{
if (parser.IsElement() && (!parser.IsElement("mesh")))
{
if (parser.IsElement("filename"))
{
meshFileName = parser.ReadString();
}
else if (parser.IsElement("xform"))
{
hasTransform = true;
xform = ParseTransform(parser);
}
else if (parser.IsElement("material"))
{
material = parser.ReadInt();
}
else
{
parser.ParserError("mesh");
}
}
else
{
parser.ParserRead();
}
}
#endregion
if (null == meshFileName)
{
parser.ParserError("No Mesh filename!");
return;
}
if (hasTransform)
{
invT = Matrix.Transpose(Matrix.Invert(xform));
}
Model model = meshLoader.Load <Model>(meshFileName);
Byte[] localVertexBuffer = null;
Int32[] localIndexBuffer = null;
Vector3[] vertexPosition = null;
Vector3[] normalAtVertex = null;
Vector2[] uvAtVertex = null;
bool hasPosition = false;
bool hasNormal = false;
bool hasUV = false;
foreach (ModelMesh mesh in model.Meshes)
{
foreach (ModelMeshPart part in mesh.MeshParts)
{
int numIndices = part.IndexBuffer.IndexCount; // total number of localIndexBuffer in the buffer
int numVertices = part.VertexBuffer.VertexCount; // total number of vertices in the buffer
#region Only need to load/translate these buffers once!
// *** REALLY? ***
if (null == localIndexBuffer)
{
vertexPosition = new Vector3[numVertices];
normalAtVertex = new Vector3[numVertices];
uvAtVertex = new Vector2[numVertices];
localIndexBuffer = LoadIndexBuffer(part);
int numBytes = numVertices * part.VertexBuffer.VertexDeclaration.VertexStride;
localVertexBuffer = new Byte[numBytes];
part.VertexBuffer.GetData <Byte>(localVertexBuffer);
VertexElement[] vertexElements = part.VertexBuffer.VertexDeclaration.GetVertexElements();
int bufferOffset = 0;
#region parse each vertex
// now get all the vertices
for (int vertCount = 0; vertCount < numVertices; vertCount++)
{ // parse through the elements
bufferOffset = vertCount * part.VertexBuffer.VertexDeclaration.VertexStride;
hasUV = false; // do this for each vertex
for (int e = 0; e < vertexElements.Length; e++)
{
switch (vertexElements[e].VertexElementUsage)
{
case VertexElementUsage.Position:
hasPosition = true;
// Vertex position
int vertexByteOffset = bufferOffset + vertexElements[e].Offset;
vertexPosition[vertCount].X = BitConverter.ToSingle(localVertexBuffer, vertexByteOffset); vertexByteOffset += 4;
vertexPosition[vertCount].Y = BitConverter.ToSingle(localVertexBuffer, vertexByteOffset); vertexByteOffset += 4;
vertexPosition[vertCount].Z = BitConverter.ToSingle(localVertexBuffer, vertexByteOffset);
break;
case VertexElementUsage.Normal:
hasNormal = true;
int normalByteOffset = bufferOffset + vertexElements[e].Offset;
normalAtVertex[vertCount].X = BitConverter.ToSingle(localVertexBuffer, normalByteOffset); normalByteOffset += 4;
normalAtVertex[vertCount].Y = BitConverter.ToSingle(localVertexBuffer, normalByteOffset); normalByteOffset += 4;
normalAtVertex[vertCount].Z = BitConverter.ToSingle(localVertexBuffer, normalByteOffset);
break;
case VertexElementUsage.TextureCoordinate:
if (!hasUV)
{ // if more than one defined, will only use the first one
hasUV = true;
int uvByteOffset = bufferOffset + vertexElements[e].Offset;
uvAtVertex[vertCount].X = BitConverter.ToSingle(localVertexBuffer, uvByteOffset); uvByteOffset += 4;
uvAtVertex[vertCount].Y = BitConverter.ToSingle(localVertexBuffer, uvByteOffset);
}
break;
// ignore all other cases
} // the switch on usage for parsing
} // for of vertexElements
} // for each vertex
#endregion
#region compute the transform for each vertex
// now do the transform
if (hasTransform)
{
for (int v = 0; v < numVertices; v++)
{
vertexPosition[v] = Vector3.Transform(vertexPosition[v], xform);
}
if (hasNormal)
{
for (int v = 0; v < numVertices; v++)
{
normalAtVertex[v] = Vector3.Transform(normalAtVertex[v], invT);
normalAtVertex[v] = Vector3.Normalize(normalAtVertex[v]);
}
}
}
#endregion
}
#endregion
// now start working on this particular part ...
int startIndex = part.StartIndex;
int vertexOffset = part.VertexOffset;
// start from part.StartIndex
int numTriangles = part.PrimitiveCount;
#region create the triangles
// now all vertice are stored.
// let's create the Triangles
for (int nthT = 0; nthT < numTriangles; nthT++)
{
Vector3[] vertices = new Vector3[3];
Vector2[] uv = new Vector2[3];
Vector3[] normals = null;
if (hasNormal)
{
normals = new Vector3[3];
}
#region copy vertex info
int indexOffset = startIndex + (nthT * 3);
for (int i = 0; i < 3; i++)
{
int index = vertexOffset + localIndexBuffer[indexOffset + i];
vertices[i] = vertexPosition[index];
uv[i] = uvAtVertex[index];
if (hasNormal)
{
normals[i] = normalAtVertex[index];
}
}
#endregion
// now create the new triangle
// watch out for bad triangles!!
if (hasPosition)
{
if (!hasNormal)
{
normalAtVertex = null;
}
Vector3 aVec = vertices[1] - vertices[0];
if (aVec.LengthSquared() > float.Epsilon)
{
Vector3 bVec = vertices[2] - vertices[0];
if (bVec.LengthSquared() > float.Epsilon)
{
RTTriangle t = new RTTriangle(vertices, normals, uv, material);
sceneDatabase.AddGeom(t);
}
}
}
}
#endregion
}
}
}
public static void ParseMeshForTriangles(CommandFileParser parser, ContentManager meshLoader, SceneDatabase sceneDatabase)
{
String meshFileName = null;
int material = 0;
// has xform?
bool hasTransform = false;
Matrix xform = Matrix.Identity;
Matrix invT = Matrix.Identity;
#region Parse the command file
parser.ParserRead();
while (!parser.IsEndElement("mesh"))
{
if (parser.IsElement() && (!parser.IsElement("mesh")))
{
if (parser.IsElement("filename"))
{
meshFileName = parser.ReadString();
}
else if (parser.IsElement("xform"))
{
hasTransform = true;
xform = ParseTransform(parser);
}
else if (parser.IsElement("material"))
material = parser.ReadInt();
else
parser.ParserError("mesh");
}
else
parser.ParserRead();
}
#endregion
if (null == meshFileName)
{
parser.ParserError("No Mesh filename!");
return;
}
if (hasTransform)
invT = Matrix.Transpose(Matrix.Invert(xform));
Model model = meshLoader.Load<Model>(meshFileName);
Byte[] localVertexBuffer = null;
Int32[] localIndexBuffer = null;
Vector3[] vertexPosition = null;
Vector3[] normalAtVertex = null;
Vector2[] uvAtVertex = null;
bool hasPosition = false;
bool hasNormal = false;
bool hasUV = false;
foreach (ModelMesh mesh in model.Meshes)
{
foreach (ModelMeshPart part in mesh.MeshParts)
{
int numIndices = part.IndexBuffer.IndexCount; // total number of localIndexBuffer in the buffer
int numVertices = part.VertexBuffer.VertexCount; // total number of vertices in the buffer
#region Only need to load/translate these buffers once!
// *** REALLY? ***
if (null == localIndexBuffer)
{
vertexPosition = new Vector3[numVertices];
normalAtVertex = new Vector3[numVertices];
uvAtVertex = new Vector2[numVertices];
localIndexBuffer = LoadIndexBuffer(part);
int numBytes = numVertices * part.VertexBuffer.VertexDeclaration.VertexStride;
localVertexBuffer = new Byte[numBytes];
part.VertexBuffer.GetData<Byte>(localVertexBuffer);
VertexElement[] vertexElements = part.VertexBuffer.VertexDeclaration.GetVertexElements();
int bufferOffset = 0;
#region parse each vertex
// now get all the vertices
for (int vertCount = 0; vertCount < numVertices; vertCount++)
{ // parse through the elements
bufferOffset = vertCount * part.VertexBuffer.VertexDeclaration.VertexStride;
hasUV = false; // do this for each vertex
for (int e = 0; e < vertexElements.Length; e++)
{
switch (vertexElements[e].VertexElementUsage)
{
case VertexElementUsage.Position:
hasPosition = true;
// Vertex position
int vertexByteOffset = bufferOffset + vertexElements[e].Offset;
vertexPosition[vertCount].X = BitConverter.ToSingle(localVertexBuffer, vertexByteOffset); vertexByteOffset += 4;
vertexPosition[vertCount].Y = BitConverter.ToSingle(localVertexBuffer, vertexByteOffset); vertexByteOffset += 4;
vertexPosition[vertCount].Z = BitConverter.ToSingle(localVertexBuffer, vertexByteOffset);
break;
case VertexElementUsage.Normal:
hasNormal = true;
int normalByteOffset = bufferOffset + vertexElements[e].Offset;
normalAtVertex[vertCount].X = BitConverter.ToSingle(localVertexBuffer, normalByteOffset); normalByteOffset += 4;
normalAtVertex[vertCount].Y = BitConverter.ToSingle(localVertexBuffer, normalByteOffset); normalByteOffset += 4;
normalAtVertex[vertCount].Z = BitConverter.ToSingle(localVertexBuffer, normalByteOffset);
break;
case VertexElementUsage.TextureCoordinate:
if (!hasUV)
{ // if more than one defined, will only use the first one
hasUV = true;
int uvByteOffset = bufferOffset + vertexElements[e].Offset;
uvAtVertex[vertCount].X = BitConverter.ToSingle(localVertexBuffer, uvByteOffset); uvByteOffset += 4;
uvAtVertex[vertCount].Y = BitConverter.ToSingle(localVertexBuffer, uvByteOffset);
}
break;
// ignore all other cases
} // the switch on usage for parsing
} // for of vertexElements
} // for each vertex
#endregion
#region compute the transform for each vertex
// now do the transform
if (hasTransform)
{
for (int v = 0; v < numVertices; v++)
vertexPosition[v] = Vector3.Transform(vertexPosition[v], xform);
if (hasNormal)
for (int v = 0; v < numVertices; v++)
{
normalAtVertex[v] = Vector3.Transform(normalAtVertex[v], invT);
normalAtVertex[v] = Vector3.Normalize(normalAtVertex[v]);
}
}
#endregion
}
#endregion
// now start working on this particular part ...
int startIndex = part.StartIndex;
int vertexOffset = part.VertexOffset;
// start from part.StartIndex
int numTriangles = part.PrimitiveCount;
#region create the triangles
// now all vertice are stored.
// let's create the Triangles
for (int nthT = 0; nthT < numTriangles; nthT++)
{
Vector3[] vertices = new Vector3[3];
Vector2[] uv = new Vector2[3];
Vector3[] normals = null;
if (hasNormal)
normals = new Vector3[3];
#region copy vertex info
int indexOffset = startIndex + (nthT * 3);
for (int i = 0; i < 3; i++)
{
int index = vertexOffset + localIndexBuffer[indexOffset + i];
vertices[i] = vertexPosition[index];
uv[i] = uvAtVertex[index];
if (hasNormal)
normals[i] = normalAtVertex[index];
}
#endregion
// now create the new triangle
// watch out for bad triangles!!
if (hasPosition)
{
if (!hasNormal)
normalAtVertex = null;
Vector3 aVec = vertices[1] - vertices[0];
if (aVec.LengthSquared() > float.Epsilon)
{
Vector3 bVec = vertices[2] - vertices[0];
if (bVec.LengthSquared() > float.Epsilon)
{
RTTriangle t = new RTTriangle(vertices, normals, uv, material);
sceneDatabase.AddGeom(t);
}
}
}
}
#endregion
}
}
}
