// TODO: Render with effect
/// <summary>Compute a bounding sphere for this mesh</summary>
public float ComputeBoundingSphere(out Vector3 center)
{
if (systemMemoryMesh == null)
{
throw new InvalidOperationException("There is no system memory mesh. Nothing to do here.");
}
// Get the object declaration
int strideSize = VertexInformation.GetFormatSize(systemMemoryMesh.VertexFormat);
// Lock the vertex buffer
GraphicsStream data = null;
try
{
data = systemMemoryMesh.LockVertexBuffer(LockFlags.ReadOnly);
// Now compute the bounding sphere
return(Geometry.ComputeBoundingSphere(data, systemMemoryMesh.NumberVertices,
systemMemoryMesh.VertexFormat, out center));
}
finally
{
// Make sure to unlock the vertex buffer
if (data != null)
{
systemMemoryMesh.UnlockVertexBuffer();
}
}
}
/// <summary>
/// Called once per frame, the call is the entry point for 3d rendering. This
/// function sets up render states, clears the viewport, and renders the scene.
/// </summary>
protected override void Render()
{
//Clear the backbuffer to a black color
device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, Color.Black, 1.0f, 0);
//Begin the scene
device.BeginScene();
device.VertexFormat = CustomVertex.PositionNormalColored.Format;
// set the vertexbuffer stream source
device.SetStreamSource(0, vertexBuffer, 0, VertexInformation.GetFormatSize(CustomVertex.PositionNormalColored.Format));
// set fill mode
device.RenderState.FillMode = FillMode.Solid;
// set the indices
device.Indices = indexBuffer;
//use the indices buffer
device.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, bufferSize * bufferSize, 0, vert_size / 3);
// Output statistics
drawingFont.DrawText(2, 1, System.Drawing.Color.Yellow, frameStats);
drawingFont.DrawText(2, 20, System.Drawing.Color.Yellow, deviceStats);
drawingFont.DrawText(2, 40, System.Drawing.Color.White, "Hit 'F' to generate new fractal.");
device.EndScene();
}
private void DrawEnvironment()
{
/*if ( RteEnabled ) {
* if ( envPolysIndices [0] == null ) {
* for ( int i = 0 ; i < 6 ; i++ )
* CreatePoly ( out envPolysIndices [0], out envPolysVertices [0] );
* }
*
* lastTextureId = -1;
* lastLightmapId = -1;
* ibNeedSet = true;
* bezierIbNeedSet = true;
*
* d3dDevice.SetTextureStageState ( 0, TextureStageStates.TextureCoordinateIndex, ( int ) TextureCoordinateIndex.PassThru );
* d3dDevice.SetTextureStageState ( 1, TextureStageStates.ColorOperation, ( int ) TextureOperation.Disable );
* d3dDevice.SetTransform ( TransformType.View , fpsCamera.ViewMatrix );
* d3dDevice.SetTransform ( TransformType.Projection, fpsCamera.ProjMatrix );
*
* for ( int i = 0 ; i < 1 ; i++ ) {
* d3dDevice.SetTransform ( TransformType.World, Matrix.Translation ( fpsCamera.Position + fpsCamera.Look * 5 + fpsCamera.Right * 2 - fpsCamera.Up ) );
* d3dDevice.DrawIndexedPrimitives ( PrimitiveType.TriangleList, 0, 0, 4, 0, 2 );
* }
* }*/
if (RteEnabled)
{
using (Mesh teapot = Mesh.Sphere(d3dDevice, 2.0f, 16, 16)) {
lastTextureId = -1;
lastLightmapId = -1;
d3dDevice.SetTexture(0, cubeTexture);
d3dDevice.SetTextureStageState(0, TextureStageStates.TextureCoordinateIndex, ( int )TextureCoordinateIndex.SphereMap);
d3dDevice.SetTextureStageState(0, TextureStageStates.ColorOperation, ( int )TextureOperation.SelectArg1);
d3dDevice.SetTextureStageState(0, TextureStageStates.ColorArgument1, ( int )TextureArgument.TextureColor);
/*d3dDevice.SetTextureStageState ( 0, TextureStageStates.TextureTransform, ( int ) TextureTransform.Count3 );
* d3dDevice.SamplerState [0].AddressU = TextureAddress.Clamp;
* d3dDevice.SamplerState [0].AddressV = TextureAddress.Clamp;
* d3dDevice.SamplerState [0].AddressW = TextureAddress.Clamp;*/
d3dDevice.SetTextureStageState(1, TextureStageStates.ColorOperation, ( int )TextureOperation.Disable);
d3dDevice.Transform.World = Matrix.Scaling(10.0f, 10.0f, 10.0f) * Matrix.Translation(teapotPos);
d3dDevice.Transform.View = fpsCamera.ViewMatrix;
d3dDevice.Transform.Projection = fpsCamera.ProjMatrix;
using (VertexBuffer vb = teapot.VertexBuffer) {
using (IndexBuffer ib = teapot.IndexBuffer) {
ibNeedSet = true;
bezierIbNeedSet = true;
d3dDevice.VertexFormat = teapot.VertexFormat;
d3dDevice.SetStreamSource(0, vb, 0, VertexInformation.GetFormatSize(teapot.VertexFormat));
d3dDevice.Indices = ib;
d3dDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, teapot.NumberVertices, 0, teapot.NumberFaces);
//teapot.DrawSubset ( 0 );
}
}
}
}
}
/// <summary>
/// Renders 3D text
/// </summary>
public void Render3DText(string text, RenderFlags flags)
{
if (device == null)
{
throw new System.ArgumentNullException();
}
// Set up renderstate
savedStateBlock.Capture();
drawTextStateBlock.Apply();
device.VertexFormat = CustomVertex.PositionNormalTextured.Format;
device.PixelShader = null;
device.SetStreamSource(0, vertexBuffer, 0, VertexInformation.GetFormatSize(CustomVertex.PositionNormalTextured.Format));
// Set filter states
if ((flags & RenderFlags.Filtered) != 0)
{
samplerState0.MinFilter = TextureFilter.Linear;
samplerState0.MagFilter = TextureFilter.Linear;
}
// Position for each text element
float x = 0.0f;
float y = 0.0f;
// Center the text block at the origin
if ((flags & RenderFlags.Centered) != 0)
{
System.Drawing.SizeF sz = GetTextExtent(text);
x = -(((float)sz.Width) / 10.0f) / 2.0f;
y = -(((float)sz.Height) / 10.0f) / 2.0f;
}
// Turn off culling for two-sided text
if ((flags & RenderFlags.TwoSided) != 0)
{
renderState.CullMode = Cull.None;
}
// Adjust for character spacing
x -= spacingPerChar / 10.0f;
float fStartX = x;
// Fill vertex buffer
GraphicsStream strm = vertexBuffer.Lock(0, 0, LockFlags.Discard);
int numTriangles = 0;
foreach (char c in text)
{
if (c == '\n')
{
x = fStartX;
y -= (textureCoords[0, 3] - textureCoords[0, 1]) * textureHeight / 10.0f;
}
if ((c - 32) < 0 || (c - 32) >= 128 - 32)
{
continue;
}
float tx1 = textureCoords[c - 32, 0];
float ty1 = textureCoords[c - 32, 1];
float tx2 = textureCoords[c - 32, 2];
float ty2 = textureCoords[c - 32, 3];
float w = (tx2 - tx1) * textureWidth / (10.0f * textureScale);
float h = (ty2 - ty1) * textureHeight / (10.0f * textureScale);
if (c != ' ')
{
strm.Write(new CustomVertex.PositionNormalTextured(new Vector3(x + 0, y + 0, 0), new Vector3(0, 0, -1), tx1, ty2));
strm.Write(new CustomVertex.PositionNormalTextured(new Vector3(x + 0, y + h, 0), new Vector3(0, 0, -1), tx1, ty1));
strm.Write(new CustomVertex.PositionNormalTextured(new Vector3(x + w, y + 0, 0), new Vector3(0, 0, -1), tx2, ty2));
strm.Write(new CustomVertex.PositionNormalTextured(new Vector3(x + w, y + h, 0), new Vector3(0, 0, -1), tx2, ty1));
strm.Write(new CustomVertex.PositionNormalTextured(new Vector3(x + w, y + 0, 0), new Vector3(0, 0, -1), tx2, ty2));
strm.Write(new CustomVertex.PositionNormalTextured(new Vector3(x + 0, y + h, 0), new Vector3(0, 0, -1), tx1, ty1));
numTriangles += 2;
if (numTriangles * 3 > (MaxNumfontVertices - 6))
{
// Unlock, render, and relock the vertex buffer
vertexBuffer.Unlock();
device.DrawPrimitives(PrimitiveType.TriangleList, 0, numTriangles);
strm = vertexBuffer.Lock(0, 0, LockFlags.Discard);
numTriangles = 0;
}
}
x += w - (2 * spacingPerChar) / 10.0f;
}
// Unlock and render the vertex buffer
vertexBuffer.Unlock();
if (numTriangles > 0)
{
device.DrawPrimitives(PrimitiveType.TriangleList, 0, numTriangles);
}
// Restore the modified renderstates
savedStateBlock.Apply();
}
/// <summary>
/// Saves a mesh to the custom serialized format
/// </summary>
/// <param name="stream">The stream to which to serialize</param>
/// <param name="mesh">The mesh to be serialized</param>
/// <param name="materials">The materials for subparts of the mesh
/// </param>
/// <param name="textures">The filenames for the textures on
/// subparts of the mesh</param>
public static void SaveMesh(Stream stream, Mesh mesh,
Material [] materials, string [] textures)
{
int flexibleVertexFormat;
int numberVertices;
byte [] vertices;
int numberIndices;
byte [] indices;
AttributeRange [] attributeRanges;
VertexFormats sourceVertexFormat;
VertexFormats sourceFormat;
IDisposable tempMesh;
tempMesh = null;
try
{
// Managed Direct3D mobile uses different Fvf defines than
// managed Direct3D for the desktop
// when this code is linked against the desktop version
// this will convert the Fvf to match MD3DM constants
// when this code is linked against MD3DM this section will
// not have changed anything.
// determine the necessary Fvf
sourceVertexFormat = mesh.VertexFormat;
int textureCount;
sourceFormat = VertexFormats.Position;
flexibleVertexFormat = 0;
if ((sourceVertexFormat & VertexFormats.Normal) != 0)
{
flexibleVertexFormat |= md3dmFvfNormal;
sourceFormat |= VertexFormats.Normal;
}
if ((sourceVertexFormat & VertexFormats.Diffuse) != 0)
{
flexibleVertexFormat |= md3dmFvfDiffuse;
sourceFormat |= VertexFormats.Diffuse;
}
if ((sourceVertexFormat & VertexFormats.Specular) != 0)
{
flexibleVertexFormat |= md3dmFvfDiffuse;
sourceFormat |= VertexFormats.Specular;
}
// determine number of textures
textureCount = (int)(sourceVertexFormat &
VertexFormats.TextureCountMask) >>
(int)VertexFormats.TextureCountShift;
//limit to 4 textures
if (textureCount > 4)
{
textureCount = 4;
}
// continue setting up necessary fvf
sourceFormat |= (VertexFormats)(textureCount <<
(int)VertexFormats.TextureCountShift);
flexibleVertexFormat |=
(textureCount << md3dmFvfTextureCountShift);
if (sourceFormat != sourceVertexFormat)
{
mesh = mesh.Clone(mesh.Options.Value, sourceFormat,
mesh.Device);
tempMesh = (IDisposable)mesh;
}
attributeRanges = mesh.GetAttributeTable();
if (attributeRanges == null)
{
throw new MeshSerializationException(
"No Attribute table present");
}
// determine number of vertices and create buffer
numberVertices = mesh.NumberVertices;
vertices = new byte[numberVertices *
VertexInformation.GetFormatSize(sourceFormat)];
// copy vertices to buffer
mesh.VertexBuffer.Lock(0, vertices.Length,
LockFlags.None).Read(vertices, 0, vertices.Length);
mesh.VertexBuffer.Unlock();
// determine number of indices
numberIndices = mesh.NumberFaces * 3;
// create index data buffer
indices = new byte[numberIndices *
(mesh.Options.Use32Bit ? 4 : 2)];
// fill index data into buffer
mesh.IndexBuffer.Lock(0, indices.Length,
LockFlags.None).Read(indices, 0, indices.Length);
mesh.IndexBuffer.Unlock();
// write the data out to file
MeshLoader.SaveMeshData(stream, flexibleVertexFormat,
numberVertices, vertices,
numberIndices, indices, attributeRanges, materials,
textures);
}
finally
{
if (tempMesh != null)
{
tempMesh.Dispose();
}
}
}
/// <summary>
/// Loads a mesh from the given stream
/// </summary>
/// <param name="device">A d3d mobile device which will be displaying
/// the mesh</param>
/// <param name="stream">The stream containing serialized mesh data
/// </param>
/// <param name="flags">Option flags</param>
/// <param name="materials">Output array is filled with any needed
/// materials</param>
/// <param name="textures">Output array is filled with the filenames
/// of any needed textures</param>
/// <returns></returns>
public static Mesh LoadMesh(Device device, Stream stream,
MeshFlags flags, out Material [] materials,
out string [] textures)
{
if (device == null)
{
throw new ArgumentException("Argument device was invalid");
}
if (stream == null)
{
throw new ArgumentException("Argument stream was invalid");
}
byte [] rgb;
byte [] rgbIb;
byte [] rgbVb;
Mesh meshRet;
VertexBuffer vb;
IndexBuffer ib;
int fileMagicNumber;
int fileVersion;
VertexFormats flexibleVertexFormat;
int numberVertices;
int numberIndices;
int is16BitIndices;
int numberMaterials;
int numberAttrRanges;
int offsetVertex;
int offsetIndices;
int offsetAttrRange;
int offsetMaterial;
int bytesMaterials;
int bytesIndices;
int [] attributeTable;
AttributeRange [] attributeRanges;
rgb = new byte [512];
stream.Seek(0, SeekOrigin.Begin);
// Read header, any errors will be propagated up
stream.Read(rgb, 0, sizeofHeader);
// read and verify magic number
fileMagicNumber = BitConverter.ToInt32(rgb, 0);
if (fileMagicNumber != magicNumber)
{
throw new MeshSerializationException(
"The serialized data does not represent a mesh");
}
// read and verify version
fileVersion = BitConverter.ToInt32(rgb, 4);
if (fileVersion != versionNumber)
{
throw new MeshSerializationException(
"The format version was not recognized");
}
flexibleVertexFormat = (VertexFormats)
BitConverter.ToInt32(rgb, 8);
numberVertices = BitConverter.ToInt32(rgb, 12);
numberIndices = BitConverter.ToInt32(rgb, 16);
is16BitIndices = BitConverter.ToInt32(rgb, 20);
numberMaterials = BitConverter.ToInt32(rgb, 24);
numberAttrRanges = BitConverter.ToInt32(rgb, 28);
offsetVertex = BitConverter.ToInt32(rgb, 32);
offsetIndices = BitConverter.ToInt32(rgb, 36);
offsetAttrRange = BitConverter.ToInt32(rgb, 40);
offsetMaterial = BitConverter.ToInt32(rgb, 44);
bytesMaterials = BitConverter.ToInt32(rgb, 48);
// verify number of vertices
if (numberVertices < 0)
{
throw new MeshSerializationException(
String.Format(CultureInfo.InvariantCulture,
"Invalid number of vertices: {0}", numberVertices));
}
// verify number of indices
if (numberIndices < 0 || numberIndices % 3 != 0)
{
throw new MeshSerializationException(
String.Format(CultureInfo.InvariantCulture,
"Invalid number of indices: {0}", numberIndices));
}
// verify number of materials
if (numberMaterials < 0)
{
throw new MeshSerializationException(
String.Format(CultureInfo.InvariantCulture,
"Invalid number of materials: {0}", numberMaterials));
}
// verify number of attribute ranges
if (numberAttrRanges < 0)
{
throw new MeshSerializationException(
String.Format(CultureInfo.InvariantCulture,
"Invalid number of attribute ranges: {0}",
numberAttrRanges));
}
// determine number of index bytes and verify Is16BitIndices
if (is16BitIndices == 1)
{
bytesIndices = numberIndices * 2;
}
else if (is16BitIndices == 0)
{
bytesIndices = numberIndices * 4;
}
else
{
throw new MeshSerializationException(
String.Format(CultureInfo.InvariantCulture,
"Invalid value for is16BitIndices: {0}",
is16BitIndices));
}
// Managed Direct3D mobile uses different Fvf defines than
// managed Direct3D for the desktop
// when this code is linked against the desktop version
// this will convert the Fvf to match MD3DM constants
// when this code is linked against MD3DM this section will
// not have changed anything.
// determine the necessary Fvf
int sourceFormat = (int)flexibleVertexFormat;
int textureCount;
flexibleVertexFormat = VertexFormats.Position;
if ((sourceFormat & md3dmFvfNormal) != 0)
{
flexibleVertexFormat |= VertexFormats.Normal;
}
if ((sourceFormat & md3dmFvfDiffuse) != 0)
{
flexibleVertexFormat |= VertexFormats.Diffuse;
}
if ((sourceFormat & md3dmFvfSpecular) != 0)
{
flexibleVertexFormat |= VertexFormats.Specular;
}
// determine number of textures
textureCount = (sourceFormat &
(int)VertexFormats.TextureCountMask)
>> (int)md3dmFvfTextureCountShift;
//limit to 4 textures
if (textureCount > 4)
{
textureCount = 4;
}
// continue setting up necessary Fvf
flexibleVertexFormat |= (VertexFormats)(
textureCount << (int)VertexFormats.TextureCountShift);
int bytesVertices =
VertexInformation.GetFormatSize(flexibleVertexFormat) *
numberVertices;
// Verify none of the data regions overlap
// the material section is variable size so we can't check
// that one yet
if (!((offsetVertex >= sizeofHeader) &&
(offsetIndices >= offsetVertex + bytesVertices) &&
(offsetAttrRange >= offsetIndices + bytesIndices) &&
(offsetMaterial >= offsetAttrRange + numberAttrRanges *
sizeofAttributeRange) &&
(stream.Length >= offsetMaterial + bytesMaterials)))
{
throw new MeshSerializationException(
"The data regions are not " +
"within the stream or overlap");
}
// create our data tables
materials = new Material[numberMaterials];
textures = new string[numberMaterials];
attributeRanges = new AttributeRange[numberAttrRanges];
attributeTable = new int[numberIndices / 3];
// move to the attribute range section, propagate up
// any exception
stream.Seek(offsetAttrRange, SeekOrigin.Begin);
// parse attribute ranges
for (int i = 0; i < numberAttrRanges; i++)
{
int attribId;
int faceStart;
int faceCount;
int vertexStart;
int vertexCount;
// read in the attribute range data
stream.Read(rgb, 0, sizeofAttributeRange);
attribId = BitConverter.ToInt32(rgb, 0);
faceStart = BitConverter.ToInt32(rgb, 4);
faceCount = BitConverter.ToInt32(rgb, 8);
vertexStart = BitConverter.ToInt32(rgb, 12);
vertexCount = BitConverter.ToInt32(rgb, 16);
// verify the data
if ((vertexStart < 0 || vertexCount < 0 ||
vertexStart + vertexCount > numberVertices) ||
(faceStart < 0 || faceCount < 0 ||
(faceStart + faceCount) * 3 > numberIndices))
{
throw new ApplicationException(
"Invalid attribute range");
}
// store the validated data
attributeRanges[i].AttributeId = attribId;
attributeRanges[i].FaceStart = faceStart;
attributeRanges[i].FaceCount = faceCount;
attributeRanges[i].VertexStart = vertexStart;
attributeRanges[i].VertexCount = vertexCount;
for (int j = faceStart; j < faceStart + faceCount; j++)
{
attributeTable[j] = attribId;
}
}
// move to the material section
stream.Seek(offsetMaterial, SeekOrigin.Begin);
// parse materials
for (int i = 0; i < numberMaterials; i++)
{
int cbTexture;
// verify that we aren't reading past the end of the stream
// its possible an invalid filename length the
if (stream.Position + sizeofMaterial > stream.Length)
{
throw new MeshSerializationException(
"Material data region is" +
" corrupt");
}
// read in the material color data
stream.Read(rgb, 0, sizeofMaterial);
materials[i].DiffuseColor = new ColorValue(
BitConverter.ToSingle(rgb, 0),
BitConverter.ToSingle(rgb, 4),
BitConverter.ToSingle(rgb, 8),
BitConverter.ToSingle(rgb, 12));
materials[i].AmbientColor = new ColorValue(
BitConverter.ToSingle(rgb, 16),
BitConverter.ToSingle(rgb, 20),
BitConverter.ToSingle(rgb, 24),
BitConverter.ToSingle(rgb, 28));
materials[i].SpecularColor = new ColorValue(
BitConverter.ToSingle(rgb, 32),
BitConverter.ToSingle(rgb, 36),
BitConverter.ToSingle(rgb, 40),
BitConverter.ToSingle(rgb, 44));
materials[i].SpecularSharpness =
BitConverter.ToSingle(rgb, 48);
// read in the size of the texture filename
cbTexture = BitConverter.ToInt32(rgb, 52);
// verify that the texture filename has a valid length
if (cbTexture < 0 || stream.Position + cbTexture >
stream.Length)
{
throw new MeshSerializationException(
"Material data region is corrupt");
}
// read the texture filename
if (cbTexture > 0)
{
stream.Read(rgb, 0, cbTexture);
textures[i] = Encoding.Unicode.GetString(rgb, 0,
cbTexture);
}
}
// create data buffers
rgbIb = new byte[bytesIndices];
rgbVb = new byte[bytesVertices];
// read in the index data
stream.Seek(offsetIndices, SeekOrigin.Begin);
stream.Read(rgbIb, 0, rgbIb.Length);
// read in the vertex data
stream.Seek(offsetVertex, SeekOrigin.Begin);
stream.Read(rgbVb, 0, rgbVb.Length);
// set the use 32 bit flag appropriately
flags = (flags & ~(MeshFlags.Use32Bit)) |
((is16BitIndices == 0) ? MeshFlags.Use32Bit : 0);
// create a new empty mesh
meshRet = new Mesh(numberIndices / 3, numberVertices,
flags, flexibleVertexFormat, device);
try
{
// create the index and vertex buffer
vb = meshRet.VertexBuffer;
ib = meshRet.IndexBuffer;
// write the vertex data
vb.Lock(0, bytesVertices, LockFlags.None).Write(rgbVb, 0,
bytesVertices);
vb.Unlock();
// write the index data
ib.Lock(0, rgbIb.Length, LockFlags.None).Write(rgbIb, 0,
rgbIb.Length);
ib.Unlock();
// set the attributes
meshRet.LockAttributeBuffer(LockFlags.None);
meshRet.UnlockAttributeBuffer(attributeTable);
meshRet.SetAttributeTable(attributeRanges);
}
catch (DirectXException e)
{
// release the mesh if anything went wrong
meshRet.Dispose();
meshRet = null;
throw e;
}
return(meshRet);
}
