public MeshGeometry(Scene scene, Mesh mesh)
{
this.scene = scene;
this.graphicsDevice = scene.GraphicsDevice;
this.mySilverlightEffect = scene.ContentManager.Load <SilverlightEffect>("CustomEffect");
// Cache effect parameters
worldViewProjectionParameter = mySilverlightEffect.Parameters["WorldViewProjection"];
worldParameter = mySilverlightEffect.Parameters["World"];
lightPositionParameter = mySilverlightEffect.Parameters["LightPosition"];
// Init static parameters
this.LightPosition = scene.LightPosition;
// Temporary lists
List <VertexPositionColorNormal> vertices = new List <VertexPositionColorNormal>();
List <ushort> indices = new List <ushort>();
Vector4 color = new Vector4(1, 1, 0.8f, 1);
for (int i = 0; i < mesh.Vertices.Count; i++)
{
var v = mesh.Vertices[i];
var n = mesh.Normals[i];
vertices.Add(new VertexPositionColorNormal(new Vector3((float)v.x, (float)v.y, (float)v.z), new Vector3((float)n.x, (float)n.y, (float)n.z), color));
}
foreach (var face in mesh.Triangles)
{
indices.Add((ushort)face.V0);
indices.Add((ushort)face.V1);
indices.Add((ushort)face.V2);
}
// Create a vertex buffer, and copy our vertex data into it.
vertexBuffer = new VertexBuffer(graphicsDevice, VertexPositionColorNormal.VertexDeclaration, vertices.Count, BufferUsage.None);
vertexBuffer.SetData(0, vertices.ToArray(), 0, vertices.Count, VertexPositionColorNormal.Stride);
// Create an index buffer, and copy our index data into it.
indexBuffer = new IndexBuffer(graphicsDevice, IndexElementSize.SixteenBits, indices.Count, BufferUsage.None);
indexBuffer.SetData(0, indices.ToArray(), 0, indices.Count);
// Statistics
VerticesCount = vertices.Count;
FaceCount = indices.Count / 3;
}
protected ShaderBase(Engine engine, string assetName)
{
_effect = engine.Content.Load <SilverlightEffect>(assetName);
}
public Cube(Scene scene, float size)
{
this.scene = scene;
this.graphicsDevice = scene.GraphicsDevice;
this.mySilverlightEffect = scene.ContentManager.Load <SilverlightEffect>("CustomEffect");
// Cache effect parameters
worldViewProjectionParameter = mySilverlightEffect.Parameters["WorldViewProjection"];
worldParameter = mySilverlightEffect.Parameters["World"];
lightPositionParameter = mySilverlightEffect.Parameters["LightPosition"];
// Init static parameters
this.LightPosition = new Vector3(1, 1, -10);
// Temporary lists
List <VertexPositionColorNormal> vertices = new List <VertexPositionColorNormal>();
List <ushort> indices = new List <ushort>();
// A cube has six faces, each one pointing in a different direction.
Vector3[] normals =
{
new Vector3(0, 0, 1),
new Vector3(0, 0, -1),
new Vector3(1, 0, 0),
new Vector3(-1, 0, 0),
new Vector3(0, 1, 0),
new Vector3(0, -1, 0)
};
// Create each face in turn.
foreach (Vector3 normal in normals)
{
// Get two vectors perpendicular to the face normal and to each other.
Vector3 side1 = new Vector3(normal.Y, normal.Z, normal.X);
Vector3 side2 = Vector3.Cross(normal, side1);
// Six indices (two triangles) per face.
indices.Add((ushort)vertices.Count);
indices.Add((ushort)(vertices.Count + 1));
indices.Add((ushort)(vertices.Count + 2));
indices.Add((ushort)vertices.Count);
indices.Add((ushort)(vertices.Count + 2));
indices.Add((ushort)(vertices.Count + 3));
// Four vertices per face.
Vector4 color = new Vector4(0, 1, 0, 1);
vertices.Add(new VertexPositionColorNormal((normal - side1 - side2) * size / 2, normal, color));
vertices.Add(new VertexPositionColorNormal((normal - side1 + side2) * size / 2, normal, color));
vertices.Add(new VertexPositionColorNormal((normal + side1 + side2) * size / 2, normal, color));
vertices.Add(new VertexPositionColorNormal((normal + side1 - side2) * size / 2, normal, color));
}
// Create a vertex buffer, and copy our vertex data into it.
vertexBuffer = new VertexBuffer(graphicsDevice, VertexPositionColorNormal.VertexDeclaration, vertices.Count, BufferUsage.None);
vertexBuffer.SetData(0, vertices.ToArray(), 0, vertices.Count, VertexPositionColorNormal.Stride);
// Create an index buffer, and copy our index data into it.
indexBuffer = new IndexBuffer(graphicsDevice, IndexElementSize.SixteenBits, indices.Count, BufferUsage.None);
indexBuffer.SetData(0, indices.ToArray(), 0, indices.Count);
// Statistics
VerticesCount = vertices.Count;
FaceCount = indices.Count / 3;
}
