private void drawSpherePrimitives()
{
TangentVertex[] vertices;
short[] sIndices;
SphereMesh.CreateUnitSphereVerticesAndIndices(20, out vertices, out sIndices);
int[] indices = new int[sIndices.Length];
for (int i = 0; i < sIndices.Length; i++)
{
indices[i] = sIndices[i];
}
GraphicsDevice.VertexDeclaration = tangentVertexDeclaration;
GraphicsDevice.DrawUserIndexedPrimitives(PrimitiveType.TriangleList, vertices, 0, vertices.Length, sIndices,
0, sIndices.Length / 3);
}
public void TestSphereMesh()
{
XNAGame game = new XNAGame();
List <SphereMesh> meshes = new List <SphereMesh>();
TangentVertex[] vertices;
short[] indices;
SphereMesh.CreateUnitSphereVerticesAndIndices(4, out vertices, out indices);
bool wireframe = false;
game.InitializeEvent +=
delegate
{
SphereMesh mesh;
mesh = new SphereMesh(1, 4, Color.Green);
mesh.Initialize(game);
meshes.Add(mesh);
mesh = new SphereMesh(1, 5, Color.PowderBlue);
mesh.WorldMatrix = Matrix.CreateTranslation(3, 0, 0);
mesh.Initialize(game);
meshes.Add(mesh);
mesh = new SphereMesh(1, 12, Color.Yellow);
mesh.WorldMatrix = Matrix.CreateTranslation(6, 0, 0);
mesh.Initialize(game);
meshes.Add(mesh);
mesh = new SphereMesh(1, 30, Color.Turquoise);
mesh.WorldMatrix = Matrix.CreateTranslation(9, 0, 0);
mesh.Initialize(game);
meshes.Add(mesh);
mesh = new SphereMesh(40, 100, Color.Red);
mesh.WorldMatrix = Matrix.CreateTranslation(0, 0, -60);
mesh.Initialize(game);
meshes.Add(mesh);
mesh = new SphereMesh(40, 13, Color.Red);
mesh.WorldMatrix = Matrix.CreateTranslation(100, 0, -60);
mesh.Initialize(game);
meshes.Add(mesh);
};
game.UpdateEvent +=
delegate
{
if (game.Keyboard.IsKeyPressed(Microsoft.Xna.Framework.Input.Keys.W))
{
wireframe = !wireframe;
}
};
game.DrawEvent +=
delegate
{
game.LineManager3D.AddAABB(meshes[1].BoundingBox, Matrix.Identity, Color.Red);
int i;
if (game.Keyboard.IsKeyPressed(Microsoft.Xna.Framework.Input.Keys.R))
{
for (i = 0; i < meshes.Count; i++)
{
meshes[i].ReloadShader(game);
}
}
game.GraphicsDevice.RenderState.FillMode = FillMode.Solid;
game.GraphicsDevice.RenderState.CullMode = CullMode.CullCounterClockwiseFace;
if (!wireframe)
{
for (i = 1; i < meshes.Count; i++)
{
meshes[i].Render(game);
}
}
i = 0;
meshes[i].Color = Color.LightGreen;
meshes[i].Render(game);
game.GraphicsDevice.RenderState.CullMode = CullMode.CullClockwiseFace;
meshes[i].Color = Color.Red;
meshes[i].Render(game);
game.GraphicsDevice.RenderState.FillMode = FillMode.WireFrame;
game.GraphicsDevice.RenderState.CullMode = CullMode.CullCounterClockwiseFace;
meshes[i].Color = Color.Black;
meshes[i].Render(game);
if (wireframe)
{
for (i = 1; i < meshes.Count; i++)
{
meshes[i].Render(game);
}
}
for (i = 0; i < vertices.Length; i++)
{
game.LineManager3D.AddCenteredBox(vertices[i].pos, 0.05f, Color.Red);
}
};
game.Run();
}
