/// <summary>
/// This is called when the game should draw itself.
/// </summary>
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.DarkSlateGray);
GraphicsDevice.BlendState = BlendState.AlphaBlend;
GraphicsDevice.DepthStencilState = DepthStencilState.None;
BoundingFrustum frustum = new BoundingFrustum(
Matrix.CreateLookAt(new Vector3(0, 15, 15), Vector3.Zero, Vector3.UnitZ) *
Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, 1, 1, 10));
primitiveBatch.Begin(PrimitiveSortMode.Deferred, camera.View, camera.Projection);
{
primitiveBatch.DrawSphere(new BoundingSphere(Vector3.UnitX * 4, 1), 24, null, Color.White);
primitiveBatch.DrawGrid(1, 128, 128, null, Color.White * 0.25f);
primitiveBatch.DrawGrid(8, 16, 16, null, Color.Black);
primitiveBatch.DrawLine(new Vector3(5, 5, 0), new Vector3(5, 5, 5), Color.Blue);
primitiveBatch.DrawConstrainedBillboard(null, new Vector3(5, -5, 0), new Vector3(5, -5, 5), 0.05f, null, null, Color.Yellow);
primitiveBatch.DrawArrow(Vector3.Zero, Vector3.UnitZ * 2, null, Color.White);
primitiveBatch.DrawBox(new BoundingBox(-Vector3.One, Vector3.One), null, Color.White);
primitiveBatch.DrawSolidBox(new BoundingBox(-Vector3.One, Vector3.One), null, Color.Yellow * 0.2f);
primitiveBatch.DrawCircle(Vector3.UnitX * 2, 1, 24, null, Color.Yellow);
primitiveBatch.DrawSolidSphere(new BoundingSphere(Vector3.UnitX * 4, 1), 24, null, Color.Red * 0.2f);
primitiveBatch.DrawAxis(Matrix.CreateTranslation(-4, 0, 0));
primitiveBatch.DrawFrustum(frustum, null, Color.White);
primitiveBatch.DrawSolidFrustum(frustum, null, Color.Pink * 0.5f);
primitiveBatch.DrawCentrum(new Vector3(-5, -2, 0), 2, 1, 24, null, Color.WhiteSmoke * 0.5f);
primitiveBatch.DrawSolidCentrum(new Vector3(-5, -2, 0), 2, 1, 24, null, Color.LawnGreen * 0.3f);
primitiveBatch.DrawCylinder(new Vector3(-5, -6, 0), 2, 1, 24, null, Color.WhiteSmoke * 0.5f);
primitiveBatch.DrawSolidCylinder(new Vector3(-5, -6, 0), 2, 1, 24, null, Color.Lavender * 0.3f);
}
primitiveBatch.End();
base.Draw(gameTime);
}
