/// <summary>
/// Update thumbnail to represent contained model.
/// </summary>
private void UpdateThumbnailTexture(ref Thumbnails thumb)
{
// Get dimensions
int thumbWidth = thumbBackgroundTexture.Width;
int thumbHeight = thumbBackgroundTexture.Height;
// Get model
if (thumb.model == null)
{
// Load model
thumb.model = host.ModelManager.GetModelData(thumb.key);
// Load texture for each submesh.
for (int sm = 0; sm < thumb.model.SubMeshes.Length; sm++)
{
// Load textures
thumb.model.SubMeshes[sm].TextureKey =
host.TextureManager.LoadTexture(
thumb.model.DFMesh.SubMeshes[sm].TextureArchive,
thumb.model.DFMesh.SubMeshes[sm].TextureRecord,
TextureManager.TextureCreateFlags.MipMaps |
TextureManager.TextureCreateFlags.PowerOfTwo);
}
// Centre model
Vector3 Min = thumb.model.BoundingBox.Min;
Vector3 Max = thumb.model.BoundingBox.Max;
float transX = (float)(Min.X + ((Max.X - Min.X) / 2));
float transY = (float)(Min.Y + ((Max.Y - Min.Y) / 2));
float transZ = (float)(Min.Z + ((Max.Z - Min.Z) / 2));
Matrix matrix = Matrix.CreateTranslation(-transX, -transY, -transZ);
// Rotate model
matrix *= Matrix.CreateRotationY(MathHelper.ToRadians(45));
matrix *= Matrix.CreateRotationX(MathHelper.ToRadians(10));
// Scale model
Vector3 size = new Vector3(Max.X - Min.X, Max.Y - Min.Y, Max.Z - Min.Z);
float scale = 400.0f / (float)((size.X + size.Y + size.Z) / 3);
matrix *= Matrix.CreateScale(scale);
// Apply matrix to model
thumb.model = host.ModelManager.TransformModelData(ref thumb.model, matrix);
// Store matrix
thumb.matrix = matrix;
}
// Create projection matrix
float aspectRatio = (float)thumb.rect.Width / (float)thumb.rect.Height;
projectionMatrix = Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, aspectRatio, nearPlaneDistance, farPlaneDistance);
// Set world matrix
effect.World = Matrix.CreateRotationY(MathHelper.ToRadians(thumb.rotation));
// Create texture to use as render target
RenderTarget2D renderTarget;
renderTarget = new RenderTarget2D(
host.GraphicsDevice,
thumbWidth,
thumbHeight,
false,
SurfaceFormat.Color,
DepthFormat.Depth16);
host.GraphicsDevice.SetRenderTarget(renderTarget);
// Render thumbnail components
host.GraphicsDevice.Clear(thumbViewBackgroundColor);
host.Core.SpriteBatch.Begin();
host.Core.SpriteBatch.Draw(thumbBackgroundTexture, new Rectangle(0, 0, thumbWidth, thumbHeight), Color.White);
host.Core.SpriteBatch.End();
DrawSingleModel(ref thumb.model);
// Restore default render target
host.GraphicsDevice.SetRenderTarget(null);
// Store updated values
thumb.texture = TextureManager.CloneRenderTarget2DToTexture2D(host.GraphicsDevice, renderTarget);
}