/// <summary>
/// Loads a Daggerfall flat (billboard).
/// </summary>
/// <param name="textureArchive">Texture archive index.</param>
/// <param name="textureRecord">Texture record index.</param>
/// <param name="textureFlags">Texture create flags.</param>
/// <param name="material">Material.</param>
/// <param name="startSize">Start size before scaling.</param>
/// <param name="finalSize">Final size after scaling.</param>
private void LoadDaggerfallFlat(
int textureArchive,
int textureRecord,
MaterialManager.TextureCreateFlags textureFlags,
out BaseMaterialEffect material,
out Vector2 startSize,
out Vector2 finalSize)
{
// Get path to texture file
string path = Path.Combine(
core.MaterialManager.Arena2Path,
TextureFile.IndexToFileName(textureArchive));
// Get size and scale of this texture
System.Drawing.Size size = TextureFile.QuickSize(path, textureRecord);
System.Drawing.Size scale = TextureFile.QuickScale(path, textureRecord);
// Set start size
startSize.X = size.Width;
startSize.Y = size.Height;
// Apply scale
int xChange = (int)(size.Width * (scale.Width / BlocksFile.ScaleDivisor));
int yChange = (int)(size.Height * (scale.Height / BlocksFile.ScaleDivisor));
finalSize.X = size.Width + xChange;
finalSize.Y = size.Height + yChange;
// Load material
material = core.MaterialManager.CreateDaggerfallMaterialEffect(
textureArchive,
textureRecord,
renderBillboards,
MaterialManager.DefaultBillboardFlags);
}
/// <summary>
/// Add billboard to collection.
/// </summary>
/// <param name="archive">Texture archive.</param>
/// <param name="record">Texture index.</param>
/// <param name="position">Position relative to parent entity.</param>
public void AddBillboard(int archive, int record, Vector3 position)
{
MaterialManager.TextureCreateFlags flags =
MaterialManager.TextureCreateFlags.Dilate |
MaterialManager.TextureCreateFlags.PreMultiplyAlpha |
MaterialManager.TextureCreateFlags.MipMaps;
// Load flat
BaseMaterialEffect material;
Vector2 startSize, finalSize;
LoadDaggerfallFlat(archive, record, flags, out material, out startSize, out finalSize);
// Calcuate final position
Vector3 finalPosition = new Vector3(position.X, -position.Y + (finalSize.Y / 2) - 4, -position.Z);
// Information about the billboard is packed into unused parts of the vertex format.
// This allows us to send a huge static batch of billboards and correctly position, rotate, and scale
// each one for the camera.
for (int i = 0; i < 4; i++)
{
billboardVertices[i].Tangent = finalPosition;
billboardVertices[i].Binormal = new Vector3(finalSize.X, finalSize.Y, 0);
}
// Add to batch
staticGeometry.AddToBuilder(material.ID, billboardVertices, billboardIndices, Matrix.Identity);
}
