void TryLoadSDFFont()
{
// Attempt to load an SDF alternative font
// Source SDF font atlas must be an equal POW2 width by height with glyphs arranged in 16x16 grid starting from ASCII 33
// The image must be pre-processed into an alpha-only SDF format prior to import
string sdfFontFilename = string.Format("{0}-SDF.png", font.ToString());
string sdfFontPath = Path.Combine(DaggerfallUI.Instance.FontsFolder, sdfFontFilename);
if (File.Exists(sdfFontPath))
{
// Load source image
Texture2D texture = new Texture2D(4, 4, TextureFormat.ARGB32, false);
if (!texture.LoadImage(File.ReadAllBytes(sdfFontPath), false))
{
Debug.LogErrorFormat("DaggerfallFont: Found a possible SDF font variant but was unable to load from path {0}", sdfFontPath);
return;
}
// Source texture width must equal height
if (texture.width != texture.height)
{
Debug.LogErrorFormat("DaggerfallFont: SDF variant width does not equal height {0}", sdfFontPath);
return;
}
// Source texture must be POW2
if (!PowerOfTwo.IsPowerOfTwo(texture.width))
{
Debug.LogErrorFormat("DaggerfallFont: SDF variant is not POW2 {0}", sdfFontPath);
return;
}
// Discover rects
int glyphDim = texture.width / sdfGlyphsPerRow;
Color32[] colors = texture.GetPixels32();
Rect[] rects = GenerateProportionalRects(ref colors, texture.width, texture.height, sdfGlyphsPerRow, sdfGlyphsPerRow, glyphDim, sdfGlyphCount);
// Store settings
sdfGlyphDimension = glyphDim;
sdfAtlasTexture = texture;
sdfAtlasRects = rects;
}
}
/// <summary>
/// Loads all vertices for this DFMesh.
/// </summary>
/// <param name="model">Model object.</param>
private void LoadVertices(ref ModelData model)
{
// Allocate vertex buffer
model.Vertices = new VertexPositionNormalTextureBump[model.DFMesh.TotalVertices];
// Track min and max vectors for bounding box
Vector3 min = new Vector3(0, 0, 0);
Vector3 max = new Vector3(0, 0, 0);
// Loop through all submeshes
int vertexCount = 0;
foreach (DFMesh.DFSubMesh dfSubMesh in model.DFMesh.SubMeshes)
{
// Get texture dimensions for this submesh
string archivePath = Path.Combine(arena2Path, TextureFile.IndexToFileName(dfSubMesh.TextureArchive));
System.Drawing.Size sz = TextureFile.QuickSize(archivePath, dfSubMesh.TextureRecord);
// Ensure texture dimensions are POW2 as TextureManager will be emitting POW2 textures
int width = (PowerOfTwo.IsPowerOfTwo(sz.Width)) ? sz.Width : PowerOfTwo.NextPowerOfTwo(sz.Width);
int height = (PowerOfTwo.IsPowerOfTwo(sz.Height)) ? sz.Height : PowerOfTwo.NextPowerOfTwo(sz.Height);
Vector2 scale = new Vector2(
(float)sz.Width / (float)width,
(float)sz.Height / (float)height);
// Loop through all planes in this submesh
foreach (DFMesh.DFPlane dfPlane in dfSubMesh.Planes)
{
// Copy each point in this plane to vertex buffer
foreach (DFMesh.DFPoint dfPoint in dfPlane.Points)
{
// Daggerfall uses a different axis layout than XNA.
// The Y and Z axes should be inverted so the model is displayed correctly.
// This also requires a change to winding order in LoadIndices().
Vector3 position = new Vector3(dfPoint.X, -dfPoint.Y, -dfPoint.Z) * GlobalScale;
Vector3 normal = new Vector3(dfPoint.NX, -dfPoint.NY, -dfPoint.NZ);
// Store vertex data
model.Vertices[vertexCount].Position = position;
model.Vertices[vertexCount].Normal = normal;
model.Vertices[vertexCount].TextureCoordinate = new Vector2(
(dfPoint.U / sz.Width) * scale.X,
(dfPoint.V / sz.Height) * scale.Y);
// Inrement count
vertexCount++;
// Compare min and max vectors
if (position.X < min.X)
{
min.X = position.X;
}
if (position.Y < min.Y)
{
min.Y = position.Y;
}
if (position.Z < min.Z)
{
min.Z = position.Z;
}
if (position.X > max.X)
{
max.X = position.X;
}
if (position.Y > max.Y)
{
max.Y = position.Y;
}
if (position.Z > max.Z)
{
max.Z = position.Z;
}
}
}
}
// Create bounding box
model.BoundingBox = new BoundingBox(min, max);
// Find model centre
Vector3 modelCenter;
modelCenter.X = min.X + (max.X - min.X) / 2;
modelCenter.Y = min.Y + (max.Y - min.Y) / 2;
modelCenter.Z = min.Z + (max.Z - min.Z) / 2;
// Find model radius
float modelRadius;
modelRadius = Vector3.Distance(min, max) / 2;
// Create bounding sphere
model.BoundingSphere = new BoundingSphere(modelCenter, modelRadius);
}