public void Draw(FontLayout layout)
{
PrepareGroup();
if (layout.Layout.Count == 0)
{
return;
}
var areaSize = layout.Area.Size;
Vector2 origin = Vector2.Zero;
switch (layout.Alignment)
{
case AlignmentType.NorthWest: break;
case AlignmentType.SouthWest: origin.Y = areaSize.Y; break;
case AlignmentType.West: origin.Y = areaSize.Y / 2; break;
case AlignmentType.Center: origin = areaSize / 2; break;
case AlignmentType.North: origin.X = areaSize.X / 2; break;
case AlignmentType.NorthEast: origin.X = areaSize.X; break;
case AlignmentType.East: origin.X = areaSize.X; origin.Y = areaSize.Y / 2; break;
case AlignmentType.SouthEast: origin.X = areaSize.X; origin.Y = areaSize.Y; break;
case AlignmentType.South: origin.X = areaSize.X / 2; origin.Y = areaSize.Y; break;
}
foreach (var c in layout.Layout)
{
var entry = new BatchEntry();
entry.Texture = c.Texture;
entry.Color = c.Color;
entry.SourceRect = c.Source;
entry.Origin = Vector2.Zero;
entry.SpriteEffects = QuadEffects.RoundPositions;
// TODO: Optimize
entry.Transform =
Matrix.CreateTranslation(-origin.X + c.Offset.X, -origin.Y + c.Offset.Y, 0)
* Matrix.CreateScale(layout.Scale.X, layout.Scale.Y, 1)
* Matrix.CreateTranslation(origin.X + layout.Position.X, origin.Y + layout.Position.Y, 0);
currentBatch.Entries.Add(entry);
}
}
public QuadBatch(int defaultCapacity = 8192)
{
defaultEffect = new ColorTextureEffect(defaultVs, defaultFs);
currentEffect = defaultEffect;
capacity = defaultCapacity;
Debug.Assert(capacity > 0);
quads = new Quad[capacity];
indices = new ushort[capacity * 6];
fontLayout = new FontLayout();
InitIndices();
GL.GenBuffers(2, vertexBufferObjects);
//GL.BindBuffer(BufferTarget.ArrayBuffer, vertexBufferObjects[0]);
//GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(capacity * 6 * Vertex2Tex2Color.GetSize()), IntPtr.Zero, BufferUsageHint.DynamicDraw);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, vertexBufferObjects[1]);
GL.BufferData(BufferTarget.ElementArrayBuffer, (IntPtr)(indices.Length * sizeof(ushort)), indices, BufferUsageHint.StaticDraw);
}
/// <summary>
/// Create a copy of another layout.
/// </summary>
public FontLayout(FontLayout other)
: this()
{
Set(other.font, other.textString, other.Area, other.color, other.alignment, other.layoutMode, other.layoutOptions);
}
