public void AddSprite(Sprite2 sprite)
{
// If the RenderBatch is full, render what is already there and
// then start again
if (sprite.Vertices.Count + _currentBatchSize > MaxVertexNumber)
{
Draw();
}
// Add current Sprite to the batch
for(int i = 0; i < sprite.Vertices.Count; i++)
{
_vertices[_currentBatchSize + 1] = sprite.Vertices[i];
}
_currentBatchSize += sprite.Vertices.Count;
}
public void DrawSprite(Sprite2 sprite)
{
GL.Enable(EnableCap.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, sprite.Texture.Id);
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.Begin(PrimitiveType.Triangles);
{
for(int i = 0; i < sprite.Vertices.Count; i++)
{
DrawImmediateModeVertex(
sprite.Vertices[i].Position,
sprite.Vertices[i].Color,
sprite.Vertices[i].UVs);
}
}
GL.End();
}
public CharacterSprite CreateSprite(char c)
{
CharacterData data = Characters[c];
Sprite2 sprite = new Sprite2(this._texture);
// Setup UV Data
// We need to divide by the texture Width since OpenGL has UVs in range
// 0 to 1
Point topLeft = new Point(
(float)data.X / (float)_texture.Width,
(float)data.Y / (float)_texture.Height);
Point bottomRight = new Point(
topLeft.X + ((float)data.Width / (float)_texture.Width),
topLeft.Y + ((float)data.Height / (float)_texture.Height)
);
sprite.SetUVs(topLeft, bottomRight);
sprite.RenderWidth = data.Width;
sprite.RenderHeight = data.Height;
sprite.SetColor(new Color(1, 1, 1, 1));
return new CharacterSprite(sprite, data);
}
public CharacterSprite(Sprite2 sprite, CharacterData data)
{
this.Sprite = sprite;
this.Data = data;
}
