private static void WriteQuad(TextureArea texture, Rectangle rect, IDataStream<TransformedColouredTexturedVertex> dataStream, float alpha)
{
rect = rect.Translate(-0.5f, -0.5f);
dataStream.WriteRange(
new[]
{
MakeVertex(rect.TopLeft, texture.AtlasTopLeft, alpha),
MakeVertex(rect.BottomRight, texture.AtlasBottomRight, alpha),
MakeVertex(rect.BottomLeft, texture.AtlasBottomLeft, alpha),
MakeVertex(rect.TopLeft, texture.AtlasTopLeft, alpha),
MakeVertex(rect.TopRight, texture.AtlasTopRight, alpha),
MakeVertex(rect.BottomRight, texture.AtlasBottomRight, alpha)
});
}
private static void WriteRectangle(Rectangle extents, Color4 colour, IDataStream<TransformedColouredVertex> dataStream)
{
dataStream.WriteRange(
new[]
{
new TransformedColouredVertex
{
Colour = colour,
Position = new Vector4(extents.BottomLeft.X, extents.BottomLeft.Y, 1.0f, 1.0f)
},
new TransformedColouredVertex
{
Colour = colour,
Position = new Vector4(extents.TopLeft.X, extents.TopLeft.Y, 1.0f, 1.0f)
},
new TransformedColouredVertex
{
Colour = colour,
Position = new Vector4(extents.TopRight.X, extents.TopRight.Y, 1.0f, 1.0f)
},
new TransformedColouredVertex
{
Colour = colour,
Position = new Vector4(extents.BottomLeft.X, extents.BottomLeft.Y, 1.0f, 1.0f)
},
new TransformedColouredVertex
{
Colour = colour,
Position = new Vector4(extents.TopRight.X, extents.TopRight.Y, 1.0f, 1.0f)
},
new TransformedColouredVertex
{
Colour = colour,
Position = new Vector4(extents.BottomRight.X, extents.BottomRight.Y, 1.0f, 1.0f)
}
});
}
private static void WriteCroppedQuad(TextureArea texture, Rectangle rect,
IDataStream<TransformedColouredTexturedVertex> dataStream, float horizontalCrop, float verticalCrop)
{
rect = rect.Translate(-0.5f, -0.5f).Scale(horizontalCrop, verticalCrop);
var atlasRect = new Rectangle(texture.AtlasTopLeft, texture.AtlasBottomRight);
atlasRect = atlasRect.Scale(horizontalCrop, verticalCrop);
dataStream.WriteRange(
new[]
{
MakeVertex(rect.TopLeft, atlasRect.TopLeft),
MakeVertex(rect.BottomRight, atlasRect.BottomRight),
MakeVertex(rect.BottomLeft, atlasRect.BottomLeft),
MakeVertex(rect.TopLeft, atlasRect.TopLeft),
MakeVertex(rect.TopRight, atlasRect.TopRight),
MakeVertex(rect.BottomRight, atlasRect.BottomRight)
});
}