/// <summary>
/// Draws a billboard in world space facing the +Z direction of the matrix specified. Units in meters, matrix
/// transform notwithstanding.
/// </summary>
public void Draw(ref CroppedBox box, MatrixD[] matrixRef)
{
FlatQuad quad = new FlatQuad()
{
Point0 = box.bounds.Max,
Point1 = new Vector2(box.bounds.Max.X, box.bounds.Min.Y),
Point2 = box.bounds.Min,
Point3 = new Vector2(box.bounds.Min.X, box.bounds.Max.Y),
};
if (skewRatio != 0f)
{
Vector2 start = quad.Point0, end = quad.Point3,
offset = (end - start) * skewRatio * .5f;
quad.Point0 = Vector2.Lerp(start, end, skewRatio) - offset;
quad.Point3 = Vector2.Lerp(start, end, 1f + skewRatio) - offset;
quad.Point1 -= offset;
quad.Point2 -= offset;
}
BillBoardUtils.AddQuad(ref quad, ref materialData, matrixRef, box.mask);
}
/// <summary>
/// Queues a quad billboard for rendering
/// </summary>
public static void AddQuad(ref FlatQuad quad, ref BoundedQuadMaterial mat, MatrixD[] matrixRef, BoundingBox2?mask = null)
{
var bbPool = instance.bbPoolBack;
var bbDataBack = instance.flatTriangleList;
var matList = instance.matrixBuf;
var matTable = instance.matrixTable;
// Find matrix index in table or add it
int matrixID;
if (!matTable.TryGetValue(matrixRef, out matrixID))
{
matrixID = matList.Count;
matList.Add(matrixRef[0]);
matTable.Add(matrixRef, matrixID);
}
// Mask bounding check. Null mask if not intersecting.
BoundingBox2? maskBox = mask;
ContainmentType containment = ContainmentType.Contains;
if (maskBox != null)
{
BoundingBox2 bounds = new BoundingBox2(quad.Point2, quad.Point0);
maskBox.Value.Contains(ref bounds, out containment);
if (containment == ContainmentType.Contains)
{
maskBox = null;
}
}
if (containment != ContainmentType.Disjoint)
{
int indexL = bbDataBack.Count,
indexR = bbDataBack.Count + 1;
var bbL = new FlatTriangleBillboardData
{
Item1 = BlendTypeEnum.PostPP,
Item2 = new Vector2I(bbDataBack.Count, matrixID),
Item3 = mat.textureID,
Item4 = new MyTuple <Vector4, BoundingBox2?>(mat.bbColor, maskBox),
Item5 = new MyTuple <Vector2, Vector2, Vector2>
(
new Vector2(mat.texBounds.Max.X, mat.texBounds.Min.Y), // 1
mat.texBounds.Max, // 0
new Vector2(mat.texBounds.Min.X, mat.texBounds.Max.Y) // 3
),
Item6 = new MyTuple <Vector2, Vector2, Vector2>
(
quad.Point0,
quad.Point1,
quad.Point2
),
};
var bbR = new FlatTriangleBillboardData
{
Item1 = BlendTypeEnum.PostPP,
Item2 = new Vector2I(bbDataBack.Count + 1, matrixID),
Item3 = mat.textureID,
Item4 = new MyTuple <Vector4, BoundingBox2?>(mat.bbColor, maskBox),
Item5 = new MyTuple <Vector2, Vector2, Vector2>
(
new Vector2(mat.texBounds.Max.X, mat.texBounds.Min.Y), // 1
new Vector2(mat.texBounds.Min.X, mat.texBounds.Max.Y), // 3
mat.texBounds.Min // 2
),
Item6 = new MyTuple <Vector2, Vector2, Vector2>
(
quad.Point0,
quad.Point2,
quad.Point3
),
};
bbDataBack.Add(bbL);
bbDataBack.Add(bbR);
if (indexR >= bbPool.Count)
{
instance.AddNewBB(indexR - (bbPool.Count - 1));
}
MyTransparentGeometry.AddBillboard(bbPool[indexL], false);
MyTransparentGeometry.AddBillboard(bbPool[indexR], false);
}
}
