private void DrawBillboard(Billboard entity)
{
inverseView = device.CameraInvertedViewMatrix;
look = inverseView.Translation - entity.Position;
AlignBillboard(entity);
DrawGeometry(entity);
}
private void DrawBillboard(Billboard entity)
{
inverseView = device.CameraInvertedViewMatrix;
look = inverseView.Translation - entity.Position;
AlignBillboard(entity);
DrawGeometry(entity);
}
private void DrawGeometry(Billboard entity)
{
look.Normalize();
Vector3D right = Vector3D.Cross(cameraUp, look);
Vector3D up = Vector3D.Cross(look, right);
Matrix transform = Matrix.Identity;
transform.Right = right;
transform.Up = look;
transform.Forward = up;
transform.Translation = entity.Position;
drawing.AddGeometry(entity.planeQuad.Geometry, entity.planeQuad.Material, transform);
}
private void DrawGeometry(Billboard entity)
{
look.Normalize();
Vector3D right = Vector3D.Cross(cameraUp, look);
Vector3D up = Vector3D.Cross(look, right);
Matrix transform = Matrix.Identity;
transform.Right = right;
transform.Up = look;
transform.Forward = up;
transform.Translation = entity.Position;
drawing.AddGeometry(entity.planeQuad.Geometry, entity.planeQuad.Material, transform);
}
private void AlignBillboard(Billboard entity)
{
if ((entity.mode & BillboardMode.FrontAxis) != 0)
AlignBillboardFrontAxis();
else if ((entity.mode & BillboardMode.UpAxis) != 0)
AlignBillboardUpAxis();
else if ((entity.mode & BillboardMode.RightAxis) != 0)
AlignBillboardRightAxis();
else if ((entity.mode & BillboardMode.Ground) != 0)
AlignBillboardGroundAxis();
else
DrawBillboardUnaligned();
}
protected override void Preview(string contentName)
{
var material = ContentLoader.Load<Material>(contentName);
var shaderWithFormat = material.Shader as ShaderWithFormat;
if (!shaderWithFormat.Format.Is3D)
{
var imageSize = material.DiffuseMap.PixelSize;
var aspectRatio = imageSize.Height / imageSize.Width;
currentDisplayEntity = new Sprite(material,
Rectangle.FromCenter(new Vector2D(0.5f, 0.5f), new Size(0.5f, 0.5f * aspectRatio)));
}
else if (shaderWithFormat.Format.HasUV)
currentDisplayEntity = new Billboard(Vector3D.Zero, Size.One, material);
}
private void AlignBillboard(Billboard entity)
{
if ((entity.mode & BillboardMode.FrontAxis) != 0)
{
AlignBillboardFrontAxis();
}
else if ((entity.mode & BillboardMode.UpAxis) != 0)
{
AlignBillboardUpAxis();
}
else if ((entity.mode & BillboardMode.RightAxis) != 0)
{
AlignBillboardRightAxis();
}
else if ((entity.mode & BillboardMode.Ground) != 0)
{
AlignBillboardGroundAxis();
}
else
{
DrawBillboardUnaligned();
}
}
