public Text(PrimitiveText text, object tag = null)
: base(text.Color, tag)
{
_primitive = text;
_primitives = new[] { _primitive };
_snapPoints = new[] { new EndPoint(Location) };
var rad = Rotation * MathHelper.DegreesToRadians;
var right = new Vector(Math.Cos(rad), Math.Sin(rad), 0.0).Normalize() * Width;
var up = Normal.Cross(right).Normalize() * Height;
BoundingBox = BoundingBox.FromPoints(
Location,
Location + right,
Location + up,
Location + right + up);
}
private static bool IsPointOnPrimitive(this PrimitiveText text, Point point)
{
// check for plane containment
var plane = new Plane(text.Location, text.Normal);
if (plane.Contains(point))
{
// check for horizontal/vertical containment
var right = Vector.RightVectorFromNormal(text.Normal);
var up = text.Normal.Cross(right).Normalize();
var projection = Matrix4.FromUnitCircleProjection(text.Normal, right, up, text.Location, 1.0, 1.0, 1.0).Inverse();
var projected = projection.Transform(point);
if (MathHelper.Between(0.0, text.Width, projected.X) &&
MathHelper.Between(0.0, text.Height, projected.Y))
{
return(true);
}
}
return(false);
}
private TextBlock CreatePrimitiveText(PrimitiveText text, CadColor?color)
{
var location = PlaneProjection.Transform(text.Location);
var t = new TextBlock();
t.Text = text.Value;
t.FontFamily = new FontFamily("Consolas");
t.FontSize = text.Height * 0.75; // 0.75 = 72ppi/96dpi
var trans = new TransformGroup();
trans.Children.Add(new ScaleTransform()
{
ScaleX = 1, ScaleY = -1
});
trans.Children.Add(new RotateTransform()
{
Angle = text.Rotation, CenterX = 0, CenterY = -text.Height
});
t.RenderTransform = trans;
Canvas.SetLeft(t, location.X);
Canvas.SetTop(t, location.Y + text.Height);
SetColor(t, TextBlock.ForegroundProperty, color);
return(t);
}
