public override void ViewportDraw(AcGi.ViewportDraw vd)
{
int glyphPixels = CustomObjectSnapMode.GlyphSize;
var glyphSize = vd.Viewport.GetNumPixelsInUnitSquare(_pt);
// Calculate the size of the glyph in WCS
// (use for text height factor)
// We'll add 10% to the size, as otherwise
// it looks a little too small
double glyphHeight =
(glyphPixels / glyphSize.Y) * 1.1;
string text = "¼";
// Translate the X-axis of the DCS to WCS
// (for the text direction) and the snap
// point itself (for the text location)
var dist = -glyphHeight / 2.0;
var offset = new Vector3d(dist, dist, 0);
var e2w = vd.Viewport.EyeToWorldTransform;
var dir = Vector3d.XAxis.TransformBy(e2w);
var pt = (_pt + offset).TransformBy(e2w);
// Draw the centered text representing the glyph
var style = new AcGi.TextStyle();
var fd =
new AcGi.FontDescriptor("txt.shx", false, false, 0, 0);
style.Font = fd;
style.TextSize = glyphHeight;
vd.Geometry.Text(
pt,
vd.Viewport.ViewDirection,
dir,
text,
false,
style
);
}
protected override void SubViewportDraw(AcGi.ViewportDraw vd)
{
int glyphSize = CustomObjectSnapMode.GlyphSize;
var glyphPixels = vd.Viewport.GetNumPixelsInUnitSquare(_pt);
double glyphHeight = (glyphSize / glyphPixels.Y) * 1.1;
string text = "¼";
var dist = -glyphHeight / 2.0;
var offset = new Vector3d(dist, dist, 0);
var e2w = vd.Viewport.EyeToWorldTransform;
var dir = Vector3d.XAxis.TransformBy(e2w);
var pt = (_pt + offset).TransformBy(e2w);
var style = new AcGi.TextStyle();
var fd = new AcGi.FontDescriptor("txt.shx", false, false, 0, 0);
style.Font = fd;
style.TextSize = glyphHeight;
vd.Geometry.Text(pt, vd.Viewport.ViewDirection, dir, text, false, style);
}