public static void DrawPath(ICanvas2D dc, Matrix3x2 xform, string path, OutlineFillStyle style)
{
var shapes = ParseShapes(path);
foreach (var shape in shapes)
{
var points = shape.AsSpan();
if (points[0].Equals(points[points.Length - 1]))
{
points = points.Slice(0, points.Length - 1);
dc.DrawPolygon(points, style);
continue;
}
if (style.HasFill)
{
dc.DrawPolygon(points, style.FillColor);
}
if (style.HasOutline)
{
dc.DrawLines(points, style.OutlineWidth, style.OutlineColor);
}
}
}
public static void DrawTo(IScene3D context)
{
var color = ColorStyle.GetDefaultFrom(context, COLOR.Red);
var style = new OutlineFillStyle(color, COLOR.Black, 0.1f);
context.DrawSphere(Point3.UnitY, 2.5f, style);
context.DrawSegment((0, 4, 0), (0, 8, 0), 1.5f, (style, LineCapStyle.Round, LineCapStyle.Triangle));
for (int i = 0; i < 3; ++i)
{
var angle = (i * 120) * (float)Math.PI / 180f;
var h = new Point3((float)Math.Cos(angle), 0, (float)Math.Sin(angle));
var a = new Point3(0, 4, 0) + h * 0.5f;
var b = new Point3(0, 2, 0) + h * 2;
var c = new Point3(0, 0, 0) + h * 2;
var d = new Point3(0, -2, 0) + h * 2;
var e = new Point3(0, 0.15f, 0) + h * 0.5f;
context.DrawSegments(Point3.Array(a, b, c), 0.5f, (style, LineCapStyle.Triangle, LineCapStyle.Flat));
context.DrawSegment(c, d, 1f, (style, LineCapStyle.Triangle, LineCapStyle.Flat));
// connection to central sphere
context.DrawSegment((c + d) * 0.5f, e, 0.25f, (style, LineCapStyle.Triangle, LineCapStyle.Flat));
// exhaust plume
context.DrawSegment(d - Vector3.UnitY, d - Vector3.UnitY * 3, 0.5f, ((COLOR.White, COLOR.Blue.WithAlpha(150), 0.5f), LineCapStyle.Round, LineCapStyle.Triangle));
}
}
void IScene3D.DrawSphere(Point3 center, float diameter, OutlineFillStyle brush)
{
var c = center.XYZ;
if (!_FrustumNearPlane.IsInPositiveSideOfPlane(c))
{
return;
}
var pp = _ProjectPoint(c).SelectXY();
var pr = _ProjectRadius(c, diameter);
_RenderTarget.DrawEllipse(pp, pr, pr, brush);
}
/// <inheritdoc/>
public void DrawSphere(Point3 center, float diameter, OutlineFillStyle style)
{
_Check(); Decompose3D.DrawSphere(_Target, center, diameter, style);
}
/// <inheritdoc/>
public void DrawSphere(Point3 center, float diameter, OutlineFillStyle style)
{
Decompose3D.DrawSphere(this, center, diameter, style);
}
