public override RenderElement GetPrimaryRenderElement(RootGraphic rootgfx)
{
if (_lineRendeE == null)
{
VertexStore strokeVxs = new VertexStore();
VectorToolBox.GetFreeVxs(out var vxs);
VectorToolBox.GetFreeStroke(out var stroke, 3);
vxs.AddMoveTo(p0.Left, p0.Top);
vxs.AddLineTo(p1.Left, p1.Top);
stroke.MakeVxs(vxs, strokeVxs);
//---
//convert data in vxs to GraphicPath
//---
_lineRendeE = new LineRenderElement(rootgfx, 10, 10);
_lineRendeE._stroke = new VxsRenderVx(strokeVxs);
_lineRendeE.X0 = p0.Left;
_lineRendeE.Y0 = p0.Top;
_lineRendeE.X1 = p1.Left;
_lineRendeE.Y1 = p1.Top;
VectorToolBox.ReleaseVxs(ref vxs);
VectorToolBox.ReleaseStroke(ref stroke);
}
return(_lineRendeE);
}