public static void NURBS1()
{
// Draw a simple NURBS
// Example from this page:http://www.robthebloke.org/opengl_programming.html
var page = SampleEnvironment.Application.ActiveDocument.Pages.Add();
var points = new[]
{
new VA.Drawing.Point(10, 10),
new VA.Drawing.Point(5, 10),
new VA.Drawing.Point(-5, 5),
new VA.Drawing.Point(-10, 5),
new VA.Drawing.Point(-4, 10),
new VA.Drawing.Point(-4, 5),
new VA.Drawing.Point(-8, 1)
};
var origin = new VA.Drawing.Point(4, 4);
var scale = new VA.Drawing.Size(1.0/4.0, 1.0/4.0);
var controlpoints = points.Select(x => (x*scale) + origin).ToList();
var knots = new double[] {0, 0, 0, 0, 1, 2, 3, 4, 4, 4, 4};
var degree = 3;
var weights = controlpoints.Select(i => 1.0).ToList();
var s0 = page.DrawNURBS(controlpoints, knots, weights, degree);
s0.Text = "Generic NURBS shape";
}
public static void NURBS2()
{
// Draw a simple NURBS
// Example from Graham Wideman's book
var page = SampleEnvironment.Application.ActiveDocument.Pages.Add();
var points = new[]
{
new VA.Drawing.Point(0.2500, 0.2500),
new VA.Drawing.Point(0.2500, 0.7500),
new VA.Drawing.Point(0.4063, 0.8125),
new VA.Drawing.Point(0.5625, 0.3750),
new VA.Drawing.Point(0.5538, 0.8125),
new VA.Drawing.Point(0.7600, 0.7500),
new VA.Drawing.Point(0.7600, 0.2500)
};
var origin = new VA.Drawing.Point(4, 4);
var scale = new VA.Drawing.Size(4, 4);
var controlpoints = points.Select(x => (x*scale) + origin).ToList();
var knots = new double[] {0, 0, 0, 0, 25, 50, 75, 100, 100, 100, 100};
var degree = 3;
var Weights = controlpoints.Select(i => 1.0).ToList();
var s0 = page.DrawNURBS(controlpoints, knots, Weights, degree);
s0.Text = "Generic NURBS shape";
}
