democurve.m

非均匀有理B样条的matlab程序

function democurve
% Shows a simple test curve.
% 

% D.M. Spink
% Copyright (c) 2000

crv = nrbtestcrv;

% plot the control points
plot(crv.coefs(1,:),crv.coefs(2,:),'ro');
title('Arbitrary Test 2D Curve.');
hold on;
plot(crv.coefs(1,:),crv.coefs(2,:),'r--');

% plot the nurbs curve
nrbplot(crv,48);
hold off;

crv.knots(3)=0.1;
figure
% plot the control points
plot(crv.coefs(1,:),crv.coefs(2,:),'ro');
title('Arbitrary Test 2D Curve.');
hold on;
plot(crv.coefs(1,:),crv.coefs(2,:),'r--');

% plot the nurbs curve
nrbplot(crv,48);
hold off;