rsmak.m

演示matlab曲线拟和与插直的基本方法

% RSMAK   rB-宆偺桳棟僗僾儔僀儞偺慻棫偰
%
% RSMAK(KNOTS,COEFS) 偼丄擖椡偵傛偭偰巜掕偝傟偨桳棟僗僾儔僀儞偺
% rB-宆傪弌椡偟傑偡丅
%
% 桳棟僗僾儔僀儞偺B-宆偲偲偟偰昗幆偝傟傞偙偲丄偡側傢偪丄暘曣偑僗僾儔僀儞
% 偺嵟廔梫慺偵傛偭偰梌偊傜傟丄暘巕偑巆傞梫慺偱婰弎偝傟傞傛偆側桳棟僗僾
% 儔僀儞偱偁傞偙偲傪彍偄偰丄偙傟偼尩枾偵 SPMAK(KNOTS,COEFS) 偺弌椡偱偡丅
% 摨條偵丄偦偺僞乕僎僢僩偺師尦偼丄SPMAK(KNOTS,COEFS) 偺弌椡偵懳偟偰偺
% 師尦傛傝傕彫偝偔側傝傑偡丅
%
% 摿偵丄擖椡偺學悢偼丄偄偔傜偐偺 d>0 偵懳偟偰(d+1)梫慺偺儀僋僩儖抣偱
% 側偗傟偽側傜偢丄N師尦偺抣傪傕偭偨傕偺偵偼側傝傑偣傫丅
%
% 椺偊偽丄spmak([-5 -5 -5 5 5 5],[26 -24 26]) 偼丄嬫娫 [-5 .. 5] 偱
% 懡崁幃 t |-> t^2+1 偺B-宆傪梌偊傞堦曽丄spmak([-5 -5 -5 5 5 5], [1 1 1]) 
% 偼丄掕悢娭悢1偺B-宆傪梌偊傑偡丅傑偨丄僐儅儞僪
%
%      runge = rsmak([-5 -5 -5 5 5 5],[1 1 1; 26 -24 26]);
%
% 偼丄摍娫妘偺僒僀僩偱偺懡崁幃曗娫偵娭偡傞Runge偺椺戣偱桳柤側桳棟娭悢
% t |-> 1/(t^2+1) 偵懳偡傞嬫娫 [-5 .. 5] 偱偺rB-宆傪梌偊傑偡丅
%
% RSMAK(KNOTS,COEFS,SIZEC) 偼丄COEFS 偑屻偵懕偔梫慺悢1偺師尦傪傕偮偲偒偵
% 巊梡偝傟傑偡丅偙偺応崌丄SIZEC 偑 COEFS 偺堄恾偝傟傞戝偒偝傪梌偊傞儀僋
% 僩儖偱側偗傟偽側傝傑偣傫丅摿偵 SIZEC(1) 偼丄幚嵺偺 COEFS 偺嵟弶偺師尦偱
% 側偗傟偽側傝傑偣傫丅廬偭偰丄SIZEC(1)-1 偼丄僞乕僎僢僩偺師尦偱偡丅
%   
% rB-宆偼丄c(:,i) 偑 NURBS 偺懳墳偡傞惂屼揰偱偁傝丄傑偨丄w(i) 偑偦偺懳墳
% 偡傞廳傒偱偁傞偲偒偵丄rB-宆偺昗弨揑側學悢偑 [w(i)*c(:,i);w(i)] 偺宍傪
% 傕偮偲偄偆堄枴偵偍偄偰丄NURBS 偺僶乕僕儑儞偲摨偠偱偡丅
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% RSMAK(OBJECT,varargin) 偼丄暥帤楍 OBJECT 偱巜掕偝傟偨摿掕偺婔壗妛揑側
% 宍忬傪弌椡偟傑偡丅椺偊偽丄
%
% rsmak('circle',radius,center) 偼丄梌偊傜傟偨敿宎(僨僼僅儖僩1)偲拞怱
% (僨僼僅儖僩 (0,0))傪傕偮墌傪婰弎偡傞2師偺桳棟僗僾儔僀儞傪梌偊傑偡丅
%
% rsmak('cone',radius,height) 偼丄愭抂偑 (0,0,0) 偱z-嵗昗忋偵拞幉傪傕偮
% 梌偊傜傟偨敿宎(僨僼僅儖僩1)偲敿暘偺崅偝(僨僼僅儖僩1)偺懳徧側墌悕傪
% 婰弎偡傞2師偺桳棟僗僾儔僀儞傪梌偊傑偡丅
%
% rsmak('cylinder',radius,height) 偼丄z-嵗昗忋偵拞幉傪傕偮梌偊傜傟偨敿宎
% (僨僼僅儖僩1)偲崅偝(僨僼僅儖僩1)偺墌拰傪婰弎偡傞2師偺桳棟僗僾儔僀儞傪
% 梌偊傑偡丅
%
% rsmak('southcap',radius,center) 偼丄梌偊傜傟偨敿宎(僨僼僅儖僩1)偲拞怱
% (僨僼僅儖僩 (0,0,0))傪傕偮媴偺撿懁偺6暘偺1傪梌偊傑偡丅
%
% transf 偵傛偭偰巜掕偝傟偨傾僼傿儞(affine)曄姺偺寢壥偲偟偰惗偠偨婔壗妛揑
% 側僆僽僕僃僋僩傪庢傝弌偡偵偼丄fncmb(rs,transf) 傪巊梡偟偰偔偩偝偄丅
% 椺偊偽丄埲壓偼 'southcap' 帺恎偲丄偦偺夞揮偺偆偪偺2偮偍傛傃偦偺嬀塮偵
% 傛偭偰梌偊傜傟傞傛偆側媴偺2/3偺僾儘僢僩傪惗惉偟傑偡丅
%
%      southcap = rsmak('southcap');
%      xpcap = fncmb(southcap,[0 0 -1;0 1 0;1 0 0]);
%      ypcap = fncmb(xpcap,[0 -1 0; 1 0 0; 0 0 1]);
%      northcap = fncmb(southcap,-1);
%      fnplt(southcap), hold on, fnplt(xpcap), fnplt(ypcap), fnplt(northcap)
%      axis equal, shading interp, view(-115,10), axis off, hold off
%
% 嶲峫 RSBRK, RPMAK, PPMAK, SPMAK, FNBRK.


%   Copyright 1999-2004 C. de Boor and The MathWorks, Inc.