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/* Copyright (c) 1986 Regents of the University of California */ |
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|
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#ifndef lint |
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< |
static char SCCSid[] = "$SunId$ LBL"; |
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> |
static const char RCSid[] = "$Id$"; |
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#endif |
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– |
|
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/* |
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* xf.c - routines to convert transform arguments into 4X4 matrix. |
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* |
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< |
* 1/28/86 |
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> |
* External symbols declared in standard.h |
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*/ |
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|
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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|
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< |
#define PI 3.14159265358979323846 |
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> |
#include "standard.h" |
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> |
|
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#define d2r(a) ((PI/180.)*(a)) |
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|
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< |
#define checkarg(a,n) if (av[i][a] || i+n >= ac) goto done |
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> |
#define checkarg(a,l) if (av[i][a] || badarg(ac-i-1,av+i+1,l)) goto done |
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|
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|
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int |
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< |
xf(retmat, retsca, ac, av) /* get transform specification */ |
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< |
double retmat[4][4]; |
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< |
double *retsca; |
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> |
xf(ret, ac, av) /* get transform specification */ |
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> |
register XF *ret; |
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int ac; |
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char *av[]; |
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{ |
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< |
double atof(), sin(), cos(); |
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< |
double xfmat[4][4], m4[4][4]; |
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< |
double xfsca, theta; |
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> |
MAT4 xfmat, m4; |
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> |
double xfsca, dtmp; |
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int i, icnt; |
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|
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< |
setident4(retmat); |
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< |
*retsca = 1.0; |
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> |
setident4(ret->xfm); |
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> |
ret->sca = 1.0; |
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|
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+ |
icnt = 1; |
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setident4(xfmat); |
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xfsca = 1.0; |
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|
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switch (av[i][1]) { |
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|
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case 't': /* translate */ |
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< |
checkarg(2,3); |
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> |
checkarg(2,"fff"); |
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m4[3][0] = atof(av[++i]); |
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m4[3][1] = atof(av[++i]); |
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m4[3][2] = atof(av[++i]); |
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case 'r': /* rotate */ |
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switch (av[i][2]) { |
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case 'x': |
| 107 |
< |
checkarg(3,1); |
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< |
theta = d2r(atof(av[++i])); |
| 109 |
< |
m4[1][1] = m4[2][2] = cos(theta); |
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< |
m4[2][1] = -(m4[1][2] = sin(theta)); |
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> |
checkarg(3,"f"); |
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> |
dtmp = d2r(atof(av[++i])); |
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> |
m4[1][1] = m4[2][2] = cos(dtmp); |
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> |
m4[2][1] = -(m4[1][2] = sin(dtmp)); |
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|
break; |
| 112 |
|
case 'y': |
| 113 |
< |
checkarg(3,1); |
| 114 |
< |
theta = d2r(atof(av[++i])); |
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< |
m4[0][0] = m4[2][2] = cos(theta); |
| 116 |
< |
m4[0][2] = -(m4[2][0] = sin(theta)); |
| 113 |
> |
checkarg(3,"f"); |
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> |
dtmp = d2r(atof(av[++i])); |
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> |
m4[0][0] = m4[2][2] = cos(dtmp); |
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> |
m4[0][2] = -(m4[2][0] = sin(dtmp)); |
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break; |
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|
case 'z': |
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< |
checkarg(3,1); |
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< |
theta = d2r(atof(av[++i])); |
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< |
m4[0][0] = m4[1][1] = cos(theta); |
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< |
m4[1][0] = -(m4[0][1] = sin(theta)); |
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> |
checkarg(3,"f"); |
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> |
dtmp = d2r(atof(av[++i])); |
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> |
m4[0][0] = m4[1][1] = cos(dtmp); |
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> |
m4[1][0] = -(m4[0][1] = sin(dtmp)); |
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break; |
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default: |
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< |
return(i); |
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> |
goto done; |
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} |
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break; |
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|
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case 's': /* scale */ |
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< |
checkarg(2,1); |
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> |
checkarg(2,"f"); |
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> |
dtmp = atof(av[i+1]); |
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> |
if (dtmp == 0.0) goto done; |
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> |
i++; |
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xfsca *= |
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m4[0][0] = |
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m4[1][1] = |
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< |
m4[2][2] = atof(av[++i]); |
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> |
m4[2][2] = dtmp; |
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break; |
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|
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case 'm': /* mirror */ |
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switch (av[i][2]) { |
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case 'x': |
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< |
checkarg(3,0); |
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> |
checkarg(3,""); |
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xfsca *= |
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m4[0][0] = -1.0; |
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break; |
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case 'y': |
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< |
checkarg(3,0); |
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> |
checkarg(3,""); |
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xfsca *= |
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m4[1][1] = -1.0; |
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break; |
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case 'z': |
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< |
checkarg(3,0); |
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> |
checkarg(3,""); |
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xfsca *= |
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m4[2][2] = -1.0; |
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break; |
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default: |
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< |
return(i); |
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> |
goto done; |
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} |
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break; |
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|
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case 'i': /* iterate */ |
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< |
checkarg(2,1); |
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< |
icnt = atoi(av[++i]); |
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> |
checkarg(2,"i"); |
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while (icnt-- > 0) { |
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< |
multmat4(retmat, retmat, xfmat); |
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< |
*retsca *= xfsca; |
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> |
multmat4(ret->xfm, ret->xfm, xfmat); |
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> |
ret->sca *= xfsca; |
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} |
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+ |
icnt = atoi(av[++i]); |
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setident4(xfmat); |
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xfsca = 1.0; |
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< |
break; |
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> |
continue; |
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|
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|
default: |
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< |
return(i); |
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> |
goto done; |
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|
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|
} |
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multmat4(xfmat, xfmat, m4); |
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} |
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done: |
| 180 |
< |
multmat4(retmat, retmat, xfmat); |
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< |
*retsca *= xfsca; |
| 180 |
> |
while (icnt-- > 0) { |
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> |
multmat4(ret->xfm, ret->xfm, xfmat); |
| 182 |
> |
ret->sca *= xfsca; |
| 183 |
> |
} |
| 184 |
|
return(i); |
| 185 |
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} |
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|
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|
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– |
#ifdef INVXF |
| 188 |
|
int |
| 189 |
< |
invxf(retmat, retsca, ac, av) /* invert transform specification */ |
| 190 |
< |
double retmat[4][4]; |
| 134 |
< |
double *retsca; |
| 189 |
> |
invxf(ret, ac, av) /* invert transform specification */ |
| 190 |
> |
register XF *ret; |
| 191 |
|
int ac; |
| 192 |
|
char *av[]; |
| 193 |
|
{ |
| 194 |
< |
double atof(), sin(), cos(); |
| 195 |
< |
double xfmat[4][4], m4[4][4]; |
| 140 |
< |
double xfsca, theta; |
| 194 |
> |
MAT4 xfmat, m4; |
| 195 |
> |
double xfsca, dtmp; |
| 196 |
|
int i, icnt; |
| 197 |
|
|
| 198 |
< |
setident4(retmat); |
| 199 |
< |
*retsca = 1.0; |
| 198 |
> |
setident4(ret->xfm); |
| 199 |
> |
ret->sca = 1.0; |
| 200 |
|
|
| 201 |
+ |
icnt = 1; |
| 202 |
|
setident4(xfmat); |
| 203 |
|
xfsca = 1.0; |
| 204 |
|
|
| 209 |
|
switch (av[i][1]) { |
| 210 |
|
|
| 211 |
|
case 't': /* translate */ |
| 212 |
< |
checkarg(2,3); |
| 212 |
> |
checkarg(2,"fff"); |
| 213 |
|
m4[3][0] = -atof(av[++i]); |
| 214 |
|
m4[3][1] = -atof(av[++i]); |
| 215 |
|
m4[3][2] = -atof(av[++i]); |
| 218 |
|
case 'r': /* rotate */ |
| 219 |
|
switch (av[i][2]) { |
| 220 |
|
case 'x': |
| 221 |
< |
checkarg(3,1); |
| 222 |
< |
theta = -d2r(atof(av[++i])); |
| 223 |
< |
m4[1][1] = m4[2][2] = cos(theta); |
| 224 |
< |
m4[2][1] = -(m4[1][2] = sin(theta)); |
| 221 |
> |
checkarg(3,"f"); |
| 222 |
> |
dtmp = -d2r(atof(av[++i])); |
| 223 |
> |
m4[1][1] = m4[2][2] = cos(dtmp); |
| 224 |
> |
m4[2][1] = -(m4[1][2] = sin(dtmp)); |
| 225 |
|
break; |
| 226 |
|
case 'y': |
| 227 |
< |
checkarg(3,1); |
| 228 |
< |
theta = -d2r(atof(av[++i])); |
| 229 |
< |
m4[0][0] = m4[2][2] = cos(theta); |
| 230 |
< |
m4[0][2] = -(m4[2][0] = sin(theta)); |
| 227 |
> |
checkarg(3,"f"); |
| 228 |
> |
dtmp = -d2r(atof(av[++i])); |
| 229 |
> |
m4[0][0] = m4[2][2] = cos(dtmp); |
| 230 |
> |
m4[0][2] = -(m4[2][0] = sin(dtmp)); |
| 231 |
|
break; |
| 232 |
|
case 'z': |
| 233 |
< |
checkarg(3,1); |
| 234 |
< |
theta = -d2r(atof(av[++i])); |
| 235 |
< |
m4[0][0] = m4[1][1] = cos(theta); |
| 236 |
< |
m4[1][0] = -(m4[0][1] = sin(theta)); |
| 233 |
> |
checkarg(3,"f"); |
| 234 |
> |
dtmp = -d2r(atof(av[++i])); |
| 235 |
> |
m4[0][0] = m4[1][1] = cos(dtmp); |
| 236 |
> |
m4[1][0] = -(m4[0][1] = sin(dtmp)); |
| 237 |
|
break; |
| 238 |
|
default: |
| 239 |
< |
return(i); |
| 239 |
> |
goto done; |
| 240 |
|
} |
| 241 |
|
break; |
| 242 |
|
|
| 243 |
|
case 's': /* scale */ |
| 244 |
< |
checkarg(2,1); |
| 244 |
> |
checkarg(2,"f"); |
| 245 |
> |
dtmp = atof(av[i+1]); |
| 246 |
> |
if (dtmp == 0.0) goto done; |
| 247 |
> |
i++; |
| 248 |
|
xfsca *= |
| 249 |
|
m4[0][0] = |
| 250 |
|
m4[1][1] = |
| 251 |
< |
m4[2][2] = 1.0 / atof(av[++i]); |
| 251 |
> |
m4[2][2] = 1.0 / dtmp; |
| 252 |
|
break; |
| 253 |
|
|
| 254 |
|
case 'm': /* mirror */ |
| 255 |
|
switch (av[i][2]) { |
| 256 |
|
case 'x': |
| 257 |
< |
checkarg(3,0); |
| 257 |
> |
checkarg(3,""); |
| 258 |
|
xfsca *= |
| 259 |
|
m4[0][0] = -1.0; |
| 260 |
|
break; |
| 261 |
|
case 'y': |
| 262 |
< |
checkarg(3,0); |
| 262 |
> |
checkarg(3,""); |
| 263 |
|
xfsca *= |
| 264 |
|
m4[1][1] = -1.0; |
| 265 |
|
break; |
| 266 |
|
case 'z': |
| 267 |
< |
checkarg(3,0); |
| 267 |
> |
checkarg(3,""); |
| 268 |
|
xfsca *= |
| 269 |
|
m4[2][2] = -1.0; |
| 270 |
|
break; |
| 271 |
|
default: |
| 272 |
< |
return(i); |
| 272 |
> |
goto done; |
| 273 |
|
} |
| 274 |
|
break; |
| 275 |
|
|
| 276 |
|
case 'i': /* iterate */ |
| 277 |
< |
checkarg(2,1); |
| 219 |
< |
icnt = atoi(av[++i]); |
| 277 |
> |
checkarg(2,"i"); |
| 278 |
|
while (icnt-- > 0) { |
| 279 |
< |
multmat4(retmat, xfmat, retmat); |
| 280 |
< |
*retsca *= xfsca; |
| 279 |
> |
multmat4(ret->xfm, xfmat, ret->xfm); |
| 280 |
> |
ret->sca *= xfsca; |
| 281 |
|
} |
| 282 |
+ |
icnt = atoi(av[++i]); |
| 283 |
|
setident4(xfmat); |
| 284 |
|
xfsca = 1.0; |
| 285 |
|
break; |
| 286 |
|
|
| 287 |
|
default: |
| 288 |
< |
return(i); |
| 288 |
> |
goto done; |
| 289 |
|
|
| 290 |
|
} |
| 291 |
|
multmat4(xfmat, m4, xfmat); /* left multiply */ |
| 292 |
|
} |
| 293 |
|
done: |
| 294 |
< |
multmat4(retmat, xfmat, retmat); |
| 295 |
< |
*retsca *= xfsca; |
| 294 |
> |
while (icnt-- > 0) { |
| 295 |
> |
multmat4(ret->xfm, xfmat, ret->xfm); |
| 296 |
> |
ret->sca *= xfsca; |
| 297 |
> |
} |
| 298 |
|
return(i); |
| 299 |
|
} |
| 300 |
< |
#endif |
| 300 |
> |
|
| 301 |
> |
|
| 302 |
> |
int |
| 303 |
> |
fullxf(fx, ac, av) /* compute both forward and inverse */ |
| 304 |
> |
FULLXF *fx; |
| 305 |
> |
int ac; |
| 306 |
> |
char *av[]; |
| 307 |
> |
{ |
| 308 |
> |
xf(&fx->f, ac, av); |
| 309 |
> |
return(invxf(&fx->b, ac, av)); |
| 310 |
> |
} |