--- ray/src/common/rglsurf.c 2003/02/22 02:07:22 3.4 +++ ray/src/common/rglsurf.c 2003/05/25 06:09:44 3.8 @@ -1,66 +1,11 @@ #ifndef lint -static const char RCSid[] = "$Id: rglsurf.c,v 3.4 2003/02/22 02:07:22 greg Exp $"; +static const char RCSid[] = "$Id: rglsurf.c,v 3.8 2003/05/25 06:09:44 greg Exp $"; #endif /* * Convert Radiance -> OpenGL surfaces. */ -/* ==================================================================== - * The Radiance Software License, Version 1.0 - * - * Copyright (c) 1990 - 2002 The Regents of the University of California, - * through Lawrence Berkeley National Laboratory. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. The end-user documentation included with the redistribution, - * if any, must include the following acknowledgment: - * "This product includes Radiance software - * (http://radsite.lbl.gov/) - * developed by the Lawrence Berkeley National Laboratory - * (http://www.lbl.gov/)." - * Alternately, this acknowledgment may appear in the software itself, - * if and wherever such third-party acknowledgments normally appear. - * - * 4. The names "Radiance," "Lawrence Berkeley National Laboratory" - * and "The Regents of the University of California" must - * not be used to endorse or promote products derived from this - * software without prior written permission. For written - * permission, please contact radiance@radsite.lbl.gov. - * - * 5. Products derived from this software may not be called "Radiance", - * nor may "Radiance" appear in their name, without prior written - * permission of Lawrence Berkeley National Laboratory. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * ==================================================================== - * - * This software consists of voluntary contributions made by many - * individuals on behalf of Lawrence Berkeley National Laboratory. For more - * information on Lawrence Berkeley National Laboratory, please see - * . - */ +#include "copyright.h" #include "radogl.h" @@ -166,8 +111,8 @@ newtess() /* allocate GLU tessellation object */ { if ((gluto = gluNewTess()) == NULL) error(INTERNAL, "gluNewTess failed"); - gluTessCallback(gluto, GLU_TESS_BEGIN, (_GLUfuncptr)glBegin); - gluTessCallback(gluto, GLU_TESS_VERTEX, (_GLUfuncptr)glVertex3dv); + gluTessCallback(gluto, GLU_TESS_BEGIN, glBegin); + gluTessCallback(gluto, GLU_TESS_VERTEX, glVertex3dv); gluTessCallback(gluto, GLU_TESS_END, glEnd); gluTessCallback(gluto, GLU_TESS_COMBINE, myCombine); gluTessCallback(gluto, GLU_TESS_ERROR, glu_error); @@ -197,7 +142,7 @@ register OBJREC *o; objerror(o, USER, "bad # real arguments"); area = polyarea(cent, norm, o->oargs.nfargs/3, (FVECT *)o->oargs.farg); if (area <= FTINY) - return; + return(0); if (dolights) /* check for source */ doflatsrc((MATREC *)o->os, cent, norm, area); setmaterial((MATREC *)o->os, cent, 1); /* set material */ @@ -232,6 +177,7 @@ register OBJREC *o; (GLdouble)o->oargs.farg[3*i+1], (GLdouble)o->oargs.farg[3*i+2]); } + return(0); } @@ -262,7 +208,7 @@ register OBJREC *o; o->otype = o->otype==OBJ_SPHERE ? OBJ_BUBBLE : OBJ_SPHERE; o->oargs.farg[3] = -o->oargs.farg[3]; } else if (o->oargs.farg[3] <= FTINY) - return; + return(0); if (dolights) dosphsrc((MATREC *)o->os, o->oargs.farg, PI*o->oargs.farg[3]*o->oargs.farg[3]); @@ -278,6 +224,7 @@ register OBJREC *o; (GLdouble)o->oargs.farg[2]); gluSphere(gluqo, (GLdouble)o->oargs.farg[3], NSLICES, NSTACKS); glPopMatrix(); + return(0); } @@ -333,7 +280,11 @@ register OBJREC *o; x1 = o->oargs.farg[1] - o->oargs.farg[4]; y1 = o->oargs.farg[3] - o->oargs.farg[0]; /* z1 = 0; */ - d = 180./PI * asin(sqrt(x1*x1 + y1*y1) / h); + d = x1*x1 + y1*y1; + if (d <= FTINY*FTINY) + x1 = 1.; + else + d = 180./PI * asin(sqrt(d) / h); if (o->oargs.farg[5] < o->oargs.farg[2]) d = 180. - d; if (d > FTINY) @@ -341,6 +292,7 @@ register OBJREC *o; gluCylinder(gluqo, o->oargs.farg[6], o->oargs.farg[iscyl ? 6 : 7], h, NSLICES, 1); glPopMatrix(); + return(0); } @@ -348,7 +300,7 @@ int o_ring(o) /* convert a ring */ register OBJREC *o; { - double x1, y1, d; + double x1, y1, d, h; if (o->oargs.nfargs != 8) objerror(o, USER, "bad # real arguments"); @@ -377,17 +329,22 @@ register OBJREC *o; glTranslated((GLdouble)o->oargs.farg[0], (GLdouble)o->oargs.farg[1], (GLdouble)o->oargs.farg[2]); /* compute rotation angle */ - d = VLEN(o->oargs.farg+3); - if (d <= FTINY) + h = VLEN(o->oargs.farg+3); + if (h <= FTINY) return; x1 = -o->oargs.farg[4]; y1 = o->oargs.farg[3]; /* z1 = 0; */ - d = 180./PI * asin(sqrt(x1*x1 + y1*y1) / d); + d = x1*x1 + y1*y1; + if (d <= FTINY*FTINY) + x1 = 1.; + else + d = 180./PI * asin(sqrt(d) / h); if (o->oargs.farg[5] < 0.) d = 180. - d; if (d > FTINY) glRotated(d, (GLdouble)x1, (GLdouble)y1, 0.); gluDisk(gluqo, o->oargs.farg[6], o->oargs.farg[7], NSLICES, 1); glPopMatrix(); + return(0); }