00001 /* 00002 PROJETO USPDesigner 00003 MODULO: DIS (Hidden Line Elimination) 00004 Copyright (C) 1989 a 2008, Marcos Tsuzuki, All rights reserved 00005 Universidade de Sao Paulo, EPUSP-PMR 00006 00007 NOME DO ARQUIVO: disledge.cpp 00008 Coded by Marcos Tsuzuki 00009 00010 Redistribution and use in source and binary forms, with or without 00011 modification, are permitted provided that the following conditions 00012 are met: 00013 00014 1. Redistributions of source code must retain the above copyright 00015 notice, this list of conditions and the following disclaimer. 00016 00017 2. Redistributions in binary form must reproduce the above copyright 00018 notice, this list of conditions and the following disclaimer in the 00019 documentation and/or other materials provided with the distribution. 00020 00021 3. The names of its contributors may not be used to endorse or promote 00022 products derived from this software without specific prior written 00023 permission. 00024 00025 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00026 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00027 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00028 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 00029 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00030 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00031 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00032 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00033 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00034 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00035 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00036 00037 00038 Any feedback is very welcome. 00039 email: mtsuzuki at usp.br (remove space) 00040 */ 00041 #include <stdio.h> 00042 #ifndef __UNIX_ 00043 #ifndef _Windows 00044 #include <graphics.h> 00045 #else 00046 #include <windows.h> 00047 #endif 00048 #endif 00049 #include "memvirtu.h" 00050 #include "lowparam.h" 00051 #include "lowmacro.h" 00052 #include "lowsolid.h" 00053 #include "disdispl.h" 00054 #include "gphgraph.h" 00055 00056 void MSD_lowDisplayDividedEdge(CTYPE *cptr, EPTYPE eptr) 00057 { 00058 vect2 s1, s2; 00059 DEDGTYPE *spr, *epr; 00060 int i, dsp, evis; 00061 00062 evis = FALSE; 00063 spr = divedptr = divedge; 00064 dsp = divedptr->devis; 00065 for (++divedptr, i = 1; i < divednum; ++divedptr, ++i) 00066 { 00067 for ( ; i < divednum; ++divedptr, ++i) 00068 { 00069 if (dsp != divedptr->devis) 00070 { 00071 break; 00072 } 00073 } 00074 epr = (i < divednum) ? divedptr : divedptr - 1; 00075 MSD_lowExecDisplayTransformation(spr->devtx, epr->devtx, s1, s2); 00076 switch (dsp) 00077 { 00078 case FALSE: 00079 if (cptr->dash) 00080 { 00081 g_tline(DASHED_LINE, s1, s2); 00082 } 00083 break; 00084 00085 case TRUE: 00086 evis = TRUE; 00087 g_tline(SOLID_LINE, s1, s2); 00088 break; 00089 } 00090 spr = epr; 00091 dsp = divedptr->devis; 00092 } 00093 if ((eptr != ENIL) && !evis) 00094 { 00095 EdgEVis(eptr) = INVISIBLE; 00096 } 00097 }