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+\documentclass{article}
+\usepackage{axiom}
+\begin{document}
+\title{\$SPAD/src/graph/viewman fun3D.c}
+\author{The Axiom Team}
+\maketitle
+\begin{abstract}
+\end{abstract}
+\eject
+\tableofcontents
+\eject
+\section{License}
+<<license>>=
+/*
+Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - 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.
+
+ - Neither the name of The Numerical ALgorithms Group Ltd. nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS 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 THE COPYRIGHT OWNER
+OR 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.
+*/
+@
+<<*>>=
+<<license>>
+
+#define _FUN3D_C
+#include "axiom-c-macros.h"
+#include "useproto.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "viewman.h"
+#include "mode.h"
+#include "actions.h"
+
+#include "util.H1"
+#include "sockio-c.H1"
+#include "fun3D.H1"
+#include "make3D.H1"
+#include "readView.H1"
+
+void
+#ifdef _NO_PROTO
+funView3D(viewCommand)
+ int viewCommand;
+#else
+funView3D(int viewCommand)
+#endif
+{
+
+ int code;
+ int viewPID;
+ float f1,f2,f3,f4;
+ int i1,i2;
+ viewManager *viewport;
+
+ viewPID = get_int(spadSock);
+
+ viewport = viewports;
+ while ((viewport) && (viewport->PID != viewPID))
+ viewport = viewport->nextViewport;
+
+ if (viewport) {
+ send_int(spadSock,1); /* acknowledge to spad */
+
+ viewmanEvent.xclient.window = viewport->viewWindow;
+
+ code = write(viewport->viewOut,&viewCommand,intSize);
+ switch (viewCommand) {
+ case rotate:
+ f1 = get_float(spadSock);
+ f2 = get_float(spadSock);
+ code = write(viewport->viewOut,&f1,floatSize);
+ code = write(viewport->viewOut,&f2,floatSize);
+ break;
+
+ case zoom:
+ f1 = get_float(spadSock);
+ code = write(viewport->viewOut,&f1,floatSize);
+ break;
+
+ case zoomx:
+ f1 = get_float(spadSock);
+ f2 = get_float(spadSock);
+ f3 = get_float(spadSock);
+ code = write(viewport->viewOut,&f1,floatSize);
+ code = write(viewport->viewOut,&f2,floatSize);
+ code = write(viewport->viewOut,&f3,floatSize);
+ break;
+
+ case translate:
+ f1 = get_float(spadSock);
+ f2 = get_float(spadSock);
+ code = write(viewport->viewOut,&f1,floatSize);
+ code = write(viewport->viewOut,&f2,floatSize);
+ break;
+
+ case modifyPOINT:
+ i1 = get_int(spadSock);
+ f1 = get_float(spadSock);
+ f2 = get_float(spadSock);
+ f3 = get_float(spadSock);
+ f4 = get_float(spadSock);
+ code = write(viewport->viewOut,&i1,intSize);
+ code = write(viewport->viewOut,&f1,floatSize);
+ code = write(viewport->viewOut,&f2,floatSize);
+ code = write(viewport->viewOut,&f3,floatSize);
+ code = write(viewport->viewOut,&f4,floatSize);
+ break;
+
+ case hideControl:
+ i1 = get_int(spadSock);
+ code = write(viewport->viewOut,&i1,intSize);
+ break;
+
+ case axesOnOff:
+ case perspectiveOnOff:
+ case region3D:
+ case clipRegionOnOff:
+ case clipSurfaceOnOff:
+ i1 = get_int(spadSock);
+ code = write(viewport->viewOut,&i1,intSize);
+ break;
+
+ case eyeDistanceData:
+ case hitherPlaneData:
+ f1 = get_float(spadSock);
+ code = write(viewport->viewOut,&f1,floatSize);
+ break;
+
+ case colorDef:
+ i1 = get_int(spadSock);
+ i2 = get_int(spadSock);
+ code = write(viewport->viewOut,&i1,intSize);
+ code = write(viewport->viewOut,&i2,intSize);
+ break;
+
+ case moveViewport:
+ i1 = get_int(spadSock);
+ i2 = get_int(spadSock);
+ code = write(viewport->viewOut,&i1,intSize);
+ code = write(viewport->viewOut,&i2,intSize);
+ break;
+
+ case resizeViewport:
+ i1 = get_int(spadSock);
+ i2 = get_int(spadSock);
+ code = write(viewport->viewOut,&i1,intSize);
+ code = write(viewport->viewOut,&i2,intSize);
+ break;
+
+ case transparent:
+ case opaqueMesh:
+ case render:
+ break;
+
+ case lightDef:
+ f1 = get_float(spadSock);
+ f2 = get_float(spadSock);
+ f3 = get_float(spadSock);
+ code = write(viewport->viewOut,&f1,floatSize);
+ code = write(viewport->viewOut,&f2,floatSize);
+ code = write(viewport->viewOut,&f3,floatSize);
+ break;
+
+ case translucenceDef:
+ f1 = get_float(spadSock);
+ code = write(viewport->viewOut,&f1,floatSize);
+ break;
+
+
+ case changeTitle:
+ s1 = get_string(spadSock);
+ i1 = strlen(s1);
+ code = write(viewport->viewOut,&i1,intSize);
+ code = write(viewport->viewOut,s1,i1);
+ break;
+
+ case writeView:
+ s1 = get_string(spadSock);
+ i1 = strlen(s1);
+ code = write(viewport->viewOut,&i1,intSize);
+ code = write(viewport->viewOut,s1,i1);
+ /* write out the types of things to be written */
+ i2 = get_int(spadSock);
+ code = write(viewport->viewOut,&i2,intSize);
+ while (i2) {
+ i2 = get_int(spadSock);
+ code = write(viewport->viewOut,&i2,intSize);
+ }
+ break;
+
+ case diagOnOff:
+ i1 = get_int(spadSock);
+ code = write(viewport->viewOut,&i1,intSize);
+ break;
+
+ case outlineOnOff:
+ i1 = get_int(spadSock);
+ code = write(viewport->viewOut,&i1,intSize);
+ break;
+
+ case spadPressedAButton:
+ i1 = get_int(spadSock);
+ code = write(viewport->viewOut,&i1,intSize);
+ break;
+ } /* switch */
+ /*** get acknowledge from viewport */
+
+ code = readViewport(viewport,&acknow,intSize);
+ send_int(spadSock,1); /* acknowledge to spad */
+ } else { /* if (viewport) */
+ send_int(spadSock,-1); /* send error value in acknowledge to spad */
+ }
+
+}
+void
+#ifdef _NO_PROTO
+forkView3D(typeOfViewport)
+ int typeOfViewport;
+#else
+forkView3D(int typeOfViewport)
+#endif
+{
+
+ viewManager *viewport;
+ int childPID, code;
+ int i;
+
+ view3DStruct doView3D;
+ int pipe0[2],pipe1[2];
+ int *anIndex;
+
+ char envAXIOM[100],runView[100];
+ int j,k;
+ LLPoint *anLLPoint;
+ LPoint *anLPoint;
+
+#ifdef DEBUG
+ fprintf(stderr,"Pipe calls for 3D\n");
+#endif
+ check(pipe(pipe0));
+ check(pipe(pipe1));
+
+#ifdef DEBUG
+ fprintf(stderr,"Fork routine for 3D\n");
+#endif
+ switch(childPID = check(fork())) {
+
+ case -1:
+ printf("Cannot create a new process - you probably have too many things running already.\n");
+ return;
+
+ case 0:
+ /*****************************
+ * child process *
+ *****************************/
+ /* map pipes from viewport manager to standard input and output */
+#ifdef DEBUG
+ fprintf(stderr,"Mapping pipes to standard I/O in 3D\n");
+#endif
+ check(dup2(pipe0[0],0));
+ check(dup2(pipe1[1],1));
+ close(pipe0[0]);
+ close(pipe0[1]);
+ close(pipe1[0]);
+ close(pipe1[1]);
+
+#ifdef DEBUG
+ fprintf(stderr,"Executing ThreeDimensionalViewport process\n");
+#endif
+ sprintf(envAXIOM,"%s",getenv("AXIOM"));
+ sprintf(runView,"%s%s",envAXIOM,"/lib/view3D");
+ check(execl(runView,runView,NULL));
+ fprintf(stderr,"The viewport manager could not execute view3D.\nCheck that view3D is on your PATH.\n");
+ exit(-1);
+
+ default:
+ /******************************
+ * parent process *
+ ******************************/
+ if (!(viewport = (viewManager *)malloc(sizeof(viewManager)))) {
+ printf("Ran out of memory trying to create a new viewport process.\n");
+ return;
+ }
+ viewport->viewType = typeOfViewport;
+ viewport->PID = childPID;
+
+ /* set up pipes to child process */
+ close(pipe0[0]);
+ close(pipe1[1]);
+ viewport->viewIn = pipe1[0];
+ viewport->viewOut = pipe0[1];
+
+ /* add new viewport to global list */
+ viewport->nextViewport = viewports;
+ viewports = viewport;
+
+ if (viewport->viewIn <0) {
+ fprintf(stderr,
+ "The viewport manager could not create connection to a 3D viewport window. Try again.\n");
+ return;
+ } else {
+
+ code = readViewport(viewport,&acknow,intSize);
+
+ if (code < 0) {
+ fprintf(stderr,
+ "The viewport manager could not read from a 3D viewport window\ncode=%d\nack=%d\n",code,acknow);
+ return;
+ }
+ }
+
+ makeView3DFromSpadData(&doView3D,typeOfViewport);
+
+ /* tell the child that parent is a viewport manager */
+ i = no;
+ write(viewport->viewOut,&i,sizeof(int));
+
+ write(viewport->viewOut,&doView3D,sizeof(view3DStruct));
+
+ i = strlen(doView3D.title)+1;
+ write(viewport->viewOut,&i,intSize); /* tell the length of the title to child */
+ write(viewport->viewOut,doView3D.title,i); /* tell the title to the child */
+ write(viewport->viewOut,&(doView3D.lightVec[0]),floatSize);
+ write(viewport->viewOut,&(doView3D.lightVec[1]),floatSize);
+ write(viewport->viewOut,&(doView3D.lightVec[2]),floatSize);
+
+ /* send generalized 3D components */
+ write(viewport->viewOut,&(doView3D.numOfPoints),intSize);
+ for (i=0; i<doView3D.numOfPoints; i++) {
+ write(viewport->viewOut,&(refPt(doView3D,i)->x),floatSize);
+ write(viewport->viewOut,&(refPt(doView3D,i)->y),floatSize);
+ write(viewport->viewOut,&(refPt(doView3D,i)->z),floatSize);
+ write(viewport->viewOut,&(refPt(doView3D,i)->c),floatSize);
+ }
+ write(viewport->viewOut,&(doView3D.lllp.numOfComponents),intSize);
+ anLLPoint = doView3D.lllp.llp;
+ for (i=0; i<doView3D.lllp.numOfComponents; i++,anLLPoint++) {
+ write(viewport->viewOut,&(anLLPoint->prop.closed),intSize);
+ write(viewport->viewOut,&(anLLPoint->prop.solid),intSize);
+ write(viewport->viewOut,&(anLLPoint->numOfLists),intSize);
+ anLPoint = anLLPoint->lp;
+ for (j=0; j<anLLPoint->numOfLists; j++,anLPoint++) {
+ write(viewport->viewOut,&(anLPoint->prop.closed),intSize);
+ write(viewport->viewOut,&(anLPoint->prop.solid),intSize);
+ write(viewport->viewOut,&(anLPoint->numOfPoints),intSize);
+ anIndex = anLPoint->indices;
+ for (k=0; k<anLPoint->numOfPoints; k++,anIndex++)
+ write(viewport->viewOut,anIndex,intSize);
+ } /* for LPoints in LLPoints (j) */
+ } /* for LLPoints in LLLPoints (i) */
+
+ /*** get acknowledge from viewport */
+ code = readViewport(viewport,&(viewport->viewWindow),sizeof(Window));
+ sleep(1); /* wait a second...*/
+ send_int(spadSock,viewport->PID); /* acknowledge to spad */
+
+ } /* switch */
+
+} /* forkView3D() */
+
+
+@
+\eject
+\begin{thebibliography}{99}
+\bibitem{1} nothing
+\end{thebibliography}
+\end{document}
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