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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3.2 Final//FR"><!-- Converted with LaTeX2HTML 95.1 (Fri Jan 20 1995) --><!-- by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --><!-- Modified Simulog 03/97 --><HTML><HEAD><TITLE>6.2 Interaction subroutines</TITLE><LINK REL=STYLESHEET TYPE="text/css" HREF="./Modulef.css" TITLE="Modulef CSS"><meta name="description" value="6.2 Interaction subroutines"><meta name="keywords" value="Guide6"><meta name="resource-type" value="document"><meta name="distribution" value="global"></HEAD><BODY BGCOLOR="#FFFFFF"><P> <IMG SRC="../icons/smallmod.gif" WIDTH=211 HEIGHT=50 ALIGN=BOTTOM ALT="Modulef"><A NAME=tex2html1526 HREF="node89.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/previous_motif.gif" ALT="previous"></A><A NAME=tex2html1532 HREF="node88.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/up_motif.gif" ALT="up"></A><A NAME=tex2html1534 HREF="node91.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/next_motif.gif" ALT="next"></A><A NAME=tex2html1536 HREF="node2.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/contents_motif.gif" ALT="contents"></A><A HREF="../Guide6-18/node90.html"><IMG BORDER=0 SRC="../icons/zoom18.gif" ALIGN=BOTTOM ALT="[BIG]"></A><A HREF="../Guide6-14/node90.html"><IMG BORDER=0 SRC="../icons/zoom14.gif" ALIGN=BOTTOM ALT="[Normal]"></A><A HREF="../Guide6-10/node90.html"><IMG BORDER=0 SRC="../icons/zoom10.gif" ALIGN=BOTTOM ALT="[small]"></A><BR><B> Next: </B> <A NAME=tex2html1535 HREF="node91.html">6.3 Entering a position in the </A><B>Up: </B> <A NAME=tex2html1533 HREF="node88.html">6 Input management</A><B> Prev: </B> <A NAME=tex2html1527 HREF="node89.html">6.1 Definition of the terminal and </A><B><A HREF="node2.html" >Contents</A></B><HR SIZE=3 WIDTH="75%"><H1><A NAME=SECTION05620000000000000000>6.2 Interaction subroutines</A></H1><P><P><P><UL><LI><P><PRE> SUBROUTINE GETXY(X, Y) REAL X, Y</PRE><P> returns<A NAME=3296> </A> <A NAME=3297> </A> the coordinates of the graphics cursor (visible on the visualization surface in the form of a crossor a small rectangle), expressed in the user space and defined by MASQUI and FENTRI,in (X, Y). The unit system, in which these coordinates are expressed, is defined by MASQUI.<P>If we decide to take the same dimensions for MASQUI and MASQU2 and is the visualized object is a two-dimensional object, then the coordinates returned in X and Y correspondexactly to the object's real coordinates.<P>If, for the same masks, the visualization object is three-dimensional, then the coordinates obtained are those obtained by MASQU2 defined by PRSPCT, and it is placed on the plane, Z = -1. In other words, the true coordinates obtained are (X, Y, -1.), expressed in the object's unit system, where:<P><DIV ALIGN=center><IMG BORDER=0 ALIGN=MIDDLE ALT="" SRC="img138.gif"></DIV><DIV ALIGN=center><IMG BORDER=0 ALIGN=MIDDLE ALT="" SRC="img139.gif"></DIV><P><LI><P><PRE> SUBROUTINE GETXYC(X, Y, IC) REAL X, Y CHARACTER*1 IC</PRE><P>This subroutine is identical to the <A NAME=3298> </A> preceding one, except for IC which contains the charactercorresponding to the key used for input. If the terminal is implemented well, we will have the followingrelationship:<P> <DIV ALIGN=center><IMG BORDER=0 ALIGN=MIDDLE ALT="" SRC="img140.gif"></DIV><P><LI><P><PRE> SUBROUTINE STROKE(NMAX, NB, X, Y) INTEGER NMAX, NB REAL X(NMAX), Y(NMAX)</PRE><P> returns in arrays<A NAME=3299> </A> X and Y a maximum of NMAX coordinates pairs defined in the user space.The actual number of points input is indicated in NB.<P>This function corresponds to the input of a curve, point by point (map recording or scheme recording).<P><LI><P><PRE> SUBROUTINE CSTROK(NMAX, NB, X, Y, DELMIN, DELMAX) INTEGER NMAX, NB REAL X(NMAX), Y(NMAX), DELMIN, DELMAX</PRE><P>returns in <A NAME=3300> </A> arrays X and Y a maximum of NMAX coordinate pairs defined in the user space.The actual number of points input is indicated in NB.<P> DELMIN and DELMAX indicate the minimum (elimination of noise) and maximum (elimination of coding errors) distances, respectively, between two consecutive points.<P>This function corresponds to the input of a curve by hand.<P> <LI><P><PRE> SUBROUTINE GETEXT(OUTEXT, X, Y, NBCMAX, INTEXT, NBCIN) CHARACTER*(*) OUTEXT, INTEXT INTEGER NBCMAX, NBCIN REAL X, Y</PRE><P>returns a string of NBCMAX characters <A NAME=3301> </A> maximum in array INTEXT. The actual number of characters input is indicated in NBCIN. An initial text contained in array OUTEXT is first displayed at position (X, Y) defined on the visualization surface. The initial textis cannot be edited. If, when called, NBCIN is non-zero, the NBCIN characters of INTEXT are displayed and those which can be edited.<P>On exit, (X, Y) is the position of the character which follows the last printed character.<P><LI><P><PRE> SUBROUTINE GETNUM(OUTEXT,X,Y,R,I,B,ITYP,ICONT,MINI,MAXI,MINR,MAXR) CHARACTER*(*)OUTEXT INTEGER I, ITYP, ICONT, MINI, MAXI REAL X, Y, R, MINR, MAXR LOGICAL B</PRE><P> returns on of the following values <A NAME=3302> </A> in ITYP: either an integer number in I (ITYP = 0), or a real value in R (ITYP = 1), or a logical entity in B (ITYP = 2).<P>Eventually, the text contained in the character string, OUTEXT, is displayed first at position (X, Y) on the visualization surface (variable name, comment,...)as well as the current value of the number.<P>Finally, is ICONT is non-zero, the number entered can be restrained to lie between two limits indicated by MINI and MAXI for an integer, and between MINR and MAXR for a real.<P><LI><P><PRE> SUBROUTINE GETHIT(HITSEG, HITNAM) INTEGER HITSEG, HITNAM</PRE><P>returns<A NAME=3304> </A> the name of a segment, using the designation device, in HITSEG. The name of the designated element is stored in HITNAM (see BGNA and ENDAS).<P></UL><P><P><P> <HR SIZE=3 WIDTH="75%"><IMG SRC="../icons/smallmod.gif" WIDTH=211 HEIGHT=50 ALIGN=BOTTOM ALT="Modulef"><A NAME=tex2html1526 HREF="node89.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/previous_motif.gif" ALT="previous"></A><A NAME=tex2html1532 HREF="node88.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/up_motif.gif" ALT="up"></A><A NAME=tex2html1534 HREF="node91.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/next_motif.gif" ALT="next"></A><A NAME=tex2html1536 HREF="node2.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/contents_motif.gif" ALT="contents"></A><A HREF="../Guide6-18/node90.html"><IMG BORDER=0 SRC="../icons/zoom18.gif" ALIGN=BOTTOM ALT="[BIG]"></A><A HREF="../Guide6-14/node90.html"><IMG BORDER=0 SRC="../icons/zoom14.gif" ALIGN=BOTTOM ALT="[Normal]"></A><A HREF="../Guide6-10/node90.html"><IMG BORDER=0 SRC="../icons/zoom10.gif" ALIGN=BOTTOM ALT="[small]"></A><BR><B> Next: </B> <A NAME=tex2html1535 HREF="node91.html">6.3 Entering a position in the </A><B>Up: </B> <A NAME=tex2html1533 HREF="node88.html">6 Input management</A><B> Prev: </B> <A NAME=tex2html1527 HREF="node89.html">6.1 Definition of the terminal and </A><B><A HREF="node2.html" >Contents</A></B><BR> <HR><P><ADDRESS></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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