From a9022b5972dc49d86f617a27940fafe9c4d0e7e7 Mon Sep 17 00:00:00 2001 From: Ian C Date: Thu, 9 Jun 2011 13:46:28 +0000 Subject: Initial import of (very old) vidoom sources. --- editsrot.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 editsrot.c (limited to 'editsrot.c') diff --git a/editsrot.c b/editsrot.c new file mode 100644 index 0000000..c4f1bea --- /dev/null +++ b/editsrot.c @@ -0,0 +1,76 @@ +/* + + viDOOM - level editor for DOOM + + Copyright (C) 2000 Ian Cowburn (ianc@noddybox.demon.co.uk) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + ------------------------------------------------------------------------- + + Editor scale and rotation routines + +*/ +static const char rcs_id[]="$Id$"; + +#include "config.h" +#include "globals.h" +#include "editvar.h" + +#include + + +/* ---------------------------------------- ROTATION ROUTINES +*/ +void Rotate(int cx,int cy,int *x,int *y, double ang) +{ + double r,t; + + VIDOOM_TRACE; + + ang=RAD(ang); + + *x-=cx; + *y-=cy; + + r=hypot((double)*x,(double)*y); + t=atan2((double)*y,(double)*x); + + *x=(int)(r*cos(t+ang)+0.5); + *y=(int)(r*sin(t+ang)+0.5); + + *x+=cx; + *y+=cy; +} + + +/* ---------------------------------------- SCALE ROUTINES +*/ +void Scale(int cx,int cy,int *x,int *y, double sc) +{ + VIDOOM_TRACE; + + *x-=cx; + *y-=cy; + + *x=(int)((*x)*sc); + *y=(int)((*y)*sc); + + *x+=cx; + *y+=cy; +} + + +/* END OF FILE */ -- cgit v1.2.3