/** ** pixelc.c ---- pixel read from context ** ** Copyright (c) 1995 Csaba Biegl, 820 Stirrup Dr, Nashville, TN 37221 ** [e-mail: csaba@vuse.vanderbilt.edu]. ** ** This file is part of the GRX graphics library. ** ** The GRX graphics library is free software; you can redistribute it ** and/or modify it under some conditions; see the "copying.grx" file ** for details. ** ** This library 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. ** **/ #include "libgrx.h" #include "clipping.h" GrColor GrPixelC(GrContext *c,int x,int y) { GrColor retval; cxclip_dot_(c,x,y,return(GrNOCOLOR)); mouse_block(c,x,y,x,y); retval = (*c->gc_driver->readpixel)( &c->gc_frame, x + c->gc_xoffset, y + c->gc_yoffset ); mouse_unblock(); return(retval); }