#include <stdio.h>
#include "window.h"


Matrix projection_stack[MAX_PROJECTION_STACK_SIZE];
int projection_stack_level=0;

/***************************************************************************
                   P U S H P R O J E C T I O N S T A C K 
***************************************************************************/
void pushProjectionStack(void)  /*!*/
{
long oldmode;

oldmode=getmmode();

/*printf ("oldmode: %ld\n",oldmode);*/

mmode(MPROJECTION);
/*printf ("stack level %d\n",projection_stack_level);*/
getmatrix(projection_stack[projection_stack_level]);
projection_stack_level++;
mmode(oldmode);

}

/***************************************************************************
                    P O P P R O J E C T I O N S T A C K 
***************************************************************************/
void popProjectionStack(void)  /*!*/
{
long oldmode;

oldmode=getmmode();

/*printf ("oldmode: %ld\n",oldmode);*/

mmode(MPROJECTION);
projection_stack_level--;
/*printf ("stack level %d\n",projection_stack_level);*/
loadmatrix(projection_stack[projection_stack_level]);
mmode(oldmode);
}

/***************************************************************************
                         O P E N R G B W I N D O W 
***************************************************************************/
long openRGBWindow(short x, short y, short width, short height, char *name)  /*!*/
{
long winid;

prefposition(x,x+width,y,y+height);
winid=winopen(name);
drawmode(NORMALDRAW);
mmode(MVIEWING);
RGBmode();
gconfig();
ortho2(-0.5,width-0.5,-0.5,height-0.5);
clear();

return winid;
}

/***************************************************************************
                        O P E N R G B S W I N D O W 
***************************************************************************/
long openRGBSWindow(long parent, short x, short y, short width, short height)  /*!*/
{
long winid;

winid=swinopen(parent);
if (winid==-1)
	puts ("ERROR - opening window");
winposition(x,x+width,y,y+height);
drawmode(NORMALDRAW);
mmode(MVIEWING);
RGBmode();
gconfig();
ortho2(-0.5,width-0.5,-0.5,height-0.5);
clear();

return winid;
}