/*
==============
Z_DrawGrid
==============
*/
void Z_DrawGrid( void ){
float zz, zb, ze;
float w, h;
char text[32];
w = ( z.width / 2 / z.scale );
h = ( z.height / 2 / z.scale );
zb = z.origin[2] - h;
if ( zb < region_mins[2] ) {
zb = region_mins[2];
}
zb = 64 * floor( zb / 64 );
ze = z.origin[2] + h;
if ( ze > region_maxs[2] ) {
ze = region_maxs[2];
}
ze = 64 * ceil( ze / 64 );
// draw major blocks
glColor3fv( g_qeglobals.d_savedinfo.colors[COLOR_GRIDMAJOR] );
if ( g_qeglobals.d_showgrid ) {
if ( g_qeglobals.d_gridsize < 128 ) {
glBegin( GL_LINES );
glVertex2f( 0, zb );
glVertex2f( 0, ze );
for ( zz = zb ; zz < ze ; zz += 64 )
{
glVertex2f( -w, zz );
glVertex2f( w, zz );
}
glEnd();
}
else
{
glBegin( GL_LINES );
glVertex2f( 0, zb );
glVertex2f( 0, ze );
for ( zz = zb ; zz < ze ; zz += 64 )
{
// d_gridsize >= 128 .. it's an int for sure
if ( ( (int)zz & ( (int)g_qeglobals.d_gridsize - 1 ) ) != 0 ) {
continue;
}
glVertex2f( -w, zz );
glVertex2f( w, zz );
}
glEnd();
}
}
// draw minor blocks
if ( g_qeglobals.d_showgrid && g_qeglobals.d_gridsize * z.scale >= 4 &&
g_qeglobals.d_savedinfo.colors[COLOR_GRIDMINOR] != g_qeglobals.d_savedinfo.colors[COLOR_GRIDBACK] ) {
glColor3fv( g_qeglobals.d_savedinfo.colors[COLOR_GRIDMINOR] );
glBegin( GL_LINES );
for ( zz = zb ; zz < ze ; zz += g_qeglobals.d_gridsize )
{
if ( !( (int)zz & 63 ) ) {
continue;
}
glVertex2f( -w, zz );
glVertex2f( w, zz );
}
glEnd();
}
// draw coordinate text if needed
if ( g_qeglobals.d_savedinfo.show_coordinates ) {
glColor3fv( g_qeglobals.d_savedinfo.colors[COLOR_GRIDTEXT] );
int step = (int)( g_qeglobals.d_gridsize > 64 ? g_qeglobals.d_gridsize : 64 );
zb = z.origin[2] - h;
if ( zb < region_mins[2] ) {
zb = region_mins[2];
}
zb = step * floor( zb / step );
for ( zz = zb ; zz < ze ; zz += step )
{
glRasterPos2f( -w + ( 1 / z.scale ), zz );
sprintf( text, "%i",(int)zz );
gtk_glwidget_print_string( text );
}
}
}
void gtk_glwidget_print_char( char s ){
char str[2];
str[0] = s;
str[1] = '\0';
gtk_glwidget_print_string( str );
}
