haskal
/
kicad
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Testing a new fast draw algo to draw grid.

This commit is contained in:
charras 2010-01-13 20:03:33 +00:00
parent 6efce74c96
commit 4936ca3a7f
1 changed files with 32 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
common/drawpanel.cpp
View File

@ -757,14 +757,18 @@ void WinEDA_DrawPanel::DrawBackGround( wxDC* DC )
if( drawgrid )
{
m_Parent->PutOnGrid( &org );
GRSetColorPen( DC, color );
int xpos, ypos;
#if 0 // Use a pixel based draw to display grid
// There is a lot of calls, so the cost is hight
// and grid is slowly drawn on some platforms
for( ii = 0; ; ii++ )
{
xg = wxRound(ii * screen_grid_size.x);
if( xg > size.x )
break;
int xpos = org.x + xg;
xpos = org.x + xg;
xpos = GRMapX( xpos );
for( jj = 0; ; jj++ )
{
@ -775,7 +779,32 @@ void WinEDA_DrawPanel::DrawBackGround( wxDC* DC )
DC->DrawPoint( xpos, GRMapY( ypos ) );
}
}
}
#else // Currently on test: Use a fast way to draw the grid
// a grid column is drawn; and then copied to others grid columns
// this is possible because the grid is drawn only after clearing the screen.
ii = 1;
xg = wxRound(ii * screen_grid_size.x);
int x0pos = GRMapX( org.x + xg);
for( jj = 0; ; jj++ )
{
yg = wxRound(jj * screen_grid_size.y);
if( yg > size.y )
break;
ypos = org.y + yg;
DC->DrawPoint( x0pos, GRMapY( ypos ) );
}
ypos = GRMapY(org.y);
for( ii = 2; ; ii++ )
{
xg = wxRound(ii * screen_grid_size.x);
if( xg > size.x )
break;
xpos = GRMapX( org.x + xg );
DC->Blit( xpos, ypos, 1, size.y, DC, x0pos, ypos );
}
#endif
}
/* Draw axis */