void draw_smooth(float x1, float y1, float x2, float y2, float x3, float y3) {
VFrame::draw_smooth(int(x1+.5f),int(y1+.5f),
int(x2+.5f),int(y2+.5f), int(x3+.5f),int(y3+.5f));
}
void draw_smooth(float x1, float y1, float x2, float y2, float x3, float y3) {
VFrame::draw_smooth(int(x1+.5f),int(y1+.5f),
int(x2+.5f),int(y2+.5f), int(x3+.5f),int(y3+.5f));
}