/* === S Y N F I G ========================================================= */
/*! \file metaballs.cpp
-** \brief Implements metaballs
+** \brief Implementation of the "Metaballs" layer
**
** $Id$
**
SYNFIG_LAYER_INIT(Metaballs);
SYNFIG_LAYER_SET_NAME(Metaballs,"metaballs");
SYNFIG_LAYER_SET_LOCAL_NAME(Metaballs,N_("Metaballs"));
-SYNFIG_LAYER_SET_CATEGORY(Metaballs,N_("Default"));
+SYNFIG_LAYER_SET_CATEGORY(Metaballs,N_("Example"));
SYNFIG_LAYER_SET_VERSION(Metaballs,"0.1");
SYNFIG_LAYER_SET_CVS_ID(Metaballs,"$Id$");
Layer_Composite(1.0,Color::BLEND_STRAIGHT),
color(Color::black())
{
+ centers.push_back(Point( 0, -1.5)); radii.push_back(2.5); weights.push_back(1);
+ centers.push_back(Point(-2, 1)); radii.push_back(2.5); weights.push_back(1);
+ centers.push_back(Point( 2, 1)); radii.push_back(2.5); weights.push_back(1);
}
bool
//sum up weighted functions
for(unsigned int i=0;i<centers.size();i++)
- {
density += weights[i] * densityfunc(pos,centers[i], radii[i]);
- }
return density;
}
Color
Metaballs::get_color(Context context, const Point &pos)const
{
- Real dens = totaldensity(pos);
-
- if(dens >= threshold)
- return color;
+ if (totaldensity(pos) >= threshold)
+ return Color::blend(color,context.get_color(pos),get_amount(),get_blend_method());
else
return context.get_color(pos);
}
Metaballs::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
{
// Width and Height of a pixel
- const Point br(renddesc.get_br()),
- tl(renddesc.get_tl());
-
- const int w = renddesc.get_w(),
- h = renddesc.get_h();
-
- Real pw = renddesc.get_pw();
- Real ph = renddesc.get_ph();
+ const Point br(renddesc.get_br()), tl(renddesc.get_tl());
+ const int w(renddesc.get_w()), h(renddesc.get_h());
+ const Real pw(renddesc.get_pw()), ph(renddesc.get_ph());
SuperCallback supercb(cb,0,9000,10000);
- if(!context.accelerated_render(surface,quality,renddesc,&supercb))
- {
- if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
- return false;
- }
-
Point pos(tl[0],tl[1]);
- Real dens;
-
if(!context.accelerated_render(surface,quality,renddesc,&supercb))
{
if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
{
pos[0] = tl[0];
for(int x = 0; x < w; x++, pos[0] += pw)
- {
- dens = totaldensity(pos);
-
- if(dens >= threshold)
- {
+ if (totaldensity(pos) >= threshold)
(*surface)[y][x] = Color::blend(color,(*surface)[y][x],get_amount(),get_blend_method());
- }
- }
}
// Mark our progress as finished