/* === S Y N F I G ========================================================= */
/*! \file stretch.cpp
-** \brief Template Header
+** \brief Implementation of the "Stretch" layer
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007 Chris Moore
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
SYNFIG_LAYER_INIT(Layer_Stretch);
SYNFIG_LAYER_SET_NAME(Layer_Stretch,"stretch");
-SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Stretch,_("Stretch"));
-SYNFIG_LAYER_SET_CATEGORY(Layer_Stretch,_("Distortions"));
+SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Stretch,N_("Stretch"));
+SYNFIG_LAYER_SET_CATEGORY(Layer_Stretch,N_("Distortions"));
SYNFIG_LAYER_SET_VERSION(Layer_Stretch,"0.1");
SYNFIG_LAYER_SET_CVS_ID(Layer_Stretch,"$Id$");
ret.push_back(ParamDesc("amount")
.set_local_name(_("Amount"))
+ .set_origin("center")
);
ret.push_back(ParamDesc("center")
synfig::Vector perform(const synfig::Vector& x)const
{
- return Vector((x[0]-layer->center[0])*layer->amount[0]+layer->center[0],(x[1]-layer->center[1])*layer->amount[1]+layer->center[1]);
+ return Vector((x[0]-layer->center[0])*layer->amount[0]+layer->center[0],
+ (x[1]-layer->center[1])*layer->amount[1]+layer->center[1]);
}
synfig::Vector unperform(const synfig::Vector& x)const
{
- return Vector((x[0]-layer->center[0])/layer->amount[0]+layer->center[0],(x[1]-layer->center[1])/layer->amount[1]+layer->center[1]);
+ return Vector((x[0]-layer->center[0])/layer->amount[0]+layer->center[0],
+ (x[1]-layer->center[1])/layer->amount[1]+layer->center[1]);
}
};
etl::handle<Transform>
bool
Layer_Stretch::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
{
+ if (amount[0] == 0 || amount[1] == 0)
+ {
+ surface->set_wh(renddesc.get_w(), renddesc.get_h());
+ surface->clear();
+ return true;
+ }
+
RendDesc desc(renddesc);
desc.clear_flags();
// Adjust the top_left and bottom_right points
// Render the scene
return context.accelerated_render(surface,quality,desc,cb);
}
+
+Rect
+Layer_Stretch::get_full_bounding_rect(Context context)const
+{
+ Rect rect(context.get_full_bounding_rect());
+ Point min(rect.get_min()), max(rect.get_max());
+
+ return Rect(Point((min[0]-center[0])*amount[0]+center[0],
+ (min[1]-center[1])*amount[1]+center[1]),
+ Point((max[0]-center[0])*amount[0]+center[0],
+ (max[1]-center[1])*amount[1]+center[1]));
+}