--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file stretch.cpp
+** \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
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
+** \endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#define SYNFIG_NO_ANGLE
+
+#ifdef USING_PCH
+# include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "stretch.h"
+#include <synfig/string.h>
+#include <synfig/time.h>
+#include <synfig/context.h>
+#include <synfig/paramdesc.h>
+#include <synfig/renddesc.h>
+#include <synfig/surface.h>
+#include <synfig/value.h>
+#include <synfig/valuenode.h>
+#include <synfig/transform.h>
+
+#endif
+
+/* === U S I N G =========================================================== */
+
+using namespace etl;
+using namespace std;
+using namespace synfig;
+
+/* === G L O B A L S ======================================================= */
+
+SYNFIG_LAYER_INIT(Layer_Stretch);
+SYNFIG_LAYER_SET_NAME(Layer_Stretch,"stretch");
+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,"$Id$");
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+/* === E N T R Y P O I N T ================================================= */
+
+Layer_Stretch::Layer_Stretch():
+ amount(1,1),
+ center(0,0)
+{
+}
+
+
+bool
+Layer_Stretch::set_param(const String & param, const ValueBase &value)
+{
+ IMPORT(amount);
+ IMPORT(center);
+
+ return false;
+}
+
+ValueBase
+Layer_Stretch::get_param(const String ¶m)const
+{
+ EXPORT(amount);
+ EXPORT(center);
+
+ EXPORT_NAME();
+ EXPORT_VERSION();
+
+ return ValueBase();
+}
+
+Layer::Vocab
+Layer_Stretch::get_param_vocab()const
+{
+ Layer::Vocab ret;
+
+ ret.push_back(ParamDesc("amount")
+ .set_local_name(_("Amount"))
+ .set_origin("center")
+ );
+
+ ret.push_back(ParamDesc("center")
+ .set_local_name(_("Center"))
+ );
+
+ return ret;
+}
+
+synfig::Layer::Handle
+Layer_Stretch::hit_check(synfig::Context context, const synfig::Point &pos)const
+{
+ Point npos(pos);
+ npos[0]=(npos[0]-center[0])/amount[0]+center[0];
+ npos[1]=(npos[1]-center[1])/amount[1]+center[1];
+ return context.hit_check(npos);
+}
+
+Color
+Layer_Stretch::get_color(Context context, const Point &pos)const
+{
+ Point npos(pos);
+ npos[0]=(npos[0]-center[0])/amount[0]+center[0];
+ npos[1]=(npos[1]-center[1])/amount[1]+center[1];
+ return context.get_color(npos);
+}
+
+class Stretch_Trans : public Transform
+{
+ etl::handle<const Layer_Stretch> layer;
+public:
+ Stretch_Trans(const Layer_Stretch* x):Transform(x->get_guid()),layer(x) { }
+
+ 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]);
+ }
+
+ 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]);
+ }
+};
+etl::handle<Transform>
+Layer_Stretch::get_transform()const
+{
+ return new Stretch_Trans(this);
+}
+
+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
+ // for our zoom amount
+ Point npos;
+ npos[0]=(desc.get_tl()[0]-center[0])/amount[0]+center[0];
+ npos[1]=(desc.get_tl()[1]-center[1])/amount[1]+center[1];
+ desc.set_tl(npos);
+ npos[0]=(desc.get_br()[0]-center[0])/amount[0]+center[0];
+ npos[1]=(desc.get_br()[1]-center[1])/amount[1]+center[1];
+ desc.set_br(npos);
+
+ // 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]));
+}
projects / synfig.git / blobdiff