X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Fsrc%2Fmodules%2Flyr_std%2Fstretch.cpp;fp=synfig-core%2Fsrc%2Fmodules%2Flyr_std%2Fstretch.cpp;h=de0de940c6ffdec4a4877a3338cf8dd4c47eb81b;hb=a095981e18cc37a8ecc7cd237cc22b9c10329264;hp=0000000000000000000000000000000000000000;hpb=9459638ad6797b8139f1e9f0715c96076dbf0890;p=synfig.git

diff --git a/synfig-core/src/modules/lyr_std/stretch.cpp b/synfig-core/src/modules/lyr_std/stretch.cpp
new file mode 100644
index 0000000..de0de94
--- /dev/null
+++ b/synfig-core/src/modules/lyr_std/stretch.cpp
@@ -0,0 +1,192 @@
+/* === 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 &param)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]));
+}