--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file warp.cpp
+** \brief Implementation of the "Warp" layer
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007, 2008 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
+**
+** === N O T E S ===========================================================
+**
+** ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+# include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "warp.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>
+#include <ETL/misc>
+
+#endif
+
+/* === M A C R O S ========================================================= */
+
+/* === G L O B A L S ======================================================= */
+
+SYNFIG_LAYER_INIT(Warp);
+SYNFIG_LAYER_SET_NAME(Warp,"warp");
+SYNFIG_LAYER_SET_LOCAL_NAME(Warp,N_("Warp"));
+SYNFIG_LAYER_SET_CATEGORY(Warp,N_("Distortions"));
+SYNFIG_LAYER_SET_VERSION(Warp,"0.1");
+SYNFIG_LAYER_SET_CVS_ID(Warp,"$Id$");
+
+/* === 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 ================================================= */
+
+Warp::Warp():
+ src_tl (-2,2),
+ src_br (2,-2),
+ dest_tl (-1.8,2.1),
+ dest_tr (1.8,2.1),
+ dest_bl (-2.2,-2),
+ dest_br (2.2,-2),
+ clip (true)
+{
+ sync();
+ horizon=4;
+}
+
+Warp::~Warp()
+{
+}
+
+inline Point
+Warp::transform_forward(const Point& p)const
+{
+ return Point(
+ (inv_matrix[0][0]*p[0] + inv_matrix[0][1]*p[1] + inv_matrix[0][2])/(inv_matrix[2][0]*p[0] + inv_matrix[2][1]*p[1] + inv_matrix[2][2]),
+ (inv_matrix[1][0]*p[0] + inv_matrix[1][1]*p[1] + inv_matrix[1][2])/(inv_matrix[2][0]*p[0] + inv_matrix[2][1]*p[1] + inv_matrix[2][2])
+ );
+}
+
+inline Point
+Warp::transform_backward(const Point& p)const
+{
+ return Point(
+ (matrix[0][0]*p[0] + matrix[0][1]*p[1] + matrix[0][2])/(matrix[2][0]*p[0] + matrix[2][1]*p[1] + matrix[2][2]),
+ (matrix[1][0]*p[0] + matrix[1][1]*p[1] + matrix[1][2])/(matrix[2][0]*p[0] + matrix[2][1]*p[1] + matrix[2][2])
+ );
+}
+
+inline Real
+Warp::transform_forward_z(const Point& p)const
+{
+ return inv_matrix[2][0]*p[0] + inv_matrix[2][1]*p[1] + inv_matrix[2][2];
+}
+
+inline Real
+Warp::transform_backward_z(const Point& p)const
+{
+ return matrix[2][0]*p[0] + matrix[2][1]*p[1] + matrix[2][2];
+}
+
+/*
+#define transform_forward(p) Point( \
+ cache_a*p[0] + cache_b*p[1] + cache_c*p[0]*p[1] + cache_d, \
+ cache_e*p[0] + cache_f*p[1] + cache_i*p[0]*p[1] + cache_j )
+
+#define transform_backward(p) Point( \
+ cache_a*p[0] + cache_b*p[1] + cache_c*p[0]*p[1] + cache_d, \
+ cache_e*p[0] + cache_f*p[1] + cache_i*p[0]*p[1] + cache_j )
+*/
+
+#define triangle_area(a,b,c) (0.5*(-b[0]*a[1]+c[0]*a[1]+a[0]*b[1]-c[0]*b[1]-a[0]*c[1]+b[0]*c[1]))
+#define quad_area(a,b,c,d) (triangle_area(a,b,c)+triangle_area(a,c,d))
+
+Real mat3_determinant(Real matrix[3][3])
+{
+ Real ret;
+
+ ret = (matrix[0][0] *
+ (matrix[1][1] * matrix[2][2] -
+ matrix[1][2] * matrix[2][1]));
+ ret -= (matrix[1][0] *
+ (matrix[0][1] * matrix[2][2] -
+ matrix[0][2] * matrix[2][1]));
+ ret += (matrix[2][0] *
+ (matrix[0][1] * matrix[1][2] -
+ matrix[0][2] * matrix[1][1]));
+
+return ret;
+}
+
+void mat3_invert(Real in[3][3], Real out[3][3])
+{
+ Real det(mat3_determinant(in));
+
+ if (det == 0.0)
+ return;
+
+ det = 1.0 / det;
+
+ out[0][0] = (in[1][1] * in[2][2] -
+ in[1][2] * in[2][1]) * det;
+
+ out[1][0] = - (in[1][0] * in[2][2] -
+ in[1][2] * in[2][0]) * det;
+
+ out[2][0] = (in[1][0] * in[2][1] -
+ in[1][1] * in[2][0]) * det;
+
+ out[0][1] = - (in[0][1] * in[2][2] -
+ in[0][2] * in[2][1]) * det;
+
+ out[1][1] = (in[0][0] * in[2][2] -
+ in[0][2] * in[2][0]) * det;
+
+ out[2][1] = - (in[0][0] * in[2][1] -
+ in[0][1] * in[2][0]) * det;
+
+ out[0][2] = (in[0][1] * in[1][2] -
+ in[0][2] * in[1][1]) * det;
+
+ out[1][2] = - (in[0][0] * in[1][2] -
+ in[0][2] * in[1][0]) * det;
+
+ out[2][2] = (in[0][0] * in[1][1] -
+ in[0][1] * in[1][0]) * det;
+
+}
+
+void
+Warp::sync()
+{
+/* cache_a=(-dest_tl[0]+dest_tr[0])/(src_br[1]-src_tl[1]);
+ cache_b=(-dest_tl[0]+dest_bl[0])/(src_br[0]-src_tl[0]);
+ cache_c=(dest_tl[0]-dest_tr[0]+dest_br[0]-dest_bl[0])/((src_br[1]-src_tl[1])*(src_br[0]-src_tl[0]));
+ cache_d=dest_tl[0];
+
+ cache_e=(-dest_tl[1]+dest_tr[1])/(src_br[0]-src_tl[0]);
+ cache_f=(-dest_tl[1]+dest_bl[1])/(src_br[1]-src_tl[1]);
+ cache_i=(dest_tl[1]-dest_tr[1]+dest_br[1]-dest_bl[1])/((src_br[1]-src_tl[1])*(src_br[0]-src_tl[0]));
+ cache_j=dest_tl[1];
+*/
+
+/* matrix[2][0]=(dest_tl[0]-dest_tr[0]+dest_br[0]-dest_bl[0])/((src_br[1]-src_tl[1])*(src_br[0]-src_tl[0]));
+ matrix[2][1]=(dest_tl[1]-dest_tr[1]+dest_br[1]-dest_bl[1])/((src_br[1]-src_tl[1])*(src_br[0]-src_tl[0]));
+ matrix[2][2]=quad_area(dest_tl,dest_tr,dest_br,dest_bl)/((src_br[1]-src_tl[1])*(src_br[0]-src_tl[0]));
+
+ matrix[0][0]=-(-dest_tl[1]+dest_tr[1])/(src_br[0]-src_tl[0]);
+ matrix[0][1]=-(-dest_tl[1]+dest_bl[1])/(src_br[1]-src_tl[1]);
+
+ matrix[1][0]=-(-dest_tl[0]+dest_tr[0])/(src_br[1]-src_tl[1]);
+ matrix[1][1]=-(-dest_tl[0]+dest_bl[0])/(src_br[0]-src_tl[0]);
+
+ matrix[0][2]=matrix[0][0]*dest_tl[0] + matrix[0][1]*dest_tl[1];
+ matrix[1][2]=matrix[1][0]*dest_tl[0] + matrix[1][1]*dest_tl[1];
+*/
+
+#define matrix tmp
+ Real tmp[3][3];
+
+ const Real& x1(min(src_br[0],src_tl[0]));
+ const Real& y1(min(src_br[1],src_tl[1]));
+ const Real& x2(max(src_br[0],src_tl[0]));
+ const Real& y2(max(src_br[1],src_tl[1]));
+
+ Real tx1(dest_bl[0]);
+ Real ty1(dest_bl[1]);
+ Real tx2(dest_br[0]);
+ Real ty2(dest_br[1]);
+ Real tx3(dest_tl[0]);
+ Real ty3(dest_tl[1]);
+ Real tx4(dest_tr[0]);
+ Real ty4(dest_tr[1]);
+
+ if(src_br[0]<src_tl[0])
+ swap(tx3,tx4),swap(ty3,ty4),swap(tx1,tx2),swap(ty1,ty2);
+
+ if(src_br[1]>src_tl[1])
+ swap(tx3,tx1),swap(ty3,ty1),swap(tx4,tx2),swap(ty4,ty2);
+
+ Real scalex;
+ Real scaley;
+
+ scalex = scaley = 1.0;
+
+ if ((x2 - x1) > 0)
+ scalex = 1.0 / (Real) (x2 - x1);
+
+ if ((y2 - y1) > 0)
+ scaley = 1.0 / (Real) (y2 - y1);
+
+ /* Determine the perspective transform that maps from
+ * the unit cube to the transformed coordinates
+ */
+ {
+ Real dx1, dx2, dx3, dy1, dy2, dy3;
+
+ dx1 = tx2 - tx4;
+ dx2 = tx3 - tx4;
+ dx3 = tx1 - tx2 + tx4 - tx3;
+
+ dy1 = ty2 - ty4;
+ dy2 = ty3 - ty4;
+ dy3 = ty1 - ty2 + ty4 - ty3;
+
+ /* Is the mapping affine? */
+ if ((dx3 == 0.0) && (dy3 == 0.0))
+ {
+ matrix[0][0] = tx2 - tx1;
+ matrix[0][1] = tx4 - tx2;
+ matrix[0][2] = tx1;
+ matrix[1][0] = ty2 - ty1;
+ matrix[1][1] = ty4 - ty2;
+ matrix[1][2] = ty1;
+ matrix[2][0] = 0.0;
+ matrix[2][1] = 0.0;
+ }
+ else
+ {
+ Real det1, det2;
+
+ det1 = dx3 * dy2 - dy3 * dx2;
+ det2 = dx1 * dy2 - dy1 * dx2;
+
+ if (det1 == 0.0 && det2 == 0.0)
+ matrix[2][0] = 1.0;
+ else
+ matrix[2][0] = det1 / det2;
+
+ det1 = dx1 * dy3 - dy1 * dx3;
+
+ if (det1 == 0.0 && det2 == 0.0)
+ matrix[2][1] = 1.0;
+ else
+ matrix[2][1] = det1 / det2;
+
+ matrix[0][0] = tx2 - tx1 + matrix[2][0] * tx2;
+ matrix[0][1] = tx3 - tx1 + matrix[2][1] * tx3;
+ matrix[0][2] = tx1;
+
+ matrix[1][0] = ty2 - ty1 + matrix[2][0] * ty2;
+ matrix[1][1] = ty3 - ty1 + matrix[2][1] * ty3;
+ matrix[1][2] = ty1;
+ }
+
+ matrix[2][2] = 1.0;
+ }
+#undef matrix
+
+ Real scaletrans[3][3]={
+ { scalex, 0, -x1*scalex },
+ { 0, scaley, -y1*scaley },
+ { 0, 0, 1 }
+ };
+
+ Real t1,t2,t3;
+
+ for (int i = 0; i < 3; i++)
+ {
+ t1 = tmp[i][0];
+ t2 = tmp[i][1];
+ t3 = tmp[i][2];
+
+ for (int j = 0; j < 3; j++)
+ {
+ matrix[i][j] = t1 * scaletrans[0][j];
+ matrix[i][j] += t2 * scaletrans[1][j];
+ matrix[i][j] += t3 * scaletrans[2][j];
+ }
+ }
+
+ mat3_invert(matrix, inv_matrix);
+/*
+ gimp_matrix3_identity (result);
+ gimp_matrix3_translate (result, -x1, -y1);
+ gimp_matrix3_scale (result, scalex, scaley);
+ gimp_matrix3_mult (&matrix, result);
+*/
+}
+
+bool
+Warp::set_param(const String & param, const ValueBase &value)
+{
+ IMPORT_PLUS(src_tl,sync());
+ IMPORT_PLUS(src_br,sync());
+ IMPORT_PLUS(dest_tl,sync());
+ IMPORT_PLUS(dest_tr,sync());
+ IMPORT_PLUS(dest_bl,sync());
+ IMPORT_PLUS(dest_br,sync());
+ IMPORT(clip);
+ IMPORT(horizon);
+
+ return false;
+}
+
+ValueBase
+Warp::get_param(const String ¶m)const
+{
+ EXPORT(src_tl);
+ EXPORT(src_br);
+ EXPORT(dest_tl);
+ EXPORT(dest_tr);
+ EXPORT(dest_bl);
+ EXPORT(dest_br);
+ EXPORT(clip);
+ EXPORT(horizon);
+
+ EXPORT_NAME();
+ EXPORT_VERSION();
+
+ return ValueBase();
+}
+
+Layer::Vocab
+Warp::get_param_vocab()const
+{
+ Layer::Vocab ret;
+
+ ret.push_back(ParamDesc("src_tl")
+ .set_local_name(_("Source TL"))
+ .set_box("src_br")
+ );
+
+ ret.push_back(ParamDesc("src_br")
+ .set_local_name(_("Source BR"))
+ );
+
+ ret.push_back(ParamDesc("dest_tl")
+ .set_local_name(_("Dest TL"))
+ .set_connect("dest_tr")
+ );
+
+ ret.push_back(ParamDesc("dest_tr")
+ .set_local_name(_("Dest TR"))
+ .set_connect("dest_br")
+ );
+
+ ret.push_back(ParamDesc("dest_br")
+ .set_local_name(_("Dest BR"))
+ .set_connect("dest_bl")
+ );
+
+ ret.push_back(ParamDesc("dest_bl")
+ .set_local_name(_("Dest BL"))
+ .set_connect("dest_tl")
+ );
+
+ ret.push_back(ParamDesc("clip")
+ .set_local_name(_("Clip"))
+ );
+
+ ret.push_back(ParamDesc("horizon")
+ .set_local_name(_("Horizon"))
+ );
+
+ return ret;
+}
+
+
+class Warp_Trans : public Transform
+{
+ etl::handle<const Warp> layer;
+public:
+ Warp_Trans(const Warp* x):Transform(x->get_guid()),layer(x) { }
+
+ synfig::Vector perform(const synfig::Vector& x)const
+ {
+ return layer->transform_backward(x);
+ //Point pos(x-layer->origin);
+ //return Point(layer->cos_val*pos[0]-layer->sin_val*pos[1],layer->sin_val*pos[0]+layer->cos_val*pos[1])+layer->origin;
+ }
+
+ synfig::Vector unperform(const synfig::Vector& x)const
+ {
+
+ return layer->transform_forward(x);
+ //Point pos(x-layer->origin);
+ //return Point(layer->cos_val*pos[0]+layer->sin_val*pos[1],-layer->sin_val*pos[0]+layer->cos_val*pos[1])+layer->origin;
+ }
+};
+etl::handle<Transform>
+Warp::get_transform()const
+{
+ return new Warp_Trans(this);
+}
+
+synfig::Layer::Handle
+Warp::hit_check(synfig::Context context, const synfig::Point &p)const
+{
+ Point newpos(transform_forward(p));
+
+ if(clip)
+ {
+ Rect rect(src_tl,src_br);
+ if(!rect.is_inside(newpos))
+ return 0;
+ }
+
+ return context.hit_check(newpos);
+}
+
+Color
+Warp::get_color(Context context, const Point &p)const
+{
+ Point newpos(transform_forward(p));
+
+ if(clip)
+ {
+ Rect rect(src_tl,src_br);
+ if(!rect.is_inside(newpos))
+ return Color::alpha();
+ }
+
+ const float z(transform_backward_z(newpos));
+ if(z>0 && z<horizon)
+ return context.get_color(newpos);
+ else
+ return Color::alpha();
+}
+
+//#define ACCEL_WARP_IS_BROKEN 1
+
+bool
+Warp::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
+{
+ SuperCallback stageone(cb,0,9000,10000);
+ SuperCallback stagetwo(cb,9000,10000,10000);
+
+ Real pw=(renddesc.get_w())/(renddesc.get_br()[0]-renddesc.get_tl()[0]);
+ Real ph=(renddesc.get_h())/(renddesc.get_br()[1]-renddesc.get_tl()[1]);
+
+ if(cb && !cb->amount_complete(0,10000))
+ return false;
+
+ Point tl(renddesc.get_tl());
+ Point br(renddesc.get_br());
+
+ Rect bounding_rect;
+
+ Rect render_rect(tl,br);
+ Rect clip_rect(Rect::full_plane());
+ Rect dest_rect(dest_tl,dest_br); dest_rect.expand(dest_tr).expand(dest_bl);
+
+ Real zoom_factor(1.0);
+
+ // Quick exclusion clip, if necessary
+ if(clip && !intersect(render_rect,dest_rect))
+ {
+ surface->set_wh(renddesc.get_w(),renddesc.get_h());
+ surface->clear();
+ return true;
+ }
+
+ {
+ Rect other(render_rect);
+ if(clip)
+ other&=dest_rect;
+
+ Point min(other.get_min());
+ Point max(other.get_max());
+
+ bool init_point_set=false;
+
+ // Point trans_point[4];
+ Point p;
+ // Real trans_z[4];
+ Real z,minz(10000000000000.0f),maxz(0);
+
+ //! \todo checking the 4 corners for 0<=z<horizon*2 and using
+ //! only 4 corners which satisfy this condition isn't the
+ //! right thing to do. It's possible that none of the 4
+ //! corners fall within that range, and yet content of the
+ //! tile does.
+ p=transform_forward(min);
+ z=transform_backward_z(p);
+ if(z>0 && z<horizon*2)
+ {
+ if(init_point_set)
+ bounding_rect.expand(p);
+ else
+ bounding_rect=Rect(p);
+ init_point_set=true;
+ maxz=std::max(maxz,z);
+ minz=std::min(minz,z);
+ }
+
+ p=transform_forward(max);
+ z=transform_backward_z(p);
+ if(z>0 && z<horizon*2)
+ {
+ if(init_point_set)
+ bounding_rect.expand(p);
+ else
+ bounding_rect=Rect(p);
+ init_point_set=true;
+ maxz=std::max(maxz,z);
+ minz=std::min(minz,z);
+ }
+
+ swap(min[1],max[1]);
+
+ p=transform_forward(min);
+ z=transform_backward_z(p);
+ if(z>0 && z<horizon*2)
+ {
+ if(init_point_set)
+ bounding_rect.expand(p);
+ else
+ bounding_rect=Rect(p);
+ init_point_set=true;
+ maxz=std::max(maxz,z);
+ minz=std::min(minz,z);
+ }
+
+ p=transform_forward(max);
+ z=transform_backward_z(p);
+ if(z>0 && z<horizon*2)
+ {
+ if(init_point_set)
+ bounding_rect.expand(p);
+ else
+ bounding_rect=Rect(p);
+ init_point_set=true;
+ maxz=std::max(maxz,z);
+ minz=std::min(minz,z);
+ }
+
+ if(!init_point_set)
+ {
+ surface->set_wh(renddesc.get_w(),renddesc.get_h());
+ surface->clear();
+ return true;
+ }
+ zoom_factor=(1+(maxz-minz));
+
+ }
+
+#ifdef ACCEL_WARP_IS_BROKEN
+ return Layer::accelerated_render(context,surface,quality,renddesc, cb);
+#else
+
+ /*swap(tl[1],br[1]);
+ bounding_rect
+ .expand(transform_forward(tl))
+ .expand(transform_forward(br))
+ ;
+ swap(tl[1],br[1]);*/
+
+ //synfig::warning("given window: [%f,%f]-[%f,%f] %dx%d",tl[0],tl[1],br[0],br[1],renddesc.get_w(),renddesc.get_h());
+ //synfig::warning("Projected: [%f,%f]-[%f,%f]",bounding_rect.get_min()[0],bounding_rect.get_min()[1],bounding_rect.get_max()[0],bounding_rect.get_max()[1]);
+
+ // If we are clipping, then go ahead and clip to the
+ // source rectangle
+ if(clip)
+ clip_rect&=Rect(src_tl,src_br);
+
+ // Bound ourselves to the bounding rectangle of
+ // what is under us
+ clip_rect&=context.get_full_bounding_rect();//.expand_x(abs(zoom_factor/pw)).expand_y(abs(zoom_factor/ph));
+
+ bounding_rect&=clip_rect;
+
+ Point min_point(bounding_rect.get_min());
+ Point max_point(bounding_rect.get_max());
+
+ // we're going to divide by the difference of these pairs soon;
+ // if they're the same, we'll be dividing by zero, and we don't
+ // want to do that!
+ // \todo what should we do in this case?
+ if (min_point[0] == max_point[0]) max_point[0] += 0.001;
+ if (min_point[1] == max_point[1]) max_point[1] += 0.001;
+
+ if(tl[0]>br[0])
+ {
+ tl[0]=max_point[0];
+ br[0]=min_point[0];
+ }
+ else
+ {
+ br[0]=max_point[0];
+ tl[0]=min_point[0];
+ }
+ if(tl[1]>br[1])
+ {
+ tl[1]=max_point[1];
+ br[1]=min_point[1];
+ }
+ else
+ {
+ br[1]=max_point[1];
+ tl[1]=min_point[1];
+ }
+
+
+
+ const int tmp_d(max(renddesc.get_w(),renddesc.get_h()));
+ Real src_pw=(tmp_d*zoom_factor)/(br[0]-tl[0]);
+ Real src_ph=(tmp_d*zoom_factor)/(br[1]-tl[1]);
+
+
+ RendDesc desc(renddesc);
+ desc.clear_flags();
+ //desc.set_flags(RendDesc::PX_ASPECT);
+ desc.set_tl(tl);
+ desc.set_br(br);
+ desc.set_wh(ceil_to_int(src_pw*(br[0]-tl[0])),ceil_to_int(src_ph*(br[1]-tl[1])));
+
+ //synfig::warning("surface to render: [%f,%f]-[%f,%f] %dx%d",desc.get_tl()[0],desc.get_tl()[1],desc.get_br()[0],desc.get_br()[1],desc.get_w(),desc.get_h());
+ if(desc.get_w()==0 && desc.get_h()==0)
+ {
+ surface->set_wh(renddesc.get_w(),renddesc.get_h());
+ surface->clear();
+ return true;
+ }
+
+ // Recalculate the pixel widths for the src renddesc
+ src_pw=(desc.get_w())/(desc.get_br()[0]-desc.get_tl()[0]);
+ src_ph=(desc.get_h())/(desc.get_br()[1]-desc.get_tl()[1]);
+
+
+ Surface source;
+ source.set_wh(desc.get_w(),desc.get_h());
+
+ if(!context.accelerated_render(&source,quality,desc,&stageone))
+ return false;
+
+ surface->set_wh(renddesc.get_w(),renddesc.get_h());
+ surface->clear();
+
+ Surface::pen pen(surface->begin());
+
+ if(quality<=4)
+ {
+ // CUBIC
+ int x,y;
+ float u,v;
+ Point point,tmp;
+ for(y=0,point[1]=renddesc.get_tl()[1];y<surface->get_h();y++,pen.inc_y(),pen.dec_x(x),point[1]+=1.0/ph)
+ {
+ for(x=0,point[0]=renddesc.get_tl()[0];x<surface->get_w();x++,pen.inc_x(),point[0]+=1.0/pw)
+ {
+ tmp=transform_forward(point);
+ const float z(transform_backward_z(tmp));
+ if(!clip_rect.is_inside(tmp) || !(z>0 && z<horizon))
+ {
+ (*surface)[y][x]=Color::alpha();
+ continue;
+ }
+
+ u=(tmp[0]-tl[0])*src_pw;
+ v=(tmp[1]-tl[1])*src_ph;
+
+ if(u<0 || v<0 || u>=source.get_w() || v>=source.get_h() || isnan(u) || isnan(v))
+ (*surface)[y][x]=context.get_color(tmp);
+ else
+ (*surface)[y][x]=source.cubic_sample(u,v);
+ }
+ if((y&31)==0 && cb)
+ {
+ if(!stagetwo.amount_complete(y,surface->get_h()))
+ return false;
+ }
+ }
+ }
+ else
+ if(quality<=6)
+ {
+ // INTERPOLATION_LINEAR
+ int x,y;
+ float u,v;
+ Point point,tmp;
+ for(y=0,point[1]=renddesc.get_tl()[1];y<surface->get_h();y++,pen.inc_y(),pen.dec_x(x),point[1]+=1.0/ph)
+ {
+ for(x=0,point[0]=renddesc.get_tl()[0];x<surface->get_w();x++,pen.inc_x(),point[0]+=1.0/pw)
+ {
+ tmp=transform_forward(point);
+ const float z(transform_backward_z(tmp));
+ if(!clip_rect.is_inside(tmp) || !(z>0 && z<horizon))
+ {
+ (*surface)[y][x]=Color::alpha();
+ continue;
+ }
+
+ u=(tmp[0]-tl[0])*src_pw;
+ v=(tmp[1]-tl[1])*src_ph;
+
+ if(u<0 || v<0 || u>=source.get_w() || v>=source.get_h() || isnan(u) || isnan(v))
+ (*surface)[y][x]=context.get_color(tmp);
+ else
+ (*surface)[y][x]=source.linear_sample(u,v);
+ }
+ if((y&31)==0 && cb)
+ {
+ if(!stagetwo.amount_complete(y,surface->get_h()))
+ return false;
+ }
+ }
+ }
+ else
+ {
+ // NEAREST_NEIGHBOR
+ int x,y;
+ float u,v;
+ Point point,tmp;
+ for(y=0,point[1]=renddesc.get_tl()[1];y<surface->get_h();y++,pen.inc_y(),pen.dec_x(x),point[1]+=1.0/ph)
+ {
+ for(x=0,point[0]=renddesc.get_tl()[0];x<surface->get_w();x++,pen.inc_x(),point[0]+=1.0/pw)
+ {
+ tmp=transform_forward(point);
+ const float z(transform_backward_z(tmp));
+ if(!clip_rect.is_inside(tmp) || !(z>0 && z<horizon))
+ {
+ (*surface)[y][x]=Color::alpha();
+ continue;
+ }
+
+ u=(tmp[0]-tl[0])*src_pw;
+ v=(tmp[1]-tl[1])*src_ph;
+
+ if(u<0 || v<0 || u>=source.get_w() || v>=source.get_h() || isnan(u) || isnan(v))
+ (*surface)[y][x]=context.get_color(tmp);
+ else
+ //pen.set_value(source[v][u]);
+ (*surface)[y][x]=source[floor_to_int(v)][floor_to_int(u)];
+ }
+ if((y&31)==0 && cb)
+ {
+ if(!stagetwo.amount_complete(y,surface->get_h()))
+ return false;
+ }
+ }
+ }
+
+#endif
+
+ if(cb && !cb->amount_complete(10000,10000)) return false;
+
+ return true;
+}
+
+synfig::Rect
+Warp::get_bounding_rect()const
+{
+ return Rect::full_plane();
+}
+
+synfig::Rect
+Warp::get_full_bounding_rect(Context context)const
+{
+// return Rect::full_plane();
+
+ Rect under(context.get_full_bounding_rect());
+
+ if(clip)
+ {
+ under&=Rect(src_tl,src_br);
+ }
+
+ return get_transform()->perform(under);
+
+ /*
+ Rect under(context.get_full_bounding_rect());
+ Rect ret(Rect::zero());
+
+ if(under.area()==HUGE_VAL)
+ return Rect::full_plane();
+
+ ret.expand(
+ transform_backward(
+ under.get_min()
+ )
+ );
+ ret.expand(
+ transform_backward(
+ under.get_max()
+ )
+ );
+ ret.expand(
+ transform_backward(
+ Vector(
+ under.get_min()[0],
+ under.get_max()[1]
+ )
+ )
+ );
+ ret.expand(
+ transform_backward(
+ Vector(
+ under.get_max()[0],
+ under.get_min()[1]
+ )
+ )
+ );
+
+ if(ret.area()==HUGE_VAL)
+ return Rect::full_plane();
+
+ return ret;
+ */
+}
projects / synfig.git / blobdiff