synfig-core/trunk/src/modules/lyr_std/rotate.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file rotate.cpp
   3 **      \brief Template Header
   4 **
   5 **      \legal
   6 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   7 **
   8 **      This package is free software; you can redistribute it and/or
   9 **      modify it under the terms of the GNU General Public License as
  10 **      published by the Free Software Foundation; either version 2 of
  11 **      the License, or (at your option) any later version.
  12 **
  13 **      This package is distributed in the hope that it will be useful,
  14 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16 **      General Public License for more details.
  17 **      \endlegal
  18 **
  19 ** === N O T E S ===========================================================
  20 **
  21 ** ========================================================================= */
  22
  23 /* === H E A D E R S ======================================================= */
  24
  25 #ifdef USING_PCH
  26 #       include "pch.h"
  27 #else
  28 #ifdef HAVE_CONFIG_H
  29 #       include <config.h>
  30 #endif
  31
  32 #include "rotate.h"
  33 #include <synfig/string.h>
  34 #include <synfig/time.h>
  35 #include <synfig/context.h>
  36 #include <synfig/paramdesc.h>
  37 #include <synfig/renddesc.h>
  38 #include <synfig/surface.h>
  39 #include <synfig/value.h>
  40 #include <synfig/valuenode.h>
  41 #include <synfig/transform.h>
  42 #include <ETL/misc>
  43
  44 #endif
  45
  46 /* === M A C R O S ========================================================= */
  47
  48 /* === G L O B A L S ======================================================= */
  49
  50 SYNFIG_LAYER_INIT(Rotate);
  51 SYNFIG_LAYER_SET_NAME(Rotate,"rotate");
  52 SYNFIG_LAYER_SET_LOCAL_NAME(Rotate,_("Rotate"));
  53 SYNFIG_LAYER_SET_CATEGORY(Rotate,_("Transform"));
  54 SYNFIG_LAYER_SET_VERSION(Rotate,"0.1");
  55 SYNFIG_LAYER_SET_CVS_ID(Rotate,"$Id: rotate.cpp,v 1.2 2005/01/24 05:00:18 darco Exp $");
  56
  57 /* === P R O C E D U R E S ================================================= */
  58
  59 /* === M E T H O D S ======================================================= */
  60
  61 /* === E N T R Y P O I N T ================================================= */
  62
  63 Rotate::Rotate():
  64         origin  (0,0),
  65         amount  (Angle::deg(0)),
  66         sin_val (0),
  67         cos_val (1)
  68 {
  69 }
  70
  71 Rotate::~Rotate()
  72 {
  73 }
  74
  75 bool
  76 Rotate::set_param(const String & param, const ValueBase &value)
  77 {
  78         IMPORT(origin);
  79
  80         if(param=="amount" && value.same_as(amount))
  81         {
  82                 amount=value.get(amount);
  83                 sin_val=Angle::sin(amount).get();
  84                 cos_val=Angle::cos(amount).get();
  85                 return true;
  86         }
  87
  88         return false;
  89 }
  90
  91 ValueBase
  92 Rotate::get_param(const String &param)const
  93 {
  94         EXPORT(origin);
  95         EXPORT(amount);
  96
  97         EXPORT_NAME();
  98         EXPORT_VERSION();
  99
 100         return ValueBase();
 101 }
 102
 103 Layer::Vocab
 104 Rotate::get_param_vocab()const
 105 {
 106         Layer::Vocab ret;
 107
 108         ret.push_back(ParamDesc("origin")
 109                 .set_local_name(_("Origin"))
 110                 .set_description(_("Point where you want the origin to be"))
 111         );
 112
 113         ret.push_back(ParamDesc("amount")
 114                 .set_local_name(_("Amount"))
 115                 .set_description(_("Amount of rotation"))
 116                 .set_origin("origin")
 117         );
 118
 119         return ret;
 120 }
 121
 122 class Rotate_Trans : public Transform
 123 {
 124         etl::handle<const Rotate> layer;
 125 public:
 126         Rotate_Trans(const Rotate* x):Transform(x->get_guid()),layer(x) { }
 127
 128         synfig::Vector perform(const synfig::Vector& x)const
 129         {
 130                 Point pos(x-layer->origin);
 131                 return Point(layer->cos_val*pos[0]-layer->sin_val*pos[1],layer->sin_val*pos[0]+layer->cos_val*pos[1])+layer->origin;
 132         }
 133
 134         synfig::Vector unperform(const synfig::Vector& x)const
 135         {
 136                 Point pos(x-layer->origin);
 137                 return Point(layer->cos_val*pos[0]+layer->sin_val*pos[1],-layer->sin_val*pos[0]+layer->cos_val*pos[1])+layer->origin;
 138         }
 139 };
 140 etl::handle<Transform>
 141 Rotate::get_transform()const
 142 {
 143         return new Rotate_Trans(this);
 144 }
 145
 146 synfig::Layer::Handle
 147 Rotate::hit_check(synfig::Context context, const synfig::Point &p)const
 148 {
 149         Point pos(p-origin);
 150         Point newpos(cos_val*pos[0]+sin_val*pos[1],-sin_val*pos[0]+cos_val*pos[1]);
 151         newpos+=origin;
 152         return context.hit_check(newpos);
 153 }
 154
 155 Color
 156 Rotate::get_color(Context context, const Point &p)const
 157 {
 158         Point pos(p-origin);
 159         Point newpos(cos_val*pos[0]+sin_val*pos[1],-sin_val*pos[0]+cos_val*pos[1]);
 160         newpos+=origin;
 161         return context.get_color(newpos);
 162 }
 163
 164 bool
 165 Rotate::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 166 {
 167         if(amount.dist(Angle::deg(0))==Angle::deg(0))
 168                 return context.accelerated_render(surface,quality,renddesc,cb);
 169         if(amount.dist(Angle::deg(180))==Angle::deg(0))
 170         {
 171                 RendDesc desc(renddesc);
 172                 desc.clear_flags();
 173                 Point tmp;
 174                 tmp=renddesc.get_tl()-origin;
 175                 desc.set_tl(Point(-tmp[0],-tmp[1])+origin);
 176                 tmp=renddesc.get_br()-origin;
 177                 desc.set_br(Point(-tmp[0],-tmp[1])+origin);
 178                 return context.accelerated_render(surface,quality,desc,cb);
 179         }
 180
 181         SuperCallback stageone(cb,0,9000,10000);
 182         SuperCallback stagetwo(cb,9000,10000,10000);
 183
 184         if(cb && !cb->amount_complete(0,10000))
 185                 return false;
 186
 187         Point tl(renddesc.get_tl()-origin);
 188         Point br(renddesc.get_br()-origin);
 189         Point rot_tl(cos_val*tl[0]+sin_val*tl[1],-sin_val*tl[0]+cos_val*tl[1]);
 190         Point rot_br(cos_val*br[0]+sin_val*br[1],-sin_val*br[0]+cos_val*br[1]);
 191         Point rot_tr(cos_val*br[0]+sin_val*tl[1],-sin_val*br[0]+cos_val*tl[1]);
 192         Point rot_bl(cos_val*tl[0]+sin_val*br[1],-sin_val*tl[0]+cos_val*br[1]);
 193         rot_tl+=origin;
 194         rot_br+=origin;
 195         rot_tr+=origin;
 196         rot_bl+=origin;
 197
 198         Point min_point(min(min(min(rot_tl[0],rot_br[0]),rot_tr[0]),rot_bl[0]),min(min(min(rot_tl[1],rot_br[1]),rot_tr[1]),rot_bl[1]));
 199         Point max_point(max(max(max(rot_tl[0],rot_br[0]),rot_tr[0]),rot_bl[0]),max(max(max(rot_tl[1],rot_br[1]),rot_tr[1]),rot_bl[1]));
 200
 201         if(tl[0]>br[0])
 202         {
 203                 tl[0]=max_point[0];
 204                 br[0]=min_point[0];
 205         }
 206         else
 207         {
 208                 br[0]=max_point[0];
 209                 tl[0]=min_point[0];
 210         }
 211         if(tl[1]>br[1])
 212         {
 213                 tl[1]=max_point[1];
 214                 br[1]=min_point[1];
 215         }
 216         else
 217         {
 218                 br[1]=max_point[1];
 219                 tl[1]=min_point[1];
 220         }
 221
 222         Real pw=(renddesc.get_w())/(renddesc.get_br()[0]-renddesc.get_tl()[0]);
 223         Real ph=(renddesc.get_h())/(renddesc.get_br()[1]-renddesc.get_tl()[1]);
 224
 225         RendDesc desc(renddesc);
 226         desc.clear_flags();
 227         //desc.set_flags(RendDesc::PX_ASPECT);
 228         desc.set_tl(tl);
 229         desc.set_br(br);
 230         desc.set_wh(round_to_int(pw*(br[0]-tl[0])),round_to_int(ph*(br[1]-tl[1])));
 231
 232         //synfig::warning("given window: [%f,%f]-[%f,%f] %dx%d",renddesc.get_tl()[0],renddesc.get_tl()[1],renddesc.get_br()[0],renddesc.get_br()[1],renddesc.get_w(),renddesc.get_h());
 233         //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());
 234
 235         Surface source;
 236         source.set_wh(desc.get_w(),desc.get_h());
 237
 238         if(!context.accelerated_render(&source,quality,desc,&stageone))
 239                 return false;
 240
 241         surface->set_wh(renddesc.get_w(),renddesc.get_h());
 242
 243         Surface::pen pen(surface->begin());
 244
 245         if(quality<=4)
 246         {
 247                 // CUBIC
 248                 int x,y;//,u,v,u2,v2;
 249                 Point point,tmp;
 250                 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)
 251                 {
 252                         for(x=0,point[0]=renddesc.get_tl()[0];x<surface->get_w();x++,pen.inc_x(),point[0]+=1.0/pw)
 253                         {
 254                                 tmp=Point(cos_val*(point[0]-origin[0])+sin_val*(point[1]-origin[1]),-sin_val*(point[0]-origin[0])+cos_val*(point[1]-origin[1])) +origin;
 255                                 (*surface)[y][x]=source.cubic_sample((tmp[0]-tl[0])*pw,(tmp[1]-tl[1])*ph);
 256                         }
 257                         if(y&31==0 && cb)
 258                         {
 259                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 260                                         return false;
 261                         }
 262                 }
 263         }
 264         else
 265         if(quality<=6)
 266         {
 267                 // INTERPOLATION_LINEAR
 268                 int x,y;//,u,v,u2,v2;
 269                 Point point,tmp;
 270                 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)
 271                 {
 272                         for(x=0,point[0]=renddesc.get_tl()[0];x<surface->get_w();x++,pen.inc_x(),point[0]+=1.0/pw)
 273                         {
 274                                 tmp=Point(cos_val*(point[0]-origin[0])+sin_val*(point[1]-origin[1]),-sin_val*(point[0]-origin[0])+cos_val*(point[1]-origin[1])) +origin;
 275                                 (*surface)[y][x]=source.linear_sample((tmp[0]-tl[0])*pw,(tmp[1]-tl[1])*ph);
 276                         }
 277                         if(y&31==0 && cb)
 278                         {
 279                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 280                                         return false;
 281                         }
 282                 }
 283         }
 284         else
 285         {
 286                 // NEAREST_NEIGHBOR
 287                 int x,y,u,v;
 288                 Point point,tmp;
 289                 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)
 290                 {
 291                         for(x=0,point[0]=renddesc.get_tl()[0];x<surface->get_w();x++,pen.inc_x(),point[0]+=1.0/pw)
 292                         {
 293                                 tmp=Point(cos_val*(point[0]-origin[0])+sin_val*(point[1]-origin[1]),-sin_val*(point[0]-origin[0])+cos_val*(point[1]-origin[1])) +origin;
 294                                 u=int((tmp[0]-tl[0])*pw);
 295                                 v=int((tmp[1]-tl[1])*ph);
 296                                 if(u<0)
 297                                         u=0;
 298                                 if(v<0)
 299                                         v=0;
 300                                 if(u>=source.get_w())
 301                                         u=source.get_w()-1;
 302                                 if(v>=source.get_h())
 303                                         v=source.get_h()-1;
 304                                 //pen.set_value(source[v][u]);
 305                                 (*surface)[y][x]=source[v][u];
 306                         }
 307                         if(y&31==0 && cb)
 308                         {
 309                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 310                                         return false;
 311                         }
 312                 }
 313         }
 314
 315         if(cb && !cb->amount_complete(10000,10000)) return false;
 316
 317         return true;
 318 }
 319
 320 Rect
 321 Rotate::get_full_bounding_rect(Context context)const
 322 {
 323         Rect under(context.get_full_bounding_rect());
 324         return get_transform()->perform(under);
 325 }
 326