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

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