synfig-core/tags/synfig_0_61_05/synfig-core/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) 2002-2005 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 **
  18 ** === N O T E S ===========================================================
  19 **
  20 ** ========================================================================= */
  21
  22 /* === H E A D E R S ======================================================= */
  23
  24 #ifdef USING_PCH
  25 #       include "pch.h"
  26 #else
  27 #ifdef HAVE_CONFIG_H
  28 #       include <config.h>
  29 #endif
  30
  31 #include "rotate.h"
  32 #include <synfig/string.h>
  33 #include <synfig/time.h>
  34 #include <synfig/context.h>
  35 #include <synfig/paramdesc.h>
  36 #include <synfig/renddesc.h>
  37 #include <synfig/surface.h>
  38 #include <synfig/value.h>
  39 #include <synfig/valuenode.h>
  40 #include <synfig/transform.h>
  41 #include <ETL/misc>
  42
  43 #endif
  44
  45 /* === M A C R O S ========================================================= */
  46
  47 /* === G L O B A L S ======================================================= */
  48
  49 SYNFIG_LAYER_INIT(Rotate);
  50 SYNFIG_LAYER_SET_NAME(Rotate,"rotate");
  51 SYNFIG_LAYER_SET_LOCAL_NAME(Rotate,_("Rotate"));
  52 SYNFIG_LAYER_SET_CATEGORY(Rotate,_("Transform"));
  53 SYNFIG_LAYER_SET_VERSION(Rotate,"0.1");
  54 SYNFIG_LAYER_SET_CVS_ID(Rotate,"$Id: rotate.cpp,v 1.2 2005/01/24 05:00:18 darco Exp $");
  55
  56 /* === P R O C E D U R E S ================================================= */
  57
  58 /* === M E T H O D S ======================================================= */
  59
  60 /* === E N T R Y P O I N T ================================================= */
  61
  62 Rotate::Rotate():
  63         origin  (0,0),
  64         amount  (Angle::deg(0)),
  65         sin_val (0),
  66         cos_val (1)
  67 {
  68 }
  69
  70 Rotate::~Rotate()
  71 {
  72 }
  73
  74 bool
  75 Rotate::set_param(const String & param, const ValueBase &value)
  76 {
  77         IMPORT(origin);
  78
  79         if(param=="amount" && value.same_as(amount))
  80         {
  81                 amount=value.get(amount);
  82                 sin_val=Angle::sin(amount).get();
  83                 cos_val=Angle::cos(amount).get();
  84                 return true;
  85         }
  86
  87         return false;
  88 }
  89
  90 ValueBase
  91 Rotate::get_param(const String &param)const
  92 {
  93         EXPORT(origin);
  94         EXPORT(amount);
  95
  96         EXPORT_NAME();
  97         EXPORT_VERSION();
  98
  99         return ValueBase();
 100 }
 101
 102 Layer::Vocab
 103 Rotate::get_param_vocab()const
 104 {
 105         Layer::Vocab ret;
 106
 107         ret.push_back(ParamDesc("origin")
 108                 .set_local_name(_("Origin"))
 109                 .set_description(_("Point where you want the origin to be"))
 110         );
 111
 112         ret.push_back(ParamDesc("amount")
 113                 .set_local_name(_("Amount"))
 114                 .set_description(_("Amount of rotation"))
 115                 .set_origin("origin")
 116         );
 117
 118         return ret;
 119 }
 120
 121 class Rotate_Trans : public Transform
 122 {
 123         etl::handle<const Rotate> layer;
 124 public:
 125         Rotate_Trans(const Rotate* x):Transform(x->get_guid()),layer(x) { }
 126
 127         synfig::Vector perform(const synfig::Vector& x)const
 128         {
 129                 Point pos(x-layer->origin);
 130                 return Point(layer->cos_val*pos[0]-layer->sin_val*pos[1],layer->sin_val*pos[0]+layer->cos_val*pos[1])+layer->origin;
 131         }
 132
 133         synfig::Vector unperform(const synfig::Vector& x)const
 134         {
 135                 Point pos(x-layer->origin);
 136                 return Point(layer->cos_val*pos[0]+layer->sin_val*pos[1],-layer->sin_val*pos[0]+layer->cos_val*pos[1])+layer->origin;
 137         }
 138 };
 139 etl::handle<Transform>
 140 Rotate::get_transform()const
 141 {
 142         return new Rotate_Trans(this);
 143 }
 144
 145 synfig::Layer::Handle
 146 Rotate::hit_check(synfig::Context context, const synfig::Point &p)const
 147 {
 148         Point pos(p-origin);
 149         Point newpos(cos_val*pos[0]+sin_val*pos[1],-sin_val*pos[0]+cos_val*pos[1]);
 150         newpos+=origin;
 151         return context.hit_check(newpos);
 152 }
 153
 154 Color
 155 Rotate::get_color(Context context, const Point &p)const
 156 {
 157         Point pos(p-origin);
 158         Point newpos(cos_val*pos[0]+sin_val*pos[1],-sin_val*pos[0]+cos_val*pos[1]);
 159         newpos+=origin;
 160         return context.get_color(newpos);
 161 }
 162
 163 bool
 164 Rotate::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 165 {
 166         if(amount.dist(Angle::deg(0))==Angle::deg(0))
 167                 return context.accelerated_render(surface,quality,renddesc,cb);
 168         if(amount.dist(Angle::deg(180))==Angle::deg(0))
 169         {
 170                 RendDesc desc(renddesc);
 171                 desc.clear_flags();
 172                 Point tmp;
 173                 tmp=renddesc.get_tl()-origin;
 174                 desc.set_tl(Point(-tmp[0],-tmp[1])+origin);
 175                 tmp=renddesc.get_br()-origin;
 176                 desc.set_br(Point(-tmp[0],-tmp[1])+origin);
 177                 return context.accelerated_render(surface,quality,desc,cb);
 178         }
 179
 180         SuperCallback stageone(cb,0,9000,10000);
 181         SuperCallback stagetwo(cb,9000,10000,10000);
 182
 183         if(cb && !cb->amount_complete(0,10000))
 184                 return false;
 185
 186         Point tl(renddesc.get_tl()-origin);
 187         Point br(renddesc.get_br()-origin);
 188         Point rot_tl(cos_val*tl[0]+sin_val*tl[1],-sin_val*tl[0]+cos_val*tl[1]);
 189         Point rot_br(cos_val*br[0]+sin_val*br[1],-sin_val*br[0]+cos_val*br[1]);
 190         Point rot_tr(cos_val*br[0]+sin_val*tl[1],-sin_val*br[0]+cos_val*tl[1]);
 191         Point rot_bl(cos_val*tl[0]+sin_val*br[1],-sin_val*tl[0]+cos_val*br[1]);
 192         rot_tl+=origin;
 193         rot_br+=origin;
 194         rot_tr+=origin;
 195         rot_bl+=origin;
 196
 197         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]));
 198         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]));
 199
 200         if(tl[0]>br[0])
 201         {
 202                 tl[0]=max_point[0];
 203                 br[0]=min_point[0];
 204         }
 205         else
 206         {
 207                 br[0]=max_point[0];
 208                 tl[0]=min_point[0];
 209         }
 210         if(tl[1]>br[1])
 211         {
 212                 tl[1]=max_point[1];
 213                 br[1]=min_point[1];
 214         }
 215         else
 216         {
 217                 br[1]=max_point[1];
 218                 tl[1]=min_point[1];
 219         }
 220
 221         Real pw=(renddesc.get_w())/(renddesc.get_br()[0]-renddesc.get_tl()[0]);
 222         Real ph=(renddesc.get_h())/(renddesc.get_br()[1]-renddesc.get_tl()[1]);
 223
 224         RendDesc desc(renddesc);
 225         desc.clear_flags();
 226         //desc.set_flags(RendDesc::PX_ASPECT);
 227         desc.set_tl(tl);
 228         desc.set_br(br);
 229         desc.set_wh(round_to_int(pw*(br[0]-tl[0])),round_to_int(ph*(br[1]-tl[1])));
 230
 231         //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());
 232         //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());
 233
 234         Surface source;
 235         source.set_wh(desc.get_w(),desc.get_h());
 236
 237         if(!context.accelerated_render(&source,quality,desc,&stageone))
 238                 return false;
 239
 240         surface->set_wh(renddesc.get_w(),renddesc.get_h());
 241
 242         Surface::pen pen(surface->begin());
 243
 244         if(quality<=4)
 245         {
 246                 // CUBIC
 247                 int x,y;//,u,v,u2,v2;
 248                 Point point,tmp;
 249                 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)
 250                 {
 251                         for(x=0,point[0]=renddesc.get_tl()[0];x<surface->get_w();x++,pen.inc_x(),point[0]+=1.0/pw)
 252                         {
 253                                 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;
 254                                 (*surface)[y][x]=source.cubic_sample((tmp[0]-tl[0])*pw,(tmp[1]-tl[1])*ph);
 255                         }
 256                         if(y&31==0 && cb)
 257                         {
 258                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 259                                         return false;
 260                         }
 261                 }
 262         }
 263         else
 264         if(quality<=6)
 265         {
 266                 // INTERPOLATION_LINEAR
 267                 int x,y;//,u,v,u2,v2;
 268                 Point point,tmp;
 269                 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)
 270                 {
 271                         for(x=0,point[0]=renddesc.get_tl()[0];x<surface->get_w();x++,pen.inc_x(),point[0]+=1.0/pw)
 272                         {
 273                                 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;
 274                                 (*surface)[y][x]=source.linear_sample((tmp[0]-tl[0])*pw,(tmp[1]-tl[1])*ph);
 275                         }
 276                         if(y&31==0 && cb)
 277                         {
 278                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 279                                         return false;
 280                         }
 281                 }
 282         }
 283         else
 284         {
 285                 // NEAREST_NEIGHBOR
 286                 int x,y,u,v;
 287                 Point point,tmp;
 288                 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)
 289                 {
 290                         for(x=0,point[0]=renddesc.get_tl()[0];x<surface->get_w();x++,pen.inc_x(),point[0]+=1.0/pw)
 291                         {
 292                                 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;
 293                                 u=int((tmp[0]-tl[0])*pw);
 294                                 v=int((tmp[1]-tl[1])*ph);
 295                                 if(u<0)
 296                                         u=0;
 297                                 if(v<0)
 298                                         v=0;
 299                                 if(u>=source.get_w())
 300                                         u=source.get_w()-1;
 301                                 if(v>=source.get_h())
 302                                         v=source.get_h()-1;
 303                                 //pen.set_value(source[v][u]);
 304                                 (*surface)[y][x]=source[v][u];
 305                         }
 306                         if(y&31==0 && cb)
 307                         {
 308                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 309                                         return false;
 310                         }
 311                 }
 312         }
 313
 314         if(cb && !cb->amount_complete(10000,10000)) return false;
 315
 316         return true;
 317 }
 318
 319 Rect
 320 Rotate::get_full_bounding_rect(Context context)const
 321 {
 322         Rect under(context.get_full_bounding_rect());
 323         return get_transform()->perform(under);
 324 }
 325