examples/motion-blur/motion-blur-example.cpp

   1 /*
   2  * Copyright (c) 2017 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 #include <sstream>
  19 #include <iomanip>
  20
  21 #include "shared/view.h"
  22 #include <dali/dali.h>
  23 #include <dali-toolkit/dali-toolkit.h>
  24 #include <dali-toolkit/devel-api/controls/buttons/button-devel.h>
  25 #include <dali-toolkit/devel-api/shader-effects/motion-blur-effect.h>
  26
  27 using namespace Dali;
  28 using namespace Dali::Toolkit;
  29
  30
  31
  32 namespace // unnamed namespace
  33 {
  34
  35 ////////////////////////////////////////////////////
  36 //
  37 // Demo setup parameters
  38 //
  39
  40 const float MOTION_BLUR_ACTOR_WIDTH = 256;                                          // actor size on screen
  41 const float MOTION_BLUR_ACTOR_HEIGHT = 256;                                         // ""
  42 const unsigned int MOTION_BLUR_NUM_SAMPLES = 8;
  43
  44 const int MOTION_BLUR_NUM_ACTOR_IMAGES = 5;
  45 const char* MOTION_BLUR_ACTOR_IMAGE1( DEMO_IMAGE_DIR "image-with-border-1.jpg" );
  46 const char* MOTION_BLUR_ACTOR_IMAGE2( DEMO_IMAGE_DIR "image-with-border-2.jpg" );
  47 const char* MOTION_BLUR_ACTOR_IMAGE3( DEMO_IMAGE_DIR "image-with-border-3.jpg" );
  48 const char* MOTION_BLUR_ACTOR_IMAGE4( DEMO_IMAGE_DIR "image-with-border-4.jpg" );
  49 const char* MOTION_BLUR_ACTOR_IMAGE5( DEMO_IMAGE_DIR "image-with-border-1.jpg" );
  50
  51 const char* MOTION_BLUR_ACTOR_IMAGES[] = {
  52   MOTION_BLUR_ACTOR_IMAGE1,
  53   MOTION_BLUR_ACTOR_IMAGE2,
  54   MOTION_BLUR_ACTOR_IMAGE3,
  55   MOTION_BLUR_ACTOR_IMAGE4,
  56   MOTION_BLUR_ACTOR_IMAGE5,
  57 };
  58
  59 const int NUM_ACTOR_ANIMATIONS = 4;
  60 const int NUM_CAMERA_ANIMATIONS = 2;
  61
  62
  63 const char* BACKGROUND_IMAGE_PATH = DEMO_IMAGE_DIR "background-default.png";
  64
  65 const char* TOOLBAR_IMAGE( DEMO_IMAGE_DIR "top-bar.png" );
  66 const char* LAYOUT_IMAGE( DEMO_IMAGE_DIR "icon-change.png" );
  67 const char* LAYOUT_IMAGE_SELECTED( DEMO_IMAGE_DIR "icon-change-selected.png" );
  68 const char* APPLICATION_TITLE( "Motion Blur" );
  69 const char* EFFECTS_OFF_ICON( DEMO_IMAGE_DIR "icon-effects-off.png" );
  70 const char* EFFECTS_OFF_ICON_SELECTED( DEMO_IMAGE_DIR "icon-effects-off-selected.png" );
  71 const char* EFFECTS_ON_ICON( DEMO_IMAGE_DIR "icon-effects-on.png" );
  72 const char* EFFECTS_ON_ICON_SELECTED( DEMO_IMAGE_DIR "icon-effects-on-selected.png" );
  73
  74 const float UI_MARGIN = 4.0f;                              ///< Screen Margin for placement of UI buttons
  75
  76 const Vector3 BUTTON_SIZE_CONSTRAINT( 0.24f, 0.09f, 1.0f );
  77 const Vector3 BUTTON_TITLE_LABEL_TAP_HERE_SIZE_CONSTRAINT( 0.55f, 0.06f, 1.0f );
  78 const Vector3 BUTTON_TITLE_LABEL_INSTRUCTIONS_POPUP_SIZE_CONSTRAINT( 1.0f, 1.0f, 1.0f );
  79
  80 // move this button down a bit so it is visible on target and not covered up by toolbar
  81 const float BUTTON_TITLE_LABEL_Y_OFFSET = 0.05f;
  82
  83 const float ORIENTATION_DURATION = 0.5f;                  ///< Time to rotate to new orientation.
  84
  85 /**
  86  * @brief Set an image to image view, scaled-down to no more than the dimensions passed in.
  87  *
  88  * Uses SHRINK_TO_FIT which ensures the resulting image is
  89  * smaller than or equal to the specified dimensions while preserving its original aspect ratio.
  90  */
  91 void SetImageFittedInBox( ImageView& imageView, Property::Map& shaderEffect, const char * const imagePath, int maxWidth, int maxHeight )
  92 {
  93   Property::Map map;
  94   map[Visual::Property::TYPE] = Visual::IMAGE;
  95   map[ImageVisual::Property::URL] = imagePath;
  96   // Load the image nicely scaled-down to fit within the specified max width and height:
  97   map[ImageVisual::Property::DESIRED_WIDTH] = maxWidth;
  98   map[ImageVisual::Property::DESIRED_HEIGHT] = maxHeight;
  99   map[ImageVisual::Property::FITTING_MODE] = FittingMode::SHRINK_TO_FIT;
 100   map[ImageVisual::Property::SAMPLING_MODE] = SamplingMode::BOX_THEN_LINEAR;
 101   map.Merge( shaderEffect );
 102
 103   imageView.SetProperty( ImageView::Property::IMAGE, map );
 104 }
 105
 106 } // unnamed namespace
 107
 108
 109 //
 110 class MotionBlurExampleApp : public ConnectionTracker
 111 {
 112 public:
 113
 114   /**
 115      * DeviceOrientation describes the four different
 116      * orientations the device can be in based on accelerometer reports.
 117      */
 118   enum DeviceOrientation
 119   {
 120     PORTRAIT = 0,
 121     LANDSCAPE = 90,
 122     PORTRAIT_INVERSE = 180,
 123     LANDSCAPE_INVERSE = 270
 124   };
 125
 126   /**
 127    * Constructor
 128    * @param application class, stored as reference
 129    */
 130   MotionBlurExampleApp(Application &app)
 131   : mApplication(app),
 132     mActorEffectsEnabled(false),
 133     mCurrentActorAnimation(0),
 134     mCurrentImage(0),
 135     mOrientation( PORTRAIT )
 136   {
 137     // Connect to the Application's Init signal
 138     app.InitSignal().Connect(this, &MotionBlurExampleApp::OnInit);
 139   }
 140
 141   ~MotionBlurExampleApp()
 142   {
 143     // Nothing to do here; everything gets deleted automatically
 144   }
 145
 146   /**
 147    * This method gets called once the main loop of application is up and running
 148    */
 149   void OnInit(Application& app)
 150   {
 151     // The Init signal is received once (only) during the Application lifetime
 152
 153     Stage::GetCurrent().KeyEventSignal().Connect(this, &MotionBlurExampleApp::OnKeyEvent);
 154
 155
 156     // Creates a default view with a default tool bar.
 157     // The view is added to the stage.
 158     mContentLayer = DemoHelper::CreateView( mApplication,
 159                                             mView,
 160                                             mToolBar,
 161                                             BACKGROUND_IMAGE_PATH,
 162                                             TOOLBAR_IMAGE,
 163                                             APPLICATION_TITLE );
 164
 165     //Add an effects icon on the right of the title
 166     mActorEffectsButton = Toolkit::PushButton::New();
 167     mActorEffectsButton.SetProperty( Toolkit::DevelButton::Property::UNSELECTED_BACKGROUND_VISUAL, EFFECTS_OFF_ICON );
 168     mActorEffectsButton.SetProperty( Toolkit::DevelButton::Property::SELECTED_BACKGROUND_VISUAL, EFFECTS_OFF_ICON_SELECTED );
 169     mActorEffectsButton.ClickedSignal().Connect( this, &MotionBlurExampleApp::OnEffectButtonClicked );
 170     mToolBar.AddControl( mActorEffectsButton, DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage, Toolkit::Alignment::HorizontalCenter, DemoHelper::DEFAULT_PLAY_PADDING );
 171
 172     // Creates a mode button.
 173     // Create a effect toggle button. (right of toolbar)
 174     Toolkit::PushButton layoutButton = Toolkit::PushButton::New();
 175     layoutButton.SetProperty( Toolkit::DevelButton::Property::UNSELECTED_BACKGROUND_VISUAL, LAYOUT_IMAGE );
 176     layoutButton.SetProperty( Toolkit::DevelButton::Property::SELECTED_BACKGROUND_VISUAL, LAYOUT_IMAGE_SELECTED );
 177     layoutButton.ClickedSignal().Connect( this, &MotionBlurExampleApp::OnLayoutButtonClicked);
 178     layoutButton.SetLeaveRequired( true );
 179     mToolBar.AddControl( layoutButton, DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage, Toolkit::Alignment::HorizontalRight, DemoHelper::DEFAULT_MODE_SWITCH_PADDING );
 180
 181     // Input
 182     mTapGestureDetector = TapGestureDetector::New();
 183     mTapGestureDetector.Attach( mContentLayer );
 184     mTapGestureDetector.DetectedSignal().Connect( this, &MotionBlurExampleApp::OnTap );
 185
 186     Dali::Window winHandle = app.GetWindow();
 187     winHandle.AddAvailableOrientation( Dali::Window::PORTRAIT );
 188     winHandle.AddAvailableOrientation( Dali::Window::LANDSCAPE );
 189     winHandle.AddAvailableOrientation( Dali::Window::PORTRAIT_INVERSE  );
 190     winHandle.AddAvailableOrientation( Dali::Window::LANDSCAPE_INVERSE );
 191
 192     // set initial orientation
 193     unsigned int degrees = 0;
 194     Rotate( static_cast< DeviceOrientation >( degrees ) );
 195
 196
 197     ///////////////////////////////////////////////////////
 198     //
 199     // Motion blurred actor
 200     //
 201
 202     // Scale down actor to fit on very low resolution screens with space to interact:
 203     Size stageSize = Stage::GetCurrent().GetSize();
 204     mMotionBlurActorSize = Size( std::min( stageSize.x * 0.3f, MOTION_BLUR_ACTOR_WIDTH ), std::min( stageSize.y * 0.3f, MOTION_BLUR_ACTOR_HEIGHT ) );
 205     mMotionBlurActorSize = Size( std::min( mMotionBlurActorSize.x, mMotionBlurActorSize.y ), std::min( mMotionBlurActorSize.x, mMotionBlurActorSize.y ) );
 206
 207     mMotionBlurEffect = CreateMotionBlurEffect();
 208     mMotionBlurImageView = ImageView::New();
 209     SetImageFittedInBox( mMotionBlurImageView, mMotionBlurEffect, MOTION_BLUR_ACTOR_IMAGE1, mMotionBlurActorSize.x, mMotionBlurActorSize.y );
 210     mMotionBlurImageView.SetParentOrigin( ParentOrigin::CENTER );
 211     mMotionBlurImageView.SetSize(mMotionBlurActorSize.x, mMotionBlurActorSize.y);
 212
 213     mContentLayer.Add( mMotionBlurImageView );
 214
 215     // Create shader used for doing motion blur
 216     mMotionBlurEffect = CreateMotionBlurEffect();
 217
 218     // set actor shader to the blur one
 219     Toolkit::SetMotionBlurProperties( mMotionBlurImageView, MOTION_BLUR_NUM_SAMPLES );
 220
 221   }
 222
 223   void Rotate( DeviceOrientation orientation )
 224   {
 225     // Resize the root actor
 226     Vector2 stageSize = Stage::GetCurrent().GetSize();
 227     Vector2 targetSize = stageSize;
 228     if( orientation == LANDSCAPE ||
 229         orientation == LANDSCAPE_INVERSE )
 230     {
 231       targetSize = Vector2( stageSize.y, stageSize.x );
 232     }
 233
 234     if( mOrientation != orientation )
 235     {
 236       mOrientation = orientation;
 237
 238       // check if actor is on stage
 239       if( mView.GetParent() )
 240       {
 241         // has parent so we expect it to be on stage, start animation
 242         mRotateAnimation = Animation::New( ORIENTATION_DURATION );
 243         mRotateAnimation.AnimateTo( Property( mView, Actor::Property::ORIENTATION ), Quaternion( Radian( Degree( -orientation ) ), Vector3::ZAXIS ), AlphaFunction::EASE_OUT );
 244         mRotateAnimation.AnimateTo( Property( mView, Actor::Property::SIZE_WIDTH ), targetSize.width );
 245         mRotateAnimation.AnimateTo( Property( mView, Actor::Property::SIZE_HEIGHT ), targetSize.height );
 246         mRotateAnimation.Play();
 247       }
 248       else
 249       {
 250         // set the rotation to match the orientation
 251         mView.SetOrientation( Degree( -orientation ), Vector3::ZAXIS );
 252         mView.SetSize( targetSize );
 253       }
 254     }
 255     else
 256     {
 257       // for first time just set size
 258       mView.SetSize( targetSize );
 259     }
 260   }
 261
 262
 263   //////////////////////////////////////////////////////////////
 264   //
 265   // Actor Animation
 266   //
 267   //
 268
 269   // move to point on screen that was tapped
 270   void OnTap( Actor actor, const TapGesture& tapGesture )
 271   {
 272     Vector3 destPos;
 273     float originOffsetX, originOffsetY;
 274
 275     // rotate offset (from top left origin to centre) into actor space
 276     Vector2 stageSize = Dali::Stage::GetCurrent().GetSize();
 277     actor.ScreenToLocal(originOffsetX, originOffsetY, stageSize.width * 0.5f, stageSize.height * 0.5f);
 278
 279     // get dest point in local actor space
 280     destPos.x = tapGesture.localPoint.x - originOffsetX;
 281     destPos.y = tapGesture.localPoint.y - originOffsetY;
 282     destPos.z = 0.0f;
 283
 284     float animDuration = 0.5f;
 285     mActorTapMovementAnimation = Animation::New( animDuration );
 286     if ( mMotionBlurImageView )
 287     {
 288       mActorTapMovementAnimation.AnimateTo( Property(mMotionBlurImageView, Actor::Property::POSITION), destPos, AlphaFunction::EASE_IN_OUT_SINE, TimePeriod(animDuration) );
 289     }
 290     mActorTapMovementAnimation.SetEndAction( Animation::Bake );
 291     mActorTapMovementAnimation.Play();
 292
 293
 294     // perform some spinning etc
 295     if(mActorEffectsEnabled)
 296     {
 297       switch(mCurrentActorAnimation)
 298       {
 299         // spin around y
 300         case 0:
 301         {
 302           float animDuration = 1.0f;
 303           mActorAnimation = Animation::New(animDuration);
 304           mActorAnimation.AnimateBy( Property( mMotionBlurImageView, Actor::Property::ORIENTATION ), Quaternion( Radian( Degree(360.0f) ), Vector3::YAXIS ), AlphaFunction::EASE_IN_OUT );
 305           mActorAnimation.SetEndAction( Animation::Bake );
 306           mActorAnimation.Play();
 307         }
 308         break;
 309
 310         // spin around z
 311         case 1:
 312         {
 313           float animDuration = 1.0f;
 314           mActorAnimation = Animation::New(animDuration);
 315           mActorAnimation.AnimateBy( Property( mMotionBlurImageView, Actor::Property::ORIENTATION ), Quaternion( Radian( Degree(360.0f) ), Vector3::ZAXIS ), AlphaFunction::EASE_IN_OUT );
 316           mActorAnimation.SetEndAction( Animation::Bake );
 317           mActorAnimation.Play();
 318         }
 319         break;
 320
 321         // spin around y and z
 322         case 2:
 323         {
 324           float animDuration = 1.0f;
 325           mActorAnimation = Animation::New(animDuration);
 326           mActorAnimation.AnimateBy( Property( mMotionBlurImageView, Actor::Property::ORIENTATION ), Quaternion( Radian( Degree(360.0f) ), Vector3::YAXIS ), AlphaFunction::EASE_IN_OUT );
 327           mActorAnimation.AnimateBy( Property( mMotionBlurImageView, Actor::Property::ORIENTATION ), Quaternion( Radian( Degree(360.0f) ), Vector3::ZAXIS ), AlphaFunction::EASE_IN_OUT );
 328           mActorAnimation.SetEndAction( Animation::Bake );
 329           mActorAnimation.Play();
 330         }
 331         break;
 332
 333         // scale
 334         case 3:
 335         {
 336           float animDuration = 1.0f;
 337           mActorAnimation = Animation::New(animDuration);
 338           mActorAnimation.AnimateBy( Property( mMotionBlurImageView, Actor::Property::SCALE ), Vector3(2.0f, 2.0f, 2.0f), AlphaFunction::BOUNCE, TimePeriod( 0.0f, 1.0f ) );
 339           mActorAnimation.SetEndAction( Animation::Bake );
 340           mActorAnimation.Play();
 341         }
 342         break;
 343
 344         default:
 345           break;
 346       }
 347
 348       mCurrentActorAnimation++;
 349       if(NUM_ACTOR_ANIMATIONS == mCurrentActorAnimation)
 350       {
 351         mCurrentActorAnimation = 0;
 352       }
 353     }
 354   }
 355
 356   void ToggleActorEffects()
 357   {
 358     if(!mActorEffectsEnabled)
 359     {
 360       mActorEffectsEnabled = true;
 361       mActorEffectsButton.SetProperty( Toolkit::DevelButton::Property::UNSELECTED_BACKGROUND_VISUAL, EFFECTS_ON_ICON );
 362       mActorEffectsButton.SetProperty( Toolkit::DevelButton::Property::SELECTED_BACKGROUND_VISUAL, EFFECTS_ON_ICON_SELECTED );
 363     }
 364     else
 365     {
 366       mActorEffectsEnabled = false;
 367       mActorEffectsButton.SetProperty( Toolkit::DevelButton::Property::UNSELECTED_BACKGROUND_VISUAL, EFFECTS_OFF_ICON );
 368       mActorEffectsButton.SetProperty( Toolkit::DevelButton::Property::SELECTED_BACKGROUND_VISUAL, EFFECTS_OFF_ICON_SELECTED );
 369     }
 370   }
 371
 372   //////////////////////////////////////////////////////////////
 373   //
 374   // Input handlers
 375   //
 376   //
 377
 378   bool OnLayoutButtonClicked( Toolkit::Button button )
 379   {
 380     ChangeImage();
 381     return true;
 382   }
 383
 384   bool OnEffectButtonClicked( Toolkit::Button button )
 385   {
 386     ToggleActorEffects();
 387     return true;
 388   }
 389
 390   /**
 391    * Main key event handler
 392    */
 393   void OnKeyEvent(const KeyEvent& event)
 394   {
 395     if(event.state == KeyEvent::Down)
 396     {
 397       if( IsKey( event, Dali::DALI_KEY_ESCAPE) || IsKey( event, Dali::DALI_KEY_BACK) )
 398       {
 399         mApplication.Quit();
 400       }
 401     }
 402   }
 403
 404   //////////////////////////////////////////////////////////////
 405   //
 406   // Misc
 407   //
 408   //
 409
 410
 411   void ChangeImage()
 412   {
 413     mCurrentImage++;
 414     if(MOTION_BLUR_NUM_ACTOR_IMAGES == mCurrentImage)
 415     {
 416       mCurrentImage = 0;
 417     }
 418     SetImageFittedInBox( mMotionBlurImageView, mMotionBlurEffect, MOTION_BLUR_ACTOR_IMAGES[mCurrentImage], mMotionBlurActorSize.x, mMotionBlurActorSize.y );
 419
 420   }
 421
 422
 423 private:
 424   Application&               mApplication;            ///< Application instance
 425   Toolkit::Control           mView;
 426   Toolkit::ToolBar           mToolBar;
 427
 428   Layer                      mContentLayer;           ///< Content layer (contains actor for this blur demo)
 429
 430   PushButton                 mActorEffectsButton;     ///< The actor effects toggling Button.
 431
 432   // Motion blur
 433   Property::Map mMotionBlurEffect;
 434   ImageView mMotionBlurImageView;
 435   Size mMotionBlurActorSize;
 436
 437   // animate actor to position where user taps screen
 438   Animation mActorTapMovementAnimation;
 439
 440   // show different animations to demonstrate blur effect working on an object only movement basis
 441   bool mActorEffectsEnabled;
 442   Animation mActorAnimation;
 443   int mCurrentActorAnimation;
 444
 445   // offer a selection of images that user can cycle between
 446   int mCurrentImage;
 447
 448   TapGestureDetector mTapGestureDetector;
 449
 450   DeviceOrientation mOrientation;               ///< Current Device orientation
 451   Animation mRotateAnimation;                   ///< Animation for rotating between landscape and portrait.
 452 };
 453
 454 void RunTest(Application& app)
 455 {
 456   MotionBlurExampleApp test(app);
 457
 458   app.MainLoop();
 459 }
 460
 461 // Entry point for Linux & Tizen applications
 462 //
 463 int DALI_EXPORT_API main(int argc, char **argv)
 464 {
 465   Application app = Application::New(&argc, &argv, DEMO_THEME_PATH);
 466
 467   RunTest(app);
 468
 469   return 0;
 470 }