L'interface de l'application de testMaintenant que nous avons fait le tour des fonctions d'easing nécessaires, il est temps de proposer une application de test : nous allons enfin voir ces fonctions à l’œuvre ! L'objectif de l'application sera simple : des boutons feront l'aller et retour d'une zone de déplacement selon la fonction d'easing qui leur sera affectée.
Pour un aperçu efficace des courbes d'easing, nous allons créer une application sans prétention dont l'interface ressemblera à ceci :
Nous reconnaissons :
- trois zones délimitées par des panneaux TPanel (un pour les contrôles de types Out ou In, un pour les contrôles de types InOut ou OutIn et un pour un composant TTrackbar afin d'ajuster la vitesse de l'animation ;
- une séparation ajustable TSplitter entre les deux panneaux supérieurs afin de moduler les distances à parcourir par les contrôles animés (elle est à deviner
) ; - des boutons TButton qui serviront d'objets animés (21 dans chaque panneau : 1 pour un repère linéaire et 10 pour chaque type).
Voici le fichier LFM correspondant :
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 | object MainForm: TMainForm
Left = 304
Height = 623
Top = 197
Width = 953
Caption = 'Test des interpolations - © G. Vasseur 2019'
ClientHeight = 623
ClientWidth = 953
OnCreate = FormCreate
LCLVersion = '1.8.2.0'
object pnlMain: TPanel
Left = 10
Height = 553
Top = 10
Width = 933
Align = alClient
BorderSpacing.Around = 10
ClientHeight = 553
ClientWidth = 933
TabOrder = 0
OnClick = btnLinear2Click
object pnlLeft: TPanel
Left = 1
Height = 551
Top = 1
Width = 474
Align = alLeft
ClientHeight = 551
ClientWidth = 474
TabOrder = 0
OnClick = btnLinear2Click
object btnEaseOutBounce: TButton
Left = 0
Height = 25
Top = 256
Width = 120
Caption = 'EaseOutBounce'
OnClick = btnEaseOutQuadClick
TabOrder = 0
end
object btnEaseOutBack: TButton
Left = 0
Height = 25
Top = 232
Width = 120
Caption = 'EaseOutBack'
OnClick = btnEaseOutQuadClick
TabOrder = 1
end
object btnEaseOutElastic: TButton
Left = 0
Height = 25
Top = 208
Width = 120
Caption = 'EaseOutElastic'
OnClick = btnEaseOutQuadClick
TabOrder = 2
end
object btnEaseOutCirc: TButton
Left = 0
Height = 25
Top = 184
Width = 120
Caption = 'EaseOutCirc'
OnClick = btnEaseOutQuadClick
TabOrder = 3
end
object btnEaseOutSine: TButton
Left = 0
Height = 25
Top = 136
Width = 120
Caption = 'EaseOutSine'
OnClick = btnEaseOutQuadClick
TabOrder = 4
end
object btnEaseOutQuint: TButton
Left = 0
Height = 25
Top = 112
Width = 120
Caption = 'EaseOutQuint'
OnClick = btnEaseOutQuadClick
TabOrder = 5
end
object btnEaseOutQuad: TButton
Left = 0
Height = 25
Top = 40
Width = 120
Caption = 'EaseOutQuad'
OnClick = btnEaseOutQuadClick
TabOrder = 6
end
object btnEaseOutCubic: TButton
Left = 0
Height = 25
Top = 64
Width = 120
Caption = 'EaseOutCubic'
OnClick = btnEaseOutQuadClick
TabOrder = 7
end
object btnEaseOutQuart: TButton
Left = 0
Height = 25
Top = 88
Width = 120
Caption = 'EaseOutQuart'
OnClick = btnEaseOutQuadClick
TabOrder = 8
end
object btnEaseOutExpo: TButton
Left = 0
Height = 25
Top = 160
Width = 120
Caption = 'EaseOutExpo'
OnClick = btnEaseOutQuadClick
TabOrder = 9
end
object btnEaseInQuad: TButton
Left = 1
Height = 25
Top = 296
Width = 120
Caption = 'EaseInQuad'
OnClick = btnEaseInQuadClick
TabOrder = 10
end
object btnEaseInCubic: TButton
Left = 1
Height = 25
Top = 320
Width = 120
Caption = 'EaseInCubic'
OnClick = btnEaseInQuadClick
TabOrder = 11
end
object btnEaseInQuart: TButton
Left = 1
Height = 25
Top = 344
Width = 120
Caption = 'EaseInQuart'
OnClick = btnEaseInQuadClick
TabOrder = 12
end
object btnEaseInQuint: TButton
Left = 1
Height = 25
Top = 368
Width = 120
Caption = 'EaseInQuint'
OnClick = btnEaseInQuadClick
TabOrder = 13
end
object btnEaseInSine: TButton
Left = 1
Height = 25
Top = 392
Width = 120
Caption = 'EaseInSine'
OnClick = btnEaseInQuadClick
TabOrder = 14
end
object btnEaseInExpo: TButton
Left = 1
Height = 25
Top = 416
Width = 120
Caption = 'EaseInExpo'
OnClick = btnEaseInQuadClick
TabOrder = 15
end
object btnEaseInCirc: TButton
Left = 1
Height = 25
Top = 440
Width = 120
Caption = 'EaseInCirc'
OnClick = btnEaseInQuadClick
TabOrder = 16
end
object btnEaseInElastic: TButton
Left = 1
Height = 25
Top = 464
Width = 120
Caption = 'EaseInElastic'
OnClick = btnEaseInQuadClick
TabOrder = 17
end
object btnEaseInBack: TButton
Left = 1
Height = 25
Top = 488
Width = 120
Caption = 'EaseInBack'
OnClick = btnEaseInQuadClick
TabOrder = 18
end
object btnEaseInBounce: TButton
Left = 1
Height = 25
Top = 512
Width = 120
Caption = 'EaseInBounce'
OnClick = btnEaseInQuadClick
TabOrder = 19
end
object btnLinear: TButton
Left = 0
Height = 25
Top = 8
Width = 120
Caption = 'Linear'
Font.Style = [fsBold]
OnClick = btnLinear2Click
ParentFont = False
TabOrder = 20
end
end
object pnlRight: TPanel
Left = 480
Height = 551
Top = 1
Width = 452
Align = alClient
ClientHeight = 551
ClientWidth = 452
TabOrder = 1
OnClick = btnLinear2Click
object btnLinear2: TButton
Left = 0
Height = 25
Top = 8
Width = 120
Caption = 'Linear'
Font.Style = [fsBold]
OnClick = btnLinear2Click
ParentFont = False
TabOrder = 0
end
object btnEaseInOutCubic: TButton
Left = 0
Height = 25
Top = 320
Width = 120
Caption = 'EaseInOutCubic'
OnClick = btnEaseInOutQuadClick
TabOrder = 1
end
object btnEaseInOutQuart: TButton
Left = 0
Height = 25
Top = 344
Width = 120
Caption = 'EaseInOutQuart'
OnClick = btnEaseInOutQuadClick
TabOrder = 2
end
object btnEaseOutInQuart: TButton
Left = 0
Height = 25
Top = 88
Width = 120
Caption = 'EaseOutInQuart'
OnClick = btnEaseOutInQuadClick
TabOrder = 3
end
object btnEaseOutInCubic: TButton
Left = 0
Height = 25
Top = 64
Width = 120
Caption = 'EaseOutInCubic'
OnClick = btnEaseOutInQuadClick
TabOrder = 4
end
object btnEaseOutInQuint: TButton
Left = 0
Height = 25
Top = 112
Width = 120
Caption = 'EaseOutInQuint'
OnClick = btnEaseOutInQuadClick
TabOrder = 5
end
object btnEaseInOutQuint: TButton
Left = 0
Height = 25
Top = 368
Width = 120
Caption = 'EaseInOutQuint'
OnClick = btnEaseInOutQuadClick
TabOrder = 6
end
object btnEaseOutInSine: TButton
Left = 0
Height = 25
Top = 136
Width = 120
Caption = 'EaseOutInSine'
OnClick = btnEaseOutInQuadClick
TabOrder = 7
end
object btnEaseInOutQuad: TButton
Left = 0
Height = 25
Top = 296
Width = 120
Caption = 'EaseInOutQuad'
OnClick = btnEaseInOutQuadClick
TabOrder = 8
end
object btnEaseOutInQuad: TButton
Left = 0
Height = 25
Top = 40
Width = 120
Caption = 'EaseOutInQuad'
OnClick = btnEaseOutInQuadClick
TabOrder = 9
end
object btnEaseInOutSine: TButton
Left = 0
Height = 25
Top = 392
Width = 120
Caption = 'EaseInOutSine'
OnClick = btnEaseInOutQuadClick
TabOrder = 10
end
object btnEaseOutInCirc: TButton
Left = 0
Height = 25
Top = 184
Width = 120
Caption = 'EaseOutInCirc'
OnClick = btnEaseOutInQuadClick
TabOrder = 11
end
object btnEaseOutInElastic: TButton
Left = 0
Height = 25
Top = 208
Width = 120
Caption = 'EaseOutInElastic'
OnClick = btnEaseOutInQuadClick
TabOrder = 12
end
object btnEaseOutInBack: TButton
Left = 0
Height = 25
Top = 232
Width = 120
Caption = 'EaseOutInBack'
OnClick = btnEaseOutInQuadClick
TabOrder = 13
end
object btnEaseOutInBounce: TButton
Left = 0
Height = 25
Top = 256
Width = 120
Caption = 'EaseOutInBounce'
OnClick = btnEaseOutInQuadClick
TabOrder = 14
end
object btnEaseOutInExpo: TButton
Left = 0
Height = 25
Top = 160
Width = 120
Caption = 'EaseOutInExpo'
OnClick = btnEaseOutInQuadClick
TabOrder = 15
end
object btnEaseInOutExpo: TButton
Left = 0
Height = 25
Top = 416
Width = 120
Caption = 'EaseInOutExpo'
OnClick = btnEaseInOutQuadClick
TabOrder = 16
end
object btnEaseInOutCirc: TButton
Left = 0
Height = 25
Top = 440
Width = 120
Caption = 'EaseInOutCirc'
OnClick = btnEaseInOutQuadClick
TabOrder = 17
end
object btnEaseInOutElastic: TButton
Left = 0
Height = 25
Top = 464
Width = 120
Caption = 'EaseInOutElastic'
OnClick = btnEaseInOutQuadClick
TabOrder = 18
end
object btnEaseInOutBack: TButton
Left = 0
Height = 25
Top = 488
Width = 120
Caption = 'EaseInOutBack'
OnClick = btnEaseInOutQuadClick
TabOrder = 19
end
object btnEaseInOutBounce: TButton
Left = 0
Height = 25
Top = 512
Width = 120
Caption = 'EaseInOutBounce'
OnClick = btnEaseInOutQuadClick
TabOrder = 20
end
end
object Splitter1: TSplitter
Left = 475
Height = 551
Top = 1
Width = 5
end
end
object pnlBottom: TPanel
Left = 0
Height = 50
Top = 573
Width = 953
Align = alBottom
BorderSpacing.InnerBorder = 10
ClientHeight = 50
ClientWidth = 953
TabOrder = 1
object tbarWait: TTrackBar
Left = 11
Height = 28
Top = 11
Width = 301
Max = 100
OnChange = tbarWaitChange
Position = 0
Align = alLeft
BorderSpacing.Around = 10
TabOrder = 0
end
end
end |
Comme annoncé, vous noterez la présence d'un TTrackbar qui déterminera la vitesse (de manière très grossière pour le moment) d'exécution des interpolations, ainsi que d'un TSplitter dont la fonction sera de modifier à volonté la largeur des zones de déplacement afin de voir comment se comportent les fonctions sur des trajets plus ou moins longs.
Aucune action n'est nécessaire pour le TSplitter qui saura dimensionner les panneaux suivant le choix de l'utilisateur final.Le code associé à l'application
Le code reprend celui décrit dans les billets précédents, mais il ajoute la gestion des clics sur les boutons. Sachant que les coordonnées des boutons sont des entiers, on a simplement introduit une variante à valeur entière des différentes interpolations qui utilisaient des nombres flottants Single.
Une fois toutes les fonctions solidement définies, le reste de l'application ne met en œuvre que des techniques habituelles.
Nous déclarons des constantes pour la valeur de fin à atteindre et la durée par défaut ainsi qu'une énumération afin de différencier les interpolations :
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | const C_DefaultDuration = 100; C_End = 200; type TInterpolation = (intLinear, intEaseInQuad, intEaseOutQuad, intEaseInOutQuad, intEaseOutInQuad, intEaseInCubic, intEaseOutCubic, intEaseInOutCubic, intEaseOutInCubic, intEaseInQuart, intEaseOutQuart, intEaseInOutQuart, intEaseOutInQuart, intEaseInQuint, intEaseOutQuint, intEaseInOutQuint, intEaseOutInQuint, intEaseInSine, intEaseOutSine, intEaseInOutSine, intEaseOutInSine, intEaseInExpo, intEaseOutExpo, intEaseInOutExpo, intEaseOutInExpo, intEaseInCirc, intEaseOutCirc, intEaseInOutCirc, intEaseOutInCirc, intEaseInElastic, intEaseOutElastic, intEaseInOutElastic, intEaseOutInElastic, intEaseInBack, intEaseOutBack, intEaseInOutBack, intEaseOutInBack, intEaseInBounce, intEaseOutBounce, intEaseInOutBounce, intEaseOutInBounce ); |
Les clics ont été modulés ainsi : un clic sur un des boutons de référence (btnLinear et btnLinear2), c'est-à-dire suivant un parcours linéaire, provoque le déplacement des tous les boutons. En revanche, un clic sur un autre bouton provoque seulement le déplacement de son groupe (Out, In, OutIn ou InOut).
Voici le code associé aux premiers boutons dits de référence :
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | procedure TMainForm.btnLinear2Click(Sender: TObject); // *** lancement des animations *** var Li, LWidth, LWidth2: Integer; LBack: Boolean; begin tbarWait.Enabled := False; LWidth := pnlLeft.Width - btnLinear2.Width; LWidth2 := pnlRight.Width - btnLinear.Width; for LBack := False to True do for Li := 1 to fDuration do begin btnLinear.Left := ComputeInterpolationInt(0, LWidth, Li, intLinear, LBack); btnLinear2.Left := ComputeInterpolationInt(0, LWidth2, Li, intLinear, LBack); btnEaseInQuad.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuad, LBack); btnEaseOutQuad.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutQuad, LBack); btnEaseInOutQuad.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutQuad, LBack); btnEaseOutInQuad.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInQuad, LBack); btnEaseInCubic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInCubic, LBack); btnEaseOutCubic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutCubic, LBack); btnEaseInOutCubic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutCubic, LBack); btnEaseOutInCubic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInCubic, LBack); btnEaseInQuart.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuart, LBack); btnEaseOutQuart.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutQuart, LBack); btnEaseInOutQuart.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutQuart, LBack); btnEaseOutInQuart.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInQuart, LBack); btnEaseInQuint.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuint, LBack); btnEaseOutQuint.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutQuint, LBack); btnEaseInOutQuint.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutQuint, LBack); btnEaseOutInQuint.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInQuint, LBack); btnEaseInSine.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInSine, LBack); btnEaseOutSine.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutSine, LBack); btnEaseInOutSine.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutSine, LBack); btnEaseOutInSine.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInSine, LBack); btnEaseInExpo.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInExpo, LBack); btnEaseOutExpo.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutExpo, LBack); btnEaseInOutExpo.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutExpo, LBack); btnEaseOutInExpo.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInExpo, LBack); btnEaseInCirc.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInCirc, LBack); btnEaseOutCirc.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutCirc, LBack); btnEaseInOutCirc.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutCirc, LBack); btnEaseOutInCirc.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInCirc, LBack); btnEaseInElastic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInElastic, LBack); btnEaseOutElastic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutElastic, LBack); btnEaseInOutElastic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutElastic, LBack); btnEaseOutInElastic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInElastic, LBack); btnEaseInBack.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInBack, LBack); btnEaseOutBack.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutBack, LBack); btnEaseInOutBack.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutBack, LBack); btnEaseOutInBack.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInBack, LBack); btnEaseInBounce.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInBounce, LBack); btnEaseOutBounce.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutBounce, LBack); btnEaseInOutBounce.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutBounce, LBack); btnEaseOutInBounce.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInBounce, LBack); sleep(10); Repaint; Application.ProcessMessages; end; tbarWait.Enabled := True; end; |
Dans deux boucles imbriquées qui prennent en compte le sens du déplacement (booléen Back) et la portion de durée effectuée (Li pour fDuration), les boutons sont tous déplacés grâce à la modification de leur propriété Left.
C'est le résultat entier de la fonction ComputeInterpolationInt qui est affecté à cette propriété Left de chaque bouton. La fonction calcule la valeur à retourner en fonction du point de départ, du point d'arrivée, du type d'interpolation et du sens de déplacement.
Après le déplacement, un temps d'arrêt est donné via sleep pour éviter une exécution trop rapide, la zone d'affichage est repeinte avec Repaint pour prendre en compte les changements et un appel est fait à Application.ProcessMessages pour répondre aux éventuels messages non traités (comme l'arrêt de l'application par exemple).
Vous remarquerez que le TTrackBar est désactivé pendant les mouvements afin de garantir l'homogénéité des données durant le processus d'interpolation.
De la même manière, voici le code correspondant aux clics sur les boutons de type In :
| Code delphi : | Sélectionner tout |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | procedure TMainForm.btnEaseInQuadClick(Sender: TObject); // *** fonctions IN *** var Li, LWidth: Integer; LBack: Boolean; begin tbarWait.Enabled := False; LWidth := pnlLeft.Width - btnLinear2.Width; for LBack := False to True do for Li := 1 to fDuration do begin btnLinear.Left := ComputeInterpolationInt(0, LWidth, Li, intLinear, LBack); btnEaseInQuad.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuad, LBack); btnEaseInCubic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInCubic, LBack); btnEaseInQuart.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuart, LBack); btnEaseInQuint.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuint, LBack); btnEaseInSine.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInSine, LBack); btnEaseInExpo.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInExpo, LBack); btnEaseInCirc.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInCirc, LBack); btnEaseInElastic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInElastic, LBack); btnEaseInBack.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInBack, LBack); btnEaseInBounce.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInBounce, LBack); sleep(10); pnlLeft.Repaint; Application.ProcessMessages; end; tbarWait.Enabled := True; end; |
Le code est similaire au précédent sinon que seuls sont affectés les boutons visés et que la méthode Repaint n'affecte que le panneau modifié. Nous renvoyons au code fourni à la fin de ce billet pour les autres types de fonction : il est évidemment construit sur le même modèle.
Reste à gérer la durée qui est une propriété nommée Duration qui elle-même fait référence à un champ privé fDuration à travers un setter :
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property Duration: Cardinal read fDuration write SetDuration default C_DefaultDuration;
Le setter peut sembler superflu, mais il prépare une meilleure gestion de la durée qui n'est pour le moment qu'une suite linéaire de valeurs entières.
Les méthodes associées sont simples et en relation avec le composant TTrackbar qui fournit la valeur brute de la durée :
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1 2 3 4 5 6 7 8 9 10 11 12 13 | procedure TMainForm.tbarWaitChange(Sender: TObject); // *** changement de la vitesse *** begin Duration := tbarWait.Position; end; procedure TMainForm.SetDuration(AValue: Cardinal); // *** détermination de la durée d'interpolation *** begin if fDuration = C_End - AValue then Exit; fDuration := C_End - AValue; end; |
Il ne reste que la création de la fiche à compléter pour obtenir une application fonctionnelle :
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1 2 3 4 5 6 7 | procedure TMainForm.FormCreate(Sender: TObject); // *** création de la fiche *** begin Duration := C_DefaultDuration; tbarWait.Max := C_End; tbarWait.Position := fDuration; end; |
Nous devons en effet renseigner la valeur de la durée par défaut et ajuster correctement les propriétés du composant TTrackbar.
La méthode ComputeInterpolationInt renvoie à une méthode ComputeInterpolation calquée sur les fonctions que nous avions déjà produites :
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1 2 3 4 5 6 | function TMainForm.ComputeInterpolationInt(AStart, AEnd: Integer; AStep: Integer; AInter: TInterpolation; ABack: Boolean): Integer; // *** interpolation entière *** begin Result := Round(ComputeInterpolation(AStart, AEnd, AStep, AInter, ABack)); end; |
Voici le code de cette méthode ComputeInterpolation :
| Code delphi : | Sélectionner tout |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | function TMainForm.ComputeInterpolation(AStart, AEnd, AStep: Single; AInter: TInterpolation; ABack: Boolean): Single; // *** calcul des interpolations *** begin case AInter of // linéaire intLinear: Result := EaseNone(AStart, AEnd, AStep); // quadratique intEaseInQuad: Result := EaseInQuad(AStart, AEnd, AStep); intEaseOutQuad: Result := EaseOutQuad(AStart, AEnd, AStep); intEaseInOutQuad: Result := EaseInOutQuad(AStart, AEnd, AStep); intEaseOutInQuad: Result := EaseOutInQuad(AStart, AEnd, AStep); // cubique intEaseInCubic: Result := EaseInCubic(AStart, AEnd, AStep); intEaseOutCubic: Result := EaseOutCubic(AStart, AEnd, AStep); intEaseInOutCubic: Result := EaseInOutCubic(AStart, AEnd, AStep); intEaseOutInCubic: Result := EaseOutInCubic(AStart, AEnd, AStep); // quartique intEaseInQuart: Result := EaseInQuart(AStart, AEnd, AStep); intEaseOutQuart: Result := EaseOutQuart(AStart, AEnd, AStep); intEaseInOutQuart: Result := EaseInOutQuart(AStart, AEnd, AStep); intEaseOutInQuart: Result := EaseOutInQuart(AStart, AEnd, AStep); // quintique intEaseInQuint: Result := EaseInQuint(AStart, AEnd, AStep); intEaseOutQuint: Result := EaseOutQuint(AStart, AEnd, AStep); intEaseInOutQuint: Result := EaseInOutQuint(AStart, AEnd, AStep); intEaseOutInQuint: Result := EaseOutInQuint(AStart, AEnd, AStep); // sinus intEaseInSine: Result := EaseInSine(AStart, AEnd, AStep); intEaseOutSine: Result := EaseOutSine(AStart, AEnd, AStep); intEaseInOutSine: Result := EaseInOutSine(AStart, AEnd, AStep); intEaseOutInSine: Result := EaseOutInSine(AStart, AEnd, AStep); // exponentielle intEaseInExpo: Result := EaseInExpo(AStart, AEnd, AStep); intEaseOutExpo: Result := EaseOutExpo(AStart, AEnd, AStep); intEaseInOutExpo: Result := EaseInOutExpo(AStart, AEnd, AStep); intEaseOutInExpo: Result := EaseOutInExpo(AStart, AEnd, AStep); // cercle intEaseInCirc: Result := EaseInCirc(AStart, AEnd, AStep); intEaseOutCirc: Result := EaseOutCirc(AStart, AEnd, AStep); intEaseInOutCirc: Result := EaseInOutCirc(AStart, AEnd, AStep); intEaseOutInCirc: Result := EaseOutInCirc(AStart, AEnd, AStep); // élastique intEaseInElastic: Result := EaseInElastic(AStart, AEnd, AStep); intEaseOutElastic: Result := EaseOutElastic(AStart, AEnd, AStep); intEaseInOutElastic: Result := EaseInOutElastic(AStart, AEnd, AStep); intEaseOutInElastic: Result := EaseOutInElastic(AStart, AEnd, AStep); // retour intEaseInBack: Result := EaseInBack(AStart, AEnd, AStep); intEaseOutBack: Result := EaseOutBack(AStart, AEnd, AStep); intEaseInOutBack: Result := EaseInOutBack(AStart, AEnd, AStep); intEaseOutInBack: Result := EaseOutInBack(AStart, AEnd, AStep); // rebond intEaseInBounce: Result := EaseInBounce(AStart, AEnd, AStep); intEaseOutBounce: Result := EaseOutBounce(AStart, AEnd, AStep); intEaseInOutBounce: Result := EaseInOutBounce(AStart, AEnd, AStep); intEaseOutInBounce: Result := EaseOutInBounce(AStart, AEnd, AStep); end; if ABack then Result := AEnd - Result; end; |
Comme attendu, elle fonctionne à la manière d'une gare de triage selon la fonction d'easing voulue.
Finalement, l'unité complète donnera :
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Vasseur 2019 @ @ Contact : gillesvasseur58@gmail.com @ @ Date/Heure : 05/02/2019 12:20:05 @ @ Version : 1.0.0.14 @ @ @ @¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤} { Transitions entre deux images - interpolations Copyright (C) 05/02/2019 12:20:05 G. Vasseur 2018 gillesvasseur58@gmail.com This source 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 code 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. A copy of the GNU General Public License is available on the World Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also obtain it by writing to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. } unit main; {$mode objfpc}{$H+} interface uses Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, ExtCtrls, StdCtrls, ComCtrls; const C_DefaultDuration = 100; C_End = 200; type TInterpolation = (intLinear, intEaseInQuad, intEaseOutQuad, intEaseInOutQuad, intEaseOutInQuad, intEaseInCubic, intEaseOutCubic, intEaseInOutCubic, intEaseOutInCubic, intEaseInQuart, intEaseOutQuart, intEaseInOutQuart, intEaseOutInQuart, intEaseInQuint, intEaseOutQuint, intEaseInOutQuint, intEaseOutInQuint, intEaseInSine, intEaseOutSine, intEaseInOutSine, intEaseOutInSine, intEaseInExpo, intEaseOutExpo, intEaseInOutExpo, intEaseOutInExpo, intEaseInCirc, intEaseOutCirc, intEaseInOutCirc, intEaseOutInCirc, intEaseInElastic, intEaseOutElastic, intEaseInOutElastic, intEaseOutInElastic, intEaseInBack, intEaseOutBack, intEaseInOutBack, intEaseOutInBack, intEaseInBounce, intEaseOutBounce, intEaseInOutBounce, intEaseOutInBounce ); { TMainForm } TMainForm = class(TForm) btnEaseOutInQuart: TButton; btnLinear2: TButton; btnEaseInQuad: TButton; btnEaseOutCubic: TButton; btnEaseInCubic: TButton; btnEaseOutQuad: TButton; btnEaseInOutCubic: TButton; btnEaseInOutQuart: TButton; btnEaseOutInCubic: TButton; btnEaseInQuart: TButton; btnEaseOutQuart: TButton; btnEaseInQuint: TButton; btnEaseOutQuint: TButton; btnEaseOutInQuint: TButton; btnEaseInOutQuint: TButton; btnEaseInSine: TButton; btnEaseOutSine: TButton; btnEaseInOutSine: TButton; btnEaseOutInSine: TButton; btnEaseInOutQuad: TButton; btnEaseOutInQuad: TButton; btnEaseInExpo: TButton; btnEaseInCirc: TButton; btnEaseInElastic: TButton; btnEaseInBack: TButton; btnEaseInBounce: TButton; btnEaseOutCirc: TButton; btnEaseOutElastic: TButton; btnEaseOutBack: TButton; btnEaseOutBounce: TButton; btnEaseOutExpo: TButton; btnLinear: TButton; btnEaseOutInCirc: TButton; btnEaseOutInElastic: TButton; btnEaseOutInBack: TButton; btnEaseOutInBounce: TButton; btnEaseInOutExpo: TButton; btnEaseInOutCirc: TButton; btnEaseInOutElastic: TButton; btnEaseInOutBack: TButton; btnEaseOutInExpo: TButton; btnEaseInOutBounce: TButton; pnlRight: TPanel; pnlLeft: TPanel; pnlBottom: TPanel; pnlMain: TPanel; Splitter1: TSplitter; tbarWait: TTrackBar; procedure btnEaseInOutQuadClick(Sender: TObject); procedure btnEaseInQuadClick(Sender: TObject); procedure btnEaseOutInQuadClick(Sender: TObject); procedure btnEaseOutQuadClick(Sender: TObject); procedure btnLinear2Click(Sender: TObject); procedure FormCreate(Sender: TObject); procedure tbarWaitChange(Sender: TObject); private fDuration: Cardinal; procedure SetDuration(AValue: Cardinal); function InPower(AStart, AChange, AStep: Single; APower: Integer): Single; function OutPower(AStart, AChange, AStep: Single; APower: Integer): Single; function InOutPower(AStart, AChange, AStep: Single; APower: Integer): Single; protected function EaseNone(AStart, AChange, AStep: Single): Single; function EaseInQuad(AStart, AChange, AStep: Single): Single; function EaseOutQuad(AStart, AChange, AStep: Single): Single; function EaseInOutQuad(AStart, AChange, AStep: Single): Single; function EaseOutInQuad(AStart, AChange, AStep: Single): Single; function EaseInCubic(AStart, AChange, AStep: Single): Single; function EaseOutCubic(AStart, AChange, AStep: Single): Single; function EaseInOutCubic(AStart, AChange, AStep: Single): Single; function EaseOutInCubic(AStart, AChange, AStep: Single): Single; function EaseInQuart(AStart, AChange, AStep: Single): Single; function EaseOutQuart(AStart, AChange, AStep: Single): Single; function EaseInOutQuart(AStart, AChange, AStep: Single): Single; function EaseOutInQuart(AStart, AChange, AStep: Single): Single; function EaseInQuint(AStart, AChange, AStep: Single): Single; function EaseOutQuint(AStart, AChange, AStep: Single): Single; function EaseInOutQuint(AStart, AChange, AStep: Single): Single; function EaseOutInQuint(AStart, AChange, AStep: Single): Single; function EaseInSine(AStart, AChange, AStep: Single): Single; function EaseOutSine(AStart, AChange, AStep: Single): Single; function EaseInOutSine(AStart, AChange, AStep: Single): Single; function EaseOutInSine(AStart, AChange, AStep: Single): Single; function EaseInExpo(AStart, AChange, AStep: Single): Single; function EaseOutExpo(AStart, AChange, AStep: Single): Single; function EaseInOutExpo(AStart, AChange, AStep: Single): Single; function EaseOutInExpo(AStart, AChange, AStep: Single): Single; function EaseInCirc(AStart, AChange, AStep: Single): Single; function EaseOutCirc(AStart, AChange, AStep: Single): Single; function EaseInOutCirc(AStart, AChange, AStep: Single): Single; function EaseOutInCirc(AStart, AChange, AStep: Single): Single; function EaseInElastic(AStart, AChange, AStep: Single): Single; function EaseOutElastic(AStart, AChange, AStep: Single): Single; function EaseInOutElastic(AStart, AChange, AStep: Single): Single; function EaseOutInElastic(AStart, AChange, AStep: Single): Single; function EaseInBack(AStart, AChange, AStep: Single): Single; function EaseOutBack(AStart, AChange, AStep: Single): Single; function EaseInOutBack(AStart, AChange, AStep: Single): Single; function EaseOutInBack(AStart, AChange, AStep: Single): Single; function EaseInOutBounce(AStart, AChange, AStep: Single): Single; function EaseOutInBounce(AStart, AChange, AStep: Single): Single; function EaseInBounce(AStart, AChange, AStep: Single): Single; function EaseOutBounce(AStart, AChange, AStep: Single): Single; public property Duration: Cardinal read fDuration write SetDuration default C_DefaultDuration; function ComputeInterpolation(AStart, AEnd, AStep: Single; AInter: TInterpolation; ABack: Boolean = False): Single; function ComputeInterpolationInt(AStart, AEnd: Integer; AStep: Integer; AInter: TInterpolation; ABack: Boolean = False): Integer; end; var MainForm: TMainForm; implementation uses math; {$R *.lfm} { TMainForm } procedure TMainForm.btnLinear2Click(Sender: TObject); // *** lancement des animations *** var Li, LWidth, LWidth2: Integer; LBack: Boolean; begin tbarWait.Enabled := False; LWidth := pnlLeft.Width - btnLinear2.Width; LWidth2 := pnlRight.Width - btnLinear.Width; for LBack := False to True do for Li := 1 to fDuration do begin btnLinear.Left := ComputeInterpolationInt(0, LWidth, Li, intLinear, LBack); btnLinear2.Left := ComputeInterpolationInt(0, LWidth2, Li, intLinear, LBack); btnEaseInQuad.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuad, LBack); btnEaseOutQuad.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutQuad, LBack); btnEaseInOutQuad.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutQuad, LBack); btnEaseOutInQuad.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInQuad, LBack); btnEaseInCubic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInCubic, LBack); btnEaseOutCubic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutCubic, LBack); btnEaseInOutCubic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutCubic, LBack); btnEaseOutInCubic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInCubic, LBack); btnEaseInQuart.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuart, LBack); btnEaseOutQuart.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutQuart, LBack); btnEaseInOutQuart.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutQuart, LBack); btnEaseOutInQuart.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInQuart, LBack); btnEaseInQuint.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuint, LBack); btnEaseOutQuint.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutQuint, LBack); btnEaseInOutQuint.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutQuint, LBack); btnEaseOutInQuint.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInQuint, LBack); btnEaseInSine.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInSine, LBack); btnEaseOutSine.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutSine, LBack); btnEaseInOutSine.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutSine, LBack); btnEaseOutInSine.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInSine, LBack); btnEaseInExpo.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInExpo, LBack); btnEaseOutExpo.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutExpo, LBack); btnEaseInOutExpo.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutExpo, LBack); btnEaseOutInExpo.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInExpo, LBack); btnEaseInCirc.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInCirc, LBack); btnEaseOutCirc.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutCirc, LBack); btnEaseInOutCirc.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutCirc, LBack); btnEaseOutInCirc.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInCirc, LBack); btnEaseInElastic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInElastic, LBack); btnEaseOutElastic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutElastic, LBack); btnEaseInOutElastic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutElastic, LBack); btnEaseOutInElastic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInElastic, LBack); btnEaseInBack.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInBack, LBack); btnEaseOutBack.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutBack, LBack); btnEaseInOutBack.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutBack, LBack); btnEaseOutInBack.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInBack, LBack); btnEaseInBounce.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInBounce, LBack); btnEaseOutBounce.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutBounce, LBack); btnEaseInOutBounce.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutBounce, LBack); btnEaseOutInBounce.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInBounce, LBack); sleep(10); Repaint; Application.ProcessMessages; end; tbarWait.Enabled := True; end; procedure TMainForm.btnEaseInQuadClick(Sender: TObject); // *** fonctions IN *** var Li, LWidth: Integer; LBack: Boolean; begin tbarWait.Enabled := False; LWidth := pnlLeft.Width - btnLinear2.Width; for LBack := False to True do for Li := 1 to fDuration do begin btnLinear.Left := ComputeInterpolationInt(0, LWidth, Li, intLinear, LBack); btnEaseInQuad.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuad, LBack); btnEaseInCubic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInCubic, LBack); btnEaseInQuart.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuart, LBack); btnEaseInQuint.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInQuint, LBack); btnEaseInSine.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInSine, LBack); btnEaseInExpo.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInExpo, LBack); btnEaseInCirc.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInCirc, LBack); btnEaseInElastic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInElastic, LBack); btnEaseInBack.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInBack, LBack); btnEaseInBounce.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseInBounce, LBack); sleep(10); pnlLeft.Repaint; Application.ProcessMessages; end; tbarWait.Enabled := True; end; procedure TMainForm.btnEaseInOutQuadClick(Sender: TObject); // *** fonctions INOUT *** var Li, LWidth2: Integer; LBack: Boolean; begin tbarWait.Enabled := False; LWidth2 := pnlRight.Width - btnLinear.Width; for LBack := False to True do for Li := 1 to fDuration do begin btnLinear2.Left := ComputeInterpolationInt(0, LWidth2, Li, intLinear, LBack); btnEaseInOutQuad.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutQuad, LBack); btnEaseInOutCubic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutCubic, LBack); btnEaseInOutQuart.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutQuart, LBack); btnEaseInOutQuint.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutQuint, LBack); btnEaseInOutSine.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutSine, LBack); btnEaseInOutExpo.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutExpo, LBack); btnEaseInOutCirc.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutCirc, LBack); btnEaseInOutElastic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutElastic, LBack); btnEaseInOutBack.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutBack, LBack); btnEaseInOutBounce.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseInOutBounce, LBack); sleep(10); pnlRight.Repaint; Application.ProcessMessages; end; tbarWait.Enabled := True; end; procedure TMainForm.btnEaseOutInQuadClick(Sender: TObject); // *** fonctions OUTIN *** var Li, LWidth2: Integer; LBack: Boolean; begin tbarWait.Enabled := False; LWidth2 := pnlRight.Width - btnLinear.Width; for LBack := False to True do for Li := 1 to fDuration do begin btnLinear2.Left := ComputeInterpolationInt(0, LWidth2, Li, intLinear, LBack); btnEaseOutInQuad.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInQuad, LBack); btnEaseOutInCubic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInCubic, LBack); btnEaseOutInQuart.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInQuart, LBack); btnEaseOutInQuint.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInQuint, LBack); btnEaseOutInSine.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInSine, LBack); btnEaseOutInExpo.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInExpo, LBack); btnEaseOutInCirc.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInCirc, LBack); btnEaseOutInElastic.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInElastic, LBack); btnEaseOutInBack.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInBack, LBack); btnEaseOutInBounce.Left := ComputeInterpolationInt(0, LWidth2, Li, intEaseOutInBounce, LBack); sleep(10); pnlRight.Repaint; Application.ProcessMessages; end; tbarWait.Enabled := True; end; procedure TMainForm.btnEaseOutQuadClick(Sender: TObject); // *** fonctions OUT *** var Li, LWidth: Integer; LBack: Boolean; begin tbarWait.Enabled := False; LWidth := pnlLeft.Width - btnLinear2.Width; for LBack := False to True do for Li := 1 to fDuration do begin btnLinear.Left := ComputeInterpolationInt(0, LWidth, Li, intLinear, LBack); btnEaseOutQuad.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutQuad, LBack); btnEaseOutCubic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutCubic, LBack); btnEaseOutQuart.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutQuart, LBack); btnEaseOutQuint.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutQuint, LBack); btnEaseOutSine.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutSine, LBack); btnEaseOutExpo.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutExpo, LBack); btnEaseOutCirc.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutCirc, LBack); btnEaseOutElastic.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutElastic, LBack); btnEaseOutBack.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutBack, LBack); btnEaseOutBounce.Left := ComputeInterpolationInt(0, LWidth, Li, intEaseOutBounce, LBack); sleep(10); pnlLeft.Repaint; Application.ProcessMessages; end; tbarWait.Enabled := True; end; procedure TMainForm.FormCreate(Sender: TObject); // *** création de la fiche *** begin Duration := C_DefaultDuration; tbarWait.Max := C_End; tbarWait.Position := fDuration; end; procedure TMainForm.tbarWaitChange(Sender: TObject); // *** changement de la vitesse *** begin Duration := tbarWait.Position; end; procedure TMainForm.SetDuration(AValue: Cardinal); // *** détermination de la durée d'interpolation *** begin if fDuration =AValue then Exit; fDuration := AValue; end; function TMainForm.InPower(AStart, AChange, AStep: Single; APower: Integer ): Single; // *** calcul d'une interpolation de type IN pour les puissances *** begin Result := AChange * Power(AStep / fDuration, APower) + AStart; end; function TMainForm.OutPower(AStart, AChange, AStep: Single; APower: Integer ): Single; // *** calcul d'une interpolation de type OUT pour les puissances *** var LSign: Integer; begin LSign := ifthen(Odd(APower), 1, -1); Result := LSign * AChange * (Power(AStep / fDuration - 1, APower) + LSign) + AStart; end; function TMainForm.InOutPower(AStart, AChange, AStep: Single; APower: Integer ): Single; // *** calcul d'une interpolation de type INOUT pour les puissances *** var LSign: Integer; begin LSign := ifthen(Odd(APower), 1, -1); AStep := AStep / fDuration * 2; if AStep < 1 then Result := AChange / 2 * Power(AStep, APower) + AStart else Result := LSign * AChange / 2 * (Power(AStep - 2, APower) + LSign * 2) + AStart; end; function TMainForm.EaseNone(AStart, AChange, AStep: Single): Single; // *** pas de fonction ease *** begin Result := AChange * AStep / fDuration + AStart; end; function TMainForm.EaseInQuad(AStart, AChange, AStep: Single): Single; // *** INQUAD *** begin Result := InPower(AStart, AChange, AStep, 2); end; function TMainForm.EaseOutQuad(AStart, AChange, AStep: Single): Single; // *** OUTQUAD *** begin Result := OutPower(AStart, AChange, AStep, 2); end; function TMainForm.EaseInOutQuad(AStart, AChange, AStep: Single): Single; // *** INOUTQUAD *** begin Result := InOutPower(AStart, AChange, AStep, 2); end; function TMainForm.EaseOutInQuad(AStart, AChange, AStep: Single): Single; // *** OUTINQUAD *** begin if AStep < fDuration / 2 then Result := EaseOutQuad(AStart, AChange / 2, AStep * 2) else Result := EaseInQuad(AStart + AChange / 2, AChange / 2, AStep * 2 - fDuration); end; function TMainForm.EaseInCubic(AStart, AChange, AStep: Single): Single; // *** INCUBIC *** begin Result := InPower(AStart, AChange, AStep, 3); end; function TMainForm.EaseOutCubic(AStart, AChange, AStep: Single): Single; // *** OUTCUBIC *** begin Result := OutPower(AStart, AChange, AStep, 3); end; function TMainForm.EaseInOutCubic(AStart, AChange, AStep: Single): Single; // *** INOUTCUBIC *** begin Result := InOutPower(AStart, AChange, AStep, 3); end; function TMainForm.EaseOutInCubic(AStart, AChange, AStep: Single): Single; // *** OUTINCUBIC *** begin if AStep < fDuration / 2 then Result := EaseOutCubic(AStart, AChange / 2, AStep * 2) else Result := EaseInCubic(AStart + AChange / 2, AChange / 2, AStep * 2 - fDuration); end; function TMainForm.EaseInQuart(AStart, AChange, AStep: Single): Single; // *** INQUART *** begin Result := InPower(AStart, AChange, AStep, 4); end; function TMainForm.EaseOutQuart(AStart, AChange, AStep: Single): Single; // *** OUTQUART *** begin Result := OutPower(AStart, AChange, AStep, 4); end; function TMainForm.EaseInOutQuart(AStart, AChange, AStep: Single): Single; // *** INOUTQUART *** begin Result := InOutPower(AStart, AChange, AStep, 4); end; function TMainForm.EaseOutInQuart(AStart, AChange, AStep: Single): Single; // *** OUTINQUART *** begin if AStep < fDuration / 2 then Result := EaseOutQuart(AStart, AChange / 2, AStep * 2) else Result := EaseInQuart(AStart + AChange / 2, AChange / 2, AStep * 2 - fDuration); end; function TMainForm.EaseInQuint(AStart, AChange, AStep: Single): Single; // *** INQUINT *** begin Result := InPower(AStart, AChange, AStep, 5); end; function TMainForm.EaseOutQuint(AStart, AChange, AStep: Single): Single; // *** OUTQUINT *** begin Result := OutPower(AStart, AChange, AStep, 5); end; function TMainForm.EaseInOutQuint(AStart, AChange, AStep: Single): Single; // *** INOUTQUINT *** begin Result := InOutPower(AStart, AChange, AStep, 5); end; function TMainForm.EaseOutInQuint(AStart, AChange, AStep: Single): Single; // *** OUTINQUINT *** begin if AStep < fDuration / 2 then Result := EaseOutQuint(AStart, AChange / 2, AStep * 2) else Result := EaseInQuint(AStart + AChange / 2, AChange / 2, AStep * 2 - fDuration); end; function TMainForm.EaseInSine(AStart, AChange, AStep: Single): Single; // *** INSINE *** begin Result := - AChange * cos(AStep / fDuration * Pi / 2) + AChange + AStart; end; function TMainForm.EaseOutSine(AStart, AChange, AStep: Single): Single; // *** OUTSINE *** begin Result := AChange * sin(AStep / fDuration * Pi / 2) + AStart; end; function TMainForm.EaseInOutSine(AStart, AChange, AStep: Single): Single; // *** INOUTSINE *** begin Result := - AChange / 2 * (cos(AStep / fDuration * Pi) - 1) + AStart; end; function TMainForm.EaseOutInSine(AStart, AChange, AStep: Single): Single; // *** OUTINSINE *** begin if AStep < fDuration / 2 then Result := EaseOutSine(AStart, AChange / 2, AStep * 2) else Result := EaseInSine(AStart + AChange / 2, AChange / 2, AStep * 2 - fDuration); end; function TMainForm.EaseInExpo(AStart, AChange, AStep: Single): Single; // *** INEXPO *** begin Result := ifthen(AStep = 0, AStart, AChange * Power(2, 10 * (AStep / fDuration - 1)) + AStart); end; function TMainForm.EaseOutExpo(AStart, AChange, AStep: Single): Single; // *** OUTEXPO *** begin Result := ifthen(AStep = fDuration, AChange + AStart, AChange * (- Power(2, -10 * AStep / fDuration) + 1) + AStart); end; function TMainForm.EaseInOutExpo(AStart, AChange, AStep: Single): Single; // *** INOUTEXPO *** begin if AStep = 0 then Result := AStart else if AStep = fDuration then Result := AChange + AStart else begin AStep := AStep / fDuration * 2; if AStep < 1 then Result := AChange / 2 * Power(2, 10 * (AStep - 1)) + AStart else Result := AChange / 2 * (- Power(2, - 10 * (AStep - 1)) + 2) + AStart; end; end; function TMainForm.EaseOutInExpo(AStart, AChange, AStep: Single): Single; // *** OUTINEXPO *** begin if AStep < fDuration / 2 then Result := EaseOutExpo(AStart, AChange / 2, AStep * 2) else Result := EaseInExpo(AStart + AChange / 2, AChange / 2, AStep * 2 - fDuration); end; function TMainForm.EaseInCirc(AStart, AChange, AStep: Single): Single; // *** INCIRC *** begin Result := - AChange * (Sqrt(1 - Power(AStep / fDuration, 2)) - 1) + AStart; end; function TMainForm.EaseOutCirc(AStart, AChange, AStep: Single): Single; // *** OUTCIRC *** begin Result := AChange * Sqrt(1 - Power(AStep / fDuration - 1, 2)) + AStart; end; function TMainForm.EaseInOutCirc(AStart, AChange, AStep: Single): Single; // *** INOUTCIRC *** begin AStep := AStep / fDuration * 2; if AStep < 1 then Result := - AChange / 2 * (Sqrt(1 - Power(AStep, 2)) - 1) + AStart else Result := AChange / 2 * (Sqrt(1 - Power(AStep - 2, 2)) + 1) + AStart; end; function TMainForm.EaseOutInCirc(AStart, AChange, AStep: Single): Single; // *** OUTINCIRC *** begin if AStep < fDuration / 2 then Result := EaseOutCirc(AStart, AChange / 2, AStep * 2) else Result := EaseInCirc(AStart + AChange / 2, AChange / 2, AStep * 2 - fDuration); end; function TMainForm.EaseInElastic(AStart, AChange, AStep: Single): Single; // *** INELASTIC *** begin if AStep = 0 then Result := AStart else begin AStep := AStep / fDuration; if AStep = 1 then Result := AChange + AStart else begin AStep := AStep - 1; Result := - (AChange * Power(2, 10 * AStep) * sin((AStep * fDuration - (fDuration * 0.3 / 4)) * 2 * Pi / (fDuration * 0.3))) + AStart; end; end; end; function TMainForm.EaseOutElastic(AStart, AChange, AStep: Single): Single; // *** OUTELASTIC *** begin if AStep = 0 then Result := AStart else begin AStep := AStep / fDuration; if AStep = 1 then Result := AChange + AStart else Result := AChange * Power(2, - 10 * AStep) * sin((AStep * fDuration - (fDuration * 0.3 / 4)) * 2 * Pi / (fDuration * 0.3)) + AChange + AStart; end; end; function TMainForm.EaseInOutElastic(AStart, AChange, AStep: Single): Single; // *** INOUTELASTIC *** begin if AStep = 0 then Result := AStart else begin AStep := AStep / fDuration * 2; if AStep = 2 then Result := AChange + AStart else begin // 0.45 = 0.3*1.5 0.1125 = 0.45 / 4 if AStep < 1 then begin AStep := AStep - 1; Result := - (AChange * Power(2, 10 * AStep) * sin((AStep * fDuration - fDuration * 0.1125) * 2 * Pi / (fDuration * 0.45))) / 2 + AStart; end else begin AStep := AStep - 1; Result := AChange * Power(2, - 10 * AStep) * sin((AStep * fDuration - fDuration * 0.1125) * 2 * Pi / (fDuration * 0.45)) / 2 + AChange + AStart; end; end; end; end; function TMainForm.EaseOutInElastic(AStart, AChange, AStep: Single): Single; // *** OUTINELASTIC *** begin if AStep < fDuration / 2 then Result := EaseOutElastic(AStart, AChange / 2, AStep * 2) else Result := EaseInElastic(AStart + AChange / 2, AChange / 2, AStep * 2 - fDuration); end; function TMainForm.EaseInBack(AStart, AChange, AStep: Single): Single; // *** INBACK *** begin // 1.70158 = 10% 2.592389 = 20% 3.394051 = 30% 4.15574465 = 40% Result := AChange * Power(AStep / fDuration, 2) * (2.70158 * AStep / fDuration - 1.70158) + AStart; end; function TMainForm.EaseOutBack(AStart, AChange, AStep: Single): Single; // *** OUTBACK *** begin Result := AChange * (Power(AStep / fDuration - 1, 2) * (2.70158 * (AStep / fDuration - 1) + 1.70158) + 1) + AStart; end; function TMainForm.EaseInOutBack(AStart, AChange, AStep: Single): Single; // *** INOUTBACK *** begin // 2.5949095 = 1.70158 * 1.525 AStep := AStep / fDuration * 2; if AStep < 1 then Result := AChange / 2 * Power(AStep, 2) * (3.594905 * AStep - 2.594905) + AStart else Result := AChange / 2 * (Power(AStep - 2, 2) * (3.594905 * (AStep - 2) + 2.594905) + 2) + AStart; end; function TMainForm.EaseOutInBack(AStart, AChange, AStep: Single): Single; // *** OUTINBACK *** begin if AStep < fDuration / 2 then Result := EaseOutBack(AStart, AChange / 2, AStep * 2) else Result := EaseInBack(AStart + AChange / 2, AChange / 2, AStep * 2 - fDuration); end; function TMainForm.EaseInOutBounce(AStart, AChange, AStep: Single): Single; // *** INOUTBOUNCE *** begin if AStep < fDuration / 2 then Result := EaseInBounce(0, AChange, AStep * 2) / 2 + AStart else Result := EaseOutBounce(0, AChange, AStep * 2 - fDuration) / 2 + AChange / 2 + AStart; end; function TMainForm.EaseOutInBounce(AStart, AChange, AStep: Single): Single; // *** OUTINBOUNCE *** begin if AStep < fDuration / 2 then Result := EaseOutBounce(AStart, AChange / 2, AStep * 2) else Result := EaseInBounce(AStart + AChange / 2, AChange / 2, AStep * 2 - fDuration); end; function TMainForm.EaseInBounce(AStart, AChange, AStep: Single): Single; // *** INBOUNCE *** begin Result := AChange - EaseOutBounce(0, AChange, fDuration - AStep) + AStart; end; function TMainForm.EaseOutBounce(AStart, AChange, AStep: Single): Single; // *** OUTBOUNCE *** begin AStep := AStep / fDuration; if AStep < 1 / 2.75 then Result := AChange * 7.5625 * Power(AStep, 2) + AStart else if AStep < 2 / 2.75 then begin AStep := AStep - 1.5 / 2.75; Result := AChange * (7.5625 * Power(AStep, 2) + 0.75) + AStart; end else if AStep < 2.5 / 2.75 then begin AStep := AStep - 2.25 / 2.75; Result := AChange * (7.5625 * Power(AStep, 2) + 0.9375) + AStart; end else begin AStep := AStep - 2.625 / 2.75; Result := AChange * (7.5625 * Power(AStep, 2) + 0.984375) + AStart; end; end; function TMainForm.ComputeInterpolation(AStart, AEnd, AStep: Single; AInter: TInterpolation; ABack: Boolean): Single; // *** calcul des interpolations *** begin case AInter of // linéaire intLinear: Result := EaseNone(AStart, AEnd, AStep); // quadratique intEaseInQuad: Result := EaseInQuad(AStart, AEnd, AStep); intEaseOutQuad: Result := EaseOutQuad(AStart, AEnd, AStep); intEaseInOutQuad: Result := EaseInOutQuad(AStart, AEnd, AStep); intEaseOutInQuad: Result := EaseOutInQuad(AStart, AEnd, AStep); // cubique intEaseInCubic: Result := EaseInCubic(AStart, AEnd, AStep); intEaseOutCubic: Result := EaseOutCubic(AStart, AEnd, AStep); intEaseInOutCubic: Result := EaseInOutCubic(AStart, AEnd, AStep); intEaseOutInCubic: Result := EaseOutInCubic(AStart, AEnd, AStep); // quartique intEaseInQuart: Result := EaseInQuart(AStart, AEnd, AStep); intEaseOutQuart: Result := EaseOutQuart(AStart, AEnd, AStep); intEaseInOutQuart: Result := EaseInOutQuart(AStart, AEnd, AStep); intEaseOutInQuart: Result := EaseOutInQuart(AStart, AEnd, AStep); // quintique intEaseInQuint: Result := EaseInQuint(AStart, AEnd, AStep); intEaseOutQuint: Result := EaseOutQuint(AStart, AEnd, AStep); intEaseInOutQuint: Result := EaseInOutQuint(AStart, AEnd, AStep); intEaseOutInQuint: Result := EaseOutInQuint(AStart, AEnd, AStep); // sinus intEaseInSine: Result := EaseInSine(AStart, AEnd, AStep); intEaseOutSine: Result := EaseOutSine(AStart, AEnd, AStep); intEaseInOutSine: Result := EaseInOutSine(AStart, AEnd, AStep); intEaseOutInSine: Result := EaseOutInSine(AStart, AEnd, AStep); // exponentielle intEaseInExpo: Result := EaseInExpo(AStart, AEnd, AStep); intEaseOutExpo: Result := EaseOutExpo(AStart, AEnd, AStep); intEaseInOutExpo: Result := EaseInOutExpo(AStart, AEnd, AStep); intEaseOutInExpo: Result := EaseOutInExpo(AStart, AEnd, AStep); // cercle intEaseInCirc: Result := EaseInCirc(AStart, AEnd, AStep); intEaseOutCirc: Result := EaseOutCirc(AStart, AEnd, AStep); intEaseInOutCirc: Result := EaseInOutCirc(AStart, AEnd, AStep); intEaseOutInCirc: Result := EaseOutInCirc(AStart, AEnd, AStep); // élastique intEaseInElastic: Result := EaseInElastic(AStart, AEnd, AStep); intEaseOutElastic: Result := EaseOutElastic(AStart, AEnd, AStep); intEaseInOutElastic: Result := EaseInOutElastic(AStart, AEnd, AStep); intEaseOutInElastic: Result := EaseOutInElastic(AStart, AEnd, AStep); // retour intEaseInBack: Result := EaseInBack(AStart, AEnd, AStep); intEaseOutBack: Result := EaseOutBack(AStart, AEnd, AStep); intEaseInOutBack: Result := EaseInOutBack(AStart, AEnd, AStep); intEaseOutInBack: Result := EaseOutInBack(AStart, AEnd, AStep); // rebond intEaseInBounce: Result := EaseInBounce(AStart, AEnd, AStep); intEaseOutBounce: Result := EaseOutBounce(AStart, AEnd, AStep); intEaseInOutBounce: Result := EaseInOutBounce(AStart, AEnd, AStep); intEaseOutInBounce: Result := EaseOutInBounce(AStart, AEnd, AStep); end; if ABack then Result := AEnd - Result; end; function TMainForm.ComputeInterpolationInt(AStart, AEnd: Integer; AStep: Integer; AInter: TInterpolation; ABack: Boolean): Integer; // *** interpolation entière *** begin Result := Round(ComputeInterpolation(AStart, AEnd, AStep, AInter, ABack)); end; end. |
Voici une vidéo qui montre l'application en action :
Vous voici parvenus au bout de votre première exploration des interpolations, et plus spécifiquement des courbes d'easing. L'épisode suivant va formaliser ce travail préparatoire en proposant une série de classes à réutiliser dans vos projets à venir.
Le code source de l'application est ici : [ATTACH]447733d1/a/a/a" />.