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 :
| Code : | Sélectionner tout |
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Left = 304
Height = 623
Top = 197
Width = 953
Caption = 'Test des interpolations - © G. Vasseur 2018'
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 |
En dehors de gestionnaires d'événements sur lesquels nous reviendrons plus tard, ce fichier reprend les noms des catégories auxquelles seront appliqués les types déjà décrits.
Après ce court billet, nous nous plongerons dans le coeur du sujet avec l'implémentation des fonctions elles-mêmes.
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