fading text

Monkey Forums/Monkey Beginners/fading text

tiresius

(Posted 2014) [#1]

Hello all,
Is there an easy way to create fading text animation with the text commands? I'm using fontmachine at the moment...

Paul - Taiphoz

(Posted 2014) [#2]

Just change the alpha value over time.

Psudo code.

SetAlpha(FadeValue) '0-1
DrawText()
SetAlpha(1)

Paul - Taiphoz

(Posted 2014) [#3]

Strict

Import mojo
Import FontMachine

Const IN:Int =1
Const OUT:Int = 2

Function Main:Int()
	Local ExampleApp:= New ExampleApp
	Return 0
End Function

Class ExampleApp Extends App
	
	Field fadeValue:Float
	Field fadeTimer:Int
	Field fadeDelay:Int
	Field font:BitmapFont
	Field fadeMode:Int
	
	Method New()
		Self.fadeTimer=Millisecs()
		Self.fadeValue=1
		Self.fadeDelay=10
		Self.fadeMode=OUT
		
	End Method
	
	Method OnUpdate:Int()
		If Self.font=Null Then Self.font = New BitmapFont("font/font.txt", True)
		If Millisecs() > Self.fadeTimer+Self.fadeDelay
			Self.fadeTimer=Millisecs()
			Select Self.fadeMode
				Case IN
					Self.fadeValue+=.1
					If Self.fadeValue>1 Then
						Self.fadeMode=OUT
						Self.fadeValue=1
					Endif
				Case OUT
					Self.fadeValue-=.1
					If Self.fadeValue<0 Then
						Self.fadeMode=IN
						Self.fadeValue=0
					Endif						
			End Select
			
		Endif
		
		Return 0
	End Method
	
	Method OnRender:Int()
		Cls	
		
		SetAlpha(Self.fadeValue)
		font.DrawText("This is some Text",100,100,1)
		SetAlpha(1)
		font.DrawText("This is some Outher Text",100,200,1)
		Return 0
	End Method
	
End Class

tiresius

(Posted 2014) [#4]

Goodness I didn't think it was that simple I was looking for arguments in the font stuff.

Thanks !

Paul - Taiphoz

(Posted 2014) [#5]

It's something Ziggy could probably easily add to the FontMachine module you should suggest it to him.

ziggy

(Posted 2014) [#6]

The BlitzMax version of the FontMachine module has sort of per-layer and per-character render actions that can be plugged in into a font to deform the drawing, add fadings, etc. I may add this to FontMachine too, as it is quite easy to do.