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Entity - entity handle
Alpha# - alpha level of entity |
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Sets the entity alpha level of an entity.
The alpha# value should be in a floating point value in the range 0-1. The default entity alpha setting is 1. The alpha level is how transparent an entity is. A value of 1 will mean the entity is opaque. A value of 0 will mean the entity is completely transparent, i.e. invisible. Values between 0 and 1 will cause varying amount of transparency. This is useful for imitating the look of objects such as glass and other translucent materials. An EntityAlpha value of 0 is especially useful as Blitz3D will not render entities with such a value, but will still involve the entities in collision tests. This is unlike HideEntity, which doesn't involve entities in collisions. |
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; EntityAlpha Example
; ------------------- Graphics3D 640,480 SetBuffer BackBuffer() camera=CreateCamera() light=CreateLight() RotateEntity light,90,0,0 cube=CreateCube() Back=CreateCube() PositionEntity cube,0,0,5 PositionEntity back,0,0,15 ScaleEntity Back,10,2,1 EntityColor back,255,0,0 ; Set initial entity color values Alpha#=1 While Not KeyDown( 1 ) ; Change alpha value depending on key pressed If alpha#<0.01 Then alpha# = 0 If alpha#>1 Then alpha# = 1 If KeyDown( 2 )=True And Alpha#>0 Then Alpha#=Alpha#-0.01 If KeyDown( 3 )=True And alpha#<1 Then Alpha#=Alpha#+0.01 ; Set entity alpha value EntityAlpha cube,Alpha# TurnEntity cube,0.1,0.1,0.1 TurnEntity back,1,0,0 RenderWorld Text 0,0,"Press keys 1-2 to change EntityAlpha" Text 0,20,"Entity Alpha: "+Alpha Flip Wend End |