'
' This example creates two shaders in a simple render tree, and applies
' texture layers to them, illustrating inserting before/after, sharing layers
' between containers, and other fun things.
' In particular, it builds the following stacks of layers (in a slightly
' convoluted way, to show various features of the AddTextureLayer command)...
'
' Phong      Fractal
'   A           A
'   B           D
'   C           E
'   D
'
option explicit
dim oSph, oPhong, oFractal, oLyr(4)
' Build our shaders (a Phong and a Fractal), which will be the "texture
' layer containers" that will each be able to hold a stack of layers.
NewScene , False
set oSph = CreatePrim( "Sphere", "MeshSurface" )
set oPhong = SIApplyShader( "Phong", oSph )
set oFractal = BlendInPresetsInsp( "Fractal", , , True, siReplaceNoBlend, False, False, True )
' Now create and add all the layers, as indicated above.
' Add 'D' to (the end of) the first container.
set oLyr(3) = AddTextureLayer( , oPhong, "D", True )
' Add 'A' to both containers at the start.
set oLyr(0) = AddTextureLayer( , oPhong & "," & oFractal, "A", False )
' Insert 'B' after 'A'.
set oLyr(1) = AddTextureLayer( , oPhong, "B", True, oLyr(0) )
' Insert 'C' before 'D'.
set oLyr(2) = AddTextureLayer( , oPhong, "C", False, oLyr(3) )
' Add 'E' to the end of the second container.
set oLyr(4) = AddTextureLayer( , oFractal, "E", True )
' Add existing layer 'D' to the second container, before 'E'.
AddTextureLayer oLyr(3), oFractal, , False, oLyr(4)
PrintTextureLayersInContainer oPhong
PrintTextureLayersInContainer oFractal
sub PrintTextureLayersInContainer( in_cont )
        dim oStack, oItem, oStr
        oStr = "Texture Layers in Container: " & in_cont & vbCrLf
        set oStack = EnumElements( in_cont & ".TextureLayers" )
        for each oItem in oStack
                oStr = oStr & "    " & oItem.name & vbCrLf
        next
        logmessage oStr
end sub
'
' The output from the example should look something like this:
'
'INFO : "Texture Layers in Container: sphere.Material.Phong
'    A
'    B
'    C
'    D
'
'INFO : "Texture Layers in Container: sphere.Material.Phong.Fractal
'    A
'    D
'    E
'