a simple alpha question 2004-03-04 - By Chris Marshall
Back
Try using an environment for reflections, rather than another sphere, as I
mentioned earlier.
-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)]On Behalf Of
alex dinnin
Sent: Thursday, March 04, 2004 12:00 PM
To: XSI@(protected)
Subject: Re: a simple alpha question
Thats almost it... but why are there no holes in it !!! you can still see
the reflection sphere where there should be nothing ???
Sandy Sutherland <sandy@(protected)> wrote:
Try adding this to your previous posted code and then look at the render
tree for the sphere!
'++++++++++++++++ Code Starts Here
CopyPaste , "Shaders\Texture\Image_Processing\Invert.Preset",
"TransientObjectContainer"
CopyPaste , "Shaders\Texture\Image_Processing\Intensity.Preset",
"TransientObjectContainer"
CopyPaste , "Shaders\Texture\Image_Processing\Intensity.Preset",
"TransientObjectContainer"
SIConnectShaderToCnxPoint "sphere.Material.Phong.Checkerboard",
"TransientObjectContainer.Invert.input"
SIConnectShaderToCnxPoint "TransientObjectContainer.Invert",
"TransientObjectContainer.Intensity1.input"
SIConnectShaderToCnxPoint "TransientObjectContainer.Intensity1.Invert",
"TransientObjectContainer.Intensity.input"
SIConnectShaderToCnxPoint "TransientObjectContainer.Intensity",
"sphere.Material.Phong.reflectivity"
SIConnectShaderToCnxPoint "TransientObjectContainer.Intensity1",
"sphere.Material.Phong.specular"
'+++++++++++++++Code ends here
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----
Sandy Sutherland Digital Doodeller/Technical Director
TThe Refinery (Cape) http://www.refinery.co.za
mailto:sandy@(protected)
(P) (+27 21) 480 3333 (F) (+27 21) 480 3101
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----
-- -- Original Message -- --
From: alex dinnin
To: xsi@(protected)
Sent: Thursday, March 04, 2004 12:40 PM
Subject: a simple alpha question
I'm sorry I am really going back to basics here... but I am pulling my
hair out trying to crack it... and I have failed !!!
Below is a simple script, I have made two spheres a small one and a
big one for reflections
I have plugged a checker texture in to control the transparancy !!!
why can I see reflections and specular where there should be clean
holes ??????
Please HELP
ALEX
SCRIPT STARTS HERE >>>>
NewScene
CreatePrim "Sphere", "NurbsSurface"
Duplicate "sphere", , 2, 1, 1, 0, 0, 1, 0, 1, , , , , , , , , , , 0
SetValue "sphere1.sphere.radius", 50
ApplyTopoOp "Inverse", "sphere1", 3, siPersistentOperation
ApplyShader , , , , siLetLocalMaterialsOverlap
BlendInPresetsInsp , , , True, siReplaceNoBlend
SetValue "sphere1.visibility.primray", False
SetValue "sphere1.visibility.viewvis", False
SetAndToggleSelection "sphere", , True
ApplyShader , , , , siLetLocalMaterialsOverlap
CopyPaste , "Shaders\Texture\Checkerboard.Preset",
"TransientObjectContainer"
SIConnectShaderToCnxPoint "TransientObjectContainer.Checkerboard",
"sphere.Material.Phong.transparency"
SetValue "sphere.Material.Phong.reflectivity.red", 0.483
SetValue "sphere.Material.Phong.reflectivity.green", 0.483
SetValue "sphere.Material.Phong.reflectivity.red", 0.49
SetValue "sphere.Material.Phong.reflectivity.green", 0.49
SetValue "sphere.Material.Phong.reflectivity.red", 0.503
SetValue "sphere.Material.Phong.reflectivity.green", 0.503
SetValue "sphere.Material.Phong.reflectivity.red", 0.538
SetValue "sphere.Material.Phong.reflectivity.green", 0.538
SetValue "sphere.Material.Phong.reflectivity.red", 0.549
SetValue "sphere.Material.Phong.reflectivity.green", 0.549
SetValue "sphere.Material.Phong.reflectivity.red", 0.51
SetValue "sphere.Material.Phong.reflectivity.green", 0.51
SetValue "sphere.Material.Phong.reflectivity.red", 0.497
SetValue "sphere.Material.Phong.reflectivity.green", 0.493
SetValue "sphere.Material.Phong.reflectivity.red", 0.486
SetValue "sphere.Material.Phong.reflectivity.green", 0.486
SetValue "sphere.Material.Phong.reflectivity.red", 0.503
SetValue "sphere.Material.Phong.reflectivity.green", 0.503
SetValue "sphere.Material.Phong.reflectivity.red", 0.507
SetValue "sphere.Material.Phong.reflectivity.green", 0.507
SetValue "sphere.Material.Phong.reflectivity.red", 0.503
SetValue "sphere.Material.Phong.reflectivity.green", 0.503
SetValue "sphere.Material.Phong.reflectivity.red", 0.5
SetValue "sphere.Material.Phong.reflectivity.green", 0.5
SetValue "sphere.Material.Phong.reflectivity.blue", 0.5
CreateProjection "sphere", siTxtUV, siTxtDefaultPlanarXY, ,
"Texture_Projection"
SelectObj "sphere1"
CreateProjection "sphere1", siTxtUV, siTxtDefaultSpherical,
"Texture_Support", "Texture_Projection"
SetInstanceDataValue , "sphere1.Material.Phong.Image.tspace_id",
"Texture_Projection"
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ------
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<DIV><SPAN class=421511312-04032004><FONT face=Arial color=#0000ff size=2>Try
using an environment for reflections, rather than another sphere, as I
mentioned
earlier.</FONT></SPAN></DIV>
<BLOCKQUOTE>
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-- --Original Message-- --<BR><B>From:</B> owner-xsi@(protected)
[mailto:owner-xsi@(protected)]<B>On Behalf Of </B>alex
dinnin<BR><B>Sent:</B> Thursday, March 04, 2004 12:00 PM<BR><B>To:</B>
XSI@(protected)<BR><B>Subject:</B> Re: a simple alpha
question<BR><BR></FONT></DIV>
<DIV>Thats almost it... but why are there no holes in it !!! you can still
see
the reflection sphere where there should be nothing ???<BR><BR><B><I>Sandy
Sutherland <sandy@(protected)></I></B> wrote:
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">
<META content="MSHTML 6.00.2800.1276" name=GENERATOR>
<STYLE></STYLE>
<DIV><FONT face=Arial size=2>Try adding this to your previous posted code
and then look at the render tree for the sphere!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>'++++++++++++++++ Code Starts Here</FONT></DIV>
<DIV><FONT face=Arial size=2><FONT size=2>
<P>CopyPaste , "Shaders\Texture\Image_Processing\Invert.Preset",
"TransientObjectContainer"</P>
<P>CopyPaste , "Shaders\Texture\Image_Processing\Intensity.Preset",
"TransientObjectContainer"</P>
<P>CopyPaste , "Shaders\Texture\Image_Processing\Intensity.Preset",
"TransientObjectContainer"</P>
<P>SIConnectShaderToCnxPoint "sphere.Material.Phong.Checkerboard",
"TransientObjectContainer.Invert.input"</P>
<P>SIConnectShaderToCnxPoint "TransientObjectContainer.Invert",
"TransientObjectContainer.Intensity1.input"</P>
<P>SIConnectShaderToCnxPoint "TransientObjectContainer.Intensity1.Invert",
"TransientObjectContainer.Intensity.input"</P>
<P>SIConnectShaderToCnxPoint "TransientObjectContainer.Intensity",
"sphere.Material.Phong.reflectivity"</P>
<P>SIConnectShaderToCnxPoint "TransientObjectContainer.Intensity1",
"sphere.Material.Phong.specular"</P>
<P>'+++++++++++++++Code ends here</P>
<P> </P></FONT></FONT></DIV>
<DIV>-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----<BR>Sandy
Sutherland Digital Doodeller/Technical Director<BR>TThe Refinery
(Cape) <A
href="http://www.refinery.co.za/">http://www.refinery.co.za</A><BR><A
href="mailto:sandy@(protected)">mailto:sandy@(protected)</A><BR>(P)
(+27 21) 480 3333 (F) (+27 21) 480
3101<BR>-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----</DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT
: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">-- -- Original Message -- -- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:
</B>
<A title=adinnin@(protected) href="mailto:adinnin@(protected)">alex dinnin</A
>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=xsi@(protected)
href="mailto:xsi@(protected)">xsi@(protected)</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, March 04, 2004 12:40
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> a simple alpha
question</DIV>
<DIV><BR></DIV>
<DIV>I'm sorry I am really going back to basics here... but I am pulling
my hair out trying to crack it... and I have failed !!!</DIV>
<DIV> Below is a simple script, I have made two spheres a small one
and a big one for reflections</DIV>
<DIV>I have plugged a checker texture in to control the
transparancy !!! </DIV>
<DIV> </DIV>
<DIV><STRONG>why can I see reflections and specular where there should
be clean holes ??????</STRONG></DIV>
<DIV><STRONG><EM><U></U></EM></STRONG> </DIV>
<DIV><STRONG><EM>Please HELP</EM></STRONG></DIV>
<DIV><STRONG><EM><U></U></EM></STRONG> </DIV>
<DIV><STRONG><EM>ALEX</EM></STRONG></DIV>
<DIV><STRONG><EM><U></U></EM></STRONG> </DIV>
<DIV><STRONG>SCRIPT STARTS HERE >>>></STRONG></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>NewScene</DIV>
<DIV>
<P>CreatePrim "Sphere", "NurbsSurface"</P>
<P>Duplicate "sphere", , 2, 1, 1, 0, 0, 1, 0, 1, , , , , , , , , , , 0</P>
<P>SetValue "sphere1.sphere.radius", 50</P>
<P>ApplyTopoOp "Inverse", "sphere1", 3, siPersistentOperation</P>
<P>ApplyShader , , , , siLetLocalMaterialsOverlap</P>
<P>BlendInPresetsInsp , , , True, siReplaceNoBlend</P>
<P>SetValue "sphere1.visibility.primray", False</P>
<P>SetValue "sphere1.visibility.viewvis", False</P>
<P>SetAndToggleSelection "sphere", , True</P>
<P>ApplyShader , , , , siLetLocalMaterialsOverlap</P>
<P>CopyPaste , "Shaders\Texture\Checkerboard.Preset",
"TransientObjectContainer"</P>
<P>SIConnectShaderToCnxPoint "TransientObjectContainer.Checkerboard",
"sphere.Material.Phong.transparency"</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.483</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.483</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.49</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.49</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.503</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.503</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.538</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.538</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.549</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.549</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.51</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.51</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.497</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.493</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.486</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.486</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.503</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.503</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.507</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.507</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.503</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.503</P>
<P>SetValue "sphere.Material.Phong.reflectivity.red", 0.5</P>
<P>SetValue "sphere.Material.Phong.reflectivity.green", 0.5</P>
<P>SetValue "sphere.Material.Phong.reflectivity.blue", 0.5</P>
<P>CreateProjection "sphere", siTxtUV, siTxtDefaultPlanarXY, ,
"Texture_Projection"</P>
<P>SelectObj "sphere1"</P>
<P>CreateProjection "sphere1", siTxtUV, siTxtDefaultSpherical,
"Texture_Support", "Texture_Projection"</P>
<P>SetInstanceDataValue , "sphere1.Material.Phong.Image.tspace_id",
"Texture_Projection"</P></FONT></DIV>
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