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Transparant Figures [message #500748] Sat, 28 November 2009 00:07 Go to next message
Miles Parker is currently offline Miles ParkerFriend
Messages: 1340
Registered: July 2009
Senior Member
Hi guys,

My figures don't appear to be filling -- please see attached screenshot. Is this perhaps something I'm messing up with rendering order? I've verified that fill is true and alpha is 255.

cheers,

Miles
Re: Transparant Figures [message #500753 is a reply to message #500748] Sat, 28 November 2009 06:21 Go to previous messageGo to next message
Kristian Duske is currently offline Kristian DuskeFriend
Messages: 64
Registered: July 2009
Member
Hi Miles,

you seem to have forgotten to actually attach a screenshot!

Best regards
Kristian
Re: Transparant Figures [message #500893 is a reply to message #500748] Mon, 30 November 2009 07:44 Go to previous messageGo to next message
Miles Parker is currently offline Miles ParkerFriend
Messages: 1340
Registered: July 2009
Senior Member
Yeah...hmmm...I can't seem to get image attachment to work in the forum software. Here's a link instead..

http://metascapeabm.com/presentations/ImageIssue.png
http://metascapeabm.com/presentations/ImageIssueSuperimposed .png

This is a simple shot of some cylinders being drawn. the first is for superimposed false -- some seem to be capped and some not. For the second super-imposed is true and none of the appear to be capped.

[Updated on: Mon, 30 November 2009 07:50]

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Re: Transparant Figures [message #500902 is a reply to message #500893] Mon, 30 November 2009 09:11 Go to previous messageGo to next message
Kristian Duske is currently offline Kristian DuskeFriend
Messages: 64
Registered: July 2009
Member
On 2009-11-30 08:44:30 +0100, Miles Parker <milesparker@gmail.com> said:

> You're right, I seem to have.. I'm still figuring out this forum software.
>
> This is a simple shot of some cylinders being drawn. the first is for
> superimposed false -- some seem to be capped and some not. For the
> second super-imposed is true and none of the appear to be capped.

Please submit a bug for this. The cylinders are drawn "inside out",
that is, the inner faces are filled and the outer faces are not.

Regards
Kristian
Re: Transparant Figures [message #501039 is a reply to message #500902] Mon, 30 November 2009 19:02 Go to previous messageGo to next message
Miles Parker is currently offline Miles ParkerFriend
Messages: 1340
Registered: July 2009
Senior Member
OK, will do. One thought I had looking at the superimposed figures. It sort of seems as though the images are being drawn for an observer that was looking from the other direction. I'm wondering if it possible that I've violated some expectation of the rendering engine. I'm not using any of the surface layouts or helpers.
Re: Transparant Figures [message #501126 is a reply to message #501039] Tue, 01 December 2009 08:21 Go to previous message
Kristian Duske is currently offline Kristian DuskeFriend
Messages: 64
Registered: July 2009
Member
On 2009-11-30 20:02:08 +0100, Miles Parker <milesparker@gmail.com> said:

> OK, will do. One thought I had looking at the superimposed figures. It
> sort of seems as though the images are being drawn for an observer that
> was looking from the other direction. I'm wondering if it possible that
> I've violated some expectation of the rendering engine. I'm not using
> any of the surface layouts or helpers.

I messed up the polygon orientation (front vs. back) when filling the
polygons. I'm pretty sure it's a bug, I'll look into it.

Kristian
Re: Transparant Figures [message #563655 is a reply to message #500902] Mon, 30 November 2009 19:02 Go to previous message
Miles Parker is currently offline Miles ParkerFriend
Messages: 1340
Registered: July 2009
Senior Member
OK, will do. One thought I had looking at the superimposed figures. It sort of seems as though the images are being drawn for an observer that was looking from the other direction. I'm wondering if it possible that I've violated some expectation of the rendering engine. I'm not using any of the surface layouts or helpers.
Re: Transparant Figures [message #563679 is a reply to message #563655] Tue, 01 December 2009 08:21 Go to previous message
Kristian Duske is currently offline Kristian DuskeFriend
Messages: 64
Registered: July 2009
Member
On 2009-11-30 20:02:08 +0100, Miles Parker <milesparker@gmail.com> said:

> OK, will do. One thought I had looking at the superimposed figures. It
> sort of seems as though the images are being drawn for an observer that
> was looking from the other direction. I'm wondering if it possible that
> I've violated some expectation of the rendering engine. I'm not using
> any of the surface layouts or helpers.

I messed up the polygon orientation (front vs. back) when filling the
polygons. I'm pretty sure it's a bug, I'll look into it.

Kristian
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