I would like to see information returned in the OIP about whether a door or window inserted in a wall has been flipped (ie mirrored).
The reason for this is that the the appearance of glass differs when rendered in Renderwork depending on whether the symbol has been inserted in normal orientation or mirrored.
Currently there is no way of knowing until after you render the image. You can correct 'the flip' for symetrical doors or windows quite easily but this problem means that left and right hand versions of non symetrical symbols need to be created for a correct rendering rather than just mirroring them.
The problem is not restricted to just surfaces with transparency - I have noticed variations with other surfaces as well.
Julian Carr of OzCAD has advised me that it is to do with the direction of 'surface normal' and that nothing can be done about it. I accept this as being correct. However the issue needs to be explained in the renderWorks manual and in my opinin the orientation (ie. flip or mirror) of the PIO or symbol needs to be returned in the Object info pallette so that the obvious inadvertant mirrors can be picked up easily and corrected.
PS I did try to paste an image showing this problem into here without success. I will email it to the NNA tech people and hopefully they will be kind enough to insert it in for me.
Image added 14 Jan 05 - this quite clearly shows how different the appearance is when the same symbol is mirrored.
[ 01-15-2005, 10:08 AM: Message edited by: mike m oz ]
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mike m oz
I would like to see information returned in the OIP about whether a door or window inserted in a wall has been flipped (ie mirrored).
The reason for this is that the the appearance of glass differs when rendered in Renderwork depending on whether the symbol has been inserted in normal orientation or mirrored.
Currently there is no way of knowing until after you render the image. You can correct 'the flip' for symetrical doors or windows quite easily but this problem means that left and right hand versions of non symetrical symbols need to be created for a correct rendering rather than just mirroring them.
The problem is not restricted to just surfaces with transparency - I have noticed variations with other surfaces as well.
Julian Carr of OzCAD has advised me that it is to do with the direction of 'surface normal' and that nothing can be done about it. I accept this as being correct. However the issue needs to be explained in the renderWorks manual and in my opinin the orientation (ie. flip or mirror) of the PIO or symbol needs to be returned in the Object info pallette so that the obvious inadvertant mirrors can be picked up easily and corrected.
PS I did try to paste an image showing this problem into here without success. I will email it to the NNA tech people and hopefully they will be kind enough to insert it in for me.
Image added 14 Jan 05 - this quite clearly shows how different the appearance is when the same symbol is mirrored.
[ 01-15-2005, 10:08 AM: Message edited by: mike m oz ]
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