On 1/8/2018 6:22 AM, Jim Holsenback wrote:
> On 1/7/2018 12:38 PM, William F Pokorny wrote:
>> The BITMAP_TYPE nomenclature is used for bump_map, image_map,
>> image_pattern and material_map. HF_TYPE is used for height_fields.
>> Over time I think the documentation has gotten somewhat scrambled with
>> respect to current functionality.
>> Â Â http://wiki.povray.org/content/Reference:Bump_Map
>> Â Â http://wiki.povray.org/content/Reference:Image_Pattern
>> Â Â http://wiki.povray.org/content/Reference:Image_Map
>> We sometimes mark BITMAP_TYPE | HF_TYPE as optional when I believe
>> from 3.7 onward it is everywhere optional.Â When specified, this is
>> the file type POV-Ray will try and read no matter the filename given
>> or the output file type.
>> Our docs often specify the filename as "bitmap.ext" or "bitmap[.ext]"
>> except for height_fields where it is "filename".Â I think "filename"
>> is best because that string needs to be the filename POV-Ray looks to
>> read no matter format.
>> If the user has not specified an explicit BITMAP_TYPE | HF_TYPE,
>> POV-Ray will first look for any known extension in the "filename"
>> string.Â If found, that extension is the image format POV-Ray will try
>> and read.
>> Where the filename has no recognizable extension and BITMAP_TYPE |
>> HF_TYPE has not been specified, POV-Ray will try and read the
>> "filename" as whatever the current output image format is. Only the
>> image_map documentation mentions this latter behavior.
>> There is too in some documentation - material_map for example - this
>> "Note: Earlier versions of POV-Ray allowed some modifiers before the
>> BITMAP_TYPE but that syntax is being phased out in favor of the syntax
>> described here."
>> which probably we can drop. At least for the modifiers I tried before
>> BITMAP_TYPE, I got parser errors in 3.7 and 3.8.
> i'll follow up when i have more than a few moments ... which hasn't been
> very often lately
click in the "diff" link to see what's been changed
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