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Make alpha channel available in direct plotting

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This commit is contained in:
Robin Stuart 2020-08-03 07:53:54 +01:00
parent 382a051cb5
commit 42e866c889
2 changed files with 41 additions and 27 deletions
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6
docs/manual.txt
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@ -846,7 +846,7 @@ output_options | integer | Set various output file | 0 (none)
| | parameters (see section |
| | 5.8). |
fgcolour | character | Foreground (ink) colour as | "000000"
| string | RGB/RGBA hexadecimal |
| string | RGB/RGBA hexadecimal |
| | string. Must be 6 or 8 |
| | characters followed by |
| | terminating \0. |
@ -903,6 +903,10 @@ bitmap_width | integer | Width of stored bitmap | (output only)
| | image (in pixels). |
bitmap_height | integer | Height of stored bitmap | (output only)
| | image (in pixels). |
alphamap | pointer to | Pointer to array | (output only)
| unsigned | representing alpha |
| character | channel (or NULL if no |
| array | alpha channel needed). |
bitmap_byte_length| integer | Size of BMP bitmap data. | (output only)
vector | pointer to | Pointer to vector header | (output only)
| vector | containing pointers to |