| ImgWriter
Version Differences |
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| Differences
Between V1.1.6 and V1.2 |
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New Features:
- New property: ImageGen.AntiAliasFactor smoothes
the jagged edges of diagonal lines and curves.
- New property: ImageGen.BufferResponse allows
you to turn ASP response buffering on and off.
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| Differences
Between V1.1.5 and V1.1.6 |
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New Features:
- 'AntiAlias' propery
-- support for antialiasing: default is saAntiAlisaNone(0)
type is SAAntiAliasFactor
SAAntiAlisaFactor values: saAntiAliasNone = 0,
saAntiAliasGood = 2, saAntiAliasBest = 4, saAntiAliasHigh
= 6, saAntiAliasHighest = 8
The higher the AntiAliasFactor, the more memory
this funciton requires and the slower it will be.
'saAntiAliasBest' is the recommended value.
- NOTE: When AntiAliasFactor is used, the dimensions
of the text rectangle are determined by the font.
When AntiAliasFactor is not used, the text rectangle
is calculated based on the top, left, height, and
width parameters passed to 'DrawTextOnImage'
- 'BufferResponse' property
- default is 'false'
- turns ASP buffering on and off
- There is an issue with IE where a refresh
of a page will fail if ImgWriter is streaming
an image to the browser. It appears that IE
cannot handle a refresh of a page that is send
to it using 'chunked' transfer encoding. Netscape
handles the refresh without problem. The response
is sent to the browser using 'chunked' transfer
encoding if ASP buffering is turned off. Previously,
ImgWriter turned ASP buffering off automatically.
This property allows a user to turn buffering
on and allow refreshes to succeed as a cost
of higher memory utilization on the server.
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| Differences
Between V1.1.4 and V1.1.5 |
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Issues Addressed:
- When saving an image in GIF format, 'White'(0x00ffffff)
would sometimes be made transparent when the
'TransparentColor' property was not set. This
has been fixed in version 1.1.5.
- Some issues with documentation are corrected.
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| Differences
Between V1.1.3 and V1.1.4 |
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New Features:
- ImageGen.ResizeImage() -- When you wish to
resize an image and maintain proportions, but
at the same time insure that one dimension is
set to an exact value, pass in '0' as the parameter
for the other dimension.
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| Differences
Between V1.1.2 and V1.1.3 |
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New Features:
- New ImageGen properties - DPIx, DPIy, and
DPIunits - allow you to set or return horizontal/vertical
dots per inch, centimeter, or meter.
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| Differences
Between V1.1.1 and V1.1.2 |
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Issues Addressed:
- ImageGen's 'DrawTextOnImage' method would incorrectly
render text containing certain characters, such
as '&'.
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| Differences
Between V1.1.0 and V1.1.1 |
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Issues Addressed:
- ImageGen's 'SaveImage' method would fail under
ASP when saving to a file and a variable was
used for the 'SaveData' parameter.
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| Differences
Between V1.0.9 and V1.1.0 |
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Issues Addressed:
- Loading an image into SoftArtisans.Images from
a variant byte array caused and exception.
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| Differences
Between V1.0.7 and V1.0.9 |
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New Features:
- A new resize algorithm has been added, saiFilterImage,
that greatly increases image quality when reducing
an image. This algorithm should only be used
on continuous-tone images, such as RGBA, grayscale,
RGB, etc. Do not use this algorithm with colormapped
images! The type of filter used is determined
by the 'ResizeFilter' property. The valid values
are:
| 0: |
box |
| 1: |
triangle |
| 2: |
Hamming |
| 3: |
Gaussian |
| 4: |
bell |
| 5: |
B-spline |
| 6: |
cubic 1 |
| 7: |
cubic 2 |
| 8: |
Lanczos3 |
| 9: |
Mitchell |
| 10: |
sinc |
| 11: |
Hermite |
| 12: |
Hanning |
| 13: |
Catrom |
The default value is 4. The result of each filter
type will depend on the image being resized, but
generally type 0 - 3 achieve the best result when
reducing an image.
- ImgWriter can now read individual pages of
a multi-page tiff file. By setting the 'TiffPage'
property to the desired page before calling 'LoadImage()',
ImgWriter will read the specified page.
- Using ImgWriter's new 'TransparentColor' property,
any color in a GIF image can be made transparent.
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| Differences
Between V1.0.5 and V1.0.7 |
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Issues Addressed:
- When ImgWriter sends an image directly to browser,
the size is larger than normal.
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| Differences
Between V1.0.3 and V1.0.5 |
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Issues Addressed:
- Problem in which white was transparent in generated
GIFs.
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| Differences
Between V1.0 and V1.0.3 |
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New Features:
- To align text added to an image with ImageGen.DrawTextOnImage(), the 'Top' parameter might need to be set to a
negative value. This is now a legal parameter.
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