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Belgian Amiga Club - ADF Collection
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BS1 part 47.7z
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BS1 part 47
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ImageMaster RT v1.50b (1994)(Black Belt Systems)(Disk 4 of 7)[HD].7z
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ImageMaster RT v1.50b (1994)(Black Belt Systems)(Disk 4 of 7)[HD].adf
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apa.lzh.parta
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mcc_hlp
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1994-04-26
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\ApAssist
\: - This is the Quick Help for the compose control panel -
\: ----------------------------------------------------------
\: Written by David E. Patterson
\: ----------------------------------------------------------
\font topaz.font 8
\tc 1
\wr
\lj
\dd "imh_descriptor"
\index "hlp_index/index"
\toc "imh_toc/toc"
\help "aa_help/help
\node "mcc_setblend"
\title "Set Blend"
\next "mcc_transchan"
\prev ""
The blending panel is one of \{ \ts b Imagemaster R/t\} 's most powerful
tools. The blend function gives you control over how certain operations are
mixed into the primary image. In this panel your image will appear as a
square with four graphs and some buttons inside it. There are three ways to
set the graphs; by hand, by preset buttons provided by \{ \ts b Imagemaster
R/t\} , or loading a \{ \tc 15 .ipb \} blend file. Graphs may be copied and
swapped amongst each other by using the provided controls. There is also the
otion of creating a scaled blend graph. As with the rest of \{ \ts b
Imagemaster R/t\} the best way to understand blend controls are to use them.
Remember, the posibilities are limitless.
User Interface: \{ \nw \ts b Compose Panel
Control
Set Blend\}
\endnode
\node "mcc_transchan"
\title "Transparency Channels"
\next "mcc_shadowenable"
\prev "mcc_setblend"
This will allow you to specify whether the blending operations will effect
red, green, or blue transparency channel. Also, any combination of red,
green, or blue is valid. The default is to effect all three at the same
time, thus producing 256 levels of tranparency. By blending each separatly
you have control over 16.8 million levels of transparency.
User Interface: \{ \nw \ts b Compose Panel
Control
Transparency Channels\}
\endnode
\node "mcc_shadowenable"
\title "Shadow Enable"
\next "mcc_shadowcontrol"
\prev "mcc_transchan"
This control, when selected, will generate a shadow.
See Also: \{ \nw \ts b \link "More on Shadows" "mcc_shadow"\}
User Interface: \{ \nw \ts b Compose Panel
Control
Shadow Enable\}
\endnode
\node "mcc_shadowcontrol"
\title "Shadow Control"
\next "mcc_definecolor"
\prev "mcc_shadowenable"
These are the controls for shadow production. You can set the direction of
the shadow to any angle, shadow intensity, and the shadow length.
See Also: \{ \nw \ts b \link "More on Shadows " "mcc_shadow" \link " Shadow Angle " "mccs_hlp/mccs_shadang"
\link "Shadow Intensity" "mccs_hlp/mccs_shadinten" \link " Shadow Length " "mccs_hlp/mccs_len"\}
User Interface: \{ \nw \ts b Compose Panel
Control
Shadow Control\}
\endnode
\node "mcc_definecolor"
\title "Define Color"
\next "mcc_shadow"
\prev "mcc_shadowcontrol"
This tool will allow you to select an area, and \{ \ts b Imagemaster R/t \}
will define the color used in the color keying operations. Also, the average
and variance from the standard deviation, of the selected area, will be
displayed.
User Interface: \{ \nw \ts b Compose Panel
Control
Define Color\}
\endnode
\node "mcc_shadow"
\title "More on Shadows"
\next ""
\prev "mcc_definecolor"
Shadows can be generated as an additional effect during compositing
operations. There are two controls in the Compose panel that facilitate this.
The \{ \ts i switch \} that controls whether a shadow is generated is called
\{ \ts b Shadow Enable\} . When this is selected, a shadow will be generated.
How the shadow appears is controlled by the panel that appears when you
select \{ \ts b Shadow Control \} from the compose panel. In this panel you
will find the means to set the direction of the shadow to any angle, its
intensity (how dark the shadow appears) and the length of the shadow.
The angle should be set to the opposite direction that you want the
illumination to appear to be coming from. '0' degrees is straight up, and as
the angle increases, the shadow proceeds clockwise from that position. 1/4 of
a turn is 90 degrees.
Shadow intensity is least (lightest) when it is set to zero, and most intense
(darkest) when it is set to 255. Note that if you are using any blending
techniques, the shadow will also obey the blend parameters; a partially
transparent object will produce a lighter shadow than a non-transparent
object. The shadow will follow the transparency curve of the object exactly
unless you specifically tell it not to. You can also select for the shadow
to not use the blend curves by selecting the \{ \ts b Ignore Blend \} button.
This will allow for blended images, and non-blended shadows.
The length of the shadow is specified in pixels, and it essentially defines
the distance that the shadow position is offset from the position you placed
the original item being composited.
This capability allows you to create shadows with realistic soft edges
easily. One technique you might like to try is setting a blend with very soft
edges, and with shadow on, compositing the images together. Next, turn the
shadow off, and the blending off; now re-composite the images using "Previous
Region". This will generate a perfect shadow with soft edges, yet the
composed image will be sharp. This effect duplicates what happens when an
object is removed a significant distance from the surface where the shadow is
cast.
\endnode